/* ============================================
   پروژه: معاوضه خودرو با خانه
   طراحی: مدرن، حرفه‌ای، خاص
   تم: آبی نفتی + طلایی
   قابلیت: شب و روز (دارک مود/لایت مود)
   ============================================ */

/* --------------------------------------------
   متغیرهای CSS - تم روشن (پیش‌فرض)
--------------------------------------------- */
:root {
    /* رنگ‌های اصلی - تم روشن */
    --bg-primary: #f0f2f5;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-input: #f8f9fa;
    --bg-hero: #ffffff;
    --bg-sidebar: #f7f8fa;
    --bg-messages: #fafbfc;
    --bg-overlay: rgba(255, 255, 255, 0.95);

    --text-primary: #0d1b2a;
    --text-secondary: #212529;
    --text-muted: #6c757d;
    --text-light: #8c9aa8;
    --text-white: #ffffff;
    --text-dark: #0d1b2a;

    --border-color: #e8ecf1;
    --border-light: #dee2e6;
    --shadow-color: rgba(0, 0, 0, 0.06);
    --shadow-dark: rgba(0, 0, 0, 0.1);

    --primary: #0d2137;
    --primary-light: #1a365d;
    --primary-dark: #0a1628;
    --secondary: #c9a84c;
    --secondary-dark: #b8922e;
    --secondary-light: #d4b85a;
    --accent: #e8b931;
    --accent-glow: rgba(201, 168, 76, 0.3);

    --header-bg: #0d1b2a;
    --header-text: #ffffff;
    --footer-bg: #0d1b2a;

    --card-border: rgba(0, 0, 0, 0.02);
    --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.02);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-gold: 0 10px 40px rgba(201, 168, 76, 0.25);

    --radius-sm: 0.375rem;
    --radius: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-2xl: 2rem;
    --radius-full: 9999px;

    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);

    --font-sans: 'Segoe UI', 'Tahoma', 'Vazir', system-ui, -apple-system, sans-serif;

    --nav-font-size: 0.95rem;
    --nav-font-weight: 500;
    --btn-font-size: 0.9rem;
    --btn-font-weight: 700;
}

/* ============================================
   تم تاریک (دارک مود)
============================================= */
body.dark-mode {
    --bg-primary: #0a0e17;
    --bg-secondary: #0f1625;
    --bg-card: #141b2b;
    --bg-input: #1a2332;
    --bg-hero: #0d1b2a;
    --bg-sidebar: #0f1625;
    --bg-messages: #0a0e17;
    --bg-overlay: rgba(10, 14, 23, 0.98);

    --text-primary: #e8edf5;
    --text-secondary: #cfd8e6;
    --text-muted: #8c9aa8;
    --text-light: #6a7a8a;
    --text-white: #ffffff;
    --text-dark: #e8edf5;

    --border-color: #1e2a3a;
    --border-light: #2a3a4a;
    --shadow-color: rgba(0, 0, 0, 0.2);
    --shadow-dark: rgba(0, 0, 0, 0.3);

    --primary: #1a365d;
    --primary-light: #2a4a7a;
    --primary-dark: #0a1628;

    --header-bg: #060a12;
    --header-text: #e8edf5;
    --footer-bg: #060a12;

    --card-border: rgba(255, 255, 255, 0.03);
    --card-shadow: 0 2px 16px rgba(0, 0, 0, 0.15);

    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.1);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.15), 0 1px 2px -1px rgb(0 0 0 / 0.15);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.15), 0 2px 4px -2px rgb(0 0 0 / 0.15);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.15), 0 4px 6px -4px rgb(0 0 0 / 0.15);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.15), 0 8px 10px -6px rgb(0 0 0 / 0.15);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.3);
    --shadow-gold: 0 10px 40px rgba(201, 168, 76, 0.15);
}

/* --------------------------------------------
   ریست و تنظیمات پایه
--------------------------------------------- */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    min-height: 100vh;
    position: relative;
    transition: background 0.3s ease, color 0.3s ease;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(201, 168, 76, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(13, 33, 55, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
    transition: opacity 0.3s ease;
}

body.dark-mode::before {
    opacity: 0.2;
}

/* اسکرول بار */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--primary-light), var(--secondary-dark));
}

