:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary: #7c3aed;
    --accent: #06b6d4;
    --dark: #0f172a;
    --dark-soft: #1e293b;
    --gray: #64748b;
    --gray-light: #94a3b8;
    --bg: #f8fafc;
    --bg-alt: #f1f5f9;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
    --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.05);
    --radius: 20px;
    --radius-sm: 12px;
    --radius-lg: 28px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 100px;
}

body {
    font-family: 'Vazirmatn', sans-serif;
    background: var(--bg);
    color: var(--dark);
    line-height: 1.7;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    background-image: radial-gradient(circle, #cbd5e1 1px, transparent 1px);
    background-size: 40px 40px;
    opacity: 0.25;
}

/* ========== HEADER ========== */
.header-wrapper {
    position: sticky;
    top: 16px;
    z-index: 1000;
    padding: 0 1rem;
    margin: 0 auto;
    max-width: 1250px;
}

.modern-header {
    width: 100%;
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 1.6rem 0.5rem 1rem;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
}

.modern-header::before {
    content: '';
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    width: 5px;
    background: linear-gradient(180deg, var(--primary), var(--secondary), var(--accent));
    border-radius: 0 28px 28px 0;
    transition: width var(--transition);
}

.modern-header.scrolled::before {
    width: 7px;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
    z-index: 2;
    text-decoration: none;
}

.logo-icon {
    width: 46px;
    height: 46px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 20px;
    font-weight: 900;
    box-shadow: 0 8px 20px rgba(37, 99, 235, 0.35);
    transition: all var(--transition);
    flex-shrink: 0;
}

.logo-icon:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 14px 28px rgba(37, 99, 235, 0.45);
}

.brand-info {
    display: flex;
    flex-direction: column;
    gap: 1px;
}
.brand-name {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--dark);
    letter-spacing: -0.5px;
    line-height: 1.3;
}
.brand-domain {
    font-size: 0.7rem;
    font-weight: 500;
    color: var(--primary);
    letter-spacing: 0.5px;
    opacity: 0.85;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.3rem;
    z-index: 2;
    list-style: none;
}

.nav-link {
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--gray);
    padding: 0.55rem 1rem;
    border-radius: 30px;
    transition: all var(--transition);
    white-space: nowrap;
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

.nav-link:hover {
    color: var(--primary);
    background: rgba(37, 99, 235, 0.06);
    transform: translateY(-1px);
}

.nav-link.cta-btn {
    background: linear-gradient(135deg, var(--dark), var(--dark-soft));
    color: white !important;
    font-weight: 600;
    padding: 0.55rem 1.4rem;
    box-shadow: 0 6px 18px rgba(15, 23, 42, 0.25);
    margin-right: 0.4rem;
}
.nav-link.cta-btn:hover {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    box-shadow: 0 10px 24px rgba(37, 99, 235, 0.35);
    transform: translateY(-2px);
    color: white !important;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 10;
    padding: 8px;
    background: none;
    border: none;
}
.hamburger span {
    width: 26px;
    height: 3px;
    background: var(--dark);
    border-radius: 3px;
    transition: all var(--transition);
    display: block;
}
.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}
.hamburger.active span:nth-child(2) {
    opacity: 0;
}
.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}

/* ========== HERO ========== */
.hero {
    max-width: 1250px;
    margin: 1.5rem auto 3rem;
    padding: 2rem 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    min-height: 500px;
}

.hero-content {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}
.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary);
    padding: 0.4rem 1rem;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    width: fit-content;
    border: 1px solid rgba(37, 99, 235, 0.15);
}
.hero-badge .dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(34, 197, 94, 0);
    }
}

