/* ==========================================================================
   Personal Academic Website - Persian Princess Palette
   Inspired by Persian miniature art and pre-Islamic Persian aesthetics
   ========================================================================== */

/* CSS Custom Properties */
:root {
    /* Persian Princess Color Palette */
    --color-brown-gray: #2f261a;
    --color-terra-cotta: #6d1b16;
    --color-orange-red: #ae0d13;
    --color-bright-orange: #cc3f18;
    --color-apricot: #ea8e77;
    --color-apricot-light: #f4b8a8;
    --color-celadon: #4c7257;
    --color-celadon-light: #6a9474;

    /* Derived colors */
    --color-cream: #faf6f2;
    --color-cream-warm: #f7f0e8;
    --color-text: #2f261a;
    --color-text-light: #5a4d3d;
    --color-white: #FFFFFF;

    /* Semantic mappings */
    --color-primary: var(--color-terra-cotta);
    --color-secondary: var(--color-celadon);
    --color-accent: var(--color-orange-red);
    --color-highlight: var(--color-bright-orange);

    /* Typography - Roboto */
    --font-heading: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --nav-height: 70px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-cream);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 500;
    line-height: 1.3;
    color: var(--color-brown-gray);
}

h1 {
    font-size: 3.5rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

/* Two-color name styling */
.name-first {
    color: var(--color-terra-cotta);
}

.name-last {
    color: var(--color-terra-cotta);
}

/* Inline pronunciation */
.pronunciation {
    color: var(--color-text-light);
    font-size: 0.95em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 500;
}

h3 {
    font-size: 1.5rem;
    font-weight: 500;
}

h4 {
    font-size: 1.25rem;
    font-weight: 500;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--color-terra-cotta);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-orange-red);
}

strong {
    font-weight: 500;
}

em {
    font-style: italic;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xl) 0;
}

.section-alt {
    background-color: var(--color-cream-warm);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
}

/* Persian-inspired decorative divider */
.section-title::before {
    content: '';
    display: block;
    width: 120px;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--color-apricot), var(--color-terra-cotta), var(--color-apricot), transparent);
    margin: 0 auto var(--spacing-xs);
    position: absolute;
    bottom: -1.5rem;
    left: 50%;
    transform: translateX(-50%);
}

.section-title {
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.section-intro {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-text-light);
    font-size: 1.1rem;
}

/* ==========================================================================
   Navigation
   ========================================================================== */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background-color: #ffffff;
    backdrop-filter: blur(12px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 0, 0, 0.07);
    box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
    transition: all var(--transition-medium);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: #002A5C;
    letter-spacing: 0.08em;
    transition: color var(--transition-medium);
}

.nav-logo:hover {
    color: var(--color-terra-cotta);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.25rem;
    align-items: center;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: #444;
    padding: 6px 12px;
    border-radius: 20px;
    position: relative;
    transition: background 0.2s, color 0.2s;
}

.nav-link::after {
    display: none;
}

.nav-link:hover {
    background: rgba(0, 42, 92, 0.07);
    color: #002A5C;
}

.nav-link:hover::after {
    width: 0;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-brown-gray);
    transition: all var(--transition-fast);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--nav-height);
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-warm) 100%);
}

/* Persian Miniature Theme - Simple Background */
.hero-persian {
    position: relative;
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-warm) 100%);
}

/* Page-specific Persian backgrounds */
.page-womenintech {
    background:
        linear-gradient(180deg,
            rgba(250, 246, 242, 0.9) 0%,
            rgba(247, 240, 232, 0.85) 60%,
            rgba(234, 142, 119, 0.3) 100%),
        url('../images/persian-1.png') center/cover no-repeat;
}

.page-techrun {
    background:
        linear-gradient(180deg,
            rgba(250, 246, 242, 0.88) 0%,
            rgba(247, 240, 232, 0.82) 50%,
            rgba(109, 27, 22, 0.2) 100%),
        url('../images/persian-3.png') center/cover no-repeat;
}

