/* ================= متغیرها ================= */
:root {
    --primary: #00b4d8;
    --primary-dark: #0096c7;
    --primary-light: #90e0ef;
    --dark: #03045e;
    --dark-2: #023e8a;
    --text: #1e293b;
    --text-light: #64748b;
    --bg: #ffffff;
    --bg-light: #f0f9ff;
    --border: #e2e8f0;
    --radius: 12px;
    --radius-lg: 20px;
    --shadow: 0 4px 20px rgba(0, 180, 216, 0.08);
    --shadow-hover: 0 12px 30px rgba(0, 180, 216, 0.18);
    --transition: 0.3s ease;
}

/* ================= پایه ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Vazirmatn', Tahoma, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.8;
    direction: rtl;
    font-size: 16px;
}

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ================= دکمه‌ها ================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    white-space: nowrap;
}

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

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

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

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

.btn-sm {
    padding: 8px 20px;
    font-size: 14px;
}

.btn-block {
    width: 100%;
}

/* ================= هدر ================= */
.header {
    position: sticky;
    top: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 75px;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 800;
    font-size: 18px;
    color: var(--dark);
}

.logo-img {
    height: 45px;
    width: auto;
}

.nav-list {
    display: flex;
    gap: 28px;
}

.nav-list a {
    font-weight: 500;
    color: var(--text);
    position: relative;
    padding: 6px 0;
}

.nav-list a:hover,
.nav-list a.active {
    color: var(--primary);
}

.nav-list a.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    right: 0;
    left: 0;
    height: 2px;
    background: var(--primary);
    border-radius: 2px;
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--dark);
    cursor: pointer;
}

/* ================= هیرو ================= */
.hero {
    background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
    padding: 80px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 180, 216, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.hero-inner {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: rgba(0, 180, 216, 0.12);
    color: var(--primary-dark);
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: var(--dark);
    line-height: 1.3;
    margin-bottom: 12px;
}

.hero-title .highlight {
    color: var(--primary);
}

.hero-slogan {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 20px;
}

.hero-desc {
    font-size: 17px;
    color: var(--text-light);
    margin-bottom: 32px;
    max-width: 540px;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.hero-visual {
    display: flex;
    flex-direction: column;
    gap: 20px;
    align-items: center;
}

.hero-card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 24px 40px;
    display: flex;
    align-items: center;
    gap: 16px;
    box-shadow: var(--shadow);
    font-weight: 700;
    font-size: 18px;
    color: var(--dark);
    width: 100%;
    max-width: 280px;
    transition: var(--transition);
}

.hero-card:nth-child(1) { transform: translateX(-30px); }
.hero-card:nth-child(2) { transform: translateX(0); }
.hero-card:nth-child(3) { transform: translateX(-30px); }

.hero-card:hover {
    transform: translateX(0) scale(1.03);
    box-shadow: var(--shadow-hover);
}

.hero-card i {
    font-size: 28px;
    color: var(--primary);
}

/* ================= آمار ================= */
.stats {
    background: var(--dark);
    padding: 50px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item {
    color: #fff;
}

.stat-number {
    display: block;
    font-size: 42px;
    font-weight: 800;
    color: var(--primary-light);
    line-height: 1.2;
}

.stat-label {
    font-size: 15px;
    opacity: 0.85;
}

/* ================= بخش‌ها ================= */
.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 34px;
    font-weight: 800;
    color: var(--dark);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 17px;
    color: var(--text-light);
}

.section-footer {
    text-align: center;
    margin-top: 50px;
}

/* ================= حوزه‌ها ================= */
.categories {
    background: var(--bg);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.category-card {
    background: var(--bg-light);
    border-radius: var(--radius);
    padding: 36px 20px;
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
}

.category-card:hover {
    background: #fff;
    border-color: var(--primary);
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.category-card i {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 16px;
}

.category-card h3 {
    font-size: 18px;
    font-weight: 700;
    color: var(--dark);
}

/* ================= دوره‌ها ================= */
.courses-section {
    background: var(--bg-light);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 26px;
}

.course-card {
    background: #fff;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-hover);
}

