/* =====================================================
   MailSure - Premium Theme CSS
   Email Validation & Deliverability Tool
   Supports Dark (default) and Light themes
   ===================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&family=Manrope:wght@400;500;600;700;800&family=Sora:wght@500;600;700;800&display=swap');

/* ── CSS Variables — Dark Theme (default) ── */
:root,
[data-theme='dark'] {
    --font-body: 'Sora', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Sora', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-ui: 'Sora', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --bg-overlay: linear-gradient(135deg, rgba(95, 123, 255, 0.12) 0%, rgba(46, 197, 255, 0.08) 45%, rgba(255, 110, 180, 0.08) 100%);
    --bg-primary: #090d1d;
    --bg-secondary: #101733;
    --bg-card: #141d3f;
    --bg-card-hover: #1a2550;
    --bg-input: #121a39;
    --bg-sidebar: #0c1330;
    --bg-topbar: rgba(9, 13, 29, 0.9);
    --bg-topbar-end: rgba(16, 23, 51, 0.86);
    
    --border-color: rgba(120, 138, 255, 0.2);
    --border-hover: rgba(120, 138, 255, 0.42);
    --border-active: rgba(120, 138, 255, 0.7);
    
    --text-primary: #e9edf8;
    --text-secondary: #98a0c6;
    --text-muted: #68729f;
    --text-heading: #ffffff;
    
    --accent: #5f7bff;
    --accent-light: #97adff;
    --accent-dark: #3b56d9;
    --gradient-accent: linear-gradient(135deg, #5f7bff 0%, #2ec5ff 50%, #ff6eb4 100%);
    
    --success: #2fd3a7;
    --success-bg: rgba(47, 211, 167, 0.14);
    --danger: #ff6b85;
    --danger-bg: rgba(255, 107, 133, 0.14);
    --warning: #ffb648;
    --warning-bg: rgba(255, 182, 72, 0.14);
    --info: #2ec5ff;
    --info-bg: rgba(46, 197, 255, 0.14);
    --risky: #ff9f43;
    --risky-bg: rgba(255, 159, 67, 0.14);
    
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.22);
    --shadow-md: 0 10px 26px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 18px 50px rgba(0, 0, 0, 0.42);
    --shadow-glow: 0 10px 28px rgba(95, 123, 255, 0.2);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    
    --sidebar-width: 260px;
    --sidebar-collapsed: 70px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    --th-bg: rgba(95, 123, 255, 0.09);
    --nav-hover-bg: rgba(95, 123, 255, 0.12);
    --nav-active-bg: rgba(95, 123, 255, 0.2);
    --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238888a8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
}

/* ── CSS Variables — Light Theme ── */
[data-theme='light'] {
    --font-body: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-ui: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

    --bg-overlay: linear-gradient(135deg, rgba(79, 108, 245, 0.08) 0%, rgba(23, 184, 236, 0.05) 55%, rgba(255, 110, 168, 0.05) 100%);
    --bg-primary: #f4f7ff;
    --bg-secondary: #ebeffa;
    --bg-card: #ffffff;
    --bg-card-hover: #f7f9ff;
    --bg-input: #f3f6ff;
    --bg-sidebar: #ffffff;
    --bg-topbar: rgba(255, 255, 255, 0.97);
    --bg-topbar-end: rgba(236, 241, 255, 0.95);
    
    --border-color: rgba(95, 123, 255, 0.16);
    --border-hover: rgba(95, 123, 255, 0.35);
    --border-active: rgba(95, 123, 255, 0.55);
    
    --text-primary: #29314f;
    --text-secondary: #5f6b91;
    --text-muted: #8b95b7;
    --text-heading: #1f2644;
    
    --accent: #4f6cf5;
    --accent-light: #4f6cf5;
    --accent-dark: #3447b8;
    --gradient-accent: linear-gradient(135deg, #4f6cf5 0%, #17b8ec 55%, #ff6ea8 100%);
    
    --success: #149a7a;
    --success-bg: rgba(20, 154, 122, 0.1);
    --danger: #d14563;
    --danger-bg: rgba(209, 69, 99, 0.1);
    --warning: #bd7f08;
    --warning-bg: rgba(189, 127, 8, 0.1);
    --info: #0e98cb;
    --info-bg: rgba(14, 152, 203, 0.1);
    --risky: #d5781a;
    --risky-bg: rgba(213, 120, 26, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(56, 76, 170, 0.08), 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 8px 24px rgba(56, 76, 170, 0.12), 0 2px 4px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 14px 36px rgba(56, 76, 170, 0.16), 0 4px 10px rgba(0, 0, 0, 0.06);
    --shadow-glow: 0 12px 28px rgba(79, 108, 245, 0.14);
    
    --th-bg: rgba(79, 108, 245, 0.06);
    --nav-hover-bg: rgba(79, 108, 245, 0.08);
    --nav-active-bg: rgba(79, 108, 245, 0.14);
    --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%236b6b80' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
}

/* ── Theme Toggle Switch ── */
.theme-toggle {
    position: relative;
    width: 52px;
    height: 28px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    padding: 0 4px;
    flex-shrink: 0;
}

.theme-toggle:hover {
    border-color: var(--accent);
    box-shadow: 0 0 12px rgba(108, 92, 231, 0.15);
}