.page-funfacts {
    background:
        linear-gradient(180deg,
            rgba(250, 246, 242, 0.88) 0%,
            rgba(247, 240, 232, 0.8) 50%,
            rgba(204, 63, 24, 0.2) 100%),
        url('../images/persian-4.png') center/cover no-repeat;
}


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

/* Persian Music Player */
.music-player {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 100;
}

.music-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--color-white);
    border: 1px solid var(--color-apricot);
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-terra-cotta);
    box-shadow: 0 4px 20px rgba(109, 27, 22, 0.15);
    transition: all var(--transition-medium);
}

.music-toggle:hover {
    background: var(--color-terra-cotta);
    color: var(--color-white);
    transform: translateY(-2px);
}

.music-toggle.playing {
    background: var(--color-terra-cotta);
    color: var(--color-white);
}

.music-toggle.playing .music-icon {
    animation: pulse 1s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

.music-text {
    display: inline;
}

@media (max-width: 768px) {
    .music-player {
        bottom: 1rem;
        right: 1rem;
    }

    .music-text {
        display: none;
    }

    .music-toggle {
        padding: 0.75rem;
        border-radius: 50%;
    }
}

.hero-content {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.hero-image {
    display: flex;
    justify-content: center;
}

.profile-photo {
    width: 280px;
    height: 280px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--color-white);
    box-shadow: 0 20px 60px rgba(30, 58, 95, 0.15);
}

.profile-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-apricot-light) 0%, var(--color-cream-warm) 100%);
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: 1.2rem;
}

.hero-text {
    max-width: 600px;
}

.greeting {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-terra-cotta);
    margin-bottom: var(--spacing-xs);
}

.hero-text h1 {
    margin-bottom: var(--spacing-xs);
}

.title {
    font-size: 1.25rem;
    color: var(--color-brown-gray);
    font-weight: 400;
    margin-bottom: var(--spacing-xs);
}

.tagline {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.bio {
    font-size: 1.05rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-white);
    color: var(--color-brown-gray);
    transition: all var(--transition-fast);
    box-shadow: 0 2px 8px rgba(30, 58, 95, 0.1);
}

.social-link:hover {
    background-color: var(--color-brown-gray);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 58, 95, 0.2);
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   Research Section
   ========================================================================== */

.research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.research-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(30, 58, 95, 0.08);
    transition: all var(--transition-medium);
    border-left: 3px solid transparent;
}

.research-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(30, 58, 95, 0.12);
    border-left-color: var(--color-terra-cotta);
}

.research-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-brown-gray);
}

.research-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

.current-projects {
    max-width: 800px;
    margin: 0 auto;
}

.current-projects h3 {
    text-align: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-terra-cotta);
}

.project-highlight {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    border: 1px solid rgba(114, 47, 55, 0.2);
}

.project-highlight h4 {
    color: var(--color-brown-gray);
    margin-bottom: var(--spacing-sm);
}

.project-highlight p {
    margin-bottom: 0;
    color: var(--color-text-light);
}

/* ==========================================================================
   Publications Section
   ========================================================================== */

.publications-list {
    max-width: 900px;
    margin: 0 auto;
}

.publication {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(114, 47, 55, 0.1);
}

.publication:last-of-type {
    border-bottom: none;
}

.pub-row {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.pub-year {
    flex: 0 0 60px;
    font-size: 1.4rem;
    font-weight: 300;
    color: rgba(114, 47, 55, 0.2);
    text-align: right;
    padding-top: 2px;
    min-height: 1em;
}

.pub-thumb-wrap {
    flex: 0 0 130px;
    width: 130px;
    cursor: zoom-in;
    border-radius: 6px;
    overflow: hidden;
    border: 1px solid rgba(114, 47, 55, 0.15);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
}

.pub-thumb-wrap:hover {
    transform: scale(1.03);
    box-shadow: 0 4px 16px rgba(30, 58, 95, 0.15);
}

.pub-thumb-wrap::after {
    content: '🔍';
    position: absolute;
    bottom: 4px;
    right: 4px;
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.pub-thumb-wrap:hover::after {
    opacity: 1;
}

.pub-thumb {
    width: 100%;
    height: 90px;
    object-fit: cover;
    display: block;
}

