/* =====================================================
   ChatNexus Unified Theme v2
   Consistent color palette and styling
   ===================================================== */

:root {
    /* Primary Colors - Purple/Violet Gradient */
    /* Current: Blue-purple (#667eea → #764ba2) */
    --cn-primary: #667eea;
    --cn-primary-dark: #5a67d8;
    --cn-secondary: #764ba2;
    --cn-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --cn-gradient-dark: linear-gradient(135deg, #5a67d8 0%, #6b46a0 100%);
    
    /* Alternative: Original site magenta-purple (#a733bb → #7d4ac7) */
    /* --cn-primary: #a733bb;
    --cn-primary-dark: #9429a8;
    --cn-secondary: #7d4ac7;
    --cn-gradient: linear-gradient(135deg, #a733bb 0%, #7d4ac7 100%);
    --cn-gradient-dark: linear-gradient(135deg, #9429a8 0%, #6b3fb5 100%); */
    
    /* Accent Colors */
    --cn-success: #10b981;
    --cn-success-light: #d1fae5;
    --cn-accent: #00d4aa;
    
    /* Neutral Colors */
    --cn-white: #ffffff;
    --cn-gray-50: #f9fafb;
    --cn-gray-100: #f3f4f6;
    --cn-gray-200: #e5e7eb;
    --cn-gray-300: #d1d5db;
    --cn-gray-500: #6b7280;
    --cn-gray-700: #374151;
    --cn-gray-900: #111827;
    
    /* Text Colors */
    --cn-text-primary: #1f2937;
    --cn-text-secondary: #6b7280;
    --cn-text-muted: #9ca3af;
    
    /* Shadows */
    --cn-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --cn-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --cn-shadow-md: 0 10px 25px -5px rgba(0, 0, 0, 0.1);
    --cn-shadow-lg: 0 20px 50px -12px rgba(0, 0, 0, 0.15);
    --cn-shadow-purple: 0 20px 50px rgba(102, 126, 234, 0.2);
    
    /* Border Radius */
    --cn-radius-sm: 8px;
    --cn-radius: 12px;
    --cn-radius-lg: 16px;
    --cn-radius-xl: 24px;
    --cn-radius-full: 9999px;
    
    /* Spacing */
    --cn-section-padding: 80px 0;
    --cn-section-padding-lg: 100px 0;
}

/* ===== Section Backgrounds ===== */
.cn-section-white {
    background: var(--cn-white);
}

.cn-section-light {
    background: var(--cn-gray-50);
}

.cn-section-gradient {
    background: var(--cn-gradient);
}

.cn-section-dark {
    background: var(--cn-gray-900);
}

/* ===== Typography ===== */
.cn-heading-xl {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    line-height: 1.2;
    color: var(--cn-text-primary);
}

.cn-heading-lg {
    font-size: clamp(28px, 4vw, 36px);
    font-weight: 700;
    line-height: 1.3;
    color: var(--cn-text-primary);
}

.cn-heading-md {
    font-size: clamp(20px, 3vw, 24px);
    font-weight: 600;
    line-height: 1.4;
    color: var(--cn-text-primary);
}

.cn-text-lg {
    font-size: 18px;
    line-height: 1.6;
    color: var(--cn-text-secondary);
}

.cn-text {
    font-size: 16px;
    line-height: 1.6;
    color: var(--cn-text-secondary);
}

.cn-text-sm {
    font-size: 14px;
    line-height: 1.5;
    color: var(--cn-text-muted);
}

/* White text variants */
.cn-heading-xl.text-white,
.cn-heading-lg.text-white,
.cn-heading-md.text-white {
    color: var(--cn-white);
}

.cn-text-lg.text-white,
.cn-text.text-white {
    color: rgba(255, 255, 255, 0.9);
}

/* ===== Cards ===== */
.cn-card {
    background: var(--cn-white);
    border-radius: var(--cn-radius-lg);
    padding: 30px;
    box-shadow: var(--cn-shadow);
    transition: all 0.3s ease;
}

.cn-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--cn-shadow-lg);
}

.cn-card-gradient {
    background: var(--cn-gradient);
    border-radius: var(--cn-radius-xl);
    padding: 40px;
    box-shadow: var(--cn-shadow-purple);
}

.cn-card-bordered {
    background: var(--cn-white);
    border: 2px solid var(--cn-gray-200);
    border-radius: var(--cn-radius-lg);
    padding: 30px;
    transition: all 0.3s ease;
}

.cn-card-bordered:hover {
    border-color: var(--cn-primary);
    box-shadow: var(--cn-shadow-purple);
}

/* ===== Buttons ===== */
.cn-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    border-radius: var(--cn-radius-full);
    font-weight: 600;
    font-size: 16px;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.cn-btn-primary {
    background: var(--cn-gradient);
    color: var(--cn-white);
    box-shadow: var(--cn-shadow-md);
}

.cn-btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--cn-shadow-purple);
    color: var(--cn-white);
    text-decoration: none;
}

.cn-btn-white {
    background: var(--cn-white);
    color: var(--cn-primary);
    box-shadow: var(--cn-shadow-md);
}

.cn-btn-white:hover {
    transform: translateY(-2px);
    box-shadow: var(--cn-shadow-lg);
    color: var(--cn-primary);
    text-decoration: none;
}

.cn-btn-outline {
    background: transparent;
    color: var(--cn-primary);
    border: 2px solid var(--cn-primary);
}

.cn-btn-outline:hover {
    background: var(--cn-primary);
    color: var(--cn-white);
    text-decoration: none;
}

.cn-btn-outline-white {
    background: transparent;
    color: var(--cn-white);
    border: 2px solid var(--cn-white);
}

