/* ============================================================
   Kerio Migration — Design System
   Premium dark-mode UI with glassmorphism
   ============================================================ */

/* ── Google Fonts ─────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

/* ── CSS Custom Properties ────────────────────────────────── */
:root {
    /* Palette */
    --bg-primary:     #0a0a1a;
    --bg-secondary:   #0f0f2d;
    --bg-card:        rgba(255, 255, 255, 0.04);
    --bg-card-hover:  rgba(255, 255, 255, 0.07);
    --border-glass:   rgba(255, 255, 255, 0.08);
    --border-focus:   rgba(102, 126, 234, 0.5);

    /* Accent Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-glow:    linear-gradient(135deg, #667eea 0%, #9b59b6 50%, #764ba2 100%);
    --gradient-success: linear-gradient(135deg, #00c9a7 0%, #00b4d8 100%);
    --gradient-danger:  linear-gradient(135deg, #ff6b6b 0%, #ee5a24 100%);
    --gradient-bg:      radial-gradient(ellipse at top left, rgba(102,126,234,0.15) 0%, transparent 50%),
                        radial-gradient(ellipse at bottom right, rgba(118,75,162,0.1) 0%, transparent 50%);

    /* Typography */
    --font-family:   'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs:  0.75rem;
    --font-size-sm:  0.875rem;
    --font-size-md:  1rem;
    --font-size-lg:  1.125rem;
    --font-size-xl:  1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;

    /* Text Colors */
    --text-primary:   rgba(255, 255, 255, 0.95);
    --text-secondary: rgba(255, 255, 255, 0.6);
    --text-muted:     rgba(255, 255, 255, 0.35);
    --text-accent:    #667eea;

    /* Spacing */
    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;

    /* Borders & Radius */
    --radius-sm:  8px;
    --radius-md:  12px;
    --radius-lg:  16px;
    --radius-xl:  24px;
    --radius-full: 50%;

    /* Shadows */
    --shadow-sm:   0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md:   0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg:   0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(102, 126, 234, 0.15);

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-med:  0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ── Background Pattern ───────────────────────────────────── */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background: var(--gradient-bg);
    z-index: -2;
    pointer-events: none;
}

body::after {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        radial-gradient(rgba(255,255,255,0.03) 1px, transparent 1px);
    background-size: 32px 32px;
    z-index: -1;
    pointer-events: none;
}

/* ── Layout Container ─────────────────────────────────────── */
.page-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: var(--space-xl);
}

.page-wrapper--top {
    justify-content: flex-start;
    padding-top: var(--space-3xl);
}

/* ── Glass Card ───────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(20px) saturate(150%);
    -webkit-backdrop-filter: blur(20px) saturate(150%);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    width: 100%;
    max-width: 460px;
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    animation: cardFadeIn 0.6s var(--transition-med) both;
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    opacity: 0.8;
}

.card--wide {
    max-width: 1100px;
}

/* ── Logo / Branding ──────────────────────────────────────── */
.brand {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.brand__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    background: var(--gradient-primary);
    margin-bottom: var(--space-md);
    font-size: 28px;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.brand__title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: var(--gradient-glow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.brand__subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
    font-weight: 400;
}

/* ── Form Elements ────────────────────────────────────────── */
.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
    letter-spacing: 0.02em;
}

.form-control {
    width: 100%;
    padding: 14px 16px;
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    outline: none;
    transition: all var(--transition-fast);
}

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

.form-control:focus {
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.15);
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 14px 28px;
    font-family: var(--font-family);
    font-size: var(--font-size-md);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    letter-spacing: 0.01em;
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.3);
}

.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(102, 126, 234, 0.45);
}

.btn--primary:active {
    transform: translateY(0);
}

.btn--success {
    background: var(--gradient-success);
    color: #fff;
    box-shadow: 0 4px 16px rgba(0, 201, 167, 0.3);
}

.btn--success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(0, 201, 167, 0.45);
}

.btn--danger {
    background: var(--gradient-danger);
    color: #fff;
    box-shadow: 0 4px 16px rgba(255, 107, 107, 0.3);
}

.btn--danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 24px rgba(255, 107, 107, 0.45);
}

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

.btn--ghost:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.btn--block {
    width: 100%;
}

.btn--sm {
    padding: 8px 16px;
    font-size: var(--font-size-sm);
}

/* Button shimmer effect */
.btn--primary::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -60%;
    width: 40%;
    height: 200%;
    background: rgba(255, 255, 255, 0.1);
    transform: rotate(25deg);
    transition: left 0.5s ease;
}