.pub-thumb-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 90px;
    background-color: var(--color-cream-warm);
    font-size: 2rem;
    cursor: default;
}

.pub-thumb-placeholder:hover {
    transform: none;
    box-shadow: none;
}

.pub-body {
    flex: 1;
    min-width: 0;
}

.pub-title {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--color-brown-gray);
    margin-bottom: 4px;
    line-height: 1.4;
}

.pub-authors {
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-bottom: 2px;
}

.pub-venue-line {
    font-size: 0.85rem;
    color: var(--color-terra-cotta);
    margin-bottom: var(--spacing-xs);
}

.pub-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 10px;
}

.pub-abs-btn {
    display: inline-block;
    background: var(--color-terra-cotta);
    border: 1.5px solid var(--color-terra-cotta);
    padding: 4px 14px;
    border-radius: 20px;
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-white);
    cursor: pointer;
    letter-spacing: 0.04em;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.pub-abs-btn:hover {
    background: #6D1B16;
    border-color: #6D1B16;
    color: var(--color-white);
}

.pub-action-link {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-terra-cotta);
    border: 1.5px solid var(--color-terra-cotta);
    background: transparent;
    padding: 4px 14px;
    border-radius: 20px;
    letter-spacing: 0.04em;
    transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
}

.pub-action-link:hover {
    background: var(--color-terra-cotta);
    border-color: var(--color-terra-cotta);
    color: var(--color-white);
}

.pub-sep {
    display: none;
}

.pub-abstract {
    margin-top: var(--spacing-sm);
    font-size: 0.9rem;
    color: var(--color-text-light);
    line-height: 1.7;
    border: 1px dashed rgba(114, 47, 55, 0.4);
    border-radius: 4px;
    padding: var(--spacing-md);
    text-align: justify;
}

.pub-abstract.hidden {
    display: none;
}

/* Lightbox */
.pub-lightbox {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.88);
    z-index: 9999;
    align-items: center;
    justify-content: center;
    cursor: zoom-out;
}

.pub-lightbox-img {
    max-width: 95vw;
    max-height: 95vh;
    object-fit: contain;
    border-radius: 6px;
}

@media (max-width: 600px) {
    .publication {
        flex-direction: column;
    }

    .pub-row {
        flex-direction: column;
    }

    .pub-thumb-wrap {
        width: 100%;
        flex: none;
    }

    .pub-thumb {
        height: 180px;
    }

    .pub-year {
        display: none;
    }

    .pub-actions {
        flex-wrap: wrap;
    }
}


/* ==========================================================================
   Talks Section
   ========================================================================== */

.talks-list {
    max-width: 900px;
    margin: 0 auto var(--spacing-lg);
}

.talk {
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    overflow: hidden;
    transition: all var(--transition-medium);
}

.talk-content {
    width: 100%;
}

.talk-photos {
    display: grid;
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 148px 148px;
    gap: 4px;
    width: 100%;
    height: 300px;
    margin-top: var(--spacing-sm);
    border-radius: 6px;
    overflow: hidden;
    box-sizing: border-box;
}

.talk-photos img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    min-width: 0;
    min-height: 0;
}

/* First photo: large, spans both rows on the left */
.talk-photos img:first-child {
    grid-row: 1 / 3;
}

/* Single photo: takes full grid */
.talk-photos img:only-child {
    grid-column: 1 / 3;
    grid-row: 1 / 3;
}

.talk.featured {
    border: 1px solid rgba(114, 47, 55, 0.2);
    box-shadow: 0 4px 20px rgba(30, 58, 95, 0.08);
}

.talk:hover {
    transform: translateX(4px);
}

.talk-venue {
    display: inline-block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-brown-gray);
    background-color: rgba(30, 58, 95, 0.1);
    padding: 4px 12px;
    border-radius: 20px;
    margin-bottom: var(--spacing-sm);
}

.talk-title {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-brown-gray);
}

.talk-description {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
}

.talk-links {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-sm);
}

.talk-link {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    color: var(--color-terra-cotta);
    padding: 4px 14px;
    border: 1px solid var(--color-terra-cotta);
    border-radius: 4px;
    transition: background var(--transition-fast), color var(--transition-fast);
}

