:root {
    --nav-height: 80px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.28);
    --shadow-md: 0 10px 28px rgba(0, 0, 0, 0.16);
    --font-sans: "Segoe UI", Tahoma, sans-serif;
}

@font-face {
    font-family: "Vazirmatn";
    src: url("../assets/fonts/Vazirmatn-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Vazirmatn";
    src: url("../assets/fonts/Vazirmatn-Medium.ttf") format("truetype");
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Vazirmatn";
    src: url("../assets/fonts/Vazirmatn-SemiBold.ttf") format("truetype");
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Vazirmatn";
    src: url("../assets/fonts/Vazirmatn-Bold.ttf") format("truetype");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

:root[data-theme="dark"] {
    --bg: #08101f;
    --bg-gradient: radial-gradient(circle at top left, rgba(47, 109, 246, 0.28), transparent 30%), radial-gradient(circle at 80% 18%, rgba(16, 185, 129, 0.16), transparent 24%), linear-gradient(180deg, #08101f 0%, #111827 100%);
    --surface: rgba(13, 20, 37, 0.7);
    --surface-soft: rgba(255, 255, 255, 0.04);
    --border: rgba(148, 163, 184, 0.16);
    --text: #edf2ff;
    --text-muted: #b6c2df;
    --accent: #67b3ff;
    --accent-strong: #2f7cf6;
    --accent-soft: rgba(103, 179, 255, 0.12);
    --orb-a: #2454c6;
    --orb-b: #0f766e;
}

:root[data-theme="light"] {
    --bg: #f4f8ff;
    --bg-gradient: radial-gradient(circle at top left, rgba(47, 124, 246, 0.14), transparent 30%), radial-gradient(circle at 82% 18%, rgba(16, 185, 129, 0.12), transparent 24%), linear-gradient(180deg, #f7fbff 0%, #eef4ff 100%);
    --surface: rgba(255, 255, 255, 0.8);
    --surface-soft: rgba(20, 35, 61, 0.04);
    --border: rgba(20, 35, 61, 0.12);
    --text: #162033;
    --text-muted: #526079;
    --accent: #2267d5;
    --accent-strong: #184fb2;
    --accent-soft: rgba(34, 103, 213, 0.1);
    --orb-a: #7fb2ff;
    --orb-b: #79dbc5;
}

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

html {
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: var(--bg-gradient);
    color: var(--text);
    overflow-x: hidden;
    padding-bottom: calc(var(--nav-height) + 44px);
    font-family: var(--font-sans);
}

body.rtl {
    font-family: "Vazirmatn", Tahoma, sans-serif;
}

a {
    color: inherit;
}

h1, h2, h3 {
    color: var(--text);
    font-weight: 700;
}

p, li, span {
    color: var(--text-muted);
    line-height: 1.75;
}

.bg-orb {
    position: fixed;
    border-radius: 999px;
    filter: blur(110px);
    z-index: -1;
    opacity: 0.55;
}

.orb-1 {
    top: -120px;
    left: -120px;
    width: 380px;
    height: 380px;
    background: var(--orb-a);
}

.orb-2 {
    right: -140px;
    bottom: 18%;
    width: 420px;
    height: 420px;
    background: var(--orb-b);
}

.utility-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    max-width: 1500px;
    margin: 16px auto 0;
    padding: 0 20px;
}

.utility-group {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.utility-link,
.utility-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 14px;
    border-radius: 999px;
    border: 1px solid var(--border);
    background: var(--surface);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    color: var(--text);
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

.utility-button {
    cursor: pointer;
    font: inherit;
}

.utility-link.active {
    background: var(--accent-soft);
    color: var(--accent);
}

.main-content {
    max-width: 1500px;
    margin: 0 auto;
    padding: 20px 20px 0;
}

.glass-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.glass-subcard {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 16px;
    transition: transform 0.24s ease, background 0.24s ease;
}

.glass-subcard:hover {
    transform: translateY(-2px);
    background: color-mix(in srgb, var(--surface-soft) 88%, var(--accent-soft));
}

.tab-content {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.35s ease, transform 0.35s ease;
}

.tab-content.active-tab {
    opacity: 1;
    transform: translateY(0);
}

.hidden {
    display: none;
}

.hero {
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-soft), transparent 60%);
    pointer-events: none;
}

.profile-header {
    display: flex;
    align-items: flex-start;
    gap: 24px;
}

.hero-copy {
    position: relative;
    z-index: 1;
}

.profile-img {
    width: 220px;
    height: 220px;
    object-fit: cover;
    border-radius: 24px;
    border: 2px solid var(--border);
    padding: 4px;
    flex-shrink: 0;
}

.eyebrow {
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 0.78rem;
    margin-bottom: 0.75rem;
}

.name {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    margin-bottom: 0.25rem;
}

.subtitle {
    margin-top: 0.8rem;
    color: var(--accent);
    font-size: 1.18rem;
    font-weight: 500;
}

.hero-summary {
    margin-top: 1rem;
}

.hero-actions,
.quick-facts,
.skill-tags,
.project-links {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.project-links {
    margin-bottom: 12px;
}

.hero-actions,
.quick-facts {
    margin-top: 1.3rem;
}

.primary-btn,
.secondary-btn,
.btn-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 44px;
    padding: 0 18px;
    border-radius: 999px;
    text-decoration: none;
    font-weight: 600;
    transition: transform 0.24s ease, background 0.24s ease, color 0.24s ease;
}

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

.secondary-btn,
.btn-link {
    background: var(--surface-soft);
    border: 1px solid var(--border);
    color: var(--text);
}