.theme-toggle-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--gradient-accent);
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    box-shadow: 0 2px 6px rgba(108, 92, 231, 0.3);
    position: relative;
    z-index: 1;
}

[data-theme='light'] .theme-toggle-thumb {
    transform: translateX(23px);
}

.theme-toggle-icons {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 7px;
    pointer-events: none;
    font-size: 12px;
}

.theme-toggle-label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 500;
    margin-right: 6px;
    white-space: nowrap;
}

/* ── Reset & Base ── */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    background: var(--bg-overlay), var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

img,
svg,
canvas,
video {
    max-width: 100%;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--accent-dark);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* ── Layout ── */
.app-wrapper {
    display: block;
    min-height: 100vh;
}

/* ── Sidebar ── */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: var(--sidebar-width);
    height: 100vh;
    background: linear-gradient(180deg, var(--bg-sidebar) 0%, var(--bg-secondary) 100%);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: var(--transition);
    backdrop-filter: blur(20px);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo {
    width: 40px;
    height: 40px;
    background: var(--gradient-accent);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 800;
    color: white;
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.3);
    flex-shrink: 0;
}

.sidebar-logo.has-image {
    padding: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.06);
}

.sidebar-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.sidebar-brand {
    display: flex;
    flex-direction: column;
}

.sidebar-brand h1 {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.3px;
}

.sidebar-brand span {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section {
    margin-bottom: 24px;
}

.nav-section-title {
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1.8px;
    color: var(--text-muted);
    padding: 0 12px;
    margin-bottom: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 2px;
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--nav-hover-bg);
}

.nav-link.active {
    color: var(--accent-light);
    background: var(--nav-active-bg);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--gradient-accent);
    border-radius: 0 3px 3px 0;
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.nav-icon-360 {
    width: 24px;
    height: 24px;
    margin-left: -2px;
    border-radius: 8px;
    color: #fff;
    background: linear-gradient(135deg, #4f7cff 0%, #13c8d8 55%, #e75c9d 100%);
    box-shadow: 0 8px 18px rgba(79, 124, 255, 0.25);
    font-size: 9px;
    font-weight: 900;
    letter-spacing: -0.4px;
    line-height: 1;
}

.nav-link.active .nav-icon-360 {
    box-shadow: 0 0 0 3px rgba(79, 124, 255, 0.16), 0 10px 22px rgba(79, 124, 255, 0.32);
}

.nav-label {
    white-space: nowrap;
}

.nav-badge {
    margin-left: auto;
    background: var(--accent);
    color: white;
    font-size: 10px;
    font-weight: 600;
    padding: 2px 7px;
    border-radius: 10px;
    min-width: 20px;
    text-align: center;
}

/* ── Main Content ── */
.main-content {
    margin-left: var(--sidebar-width);
    width: calc(100% - var(--sidebar-width));
    max-width: calc(100% - var(--sidebar-width));
    padding: 0;
    min-height: 100vh;
    transition: var(--transition);
    min-width: 0;
}

.main-content.auth-content {
    margin-left: 0;
    width: 100%;
    max-width: 100%;
}

/* ── Top Bar ── */
.top-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 32px;
    background: linear-gradient(180deg, var(--bg-topbar) 0%, var(--bg-topbar-end) 100%);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
}

.top-bar-left {
    display: flex;
    align-items: center;
    gap: 16px;
    min-width: 0;
}

.page-title {
    font-family: var(--font-heading);
    font-size: clamp(17px, 2vw, 22px);
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.3px;
    overflow-wrap: anywhere;
}

.page-subtitle {
    font-size: 13px;
    color: var(--text-muted);
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.breadcrumb a {
    color: var(--accent-light);
    text-decoration: none;
}

.top-bar-right {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.top-meta {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}

.top-user {
    font-size: 13px;
    color: var(--text-secondary);
    font-weight: 600;
}

/* ── Page Content ── */
.page-content {
    width: 100%;
    margin: 0;
    padding: clamp(10px, 1vw, 18px) clamp(12px, 1.4vw, 20px);
}

/* ── Cards ── */
.card {
    background: var(--bg-card);
    background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.08));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: var(--transition);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

.card-header {
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.card-title {
    font-family: var(--font-heading);
    font-size: 16px;
    font-weight: 600;
    color: var(--text-heading);
}

.card-body {
    padding: 24px;
    overflow-x: auto;
}

.card-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
}

/* ── Stat Cards ── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.stats-grid.cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stats-grid.cols-4 {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.stats-grid.cols-5 {
    grid-template-columns: repeat(5, minmax(0, 1fr));
}

.compact-stats {
    margin-bottom: 16px;
    gap: 12px;
}

.stat-card {
    background: var(--bg-card);
    background-image: linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(0, 0, 0, 0.08));
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-accent);
    opacity: 0;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    border-color: var(--border-hover);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-card.success::before { background: linear-gradient(90deg, var(--success), #55efc4); opacity: 1; }
.stat-card.danger::before { background: linear-gradient(90deg, var(--danger), #ff8a80); opacity: 1; }
.stat-card.warning::before { background: linear-gradient(90deg, var(--warning), #ffeaa7); opacity: 1; }
.stat-card.info::before { background: linear-gradient(90deg, var(--info), #74b9ff); opacity: 1; }
.stat-card.risky::before { background: linear-gradient(90deg, var(--risky), #ffbe76); opacity: 1; }

