/* ==========================================================================
   Головний файл стилів (Modern Dark Theme & Glassmorphism)
   ========================================================================== */

:root {
    --bg-primary: #0a0e17;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.65);
    --border-color: rgba(255, 255, 255, 0.07);
    --border-focus: rgba(99, 102, 241, 0.5);
    
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --accent: #6366f1; /* Indigo */
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.25);
    
    --tg-color: #24a1de; /* Telegram Blue */
    --tg-glow: rgba(36, 161, 222, 0.3);
    
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.1);
    
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Outfit', sans-serif;
    
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
}

/* Скидання базових стилів */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
}

/* Декоративні фонові градієнти */
body::before, body::after {
    content: '';
    position: absolute;
    width: 350px;
    height: 350px;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.45;
}

body::before {
    background: radial-gradient(circle, var(--accent) 0%, transparent 70%);
    top: -100px;
    left: -100px;
}

body::after {
    background: radial-gradient(circle, var(--tg-color) 0%, transparent 70%);
    bottom: -100px;
    right: -100px;
}

/* ==========================================================================
   Стилі для екрану редіректу (redirect.php)
   ========================================================================== */
.redirect-page {
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.glass-container {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 40px 30px;
    width: 100%;
    max-width: 480px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-normal);
}

.telegram-logo-wrapper {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
}

.telegram-icon {
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 4px 10px var(--tg-glow));
}

.pulse-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: var(--tg-color);
    opacity: 0.25;
    animation: pulse 2s infinite ease-out;
    z-index: 1;
    top: 0;
    left: 0;
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        opacity: 0.35;
    }
    100% {
        transform: scale(1.6);
        opacity: 0;
    }
}

.redirect-title {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 12px;
    background: linear-gradient(135deg, #fff 30%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.redirect-text {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
    margin-bottom: 24px;
}

.loader-track {
    width: 100%;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 30px;
}

.loader-bar {
    width: 0%;
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--tg-color));
    border-radius: 10px;
    animation: loading 1.2s forwards cubic-bezier(0.1, 0.8, 0.2, 1);
}

@keyframes loading {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* Кнопки */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 15px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    width: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-hover) 100%);
    color: #fff;
    box-shadow: 0 4px 15px var(--accent-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--accent-glow);
    filter: brightness(1.1);
}

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

/* ==========================================================================
   Стилі для сторінки входу (login.php)
   ========================================================================== */
.login-page {
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.login-card {
    max-width: 400px;
}

.form-group {
    text-align: left;
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-primary);
    font-size: 15px;
    transition: all var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.06);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

.alert {
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    margin-bottom: 20px;
    text-align: left;
    border-left: 4px solid transparent;
}

.alert-danger {
    background-color: var(--danger-bg);
    border-color: var(--danger);
    color: #fca5a5;
}

.alert-success {
    background-color: var(--success-bg);
    border-color: var(--success);
    color: #86efac;
}

/* ==========================================================================
   Панель байера (panel.php)
   ========================================================================== */
.panel-header {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: 15px 30px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-text {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 800;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, #fff 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-info {
    font-size: 14px;
    color: var(--text-secondary);
}

.user-role {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    margin-left: 5px;
    font-weight: 600;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-fast);
}

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

/* Основний контент панелі */
.panel-main {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 20px;
    width: 100%;
    flex: 1;
}

.dashboard-title-row {
    margin-bottom: 25px;
}

.dashboard-title {
    font-family: var(--font-display);
    font-size: 28px;
    font-weight: 800;
}

/* Картки метрик (Metrics Grid) */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.metric-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.metric-title {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    margin-bottom: 10px;
}

.metric-value {
    font-family: var(--font-display);
    font-size: 32px;
    font-weight: 700;
    line-height: 1.1;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background-color: var(--accent);
}

.metric-card.conversions::before { background-color: var(--success); }
.metric-card.duplicates::before { background-color: var(--warning); }
.metric-card.cr::before { background-color: var(--tg-color); }

/* Фільтри */
.filter-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
    margin-bottom: 30px;
}

.filter-form {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 15px;
}

.filter-group {
    flex: 1;
    min-width: 180px;
}

.btn-filter {
    background-color: var(--accent);
    color: #fff;
    padding: 11px 24px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.btn-filter:hover {
    background-color: var(--accent-hover);
}

/* Таблиці статистики */
.table-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.table-header-box {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.table-title {
    font-family: var(--font-display);
    font-size: 18px;
    font-weight: 700;
}

