/* WhatsApp Broadcast System - Main Styles */

:root {
    /* WhatsApp-inspired color palette */
    --primary: #25D366;
    --primary-dark: #128C7E;
    --primary-light: #DCF8C6;
    --secondary: #075E54;
    --accent: #34B7F1;
    
    /* Neutral colors */
    --bg-primary: #111B21;
    --bg-secondary: #1F2C33;
    --bg-tertiary: #2A3942;
    --bg-card: #202C33;
    
    --text-primary: #E9EDEF;
    --text-secondary: #8696A0;
    --text-muted: #667781;
    
    /* Status colors */
    --success: #25D366;
    --warning: #FFB800;
    --danger: #F15C6D;
    --info: #34B7F1;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    
    /* Borders */
    --border-color: #2A3942;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    
    /* Transitions */
    --transition: all 0.2s ease;
}

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

html {
    font-size: 14px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
}

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

a:hover {
    color: var(--primary);
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 260px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s ease;
}

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

.sidebar-logo {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.sidebar-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 0;
    overflow-y: auto;
}

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

.nav-section-title {
    padding: 8px 20px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    border-left: 3px solid transparent;
}

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

.nav-item.active {
    background: rgba(37, 211, 102, 0.1);
    color: var(--primary);
    border-left-color: var(--primary);
}

.nav-item i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.nav-badge {
    margin-left: auto;
    background: var(--primary);
    color: var(--bg-primary);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-weight: 600;
}

.user-details {
    flex: 1;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.user-role {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 16px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.header-title {
    font-size: 1.5rem;
    font-weight: 600;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Page Content */
.page-content {
    flex: 1;
    padding: 24px;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-body {
    padding: 20px;
}

.card-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 20px;
    display: flex;
    align-items: flex-start;
    gap: 16px;
    transition: var(--transition);
}

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

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.stat-icon.primary { background: rgba(37, 211, 102, 0.15); color: var(--primary); }
.stat-icon.info { background: rgba(52, 183, 241, 0.15); color: var(--info); }
.stat-icon.warning { background: rgba(255, 184, 0, 0.15); color: var(--warning); }
.stat-icon.danger { background: rgba(241, 92, 109, 0.15); color: var(--danger); }

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-change {
    font-size: 0.75rem;
    margin-top: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-change.positive { color: var(--success); }
.stat-change.negative { color: var(--danger); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #d94455;
}

.btn-icon {
    width: 36px;
    height: 36px;
    padding: 0;
    border-radius: 50%;
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 14px 28px;
    font-size: 1rem;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

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

.form-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 211, 102, 0.15);
}

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

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%238696A0' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-check {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.form-check input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 6px;
}

.form-error {
    font-size: 0.8rem;
    color: var(--danger);
    margin-top: 6px;
}

/* Tables */
.table-container {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table th {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg-secondary);
}

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

.table tbody tr:hover {
    background: var(--bg-tertiary);
}

.table-actions {
    display: flex;
    gap: 8px;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge-success { background: rgba(37, 211, 102, 0.15); color: var(--success); }
.badge-warning { background: rgba(255, 184, 0, 0.15); color: var(--warning); }
.badge-danger { background: rgba(241, 92, 109, 0.15); color: var(--danger); }
.badge-info { background: rgba(52, 183, 241, 0.15); color: var(--info); }
.badge-secondary { background: var(--bg-tertiary); color: var(--text-secondary); }

/* Tags */
.tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.tag-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    transform: scale(0.95);
    transition: var(--transition);
}

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

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

.modal-title {
    font-size: 1.1rem;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    max-height: calc(90vh - 140px);
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.modal-lg {
    max-width: 700px;
}

.modal-xl {
    max-width: 900px;
}

/* Search */
.search-box {
    position: relative;
}

.search-box input {
    padding-left: 44px;
}

.search-box i {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

/* Pagination */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination-btn {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--border-color);
    color: var(--text-primary);
}

.pagination-btn.active {
    background: var(--primary);
    color: var(--bg-primary);
    border-color: var(--primary);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Alerts */
.alert {
    padding: 14px 16px;
    border-radius: var(--border-radius);
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.alert-success { background: rgba(37, 211, 102, 0.15); color: var(--success); }
.alert-warning { background: rgba(255, 184, 0, 0.15); color: var(--warning); }
.alert-danger { background: rgba(241, 92, 109, 0.15); color: var(--danger); }
.alert-info { background: rgba(52, 183, 241, 0.15); color: var(--info); }

.alert i {
    font-size: 1.25rem;
    margin-top: 2px;
}

/* Progress */
.progress {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: var(--primary);
    border-radius: 4px;
    transition: width 0.3s ease;
}

.progress-bar.warning { background: var(--warning); }
.progress-bar.danger { background: var(--danger); }

/* Tabs */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 20px;
}

.tab {
    padding: 12px 20px;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab:hover {
    color: var(--text-primary);
}

.tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

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

.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); }

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

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

.empty-state i {
    font-size: 4rem;
    margin-bottom: 16px;
    opacity: 0.3;
}

.empty-state h3 {
    color: var(--text-secondary);
    margin-bottom: 8px;
}

/* Chart Container */
.chart-container {
    height: 300px;
    position: relative;
}

/* Login Page */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 400px;
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 16px;
}

.login-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.login-subtitle {
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .header {
        padding: 12px 16px;
    }
    
    .page-content {
        padding: 16px;
    }
    
    .modal {
        margin: 10px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-muted); }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-warning { color: var(--warning); }

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }

.hidden { display: none !important; }