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    margin-bottom: 16px;
}

.stat-card.success .stat-icon { background: var(--success-bg); color: var(--success); }
.stat-card.danger .stat-icon { background: var(--danger-bg); color: var(--danger); }
.stat-card.warning .stat-icon { background: var(--warning-bg); color: var(--warning); }
.stat-card.info .stat-icon { background: var(--info-bg); color: var(--info); }
.stat-card.risky .stat-icon { background: var(--risky-bg); color: var(--risky); }

.stat-value {
    font-family: var(--font-heading);
    font-size: 28px;
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1;
    margin-bottom: 6px;
}

.stat-label {
    font-size: 13px;
    color: var(--text-muted);
    font-weight: 500;
}

.delivery-stat-card {
    display: block;
    color: inherit;
    text-decoration: none;
    cursor: pointer;
}

.delivery-stat-card.active {
    border-color: var(--accent);
    box-shadow: var(--shadow-glow);
}

.delivery-detail-panel {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 14px;
    margin: -10px 0 24px;
}

.delivery-detail-panel.compact {
    margin: 0;
}

.delivery-detail-group {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
}

.delivery-detail-group.is-hidden {
    display: none;
}

.delivery-detail-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 10px;
    color: var(--text-heading);
    font-size: 13px;
    font-weight: 800;
}

.delivery-detail-heading strong {
    font-size: 16px;
}

.delivery-detail-list {
    display: grid;
    gap: 7px;
}

.delivery-detail-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: 30px;
    padding: 7px 9px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    color: var(--text-secondary);
    font-size: 12px;
}

.delivery-detail-item strong {
    color: var(--text-heading);
    font-size: 13px;
}

@media (max-width: 860px) {
    .delivery-detail-panel {
        grid-template-columns: 1fr;
    }
}

/* ── Buttons ── */
.btn {
    font-family: var(--font-ui);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(255,255,255,0.1);
    opacity: 0;
    transition: var(--transition);
}

.btn:hover::after {
    opacity: 1;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--gradient-accent);
    color: white;
    box-shadow: 0 8px 22px rgba(95, 123, 255, 0.36);
}

.btn-primary:hover {
    box-shadow: 0 12px 28px rgba(95, 123, 255, 0.42);
    transform: translateY(-1px);
}

.btn-success {
    background: linear-gradient(135deg, #00cec9, #55efc4);
    color: #0a0a14;
    box-shadow: 0 4px 15px rgba(0, 206, 201, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #ff6b6b, #ff8a80);
    color: white;
    box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
}

.btn-warning {
    background: linear-gradient(135deg, #feca57, #ffeaa7);
    color: #0a0a14;
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-ghost:hover {
    border-color: var(--accent);
    color: var(--accent-light);
    background: rgba(95, 123, 255, 0.12);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 12px;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 16px;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: var(--radius-sm);
}

/* ── Forms ── */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-ui);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
    min-width: 0;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(95, 123, 255, 0.2);
}

.form-input::placeholder {
    color: var(--text-muted);
}

.form-textarea {
    resize: vertical;
    min-height: 100px;
}

.form-select {
    appearance: none;
    background-image: var(--select-arrow);
    background-repeat: no-repeat;
    background-position: right 14px center;
    padding-right: 40px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
}

.form-hint {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ── Email Input (Hero) ── */
.email-input-hero {
    position: relative;
    margin-bottom: 24px;
    min-width: 0;
}

.email-input-hero input {
    width: 100%;
    padding: 20px 170px 20px 56px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--radius-xl);
    color: var(--text-heading);
    font-size: 18px;
    font-weight: 500;
    transition: var(--transition);
    outline: none;
    min-width: 0;
}

.email-input-hero input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(108, 92, 231, 0.15), var(--shadow-glow);
}

.email-input-hero .input-icon {
    position: absolute;
    left: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 20px;
    color: var(--text-muted);
}

.email-input-hero .btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    padding: 12px 24px;
}

/* ── Validation Steps ── */
.validation-steps {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.validation-step {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 18px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.validation-step.show {
    opacity: 1;
    transform: translateX(0);
}

.validation-step.passed {
    border-color: rgba(0, 206, 201, 0.3);
    background: rgba(0, 206, 201, 0.05);
}

.validation-step.failed {
    border-color: rgba(255, 107, 107, 0.3);
    background: rgba(255, 107, 107, 0.05);
}

.step-icon {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.validation-step.passed .step-icon {
    background: var(--success-bg);
    color: var(--success);
}

.validation-step.failed .step-icon {
    background: var(--danger-bg);
    color: var(--danger);
}

.validation-step.pending .step-icon {
    background: rgba(136, 136, 168, 0.1);
    color: var(--text-muted);
}

.step-info {
    flex: 1;
}

.step-name {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-heading);
}

.step-detail {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ── Status Badges ── */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-deliverable {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(0, 206, 201, 0.2);
}

.badge-undeliverable {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(255, 107, 107, 0.2);
}

.badge-risky {
    background: var(--risky-bg);
    color: var(--risky);
    border: 1px solid rgba(255, 159, 67, 0.2);
}

.badge-unknown {
    background: rgba(136, 136, 168, 0.1);
    color: var(--text-muted);
    border: 1px solid rgba(136, 136, 168, 0.2);
}

