/* =================================================================
   CHEMCONNECT - INDUSTRIAL B2B DESIGN SYSTEM
   Clean, Modern Industrial Aesthetic for Professional B2B Platform
   ================================================================= */

/* 1. CSS VARIABLES - Industrial Color Palette
   -------------------------------------------------------------- */
:root {
    /* Primary Industrial Colors */
    --color-primary: #1a365d;           /* Deep Navy Blue - Professional & Trustworthy */
    --color-primary-light: #2d4a73;
    --color-primary-darker: #0f1f3d;
    
    /* Accent Colors */
    --color-accent: #7ed957;            /* Lime Green from logo - Energy & Growth */
    --color-accent-hover: #6bc947;
    --color-accent-light: #9fe575;
    
    /* Neutral Industrial Tones */
    --color-steel: #4a5568;             /* Steel Gray - Industrial */
    --color-steel-light: #718096;
    --color-steel-dark: #2d3748;
    
    /* Background & Surface */
    --color-bg: #f7fafc;                /* Light Gray - Clean workspace */
    --color-surface: #ffffff;
    --color-surface-secondary: #edf2f7;
    
    /* Text Colors */
    --color-text: #2d3748;
    --color-text-secondary: #4a5568;
    --color-text-light: #718096;
    
    /* Borders & Dividers */
    --color-border: #cbd5e0;
    --color-border-light: #e2e8f0;
    
    /* Status Colors */
    --color-success: #48bb78;
    --color-warning: #ed8936;
    --color-danger: #f56565;
    --color-info: #4299e1;
    
    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Spacing & Layout */
    --border-radius-sm: 4px;
    --border-radius: 8px;
    --border-radius-lg: 12px;
    --border-radius-xl: 16px;
    
    /* Shadows - Subtle Industrial */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.3s ease;
}

/* 2. BASE & RESET STYLES
   -------------------------------------------------------------- */
* {
    box-sizing: border-box;
}

body {
    background-color: var(--color-bg);
    font-family: var(--font-family-base);
    color: var(--color-text);
    line-height: 1.6;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
}

main {
    flex-grow: 1;
}

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

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

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    line-height: 1.3;
}

/* 3. NAVIGATION
   -------------------------------------------------------------- */
.navbar {
    background-color: var(--color-surface);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1020;
    border-bottom: 3px solid var(--color-accent);
}

.navbar-brand {
    color: var(--color-primary) !important;
    font-weight: var(--font-weight-black);
    font-size: 1.5rem;
    letter-spacing: -0.02em;
    transition: transform var(--transition-base);
}

.navbar-brand:hover {
    transform: translateY(-1px);
    color: var(--color-accent) !important;
}

.nav-link {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-base);
}

.nav-link:hover {
    color: var(--color-accent);
    background-color: var(--color-surface-secondary);
}

/* Navigation Search Form */
#nav-search-form .form-control {
    border-color: var(--color-border);
    background-color: var(--color-surface-secondary);
}

#nav-search-form .form-control:focus {
    border-color: var(--color-accent);
    background-color: var(--color-surface);
}

/* 4. BUTTONS
   -------------------------------------------------------------- */
.btn {
    border-radius: var(--border-radius);
    font-weight: var(--font-weight-semibold);
    padding: 0.625rem 1.5rem;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    letter-spacing: 0.01em;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.btn-accent:hover {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-outline-primary:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: white;
}

.btn-outline-secondary {
    border-color: var(--color-steel);
    color: var(--color-steel);
}

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

/* 5. CARDS
   -------------------------------------------------------------- */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    margin-bottom: 1.5rem;
    overflow: hidden;
}

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

.card-header {
    background-color: var(--color-surface-secondary);
    border-bottom: 2px solid var(--color-border);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    padding: 1rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

.card-footer {
    background-color: var(--color-surface-secondary);
    border-top: 1px solid var(--color-border-light);
    padding: 1rem 1.5rem;
}

/* 6. FORMS
   -------------------------------------------------------------- */
.form-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.form-control,
.form-select {
    border-radius: var(--border-radius);
    border: 2px solid var(--color-border);
    padding: 0.625rem 1rem;
    transition: all var(--transition-base);
    background-color: var(--color-surface);
}

.form-control:focus,
.form-select:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(126, 217, 87, 0.1);
    outline: none;
}

.form-control-lg,
.form-select-lg {
    padding: 0.875rem 1.25rem;
    font-size: 1.05rem;
}

/* 7. ALERTS
   -------------------------------------------------------------- */
.alert {
    border-radius: var(--border-radius);
    border-left: 4px solid;
    padding: 1rem 1.25rem;
    font-weight: var(--font-weight-medium);
}