/* --------------------------------------------
   کلاس‌های کمکی
--------------------------------------------- */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
    position: relative;
    z-index: 1;
}

/* --------------------------------------------
   هدر ناوبری
--------------------------------------------- */
.header {
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 2px solid var(--secondary);
    animation: slideDown 0.5s ease;
    box-shadow: 0 4px 20px var(--shadow-dark);
    transition: background 0.3s ease, border-color 0.3s ease;
}

@keyframes slideDown {
    from { transform: translateY(-100%); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 2rem;
    max-width: 1400px;
    margin: auto;
}

.logo {
    font-size: 1.8rem;
    font-weight: 800;
    background: linear-gradient(135deg, #ffffff 0%, var(--secondary) 70%, var(--secondary-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    letter-spacing: -0.5px;
}

.logo span {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

/* ===== لینک‌های ناوبری ===== */
.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    font-weight: var(--nav-font-weight);
    font-size: var(--nav-font-size);
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
    letter-spacing: 0.3px;
    font-family: var(--font-sans);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0%;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-links a:hover {
    color: #ffffff;
}

.nav-links a.active {
    color: var(--secondary);
    font-weight: var(--nav-font-weight);
    font-size: var(--nav-font-size);
}

/* ===== دکمه‌ها ===== */
.btn {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: var(--text-dark);
    border: none;
    padding: 0.6rem 1.8rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: var(--btn-font-weight);
    font-size: var(--btn-font-size);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
    text-decoration: none;
    display: inline-block;
    line-height: 1.5;
    white-space: nowrap;
    font-family: var(--font-sans);
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-gold);
    background: linear-gradient(135deg, var(--secondary-light), var(--secondary));
}

.btn-outline {
    background: transparent;
    color: var(--text-white);
    border: 2px solid var(--secondary);
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
}

.btn-outline:hover {
    background: var(--secondary);
    color: var(--text-dark);
}

/* ===== دکمه تغییر تم ===== */
.theme-toggle {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: rgba(255, 255, 255, 0.8);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.theme-toggle:hover {
    background: rgba(255, 255, 255, 0.12);
    transform: scale(1.05);
}

body.dark-mode .theme-toggle {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.05);
}

body.dark-mode .theme-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
}

/* ===== دکمه‌های فرم ===== */
.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-white);
    border: none;
    border-radius: var(--radius-full);
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
    cursor: pointer;
    transition: var(--transition);
    margin-top: 1rem;
    letter-spacing: 0.5px;
    font-family: var(--font-sans);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.submit-btn-gold {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: var(--text-dark);
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
}

.submit-btn-gold:hover {
    box-shadow: var(--shadow-gold);
}

/* ===== دکمه‌های فیلتر ===== */
.btn-filter {
    padding: 0.5rem 1.5rem;
    background: var(--secondary);
    color: var(--text-white);
    border: none;
    border-radius: 10px;
    font-weight: var(--btn-font-weight);
    font-size: var(--btn-font-size);
    cursor: pointer;
    transition: 0.3s;
    font-family: var(--font-sans);
}

.btn-filter:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

.btn-reset {
    padding: 0.5rem 1rem;
    background: none;
    border: 2px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-light);
    font-size: var(--btn-font-size);
    font-weight: var(--btn-font-weight);
    cursor: pointer;
    transition: 0.3s;
    font-family: var(--font-sans);
}

.btn-reset:hover {
    border-color: var(--text-muted);
    color: var(--text-secondary);
}

/* ===== دکمه‌های انتخاب نوع آگهی ===== */
.type-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    background: transparent;
    border-radius: var(--radius-full);
    font-weight: var(--btn-font-weight);
    font-size: var(--btn-font-size);
    cursor: pointer;
    transition: var(--transition);
    color: var(--gray-600);
    font-family: var(--font-sans);
}

.type-btn.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

.type-btn:hover:not(.active) {
    background: var(--border-color);
    transform: scale(0.98);
}

/* ===== دکمه‌های چت ===== */
.chat-send-btn {
    padding: 0.6rem 1.5rem;
    background: var(--secondary);
    color: var(--text-white);
    border: none;
    border-radius: 12px;
    font-weight: var(--btn-font-weight);
    cursor: pointer;
    transition: 0.3s;
    font-size: var(--btn-font-size);
    font-family: var(--font-sans);
}