.table-responsive {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

th {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

tr:hover td {
    background: rgba(255, 255, 255, 0.01);
}

.badge {
    display: inline-flex;
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

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

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

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

/* Керування користувачами (Адмінка) */
.admin-section {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media(min-width: 992px) {
    .admin-section {
        grid-template-columns: 2fr 1fr;
    }
}

.btn-danger {
    background-color: var(--danger-bg);
    border: 1px solid var(--danger);
    color: #fca5a5;
    padding: 6px 12px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 12px;
    font-weight: 600;
}

.btn-danger:hover {
    background-color: var(--danger);
    color: #fff;
}

/* SVG графіки спрощені */
.chart-container {
    height: 120px;
    display: flex;
    align-items: flex-end;
    gap: 4px;
    padding-top: 10px;
}

.chart-bar-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    justify-content: flex-end;
}

.chart-bar {
    width: 100%;
    background: linear-gradient(180deg, var(--accent) 0%, rgba(99, 102, 241, 0.2) 100%);
    border-radius: 3px 3px 0 0;
    min-height: 4px;
    transition: height 0.5s ease;
    cursor: pointer;
    position: relative;
}

.chart-bar:hover {
    filter: brightness(1.2);
}

.chart-bar:hover::after {
    content: attr(data-value);
    position: absolute;
    top: -24px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-secondary);
    color: #fff;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    white-space: nowrap;
    z-index: 10;
}

.chart-label {
    font-size: 9px;
    color: var(--text-muted);
    margin-top: 5px;
    text-align: center;
    white-space: nowrap;
    overflow: hidden;
    max-width: 40px;
}

/* ==========================================================================
   Світла тема (Day Theme)
   ========================================================================== */
body.light-theme {
    --bg-primary: #f8fafc;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.8);
    --border-color: rgba(0, 0, 0, 0.08);
    --border-focus: rgba(99, 102, 241, 0.6);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --accent: #4f46e5;
    --accent-hover: #4338ca;
    --accent-glow: rgba(79, 70, 229, 0.15);
    
    --tg-color: #0284c7;
    --tg-glow: rgba(2, 132, 199, 0.15);
    
    --success-bg: rgba(16, 185, 129, 0.12);
    --warning-bg: rgba(245, 158, 11, 0.12);
    --danger-bg: rgba(239, 68, 68, 0.12);
}

/* Примусове застосування кольорів теми до випадних списків */
select option {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

body.light-theme::before {
    background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
}

body.light-theme::after {
    background: radial-gradient(circle, rgba(36, 161, 222, 0.1) 0%, transparent 70%);
}

body.light-theme .form-input {
    background: rgba(0, 0, 0, 0.02);
    color: var(--text-primary);
}

body.light-theme .form-input:focus {
    background: rgba(0, 0, 0, 0.04);
}

body.light-theme .chart-bar:hover::after {
    background: #ffffff;
    color: #1f2937;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

body.light-theme th {
    background: rgba(0, 0, 0, 0.01);
}

body.light-theme tr:hover td {
    background: rgba(0, 0, 0, 0.01);
}

body.light-theme .user-role {
    background: rgba(0, 0, 0, 0.06);
    color: var(--text-primary);
}

body.light-theme .btn-outline:hover {
    background: rgba(0, 0, 0, 0.04);
}

body.light-theme .redirect-title {
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

body.light-theme .alert-danger {
    color: #991b1b;
}

body.light-theme .alert-success {
    color: #166534;
}

body.light-theme .loader-track {
    background-color: rgba(0, 0, 0, 0.05);
}

body.light-theme .btn-danger {
    color: #991b1b;
}

body.light-theme .btn-danger:hover {
    color: #ffffff;
}

/* Перемикачі мови та теми (Header Controls) */
.header-controls {
    display: flex;
    align-items: center;
    gap: 12px;
}

.theme-toggle-btn, .lang-toggle-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
    font-weight: 600;
    font-size: 13px;
    text-decoration: none;
}

.theme-toggle-btn:hover, .lang-toggle-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.05);
}

body.light-theme .theme-toggle-btn, body.light-theme .lang-toggle-btn {
    background: rgba(0, 0, 0, 0.03);
}

body.light-theme .theme-toggle-btn:hover, body.light-theme .lang-toggle-btn:hover {
    background: rgba(0, 0, 0, 0.06);
}