.badge-active {
    background: var(--success-bg);
    color: var(--success);
}

.badge-paused {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-blocked {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-pending {
    background: var(--info-bg);
    color: var(--info);
}

.badge-processing {
    background: rgba(108, 92, 231, 0.1);
    color: var(--accent-light);
    animation: pulse-badge 2s infinite;
}

.badge-completed {
    background: var(--success-bg);
    color: var(--success);
}

@keyframes pulse-badge {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* ── Tables ── */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
}

.data-table {
    width: 100%;
    min-width: 760px;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table th {
    padding: 12px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    background: var(--th-bg);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.data-table td {
    padding: 12px 16px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    vertical-align: top;
}

.data-table td,
.data-table th {
    overflow-wrap: anywhere;
}

.data-table tr:hover td {
    background: rgba(95, 123, 255, 0.08);
    color: var(--text-primary);
}

.data-table .email-cell {
    font-family: var(--font-mono);
    font-weight: 500;
    color: var(--text-primary);
}

/* ── Progress Bar ── */
.campaign-table-wrapper {
    width: 100%;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.campaign-list-table {
    table-layout: fixed;
    min-width: 900px;
}

.campaign-list-table th,
.campaign-list-table td {
    padding: 14px 14px;
    overflow-wrap: normal;
    word-break: normal;
}

.campaign-list-table th {
    font-size: 10px;
    letter-spacing: 0.08em;
}

.campaign-name-cell,
.campaign-segment-cell,
.campaign-created-cell {
    white-space: normal;
}

.campaign-title {
    font-weight: 700;
    color: var(--text-heading);
    line-height: 1.35;
    overflow-wrap: anywhere;
}

.campaign-code {
    margin-top: 4px;
    font-size: 11px;
    color: var(--text-muted);
    overflow-wrap: anywhere;
}

.campaign-segment-cell {
    min-width: 180px;
}

.segment-line {
    color: var(--text-muted);
    font-size: 12px;
    line-height: 1.45;
}

.segment-primary {
    color: var(--text-heading);
    font-weight: 700;
}

.segment-empty {
    display: inline-flex;
    align-items: center;
    padding: 4px 8px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.12);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 700;
    white-space: nowrap;
}

.campaign-progress-mini {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-width: 92px;
}

.campaign-progress-track {
    width: 54px;
    height: 4px;
    background: var(--bg-input);
    border-radius: 999px;
    overflow: hidden;
}

.campaign-progress-fill {
    height: 100%;
    background: var(--accent);
    border-radius: 999px;
}

.campaign-progress-mini span {
    font-size: 11px;
    color: var(--text-muted);
    white-space: nowrap;
}

.campaign-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: flex-start;
    min-width: 138px;
}

.campaign-actions .btn {
    min-height: 34px;
    white-space: nowrap;
}

.campaign-status-cell .badge {
    max-width: 100%;
    justify-content: center;
    white-space: nowrap;
}

.campaign-results-cell {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}

.result-chip {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 4px 7px;
    font-size: 11px;
    font-weight: 800;
    line-height: 1;
    white-space: nowrap;
}

.result-ok {
    color: var(--success);
    background: rgba(16, 185, 129, 0.10);
}

.result-bad {
    color: var(--danger);
    background: rgba(244, 63, 94, 0.10);
}

.result-risky {
    color: var(--risky);
    background: rgba(245, 158, 11, 0.12);
}

.campaign-created-cell {
    color: var(--text-muted);
    font-size: 12px;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-input);
    border-radius: 4px;
    overflow: hidden;
    position: relative;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    background: var(--gradient-accent);
    transition: width 0.5s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-top: 6px;
}

/* ── SMTP Account Cards ── */
.smtp-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.smtp-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    transition: var(--transition);
}

.smtp-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-glow);
}

.smtp-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.smtp-card-name {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-heading);
}

.smtp-card-info {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.smtp-info-row {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
}

.smtp-info-label {
    color: var(--text-muted);
}

.smtp-info-value {
    color: var(--text-secondary);
    font-weight: 500;
}

.health-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-input);
    border-radius: 2px;
    overflow: hidden;
    margin-top: 12px;
}

.health-fill {
    height: 100%;
    border-radius: 2px;
    transition: width 0.5s ease;
}

.health-fill.good { background: var(--success); }
.health-fill.medium { background: var(--warning); }
.health-fill.bad { background: var(--danger); }

.smtp-usage-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
    margin-top: 16px;
}

.smtp-usage-box {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-input);
    padding: 10px 12px;
    min-width: 0;
}

.smtp-usage-box span {
    display: block;
    font-size: 10px;
    font-weight: 800;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--text-muted);
    white-space: nowrap;
}

.smtp-usage-box strong {
    display: block;
    margin-top: 5px;
    font-size: 18px;
    line-height: 1;
    color: var(--text-heading);
}

.smtp-health-box.good strong { color: var(--success); }
.smtp-health-box.medium strong { color: var(--warning); }
.smtp-health-box.bad strong { color: var(--danger); }

.smtp-card-actions {
    display: flex;
    gap: 8px;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
}

/* ── Modal ── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.modal-overlay.show {
    display: flex;
    opacity: 1;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: var(--shadow-lg);
}

.modal-overlay.show .modal {
    transform: scale(1);
}

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-heading);
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(255, 107, 107, 0.1);
    color: var(--danger);
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    transition: var(--transition);
}