.hero h1 {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1.3;
    color: var(--dark);
}
.hero h1 .highlight {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-desc {
    font-size: 1.1rem;
    color: var(--gray);
    line-height: 1.9;
    max-width: 500px;
}
.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}
.btn {
    padding: 0.75rem 1.8rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    font-family: inherit;
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.35);
}
.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(37, 99, 235, 0.5);
}
.btn-outline {
    background: transparent;
    color: var(--dark);
    border: 2px solid #e2e8f0;
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(37, 99, 235, 0.03);
    transform: translateY(-2px);
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}
.hero-card {
    width: 320px;
    height: 380px;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.08);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    position: relative;
}
.hero-card .avatar-placeholder {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: linear-gradient(135deg, #e0e7ff, #c7d2fe);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary);
}
.hero-card .code-brackets {
    font-size: 3.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -3px;
}
.floating-tag {
    position: absolute;
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
    animation: float 4s ease-in-out infinite;
}
.floating-tag:nth-child(2) {
    top: 15%;
    left: -20px;
    animation-delay: 0s;
}
.floating-tag:nth-child(3) {
    bottom: 20%;
    right: -30px;
    animation-delay: 1.5s;
}
.floating-tag:nth-child(4) {
    top: 30%;
    right: -40px;
    animation-delay: 3s;
}
@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-14px);
    }
}

/* ========== SECTIONS GENERAL ========== */
section {
    max-width: 1250px;
    margin: 0 auto;
    padding: 3rem 1.5rem;
}
.section-header {
    text-align: center;
    margin-bottom: 3rem;
}
.section-tag {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary);
    background: rgba(37, 99, 235, 0.07);
    padding: 0.3rem 1rem;
    border-radius: 20px;
    letter-spacing: 0.5px;
    margin-bottom: 0.8rem;
}
.section-title {
    font-size: 2.2rem;
    font-weight: 900;
    color: var(--dark);
    margin-bottom: 0.5rem;
}
.section-subtitle {
    color: var(--gray);
    font-size: 1rem;
    max-width: 550px;
    margin: 0 auto;
}

/* ========== ABOUT ========== */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    gap: 3rem;
    align-items: center;
}
.about-visual {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    padding: 2rem;
    text-align: center;
    box-shadow: var(--card-shadow);
}
.about-visual .large-avatar {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, #dbeafe, #ede9fe);
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
}
.about-visual .uni-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: #fef3c7;
    color: #92400e;
    padding: 0.4rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-top: 0.5rem;
}
.about-text h3 {
    font-size: 1.6rem;
    font-weight: 800;
    margin-bottom: 1rem;
}
.about-text p {
    color: var(--gray);
    margin-bottom: 1.2rem;
    line-height: 2;
}
.stats-row {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}
.stat-item {
    text-align: center;
}
.stat-number {
    font-size: 2.2rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.stat-label {
    font-size: 0.85rem;
    color: var(--gray-light);
    font-weight: 500;
}

/* ========== SERVICES ========== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.service-card {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem 1.5rem;
    transition: all var(--transition);
    cursor: default;
    box-shadow: var(--card-shadow);
    position: relative;
    overflow: hidden;
}
.service-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: rgba(37, 99, 235, 0.3);
}
.service-card::after {
    content: '';
    position: absolute;
    top: -40px;
    left: -40px;
    width: 80px;
    height: 80px;
    background: rgba(37, 99, 235, 0.06);
    border-radius: 50%;
    transition: all 0.5s ease;
}
.service-card:hover::after {
    width: 200px;
    height: 200px;
    top: -100px;
    left: -100px;
}
.service-icon {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    display: block;
    position: relative;
    z-index: 1;
}
.service-card h4 {
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}
.service-card p {
    color: var(--gray);
    font-size: 0.9rem;
    position: relative;
    z-index: 1;
}

/* ========== PORTFOLIO ========== */
.portfolio-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 1.8rem;
}
.portfolio-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
    border: 1px solid #f1f5f9;
    cursor: pointer;
}
.portfolio-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
}
.portfolio-thumb {
    height: 200px;
    background: linear-gradient(135deg, #e2e8f0, #f1f5f9);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #94a3b8;
    position: relative;
}
.portfolio-thumb .project-logo {
    font-size: 4rem;
    opacity: 0.6;
}
.portfolio-info {
    padding: 1.5rem;
}
.portfolio-info h4 {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.3rem;
}
.portfolio-info .tech-tags {
    display: flex;
    gap: 0.4rem;
    flex-wrap: wrap;
    margin-top: 0.5rem;
}
.tech-tag {
    font-size: 0.7rem;
    background: #f1f5f9;
    color: var(--gray);
    padding: 0.2rem 0.7rem;
    border-radius: 12px;
    font-weight: 500;
}