.primary-btn:hover,
.secondary-btn:hover,
.btn-link:hover {
    transform: translateY(-2px);
}

.fact-pill,
.tag,
.project-badge {
    display: inline-flex;
    align-items: center;
    min-height: 38px;
    padding: 0 14px;
    border-radius: 999px;
    background: var(--accent-soft);
    border: 1px solid color-mix(in srgb, var(--accent) 24%, transparent);
    color: var(--text);
    font-size: 0.92rem;
}

.section-title,
.section-subtitle {
    color: var(--text);
    margin-bottom: 1.5rem;
}

.mb-4 {
    margin-bottom: 1rem;
}

.mb-6 {
    margin-bottom: 1.5rem;
}

.mt-6 {
    margin-top: 1.5rem;
}

.mt-8 {
    margin-top: 2rem;
}

.timeline {
    position: relative;
    padding-inline-start: 20px;
}

.timeline::before {
    content: "";
    position: absolute;
    inset-block: 0;
    inset-inline-start: 20px;
    width: 2px;
    background: var(--border);
}

.timeline-item {
    position: relative;
    padding-inline-start: 30px;
    margin-bottom: 24px;
}

.timeline-dot {
    position: absolute;
    inset-inline-start: -5px;
    top: 6px;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--accent);
    box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 60%, transparent);
}

.meta {
    margin: 4px 0 12px;
    color: var(--accent);
    font-size: 0.92rem;
}

.nested-list {
    padding-inline-start: 20px;
}

.nested-list li {
    margin-bottom: 8px;
}

.project-grid {
    display: grid;
    grid-template-columns: repeat(1, minmax(0, 1fr));
    gap: 20px;
}

.project-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.featured-project {
    border-color: color-mix(in srgb, var(--accent) 26%, var(--border));
}

.achievement-card {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.contact-grid,
.social-links-grid {
    display: flex;
    flex-direction: column;
    gap: 14px;
    max-width: 520px;
    margin: 0 auto;
}

.contact-wrap {
    text-align: center;
}

.contact-wrap .section-subtitle,
.contact-wrap .contact-icon {
    display: block;
    text-align: center;
    margin-inline: auto;
}

.contact-card,
.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
}

.contact-card i,
.social-btn i,
.contact-icon {
    color: var(--accent);
}

.contact-icon {
    font-size: 2.7rem;
}

.contact-intro {
    max-width: 48ch;
    margin-inline: auto;
}

.bottom-navbar {
    position: fixed;
    inset-inline: 0;
    bottom: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    justify-content: space-around;
    align-items: center;
    gap: 6px;
    max-width: 1120px;
    margin: 0 auto 20px;
    padding: 0 14px;
    height: var(--nav-height);
    border-radius: 24px;
    border: 1px solid var(--border);
    background: var(--surface);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    width: 100%;
    max-width: 138px;
    min-height: 58px;
    padding: 8px 12px;
    border-radius: 16px;
    text-decoration: none;
    color: var(--text-muted);
    transition: background 0.24s ease, color 0.24s ease, transform 0.24s ease;
}

.nav-btn:hover {
    color: var(--text);
    transform: translateY(-2px);
}

.nav-btn.active {
    color: var(--accent);
    background: var(--accent-soft);
}

.nav-btn i {
    font-size: 1.2rem;
}

.nav-btn span {
    font-size: 0.78rem;
    font-weight: 600;
}

body.rtl .profile-header,
body.rtl .project-head {
    direction: rtl;
}

.description, .desc {
    text-align: justify;
}

body.rtl .contact-wrap .section-subtitle,
body.rtl .contact-wrap .contact-icon,
body.rtl .contact-wrap .contact-intro {
    text-align: center;
}

body.rtl .utility-bar {
    direction: rtl;
}

body.rtl .timeline::before {
    inset-inline-start: 20px;
    inset-inline-end: auto;
}

body.rtl .timeline-item {
    padding-inline-start: 30px;
    padding-inline-end: 0;
}

body.rtl .timeline-dot {
    inset-inline-start: -5px;
    inset-inline-end: auto;
}

body.rtl .nested-list {
    padding-inline-start: 20px;
    padding-inline-end: 0;
}

body.rtl .timeline,
body.rtl .timeline-item,
body.rtl .timeline-content,
body.rtl .meta {
    text-align: right;
}

@media (min-width: 900px) {
    .project-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (min-width: 1400px) {
    .project-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (min-width: 900px) {
    .contact-grid,
    .social-links-grid {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        max-width: 760px;
    }
}

@media (max-width: 768px) {
    .utility-bar {
        padding: 0 16px;
    }

    .main-content {
        padding: 24px 16px 0;
    }

    .glass-card {
        padding: 24px;
    }

    .profile-header {
        flex-direction: column;
        align-items: center;
        text-align: start;

    }

    .hero-copy {
        text-align: center;
    }

    .hero-actions,
    .quick-facts {
        justify-content: center;
    }

    .profile-img {
        width: min(100%, 260px);
        height: min(100%, 260px);
    }

    .nav-btn span {
        display: none;
    }

    .nav-container {
        margin: 0 12px 14px;
        height: 64px;
        padding: 2.5rem 1rem;
    }

    body.rtl .hero-actions,
    body.rtl .quick-facts {
        justify-content: flex-start;
    }

    .timeline-dot {
        inset-inline-start: -9px;
    }

    body.rtl .timeline-dot {
        inset-inline-start: -9px;
    }
}