.talk-link:hover {
    background-color: var(--color-terra-cotta);
    color: var(--color-white);
}


.contribution-highlight {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
}

.contribution-highlight h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-terra-cotta);
}

.contribution-highlight p {
    margin-bottom: 0;
}

/* ==========================================================================
   Teaching Section
   ========================================================================== */

.teaching-content {
    max-width: 900px;
    margin: 0 auto;
}

.teaching-category {
    margin-bottom: var(--spacing-lg);
}

.teaching-category h3 {
    margin-bottom: var(--spacing-md);
    color: var(--color-terra-cotta);
    padding-bottom: var(--spacing-xs);
    border-bottom: 1px solid rgba(114, 47, 55, 0.2);
}

.teaching-category h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    margin-bottom: 0.6rem;
}

.teaching-logo {
    height: 28px;
    width: auto;
    object-fit: contain;
    flex-shrink: 0;
}

.teaching-list {
    list-style: none;
}

.teaching-list li {
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid rgba(30, 58, 95, 0.1);
}

.teaching-list li:last-child {
    border-bottom: none;
}

.teaching-details {
    display: block;
    font-size: 0.9rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

/* ==========================================================================
   TechRun Gallery
   ========================================================================== */

.techrun-gallery {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
}

.gallery-item {
    border-radius: 10px;
    overflow: hidden;
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.07);
}

.gallery-placeholder {
    width: 100%;
    height: 200px;
    background: #d8d8d8;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aaa;
    font-size: 0.85rem;
}

.gallery-placeholder::after {
    content: "Photo";
}

.gallery-caption {
    font-size: 0.82rem;
    color: #555;
    text-align: center;
    padding: 0.5rem 0.75rem;
    margin: 0;
    background: #fff;
}

/* ==========================================================================
   Service Section
   ========================================================================== */

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.service-card {
    background-color: var(--color-white);
    padding: var(--spacing-md);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(30, 58, 95, 0.08);
    transition: all var(--transition-medium);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(30, 58, 95, 0.12);
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-xs);
    color: var(--color-brown-gray);
}

.service-card .role {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-terra-cotta);
    margin-bottom: var(--spacing-sm);
}

.service-card p:last-child {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

.advising-cta {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    border: 1px solid rgba(114, 47, 55, 0.2);
}

.advising-cta p {
    margin-bottom: 0;
    font-size: 1.05rem;
    color: var(--color-text);
}

/* ==========================================================================
   Beyond Research Section
   ========================================================================== */

.interests-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.interest-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-cream-warm);
    border-radius: 8px;
    transition: all var(--transition-medium);
}

.interest-item:hover {
    background-color: var(--color-apricot-light);
    transform: translateY(-4px);
}

.interest-icon {
    font-size: 2.5rem;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.interest-item h4 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-brown-gray);
}

.interest-item p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    margin-bottom: 0;
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-intro {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.contact-info {
    margin-bottom: var(--spacing-md);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: 1.1rem;
    color: var(--color-brown-gray);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 30px;
    box-shadow: 0 4px 20px rgba(30, 58, 95, 0.08);
    transition: all var(--transition-fast);
}

.contact-link:hover {
    background-color: var(--color-brown-gray);
    color: var(--color-white);
    transform: translateY(-2px);
}

.contact-icon {
    font-size: 1.2rem;
}

.contact-social {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.social-btn {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-terra-cotta);
    padding: 10px 24px;
    border: 1px solid var(--color-terra-cotta);
    border-radius: 25px;
    transition: all var(--transition-fast);
}

.social-btn:hover {
    background-color: var(--color-terra-cotta);
    color: var(--color-white);
}

.contact-note {
    font-size: 0.95rem;
    color: var(--color-text-light);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.footer {
    padding: var(--spacing-lg) 0;
    background-color: #6D1B16;
    color: var(--color-white);
    text-align: center;
}

.footer p {
    margin-bottom: var(--spacing-xs);
    font-size: 0.9rem;
}

.footer-note {
    font-style: italic;
    opacity: 0.7;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: var(--spacing-lg);
    }