.modal-close:hover {
    background: rgba(255, 107, 107, 0.2);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* ── File Upload Zone ── */
.upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 48px;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(108, 92, 231, 0.05);
}

.upload-zone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-icon {
    font-size: 48px;
    color: var(--accent);
    margin-bottom: 16px;
}

.upload-text {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-heading);
    margin-bottom: 8px;
}

.upload-hint {
    font-size: 13px;
    color: var(--text-muted);
}

/* ── Result Badge (Large) ── */
.result-badge-lg {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 28px;
    border-radius: var(--radius-lg);
    margin-top: 24px;
}

.result-badge-lg.deliverable {
    background: var(--success-bg);
    border: 1px solid rgba(0, 206, 201, 0.2);
}

.result-badge-lg.undeliverable {
    background: var(--danger-bg);
    border: 1px solid rgba(255, 107, 107, 0.2);
}

.result-badge-lg.risky {
    background: var(--risky-bg);
    border: 1px solid rgba(255, 159, 67, 0.2);
}

.result-badge-lg.unknown {
    background: rgba(136, 136, 168, 0.05);
    border: 1px solid rgba(136, 136, 168, 0.2);
}

.result-icon-lg {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.result-badge-lg.deliverable .result-icon-lg { background: rgba(0, 206, 201, 0.15); color: var(--success); }
.result-badge-lg.undeliverable .result-icon-lg { background: rgba(255, 107, 107, 0.15); color: var(--danger); }
.result-badge-lg.risky .result-icon-lg { background: rgba(255, 159, 67, 0.15); color: var(--risky); }
.result-badge-lg.unknown .result-icon-lg { background: rgba(136, 136, 168, 0.15); color: var(--text-muted); }

.result-text-lg {
    flex: 1;
}

.result-status-lg {
    font-size: 20px;
    font-weight: 700;
    text-transform: capitalize;
}

.result-badge-lg.deliverable .result-status-lg { color: var(--success); }
.result-badge-lg.undeliverable .result-status-lg { color: var(--danger); }
.result-badge-lg.risky .result-status-lg { color: var(--risky); }
.result-badge-lg.unknown .result-status-lg { color: var(--text-muted); }

.result-sub-lg {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* ── Loading Spinner ── */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-overlay {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 40px;
    color: var(--text-muted);
    font-size: 14px;
}

/* ── Toast Notifications ── */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.toast {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    width: min(420px, calc(100vw - 32px));
    min-width: min(300px, calc(100vw - 32px));
    animation: slideInRight 0.3s ease;
    font-size: 14px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.info { border-left: 3px solid var(--info); }

@keyframes slideInRight {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* ── Grid Layouts ── */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* ── Chart Container ── */
.chart-container {
    position: relative;
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

/* ── Dashboard line charts: fixed uniform height so full-width and
   half-width cards (e.g. Sub Sector Performance) stay the same size ── */
.dash-chart {
    position: relative;
    width: 100%;
    height: 300px;
}

.dash-chart > canvas {
    width: 100% !important;
    height: 100% !important;
}

@media (max-width: 760px) {
    .dash-chart {
        height: 260px;
    }
}

/* ── Donut Stats ── */
.donut-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.donut-center-value {
    font-size: 32px;
    font-weight: 800;
    color: var(--text-heading);
}

.donut-center-label {
    font-size: 12px;
    color: var(--text-muted);
}

/* ── Legend ── */
.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 20px;
    justify-content: center;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

/* ── Empty State ── */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-muted);
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.empty-text {
    font-size: 14px;
    max-width: 400px;
    margin: 0 auto 20px;
}

/* ── Filter Bar ── */
.filter-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.filter-btn {
    font-family: var(--font-ui);
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    background: transparent;
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    border-color: var(--accent);
    color: var(--accent-light);
    background: rgba(95, 123, 255, 0.14);
}

.btn:focus-visible,
.nav-link:focus-visible,
.filter-btn:focus-visible,
.form-input:focus-visible,
.form-select:focus-visible,
.form-textarea:focus-visible,
.theme-toggle:focus-visible {
    outline: 2px solid var(--accent-light);
    outline-offset: 2px;
}

/* ── Settings Form ── */
.settings-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.settings-section {
    margin-bottom: 32px;
}

.settings-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

/* ── Responsive ── */
@media (max-width: 1024px) {
    .sidebar {
        width: var(--sidebar-collapsed);
    }
    .sidebar-brand,
    .nav-section-title,
    .nav-label,
    .nav-badge {
        display: none;
    }
    .nav-link {
        justify-content: center;
        padding: 12px;
    }
    .main-content {
        margin-left: var(--sidebar-collapsed);
        width: calc(100% - var(--sidebar-collapsed));
        max-width: calc(100% - var(--sidebar-collapsed));
    }
    .grid-2, .grid-3, .form-row, .settings-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100%;
    }
    .page-content {
        padding: 20px 16px;
    }
    .top-bar {
        padding: 12px 16px;
    }
    .top-bar-right {
        gap: 8px;
    }
    .theme-toggle-label {
        display: none;
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid.cols-3,
    .stats-grid.cols-4,
    .stats-grid.cols-5 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .smtp-grid {
        grid-template-columns: 1fr;
    }
    .email-input-hero input {
        padding: 16px 16px 16px 48px;
        font-size: 15px;
    }
    .email-input-hero .btn {
        position: static;
        transform: none;
        width: 100%;
        margin-top: 12px;
    }