.alert-success {
    background-color: #f0fdf4;
    border-color: var(--color-success);
    color: #166534;
}

.alert-warning {
    background-color: #fffbeb;
    border-color: var(--color-warning);
    color: #92400e;
}

.alert-danger {
    background-color: #fef2f2;
    border-color: var(--color-danger);
    color: #991b1b;
}

.alert-info {
    background-color: #eff6ff;
    border-color: var(--color-info);
    color: #1e40af;
}

/* 8. FOOTER
   -------------------------------------------------------------- */
.footer {
    background: linear-gradient(135deg, var(--color-primary-darker) 0%, var(--color-primary) 100%);
    color: #e2e8f0;
    padding: 3rem 0 1.5rem;
    margin-top: 4rem;
    border-top: 4px solid var(--color-accent);
}

.footer h5 {
    color: white;
    font-weight: var(--font-weight-bold);
    border-bottom: 2px solid var(--color-accent);
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    display: inline-block;
}

.footer a {
    color: #cbd5e0;
    transition: color var(--transition-base);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    margin-top: 2rem;
    font-size: 0.9rem;
}

.footer-bottom .highlight {
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
}

/* 9. HOME PAGE - INDEX
   -------------------------------------------------------------- */
.hero-section {
    padding: 3rem 0;
    text-align: center;
    background: linear-gradient(135deg, var(--color-surface) 0%, var(--color-surface-secondary) 100%);
    border-radius: var(--border-radius-xl);
    margin-bottom: 2rem;
}

.hero-title {
    font-size: 2.75rem;
    font-weight: var(--font-weight-black);
    color: var(--color-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    font-weight: var(--font-weight-medium);
}

/* Search Card */
.search-card {
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--color-accent);
    background-color: var(--color-surface);
}

.search-card .form-label {
    color: var(--color-primary);
}

/* Features Section */
.features-section {
    margin-top: 4rem;
}

.section-title {
    font-size: 2rem;
    font-weight: var(--font-weight-black);
    color: var(--color-primary);
    margin-bottom: 0.75rem;
    text-align: center;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--color-text-secondary);
    text-align: center;
    max-width: 600px;
    margin: 0 auto 2.5rem;
}

.feature-card {
    text-align: center;
    padding: 2rem 1.5rem;
    border: 2px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.feature-icon {
    font-size: 3rem;
    color: var(--color-accent);
    margin-bottom: 1.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background-color: rgba(126, 217, 87, 0.1);
    border-radius: var(--border-radius-lg);
}

.feature-card h5 {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: 0.75rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: var(--border-radius-xl);
    text-align: center;
    margin-top: 4rem;
}

.cta-title {
    font-size: 2rem;
    font-weight: var(--font-weight-black);
    margin-bottom: 1rem;
}

.cta-text {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-section .btn-light {
    background-color: white;
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
    padding: 0.875rem 2rem;
    border: 2px solid white;
}

.cta-section .btn-light:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
}

/* 10. RESULTS PAGE
   -------------------------------------------------------------- */
.results-header {
    margin-bottom: 2rem;
    padding: 1.5rem;
    background-color: var(--color-surface);
    border-radius: var(--border-radius-lg);
    border-left: 4px solid var(--color-accent);
}

/* Product Cards */
.product-card,
.supplier-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    border: 2px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.product-card:hover,
.supplier-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-card-image {
    height: 200px;
    object-fit: contain;
    background-color: var(--color-surface-secondary);
    padding: 1rem;
}

.product-image-placeholder {
    height: 200px;
    background-color: var(--color-surface-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    color: var(--color-border);
}

.product-card-body,
.supplier-card-body {
    flex-grow: 1;
    padding: 1.25rem;
}

.product-card .card-title,
.supplier-card .card-title {
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    font-size: 1.05rem;
    margin-bottom: 0.5rem;
}

.product-card .card-title a,
.supplier-card .card-title a {
    color: var(--color-primary);
    transition: color var(--transition-base);
}

.product-card .card-title a:hover,
.supplier-card .card-title a:hover {
    color: var(--color-accent);
}

.product-card .card-footer,
.supplier-card .card-footer {
    background-color: var(--color-surface-secondary);
    border-top: 2px solid var(--color-border-light);
    padding: 0.875rem 1.25rem;
}

/* Custom Product Card (from suppliers) */
.product-card.border-primary {
    border-color: var(--color-accent);
    background-color: rgba(126, 217, 87, 0.02);
}

.product-card .bg-primary-subtle {
    background-color: rgba(126, 217, 87, 0.1) !important;
}

/* Supplier Avatar */
.supplier-avatar {
    font-size: 1.75rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: var(--border-radius);
    flex-shrink: 0;
}