.chat-send-btn:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

/* ===== دکمه‌های CTA ===== */
.cta-btn {
    padding: 0.6rem 2rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: var(--btn-font-weight);
    transition: 0.3s;
    font-size: var(--btn-font-size);
    display: inline-block;
    font-family: var(--font-sans);
}

.cta-btn.primary {
    background: var(--secondary);
    color: var(--text-dark);
}

.cta-btn.primary:hover {
    background: var(--secondary-dark);
    transform: translateY(-2px);
}

.cta-btn.secondary {
    background: transparent;
    color: var(--text-white);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.cta-btn.secondary:hover {
    border-color: var(--text-white);
    transform: translateY(-2px);
}

/* --------------------------------------------
   کارت‌ها
--------------------------------------------- */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    border: 1px solid var(--card-border);
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--accent), var(--secondary));
    background-size: 200% 100%;
    transform: scaleX(0);
    transition: var(--transition);
}

.card:hover::before {
    transform: scaleX(1);
    animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
    border-color: var(--secondary);
}

.card-img {
    height: 220px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.card-img::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 60%, rgba(0, 0, 0, 0.3) 100%);
}

.card:hover .card-img {
    transform: scale(1.05);
}

.card-content {
    padding: 1.5rem;
    position: relative;
}

.card-title {
    font-size: 1.35rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.badge {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: var(--text-dark);
    padding: 0.3rem 1rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    display: inline-block;
    margin: 0.5rem 0;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

/* --------------------------------------------
   فرم‌ها
--------------------------------------------- */
.form-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    padding: 2.5rem;
    box-shadow: var(--shadow-2xl);
    animation: fadeInUp 0.6s ease;
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.9rem 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--bg-input);
    color: var(--text-secondary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px var(--accent-glow);
    transform: translateY(-2px);
    background: var(--bg-card);
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: block;
    font-size: 0.9rem;
}

.form-group label.required::after {
    content: ' *';
    color: #dc3545;
}

/* --------------------------------------------
   آپلود عکس
--------------------------------------------- */
.image-upload {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: var(--bg-input);
}

.image-upload:hover {
    border-color: var(--secondary);
    background: var(--bg-card);
    transform: translateY(-2px);
}

/* --------------------------------------------
   فوتر
--------------------------------------------- */
footer {
    background: var(--footer-bg);
    color: rgba(255, 255, 255, 0.8);
    text-align: center;
    padding: 2.5rem;
    margin-top: 4rem;
    position: relative;
    overflow: hidden;
    border-top: 3px solid var(--secondary);
    transition: background 0.3s ease;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(circle at 20% 50%, rgba(201, 168, 76, 0.05) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(201, 168, 76, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

footer .container {
    position: relative;
    z-index: 1;
}

/* --------------------------------------------
   انیمیشن‌ها
--------------------------------------------- */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes shine {
    to { background-position: 200% center; }
}

@keyframes goldPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(201, 168, 76, 0.2); }
    50% { box-shadow: 0 0 40px rgba(201, 168, 76, 0.4); }
}

.gradient-text {
    background: linear-gradient(135deg, var(--secondary), var(--accent), var(--secondary-light));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    background-size: 200% auto;
    animation: shine 3s linear infinite;
}

.gold-border {
    border: 2px solid var(--secondary);
}

.gold-shadow {
    animation: goldPulse 2s infinite;
}

/* --------------------------------------------
   صفحه تماس با ما
--------------------------------------------- */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

.contact-info .info-item {
    transition: var(--transition);
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-info .info-item:hover {
    transform: translateX(-10px);
    border-color: var(--secondary);
    box-shadow: var(--shadow-gold);
}

.info-icon {
    font-size: 2rem;
    margin-left: 1rem;
}

/* --------------------------------------------
   هشدارها و پیام‌ها
--------------------------------------------- */
.alert {
    padding: 1rem;
    border-radius: var(--radius-lg);
    margin-bottom: 1rem;
    animation: slideInRight 0.5s ease;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.alert-success {
    background: linear-gradient(135deg, #d4edda, #c3e6cb);
    color: #155724;
    border-right: 4px solid #2d8f5c;
}