    .main-content.auth-content .page-content {
        min-height: 100vh;
        padding: 18px;
    }

    .auth-layout {
        grid-template-columns: 1fr;
    }

    .auth-brand {
        padding: 28px 24px;
        border-bottom: 1px solid var(--border-color);
    }

    .auth-title {
        font-size: 26px;
    }

    .auth-panel {
        padding: 28px 24px;
    }

    .auth-panel-header h2 {
        font-size: 24px;
    }
}

@media (max-width: 520px) {
    .stats-grid.cols-3,
    .stats-grid.cols-4,
    .stats-grid.cols-5 {
        grid-template-columns: 1fr;
    }
}

/* ── Activity Log ── */
.activity-list {
    display: flex;
    flex-direction: column;
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 6px;
    flex-shrink: 0;
}

.activity-text {
    font-size: 13px;
    color: var(--text-secondary);
    flex: 1;
}

.activity-time {
    font-size: 11px;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ── Pagination ── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    margin-top: 24px;
}

.pagination a {
    text-decoration: none;
}

.pagination button {
    font-family: var(--font-ui);
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
}

.pagination button:hover,
.pagination button.active {
    border-color: var(--accent);
    color: var(--accent-light);
    background: var(--nav-hover-bg);
}

.pagination .dots {
    color: var(--text-muted);
    font-size: 12px;
    padding: 0 6px;
}

/* Auth / Login */
.main-content.auth-content .page-content {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 28px;
}

.auth-layout {
    width: min(980px, 100%);
    display: grid;
    grid-template-columns: minmax(280px, 0.95fr) minmax(340px, 1.05fr);
    border: 1px solid var(--border-color);
    border-radius: 18px;
    overflow: hidden;
    background: var(--bg-card);
    box-shadow: var(--shadow-lg);
}

.auth-brand {
    padding: 42px 34px;
    background: linear-gradient(150deg, rgba(95, 123, 255, 0.35), rgba(46, 197, 255, 0.2) 55%, rgba(255, 110, 180, 0.22));
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-badge {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 22px;
    color: #fff;
    background: var(--gradient-accent);
    box-shadow: 0 10px 26px rgba(95, 123, 255, 0.3);
    margin-bottom: 18px;
}

.auth-badge.has-image {
    padding: 0;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.08);
}

.auth-badge img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.auth-title {
    font-family: var(--font-heading);
    font-size: 32px;
    line-height: 1.1;
    color: var(--text-heading);
    margin: 0;
}

.auth-subtitle {
    margin-top: 8px;
    margin-bottom: 0;
    font-size: 13px;
    letter-spacing: 1.6px;
    text-transform: uppercase;
    color: var(--text-secondary);
    font-weight: 700;
}

.auth-divider {
    margin: 24px 0 16px;
    width: 64px;
    height: 2px;
    border-radius: 2px;
    background: rgba(255, 255, 255, 0.55);
}

.auth-caption {
    margin: 0;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 600;
}

.auth-panel {
    padding: 38px 34px;
    background: var(--bg-card);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.auth-panel-header h2 {
    margin: 0;
    font-family: var(--font-heading);
    font-size: 28px;
    color: var(--text-heading);
}

.auth-panel-header p {
    margin: 8px 0 0;
    color: var(--text-muted);
    font-size: 13px;
    font-weight: 600;
}

.auth-form {
    margin-top: 22px;
}

.auth-field {
    margin-bottom: 18px;
}

.auth-input {
    height: 46px;
    font-size: 15px;
}

.auth-submit {
    width: 100%;
    justify-content: center;
    margin-top: 6px;
}

.auth-divider-text {
    margin: 18px 0 14px;
    text-align: center;
    position: relative;
}

.auth-divider-text::before {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    top: 50%;
    border-top: 1px solid var(--border-color);
}

.auth-divider-text span {
    position: relative;
    z-index: 1;
    display: inline-block;
    padding: 0 10px;
    background: var(--bg-card);
    color: var(--text-muted);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.7px;
}

.auth-oauth-buttons {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.auth-oauth-btn {
    width: 100%;
    justify-content: center;
    height: 44px;
    font-size: 13px;
}

.login-alert {
    margin-top: 16px;
    border: 1px solid rgba(255, 107, 133, 0.32);
    background: rgba(255, 107, 133, 0.12);
    color: var(--danger);
    border-radius: var(--radius-sm);
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 600;
}

/* ── Light Theme Overrides ── */
[data-theme='light'] .sidebar {
    box-shadow: 2px 0 12px rgba(0,0,0,0.04);
}

[data-theme='light'] .card {
    box-shadow: var(--shadow-sm);
    background-image: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(79, 108, 245, 0.04));
}

[data-theme='light'] .card:hover {
    box-shadow: var(--shadow-md);
}

[data-theme='light'] .stat-card:hover {
    box-shadow: var(--shadow-md);
}

[data-theme='light'] .stat-card {
    background-image: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(79, 108, 245, 0.04));
}

[data-theme='light'] .smtp-card {
    box-shadow: var(--shadow-sm);
}

[data-theme='light'] .smtp-card:hover {
    box-shadow: var(--shadow-md);
}

[data-theme='light'] .modal {
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

[data-theme='light'] .toast {
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