.supplier-avatar-small {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
    color: white;
    border-radius: var(--border-radius);
    font-size: 1.25rem;
    flex-shrink: 0;
}

.supplier-avatar-small img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: var(--border-radius);
}

/* 11. PRODUCT DETAIL PAGE
   -------------------------------------------------------------- */
.detail-header {
    padding: 2rem;
    border-left: 4px solid var(--color-accent);
}

.product-image-container img {
    max-height: 350px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    display: block;
    margin: auto;
    border-radius: var(--border-radius);
}

.product-image-placeholder {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 6rem;
    color: var(--color-border);
    background-color: var(--color-surface-secondary);
    border-radius: var(--border-radius);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1rem;
}

.info-item {
    background-color: var(--color-surface-secondary);
    padding: 1rem;
    border-radius: var(--border-radius);
    border-left: 3px solid var(--color-accent);
    text-align: left;
}

.info-label {
    font-size: 0.75rem;
    color: var(--color-text-light);
    font-weight: var(--font-weight-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.info-value {
    font-size: 1rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

/* Supplier Info Grid */
.supplier-info-grid {
    display: grid;
    grid-template-columns: 200px 1fr;
    gap: 0.75rem;
    align-items: start;
}

.supplier-info-label {
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-secondary);
    padding: 0.625rem;
    background-color: var(--color-surface-secondary);
    border-radius: var(--border-radius-sm);
}

.supplier-info-value {
    padding: 0.625rem;
    border-left: 3px solid var(--color-accent);
    background-color: var(--color-surface);
    border-radius: var(--border-radius-sm);
    word-break: break-word;
    font-weight: var(--font-weight-medium);
}

/* Filter Card */
.filter-card {
    border: 2px solid var(--color-border);
    position: sticky;
    top: 100px;
}

.filter-card .card-header {
    background-color: var(--color-primary);
    color: white;
    font-weight: var(--font-weight-bold);
}

.filter-list {
    padding-left: 0;
    max-height: 60vh;
    overflow-y: auto;
}

.filter-list .form-check {
    padding: 0.5rem 0;
    transition: background-color var(--transition-base);
}

.filter-list .form-check:hover {
    background-color: var(--color-surface-secondary);
    padding-left: 0.5rem;
    border-radius: var(--border-radius-sm);
}

.filter-list .form-check-input:checked {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.filter-list .form-check-label {
    cursor: pointer;
    font-weight: var(--font-weight-medium);
}

/* 12. DASHBOARD
   -------------------------------------------------------------- */
.list-group-item.active {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    font-weight: var(--font-weight-semibold);
}

.list-group-item-action:hover {
    background-color: var(--color-surface-secondary);
    color: var(--color-primary);
}

/* 13. TABLES
   -------------------------------------------------------------- */
.table {
    color: var(--color-text);
}

.table thead {
    background-color: var(--color-surface-secondary);
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(126, 217, 87, 0.03);
}

.table-hover tbody tr:hover {
    background-color: rgba(126, 217, 87, 0.08);
}

/* 14. BADGES
   -------------------------------------------------------------- */
.badge {
    border-radius: var(--border-radius-sm);
    font-weight: var(--font-weight-semibold);
    padding: 0.4em 0.8em;
    letter-spacing: 0.02em;
}

.bg-secondary {
    background-color: var(--color-steel) !important;
}

.text-primary {
    color: var(--color-primary) !important;
}

.text-muted {
    color: var(--color-text-light) !important;
}

/* 15. MODALS
   -------------------------------------------------------------- */
.modal-content {
    border-radius: var(--border-radius-lg);
    border: none;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    background-color: var(--color-surface-secondary);
    border-bottom: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg) var(--border-radius-lg) 0 0;
}

.modal-title {
    color: var(--color-primary);
    font-weight: var(--font-weight-bold);
}

.modal-footer {
    background-color: var(--color-surface-secondary);
    border-top: 1px solid var(--color-border-light);
}

/* 16. PAGINATION
   -------------------------------------------------------------- */
.pagination {
    margin-top: 2rem;
}

.page-link {
    color: var(--color-primary);
    border: 2px solid var(--color-border);
    font-weight: var(--font-weight-semibold);
    border-radius: var(--border-radius);
    margin: 0 0.25rem;
}

.page-link:hover {
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-primary);
}

.page-item.disabled .page-link {
    background-color: var(--color-surface-secondary);
    border-color: var(--color-border-light);
}

/* 17. CONVERSATIONS & MESSAGES
   -------------------------------------------------------------- */
.message-thread {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: 60vh;
    overflow-y: auto;
    padding: 1.5rem;
    border: 2px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    background-color: var(--color-surface-secondary);
}