.btn--primary:hover::after {
    left: 120%;
}

/* ── Alerts ───────────────────────────────────────────────── */
.alert {
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    animation: alertSlide 0.3s ease-out;
}

.alert--error {
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid rgba(255, 107, 107, 0.25);
    color: #ff8a8a;
}

.alert--success {
    background: rgba(0, 201, 167, 0.1);
    border: 1px solid rgba(0, 201, 167, 0.25);
    color: #00dbb5;
}

.alert--info {
    background: rgba(102, 126, 234, 0.1);
    border: 1px solid rgba(102, 126, 234, 0.25);
    color: #8a9ef5;
}

.alert__icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

/* ── Success Page ─────────────────────────────────────────── */
.success-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 96px;
    height: 96px;
    border-radius: var(--radius-full);
    background: var(--gradient-success);
    margin: 0 auto var(--space-xl);
    animation: successPop 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55) both;
    box-shadow: 0 0 40px rgba(0, 201, 167, 0.25);
}

.success-icon svg {
    width: 48px;
    height: 48px;
    stroke: #fff;
    stroke-width: 3;
    fill: none;
    stroke-linecap: round;
    stroke-linejoin: round;
    animation: checkDraw 0.5s 0.3s ease-out both;
}

.success-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--space-md);
}

.success-message {
    text-align: center;
    color: var(--text-secondary);
    font-size: var(--font-size-md);
    line-height: 1.7;
    margin-bottom: var(--space-2xl);
}

/* ── Admin Dashboard ──────────────────────────────────────── */
.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.admin-header__title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    letter-spacing: -0.03em;
    background: var(--gradient-glow);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.admin-header__actions {
    display: flex;
    gap: var(--space-sm);
}

/* ── Stats Cards ──────────────────────────────────────────── */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-fast);
}

.stat-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-2px);
}

.stat-card__value {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.stat-card__value--success {
    background: var(--gradient-success);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card__value--pending {
    background: var(--gradient-danger);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-card__label {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-top: var(--space-xs);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* ── Data Table ───────────────────────────────────────────── */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-glass);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table thead th {
    background: rgba(255, 255, 255, 0.04);
    padding: var(--space-md) var(--space-lg);
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    font-size: var(--font-size-xs);
    white-space: nowrap;
    border-bottom: 1px solid var(--border-glass);
}

.data-table tbody td {
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.03);
    vertical-align: middle;
}

.data-table tbody tr {
    transition: background var(--transition-fast);
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.03);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

/* Status badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.02em;
}

.badge--success {
    background: rgba(0, 201, 167, 0.12);
    color: #00dbb5;
}

.badge--pending {
    background: rgba(255, 193, 7, 0.12);
    color: #ffd43b;
}

.badge__dot {
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    display: inline-block;
}

.badge--success .badge__dot {
    background: #00dbb5;
    box-shadow: 0 0 6px #00dbb5;
}

.badge--pending .badge__dot {
    background: #ffd43b;
    box-shadow: 0 0 6px #ffd43b;
}

.password-mask {
    color: var(--text-muted);
    letter-spacing: 3px;
    font-family: monospace;
}

/* ── Empty State ──────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: var(--space-3xl) var(--space-xl);
    color: var(--text-muted);
}

.empty-state__icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.empty-state__text {
    font-size: var(--font-size-md);
}

/* ── Footer ───────────────────────────────────────────────── */
.footer {
    text-align: center;
    padding: var(--space-xl) 0;
    color: var(--text-muted);
    font-size: var(--font-size-xs);
}

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

/* ── Animations ───────────────────────────────────────────── */
@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

@keyframes alertSlide {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes successPop {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes checkDraw {
    from {
        stroke-dasharray: 100;
        stroke-dashoffset: 100;
    }
    to {
        stroke-dasharray: 100;
        stroke-dashoffset: 0;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
    .page-wrapper {
        padding: var(--space-md);
    }

    .card {
        padding: var(--space-xl);
    }

    .card--wide {
        max-width: 100%;
    }

    .admin-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .data-table {
        font-size: var(--font-size-xs);
    }

    .data-table thead th,
    .data-table tbody td {
        padding: var(--space-sm) var(--space-md);
    }

    .brand__title {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 480px) {
    .card {
        padding: var(--space-lg);
        border-radius: var(--radius-md);
    }

    .btn {
        padding: 12px 20px;
        font-size: var(--font-size-sm);
    }

    .success-icon {
        width: 72px;
        height: 72px;
    }

    .success-icon svg {
        width: 36px;
        height: 36px;
    }
}