.cn-btn-outline-white:hover {
    background: var(--cn-white);
    color: var(--cn-primary);
    text-decoration: none;
}

.cn-btn-lg {
    padding: 18px 40px;
    font-size: 18px;
}

/* ===== Badges ===== */
.cn-badge {
    display: inline-flex;
    align-items: center;
    padding: 8px 16px;
    border-radius: var(--cn-radius-full);
    font-size: 14px;
    font-weight: 600;
}

.cn-badge-success {
    background: var(--cn-success-light);
    color: var(--cn-success);
}

.cn-badge-primary {
    background: rgba(102, 126, 234, 0.15);
    color: var(--cn-primary);
}

.cn-badge-accent {
    background: rgba(0, 212, 170, 0.15);
    color: var(--cn-accent);
}

/* ===== Feature Icons ===== */
.cn-icon-box {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--cn-radius);
    background: rgba(102, 126, 234, 0.1);
    font-size: 28px;
    margin-bottom: 20px;
}

.cn-icon-box-lg {
    width: 80px;
    height: 80px;
    font-size: 36px;
}

/* ===== Check Lists ===== */
.cn-checklist {
    list-style: none;
    padding: 0;
    margin: 0;
}

.cn-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 16px;
    color: var(--cn-text-secondary);
}

.cn-checklist li::before {
    content: '✓';
    color: var(--cn-success);
    font-weight: 700;
    flex-shrink: 0;
}

/* ===== Dividers ===== */
.cn-divider {
    height: 1px;
    background: var(--cn-gray-200);
    margin: 40px 0;
}

/* ===== Stats Grid ===== */
.cn-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.cn-stat {
    text-align: center;
}

.cn-stat-value {
    font-size: 48px;
    font-weight: 800;
    color: var(--cn-primary);
    line-height: 1;
    margin-bottom: 8px;
}

.cn-stat-label {
    font-size: 14px;
    color: var(--cn-text-secondary);
    font-weight: 500;
}

/* White stat variant */
.cn-stat-value.text-white {
    color: var(--cn-white);
}

.cn-stat-label.text-white {
    color: rgba(255, 255, 255, 0.8);
}

/* ===== Section Headers ===== */
.cn-section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

.cn-section-header h2 {
    margin-bottom: 16px;
}

.cn-section-header p {
    margin: 0;
}

/* ===== Highlight Spans ===== */
.cn-highlight {
    background: linear-gradient(120deg, rgba(102, 126, 234, 0.2), rgba(118, 75, 162, 0.2));
    padding: 2px 8px;
    border-radius: 4px;
}

.cn-highlight-white {
    background: rgba(255, 255, 255, 0.2);
    padding: 4px 12px;
    border-radius: 8px;
}

/* ===== Trust Indicators ===== */
.cn-trust-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    align-items: center;
    justify-content: center;
}

.cn-trust-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--cn-text-secondary);
}

.cn-trust-item .check {
    color: var(--cn-success);
    font-weight: 700;
}

/* ===== Responsive ===== */

/* Tablet */
@media (max-width: 992px) {
    .cn-heading-xl {
        font-size: 36px;
    }
    
    .cn-heading-lg {
        font-size: 28px;
    }
    
    .cn-section-header {
        margin-bottom: 40px;
    }
    
    .cn-btn-lg {
        padding: 14px 28px;
        font-size: 16px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --cn-section-padding: 50px 0;
        --cn-section-padding-lg: 60px 0;
    }
    
    .cn-heading-xl {
        font-size: 28px;
        line-height: 1.3;
    }
    
    .cn-heading-lg {
        font-size: 24px;
    }
    
    .cn-heading-md {
        font-size: 18px;
    }
    
    .cn-text-lg {
        font-size: 16px;
    }
    
    .cn-card,
    .cn-card-bordered {
        padding: 20px;
    }
    
    .cn-card-gradient {
        padding: 24px;
        border-radius: var(--cn-radius-lg);
    }
    
    .cn-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .cn-stat-value {
        font-size: 32px;
    }
    
    .cn-stat-label {
        font-size: 12px;
    }
    
    .cn-btn {
        padding: 12px 24px;
        font-size: 14px;
        width: 100%;
        justify-content: center;
    }
    
    .cn-btn-lg {
        padding: 14px 28px;
        font-size: 16px;
    }
    
    .cn-section-header {
        margin-bottom: 30px;
        padding: 0 10px;
    }
    
    .cn-icon-box {
        width: 56px;
        height: 56px;
        font-size: 24px;
    }
    
    .cn-icon-box-lg {
        width: 64px;
        height: 64px;
        font-size: 28px;
    }
    
    .cn-checklist li {
        font-size: 14px;
        margin-bottom: 8px;
    }
    
    .cn-trust-row {
        justify-content: center;
        gap: 12px;
    }
    
    .cn-trust-item {
        font-size: 12px;
    }
    
    .cn-badge {
        padding: 6px 12px;
        font-size: 12px;
    }
    
    /* Stack buttons on mobile */
    .d-flex.gap-3 {
        flex-direction: column;
        align-items: stretch;
    }
    
    .d-flex.gap-3 .cn-btn {
        margin-bottom: 10px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --cn-section-padding: 40px 0;
        --cn-section-padding-lg: 50px 0;
    }
    
    .cn-heading-xl {
        font-size: 24px;
    }
    
    .cn-heading-lg {
        font-size: 22px;
    }
    
    .cn-stats {
        grid-template-columns: 1fr 1fr;
        gap: 15px;
    }
    
    .cn-stat-value {
        font-size: 28px;
    }
    
    .cn-card,
    .cn-card-bordered {
        padding: 16px;
    }
}