.alert-error {
    background: linear-gradient(135deg, #f8d7da, #f5c6cb);
    color: #721c24;
    border-right: 4px solid #dc3545;
}

/* --------------------------------------------
   هیرو سکشن
--------------------------------------------- */
.hero {
    background: var(--bg-hero);
    border-radius: var(--radius-xl);
    padding: 3rem;
    text-align: center;
    box-shadow: var(--shadow-xl);
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.hero h1 {
    font-size: 2.8rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-weight: 800;
}

.hero h1 span {
    color: var(--secondary);
}

/* --------------------------------------------
   جعبه جستجو
--------------------------------------------- */
.search-box {
    background: var(--bg-input);
    border-radius: var(--radius-full);
    padding: 0.8rem 1.5rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.search-box input,
.search-box select {
    padding: 0.8rem 1.2rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 1rem;
    min-width: 200px;
    transition: var(--transition);
    background: var(--bg-card);
    color: var(--text-secondary);
}

.search-box input:focus,
.search-box select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

/* --------------------------------------------
   گرید
--------------------------------------------- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

/* --------------------------------------------
   اسکرول به بالا
--------------------------------------------- */
.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
    font-size: 1.5rem;
    border: 2px solid var(--secondary);
}

.scroll-top.show {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-gold);
}

/* --------------------------------------------
   استایل‌های اختصاصی
--------------------------------------------- */
.section-title {
    font-size: 2rem;
    color: var(--text-primary);
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--secondary);
}

.stat-label {
    font-size: 0.9rem;
    color: var(--text-light);
}

/* ===== استایل‌های چت ===== */
.chat-wrapper {
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-2xl);
    border: 1px solid var(--border-color);
    transition: background 0.3s ease, border-color 0.3s ease;
}

.chat-sidebar {
    background: var(--bg-sidebar);
    border-left: 1px solid var(--border-color);
}

.chat-list-item.active {
    background: var(--bg-card);
    border-right: 3px solid var(--secondary);
    box-shadow: var(--shadow-gold);
}

.chat-input-area button {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-white);
}

.chat-input-area button:hover {
    box-shadow: var(--shadow-gold);
    background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.message.sent {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--text-white);
}

.message.received {
    background: var(--bg-input);
    color: var(--text-secondary);
}

.chat-security-badge {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: var(--text-dark);
}

/* ===== استایل‌های صفحه تیم ===== */
.team-card .avatar-wrapper .ring {
    border-color: var(--border-color);
}

.team-card .member-skills .skill {
    background: var(--bg-input);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.team-card .member-skills .skill:hover {
    background: var(--bg-card);
    border-color: var(--secondary);
}

.team-card .member-social a {
    border-color: var(--border-color);
    color: var(--text-light);
}

.team-card .member-social a:hover {
    border-color: var(--secondary);
    color: var(--text-primary);
}

/* ============================================================
   واکنش‌گرایی (Responsive)
============================================================= */
@media (max-width: 1024px) {
    .contact-wrapper {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .nav {
        flex-direction: column;
        gap: 0.8rem;
        padding: 0.6rem 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.6rem;
    }

    .nav-links a {
        font-size: 0.85rem;
    }

    .form-card {
        padding: 1.5rem;
    }

    .ad-type-selector {
        flex-direction: column;
        border-radius: var(--radius-lg);
    }

    .type-btn {
        padding: 0.8rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero {
        padding: 1.5rem;
    }

    .search-box {
        flex-direction: column;
        border-radius: var(--radius-lg);
    }

    .search-box input,
    .search-box select,
    .search-box button {
        width: 100%;
    }

    .card:hover {
        transform: translateY(-4px);
    }

    .logo {
        font-size: 1.5rem;
    }

    .btn {
        padding: 0.5rem 1.2rem;
        font-size: var(--btn-font-size);
    }

    .theme-toggle {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.3rem;
    }

    .nav-links a {
        font-size: 0.8rem;
    }

    .card-title {
        font-size: 1.1rem;
    }

    .hero h1 {
        font-size: 1.6rem;
    }

    .form-card {
        padding: 1rem;
    }

    .btn {
        padding: 0.4rem 1rem;
        font-size: calc(var(--btn-font-size) - 0.05rem);
    }

    .theme-toggle {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }

    .grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}