/* ========== SKILLS ========== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.2rem;
    text-align: center;
}
.skill-item {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    padding: 1.5rem 1rem;
    transition: all var(--transition);
    box-shadow: var(--card-shadow);
}
.skill-item:hover {
    transform: translateY(-4px);
    border-color: rgba(37, 99, 235, 0.3);
}
.skill-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: 0.5rem;
}
.skill-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--dark);
}

/* ========== CONTACT ========== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 2.5rem;
    align-items: start;
}
.contact-info-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
}
.contact-info-card h3 {
    font-weight: 800;
    font-size: 1.4rem;
    margin-bottom: 1rem;
}
.contact-item {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
    color: var(--gray);
}
.contact-item .c-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(37, 99, 235, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
    flex-shrink: 0;
}
.contact-form {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--card-shadow);
    border: 1px solid #f1f5f9;
}
.form-group {
    margin-bottom: 1.2rem;
}
.form-group label {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.4rem;
    color: var(--dark-soft);
}
.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: 2px solid #e2e8f0;
    font-family: inherit;
    font-size: 0.95rem;
    transition: all var(--transition);
    background: #f8fafc;
    color: var(--dark);
    resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.08);
    background: white;
}
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.submit-btn {
    width: 100%;
    padding: 0.9rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 30px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition);
    font-family: inherit;
    box-shadow: 0 8px 24px rgba(37, 99, 235, 0.3);
}
.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 14px 32px rgba(37, 99, 235, 0.45);
}

/* ========== FOOTER ========== */
.site-footer {
    background: var(--dark);
    color: #cbd5e1;
    text-align: center;
    padding: 2rem 1.5rem;
    margin-top: 3rem;
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}
.site-footer .footer-brand {
    font-size: 1.5rem;
    font-weight: 900;
    color: white;
    margin-bottom: 0.3rem;
}
.site-footer .footer-domain {
    color: var(--accent);
    font-weight: 500;
    margin-bottom: 0.8rem;
}
.site-footer .social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin: 1rem 0;
    flex-wrap: wrap;
}
.site-footer .social-links a {
    color: #94a3b8;
    text-decoration: none;
    transition: color var(--transition);
    font-weight: 500;
    font-size: 0.9rem;
}
.site-footer .social-links a:hover {
    color: white;
}
.site-footer .copy {
    font-size: 0.8rem;
    color: #64748b;
    margin-top: 1rem;
}

/* ========== RESPONSIVE ========== */
@media (max-width: 950px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        min-height: auto;
    }
    .hero-content {
        align-items: center;
    }
    .hero-desc {
        max-width: 100%;
    }
    .hero-buttons {
        justify-content: center;
    }
    .hero-card {
        width: 260px;
        height: 320px;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
    .portfolio-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 2.2rem;
    }
    .section-title {
        font-size: 1.7rem;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 75%;
        max-width: 320px;
        height: 100vh;
        background: white;
        flex-direction: column;
        padding: 5rem 2rem 2rem;
        gap: 0.8rem;
        box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
        transition: right var(--transition);
        border-radius: 0 0 0 20px;
    }
    .nav-menu.active {
        right: 0;
    }
    .nav-link {
        font-size: 1rem;
        padding: 0.7rem 1.2rem;
        width: 100%;
        text-align: center;
    }
    .modern-header {
        padding: 0.5rem 1.2rem;
    }
    .brand-name {
        font-size: 1.1rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .stats-row {
        justify-content: center;
        gap: 1.5rem;
    }
    .floating-tag:nth-child(2) {
        left: 5px;
    }
    .floating-tag:nth-child(3) {
        right: 5px;
    }
    .floating-tag:nth-child(4) {
        right: 10px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }
    .hero-card {
        width: 220px;
        height: 280px;
    }
    .section-title {
        font-size: 1.4rem;
    }
    .services-grid {
        grid-template-columns: 1fr;
    }
    .skills-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.8rem;
    }
    .skill-icon {
        font-size: 1.8rem;
    }
    .skill-name {
        font-size: 0.75rem;
    }
    .btn {
        padding: 0.65rem 1.2rem;
        font-size: 0.85rem;
    }
}

.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 998;
    transition: opacity var(--transition);
}
.overlay.active {
    display: block;
}
.logo-icon img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}