.message-bubble {
    padding: 0.875rem 1.25rem;
    border-radius: var(--border-radius-lg);
    max-width: 75%;
    word-wrap: break-word;
    box-shadow: var(--shadow-sm);
}

.message-bubble.sent {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    color: var(--color-primary);
    border-bottom-right-radius: var(--border-radius-sm);
    align-self: flex-end;
    font-weight: var(--font-weight-medium);
}

.message-bubble.received {
    background-color: white;
    color: var(--color-text);
    border: 2px solid var(--color-border-light);
    border-bottom-left-radius: var(--border-radius-sm);
    align-self: flex-start;
}

.message-sender {
    font-size: 0.8rem;
    margin-bottom: 0.25rem;
    font-weight: var(--font-weight-semibold);
}

.message-time {
    font-weight: var(--font-weight-normal);
    margin-left: 0.5rem;
    opacity: 0.7;
}

/* 18. UTILITIES
   -------------------------------------------------------------- */
.gradient-text {
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.animate-in {
    animation: fadeInUp 0.6s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 19. RESPONSIVE DESIGN
   -------------------------------------------------------------- */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.25rem;
    }
    
    .supplier-info-grid {
        grid-template-columns: 1fr;
    }
    
    .info-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .search-card {
        padding: 1.5rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .filter-card {
        position: static;
    }
    
    .message-bubble {
        max-width: 85%;
    }
}

/* 20. PRINT STYLES
   -------------------------------------------------------------- */
@media print {
    .navbar,
    .footer,
    .btn,
    .d-print-none {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--color-border);
    }
}




/* =================================================================
   AI ASSISTANT WIDGET
   ================================================================= */

/* دکمه شناور (FAB) */
.ai-fab {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%); /* گرادینت بنفش */
    color: white;
    border-radius: 50%;
    border: none;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    cursor: pointer;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.ai-fab:hover {
    transform: scale(1.1) rotate(5deg);
}

/* پنجره چت */
.ai-chat-widget {
    position: fixed;
    bottom: 100px;
    right: 30px;
    width: 350px;
    height: 500px;
    background: white;
    border-radius: 16px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
    z-index: 9998;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform-origin: bottom right;
    transition: all 0.3s ease;
    
    /* حالت بسته (مخفی) */
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
}

.ai-chat-widget.active {
    opacity: 1;
    transform: scale(1);
    pointer-events: all;
}

/* هدر پنجره */
.ai-header {
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    color: white;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ai-header h5 {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
}

.ai-close-btn {
    background: transparent;
    border: none;
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0.8;
}

.ai-close-btn:hover { opacity: 1; }

/* ناحیه پیام‌ها */
.ai-messages-area {
    flex-grow: 1;
    padding: 15px;
    overflow-y: auto;
    background-color: #f8fafc;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

/* حباب‌های پیام */
.ai-msg {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.5;
    word-wrap: break-word;
}

.ai-msg-bot {
    background-color: white;
    color: #334155;
    align-self: flex-start;
    border-bottom-left-radius: 2px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.ai-msg-user {
    background-color: #6366f1;
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

/* چیپ‌های پیشنهاد */
.ai-suggestions {
    padding: 10px 15px;
    display: flex;
    gap: 8px;
    overflow-x: auto;
    border-top: 1px solid #eee;
    background: white;
    white-space: nowrap;
}

.suggestion-chip {
    background-color: #eff6ff;
    color: #6366f1;
    border: 1px solid #e0e7ff;
    border-radius: 20px;
    padding: 5px 12px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.suggestion-chip:hover {
    background-color: #6366f1;
    color: white;
}

/* ناحیه ورودی متن */
.ai-input-area {
    padding: 12px;
    background: white;
    border-top: 1px solid #eee;
    display: flex;
    gap: 10px;
}

.ai-input-area input {
    flex-grow: 1;
    border: 1px solid #cbd5e1;
    border-radius: 20px;
    padding: 8px 15px;
    font-size: 0.9rem;
    outline: none;
}

.ai-input-area input:focus {
    border-color: #6366f1;
}

.ai-send-btn {
    background: #6366f1;
    color: white;
    border: none;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.ai-send-btn:hover { background: #4f46e5; }
.ai-send-btn:disabled { background: #cbd5e1; cursor: not-allowed; }

/* لودینگ */
.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 5px;
}
.typing-dot {
    width: 6px;
    height: 6px;
    background: #cbd5e1;
    border-radius: 50%;
    animation: typing 1.4s infinite ease-in-out;
}
.typing-dot:nth-child(1) { animation-delay: 0s; }
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}