[data-theme='light'] .top-bar {
    box-shadow: 0 6px 18px rgba(41, 49, 79, 0.08);
}

[data-theme='light'] .auth-layout {
    background: #ffffff;
}

[data-theme='light'] .auth-panel {
    background: linear-gradient(180deg, #ffffff, rgba(79, 108, 245, 0.04));
}

[data-theme='light'] .auth-brand {
    background: linear-gradient(155deg, rgba(79, 108, 245, 0.22), rgba(23, 184, 236, 0.14) 55%, rgba(255, 110, 168, 0.12));
}

[data-theme='light'] .auth-divider {
    background: rgba(79, 108, 245, 0.45);
}

[data-theme='light'] .nav-link.active {
    color: var(--accent);
}

[data-theme='light'] .btn-success {
    color: #ffffff;
}

[data-theme='light'] .btn-warning {
    color: #1a1a2e;
}

[data-theme='light'] .sidebar-logo {
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.2);
}

[data-theme='light'] ::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

[data-theme='light'] ::-webkit-scrollbar-thumb {
    background: rgba(108, 92, 231, 0.25);
}

[data-theme='light'] ::-webkit-scrollbar-thumb:hover {
    background: var(--accent);
}

/* ── Utilities ── */
.text-success { color: var(--success) !important; }
.text-danger { color: var(--danger) !important; }
.text-warning { color: var(--warning) !important; }
.text-info { color: var(--info) !important; }
.text-muted { color: var(--text-muted) !important; }
.text-accent { color: var(--accent-light) !important; }

.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-4 { margin-bottom: 16px; }
.mb-6 { margin-bottom: 24px; }

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }
.gap-4 { gap: 16px; }

.hidden { display: none !important; }

.truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 200px;
}

/* --- Responsive hardening across all screens --- */
@media (max-width: 1180px) {
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    }

    .stat-card {
        padding: 20px;
    }

    .grid-2,
    .grid-3 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .sidebar {
        width: min(86vw, 320px);
        transform: translateX(-105%);
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-brand,
    .nav-section-title,
    .nav-label,
    .nav-badge {
        display: flex;
    }

    .nav-section-title {
        display: block;
    }

    .nav-link {
        justify-content: flex-start;
        padding: 11px 14px;
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100%;
    }

    body.sidebar-open {
        overflow: hidden;
    }

    body.sidebar-open .main-content::before {
        content: '';
        position: fixed;
        inset: 0;
        z-index: 80;
        background: rgba(5, 9, 24, 0.58);
        backdrop-filter: blur(3px);
    }

    .top-bar {
        padding: 12px 16px;
        gap: 10px;
        align-items: flex-start;
    }

    .top-bar-left {
        flex: 1 1 auto;
    }

    .top-bar-right {
        flex: 0 1 auto;
        gap: 8px;
    }

    .top-meta {
        display: none;
    }

    .theme-toggle-label {
        display: none;
    }

    #sidebarToggle {
        display: inline-flex !important;
        flex-shrink: 0;
    }
}

@media (max-width: 760px) {
    .page-content {
        padding: 14px;
    }

    .card {
        border-radius: var(--radius-md);
    }

    .card-header,
    .card-body,
    .card-footer {
        padding: 16px;
    }

    .card-footer {
        align-items: stretch;
        flex-direction: column;
    }

    .btn {
        min-height: 42px;
    }

    .btn:not(.btn-icon) {
        width: 100%;
    }

    .form-row,
    .settings-grid,
    [style*="grid-template-columns:1fr 1fr"],
    [style*="grid-template-columns: 1fr 1fr"],
    [style*="grid-template-columns:repeat(2"],
    [style*="grid-template-columns: repeat(2"],
    [style*="grid-template-columns:repeat(3"],
    [style*="grid-template-columns: repeat(3"],
    [style*="grid-template-columns:minmax"] {
        grid-template-columns: 1fr !important;
    }

    [style*="display:flex"] {
        max-width: 100%;
    }

    .stats-grid,
    .stats-grid.cols-3,
    .stats-grid.cols-4,
    .stats-grid.cols-5 {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 12px;
    }

    .stat-card {
        padding: 16px;
    }

    .stat-icon {
        width: 38px;
        height: 38px;
        margin-bottom: 12px;
    }

    .stat-value {
        font-size: clamp(21px, 7vw, 28px);
    }

    .upload-zone {
        padding: 28px 16px;
    }

    .smtp-card {
        padding: 16px;
    }

    .smtp-card-header,
    .smtp-card-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .result-badge-lg,
    .validation-step,
    .activity-item {
        align-items: flex-start;
    }

    .result-badge-lg {
        padding: 16px;
        gap: 12px;
    }

    .result-icon-lg {
        width: 40px;
        height: 40px;
        font-size: 20px;
    }

    .modal {
        width: calc(100vw - 24px);
        max-height: calc(100vh - 24px);
    }

    .responsive-card-table {
        min-width: 0;
        border-spacing: 0 12px;
    }

    .responsive-card-table thead {
        display: none;
    }

    .responsive-card-table,
    .responsive-card-table tbody,
    .responsive-card-table tr,
    .responsive-card-table td {
        display: block;
        width: 100%;
    }

    .responsive-card-table tr {
        border: 1px solid var(--border-color);
        border-radius: var(--radius-md);
        background: var(--bg-card);
        overflow: hidden;
        box-shadow: var(--shadow-sm);
    }