.course-img {
    height: 160px;
    background: linear-gradient(135deg, var(--primary) 0%, var(--dark-2) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
}

.course-img i {
    font-size: 56px;
    color: #fff;
}

.course-body {
    padding: 22px;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.course-cat {
    display: inline-block;
    background: rgba(0, 180, 216, 0.12);
    color: var(--primary-dark);
    padding: 4px 12px;
    border-radius: 50px;
    font-size: 12px;
    font-weight: 600;
    margin-bottom: 12px;
    align-self: flex-start;
}

.course-title {
    font-size: 19px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 10px;
}

.course-desc {
    font-size: 14px;
    color: var(--text-light);
    margin-bottom: 16px;
    flex: 1;
}

.course-meta {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 16px;
}

.course-meta i {
    color: var(--primary);
    margin-left: 4px;
}

/* ================= چرا ما ================= */
.why-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.why-card {
    text-align: center;
    padding: 32px 20px;
    border-radius: var(--radius);
    background: var(--bg);
    border: 1px solid var(--border);
    transition: var(--transition);
}

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

.why-card i {
    font-size: 36px;
    color: var(--primary);
    margin-bottom: 16px;
}

.why-card h3 {
    font-size: 17px;
    font-weight: 700;
    color: var(--dark);
    margin-bottom: 8px;
}

.why-card p {
    font-size: 14px;
    color: var(--text-light);
}

/* ================= فرم مشاوره ================= */
.consult {
    background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
    color: #fff;
}

.consult-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.consult-text h2 {
    font-size: 32px;
    font-weight: 800;
    margin-bottom: 16px;
    color: #fff;
}

.consult-text p {
    font-size: 16px;
    opacity: 0.9;
    margin-bottom: 24px;
}

.consult-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 15px;
}

.consult-features i {
    color: var(--primary-light);
}

.consult-form {
    background: #fff;
    padding: 32px;
    border-radius: var(--radius-lg);
    color: var(--text);
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 8px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 15px;
    background: var(--bg-light);
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: #fff;
    box-shadow: 0 0 0 4px rgba(0, 180, 216, 0.1);
}

.form-note {
    font-size: 12px;
    color: var(--text-light);
    text-align: center;
    margin-top: 12px;
}

/* ================= فوتر ================= */
.footer {
    background: #010b2b;
    color: #cbd5e1;
    padding: 60px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-col h3,
.footer-col h4 {
    color: #fff;
    margin-bottom: 18px;
    font-size: 17px;
}

.footer-col p {
    font-size: 14px;
    line-height: 1.9;
    margin-bottom: 20px;
}

.footer-col ul li {
    margin-bottom: 10px;
}

.footer-col ul a:hover {
    color: var(--primary-light);
}

.contact-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.contact-list i {
    color: var(--primary);
}

.social {
    display: flex;
    gap: 12px;
}

.social a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    color: #fff;
}

.social a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px 0;
    text-align: center;
    font-size: 13px;
    color: #94a3b8;
}

/* ================= واتساپ شناور ================= */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    left: 24px;
    width: 56px;
    height: 56px;
    background: #25d366;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    box-shadow: 0 6px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    animation: pulse 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5); }
    70% { box-shadow: 0 0 0 16px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ================= ریسپانسیو ================= */
@media (max-width: 992px) {
    .hero-inner,
    .consult-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-visual {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .hero-card {
        width: auto;
        transform: none !important;
    }
    
    .courses-grid,
    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .why-grid,
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav {
        display: none;
    }
    
    .nav.active {
        display: block;
        position: absolute;
        top: 75px;
        right: 0;
        left: 0;
        background: #fff;
        padding: 20px;
        box-shadow: var(--shadow);
    }
    
    .nav.active .nav-list {
        flex-direction: column;
        gap: 16px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .header-cta {
        display: none;
    }
    
    .hero-title {
        font-size: 34px;
    }
    
    .hero-slogan {
        font-size: 20px;
    }
    
    .section-title {
        font-size: 26px;
    }
    
    .courses-grid,
    .categories-grid,
    .why-grid,
    .stats-grid,
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-number {
        font-size: 34px;
    }
}