    .responsive-card-table td {
        display: grid;
        grid-template-columns: minmax(105px, 38%) minmax(0, 1fr);
        gap: 10px;
        align-items: start;
        padding: 10px 12px;
        border-bottom: 1px solid var(--border-color);
    }

    .responsive-card-table td:last-child {
        border-bottom: 0;
    }

    .responsive-card-table td::before {
        content: attr(data-label);
        font-size: 10px;
        font-weight: 800;
        text-transform: uppercase;
        letter-spacing: 0.7px;
        color: var(--text-muted);
    }

    .responsive-card-table td .flex,
    .responsive-card-table td [style*="display:flex"] {
        flex-wrap: wrap;
    }
}

@media (max-width: 560px) {
    .top-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .top-bar-right {
        justify-content: space-between;
        width: 100%;
    }

    .top-user {
        max-width: 42vw;
        overflow: hidden;
        text-overflow: ellipsis;
        white-space: nowrap;
    }

    .stats-grid,
    .stats-grid.cols-3,
    .stats-grid.cols-4,
    .stats-grid.cols-5 {
        grid-template-columns: 1fr;
    }

    .email-input-hero {
        display: grid;
        gap: 10px;
    }

    .email-input-hero input {
        padding: 15px 14px 15px 46px;
        font-size: 15px;
        border-radius: var(--radius-md);
    }

    .email-input-hero .input-icon {
        top: 23px;
        transform: none;
    }

    .email-input-hero .btn {
        position: static;
        transform: none;
        width: 100%;
        margin-top: 0;
    }

    .data-table {
        min-width: 0;
    }

    .toast-container {
        left: 12px;
        right: 12px;
        bottom: 12px;
    }

    .toast {
        width: 100%;
        min-width: 0;
    }

    .auth-layout {
        border-radius: var(--radius-md);
    }

    .auth-brand,
    .auth-panel {
        padding: 22px 18px;
    }
}

@media (max-width: 380px) {
    .page-content {
        padding: 10px;
    }

    .card-header,
    .card-body,
    .card-footer {
        padding: 12px;
    }

    .page-title {
        font-size: 16px;
    }

    .btn {
        padding-left: 12px;
        padding-right: 12px;
    }
}

/* Scoped campaign table fixes only */
.mass-campaign-table,
.results-campaign-table {
    table-layout: fixed;
    width: 100%;
}

.mass-campaign-table {
    min-width: 1130px;
}

.results-campaign-table {
    min-width: 1180px;
}

.mass-campaign-table th,
.mass-campaign-table td,
.results-campaign-table th,
.results-campaign-table td {
    vertical-align: middle;
}

.mass-campaign-table .campaign-mode-cell,
.mass-campaign-table .campaign-status-cell,
.mass-campaign-table .campaign-progress-cell {
    white-space: nowrap;
}

.mass-campaign-table .campaign-mode-cell span {
    white-space: nowrap;
}

.mass-campaign-table .campaign-status-cell .badge {
    min-width: 88px;
    justify-content: center;
    white-space: nowrap;
}

.mass-campaign-table .campaign-progress-cell .progress-bar {
    width: 110px !important;
}

.mass-campaign-table .campaign-results-cell,
.results-campaign-table .campaign-results-cell {
    display: flex;
    gap: 6px;
    align-items: center;
}

.mass-campaign-table .campaign-results-cell {
    flex-wrap: nowrap;
    white-space: nowrap;
}

.results-campaign-table .campaign-results-cell {
    flex-wrap: wrap;
}

.mass-campaign-table .campaign-actions,
.results-campaign-table .campaign-actions {
    display: flex;
    flex-wrap: nowrap;
    gap: 8px;
    align-items: center;
}

.mass-campaign-table .campaign-actions .btn,
.results-campaign-table .campaign-actions .btn {
    flex: 0 0 auto;
    width: auto;
    min-height: 34px;
    padding: 7px 11px;
    font-size: 12px;
}

.mass-campaign-table .btn-success,
.mass-campaign-table .btn-warning {
    min-width: 84px;
}

.mass-campaign-table th,
.mass-campaign-table td {
    padding-left: 12px;
    padding-right: 12px;
}

/* Mass Validator page spacing only */
.page-content:has(.mass-validator-page) {
    padding: 12px 14px 24px;
}

.mass-validator-page {
    width: 100%;
}

.mass-validator-card .card-header {
    padding: 18px 24px;
}

.mass-validator-card .card-body {
    padding: 24px 24px 18px;
}

.mass-validator-card .input-tab {
    min-height: 38px;
}

.mass-upload-zone {
    padding: 34px 24px;
}

.mass-upload-zone .upload-icon {
    font-size: 40px;
    margin-bottom: 12px;
}

.mass-upload-zone .upload-text {
    margin-bottom: 6px;
}

.mass-mapping-card {
    margin-top: 12px;
}

.mass-validator-card .mt-6 {
    margin-top: 18px;
}

.mass-campaign-list-card {
    margin-top: 18px;
}

@media (max-width: 760px) {
    .page-content:has(.mass-validator-page) {
        padding: 10px;
    }

    .mass-validator-card .card-header,
    .mass-validator-card .card-body {
        padding: 16px;
    }

    .mass-upload-zone {
        padding: 28px 16px;
    }
}