    .hero-persian .hero-content {
        max-width: 100%;
        margin: 0 auto;
    }

    .hero-text {
        max-width: 100%;
        margin: 0 auto;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-lg: 3rem;
        --spacing-xl: 4rem;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-cream);
        padding: var(--spacing-md);
        gap: var(--spacing-xs);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-medium);
        border-bottom: 1px solid rgba(30, 58, 95, 0.1);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-link {
        padding: var(--spacing-sm);
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .profile-photo {
        width: 200px;
        height: 200px;
    }

    .research-areas,
    .service-grid,
    .interests-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    h1 {
        font-size: 1.75rem;
    }

    .pub-links,
    .talk-links {
        flex-wrap: wrap;
    }

    .contact-social {
        flex-direction: column;
        align-items: center;
    }

    .social-btn {
        width: 100%;
        max-width: 200px;
    }
}

/* ==========================================================================
   Multi-Page Layout Styles
   ========================================================================== */

/* Page Header */
.page-header {
    padding: calc(var(--nav-height) + var(--spacing-xl)) 0 var(--spacing-lg);
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-cream-warm) 100%);
    text-align: center;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-intro {
    color: var(--color-text-light);
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
}

/* News List */
.news-list {
    max-width: 800px;
    margin: 0 auto;
}

.news-item {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(47, 38, 26, 0.1);
}

.news-item:last-child {
    border-bottom: none;
}

.news-date {
    flex-shrink: 0;
    width: 80px;
    font-weight: 600;
    color: var(--color-terra-cotta);
    font-size: 0.9rem;
}

.news-content {
    flex: 1;
}

.news-content strong {
    color: var(--color-brown-gray);
}

/* Group/Mentees Grid */
.group-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.group-member {
    background: var(--color-white);
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(47, 38, 26, 0.09);
    padding: 20px 16px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.group-member .member-photo {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.group-member .member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.group-member h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.member-role {
    font-size: 0.8rem;
    font-weight: 600;
    color: #B5294E;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 3px 0 2px;
}

.group-member .member-bio {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin: 0;
    line-height: 1.4;
}

.group-member {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(47, 38, 26, 0.08);
    transition: all var(--transition-medium);
}

.group-member:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(47, 38, 26, 0.12);
}

.member-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    margin: 0 auto var(--spacing-sm);
    background-color: var(--color-cream-warm);
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.photo-placeholder-small {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-apricot-light) 0%, var(--color-cream-warm) 100%);
    color: var(--color-text-light);
    font-size: 0.8rem;
}

.group-member h3 {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
}

.member-affiliation {
    font-size: 0.9rem;
    color: var(--color-terra-cotta);
    margin-bottom: 0.25rem;
}

.member-topic {
    font-size: 0.85rem;
    color: var(--color-text-light);
}

/* Mentorship Info */
.mentorship-info {
    max-width: 700px;
    margin: 0 auto;
}

.mentorship-info ul {
    list-style: none;
    padding: 0;
    margin: var(--spacing-sm) 0;
}

.mentorship-info li {
    padding: var(--spacing-xs) 0;
    padding-left: 1.5rem;
    position: relative;
}

.mentorship-info li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-terra-cotta);
}

/* Featured Card */
.featured-card {
    border: 2px solid var(--color-terra-cotta);
}

/* Active Nav Link */
.nav-link.active {
    background: #002A5C;
    color: #fff;
}

.nav-link.active::after {
    display: none;
}

.nav-link.active:hover {
    background: #002A5C;
    color: #fff;
}

.nav-social {
    display: flex;
    align-items: center;
    gap: 10px;
    order: -1;
    margin-left: 0.75rem;
    margin-right: auto;
}

.nav-social a {
    display: flex;
    align-items: center;
    transition: opacity 0.2s;
}

.nav-social a:hover {
    opacity: 0.7;
}

/* TechRun Header Special */
.techrun-header {
    background: linear-gradient(180deg, var(--color-cream) 0%, var(--color-apricot-light) 100%);
}

/* Responsive adjustments for multi-page */
@media (max-width: 768px) {
    .news-item {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .news-date {
        width: auto;
    }

    .group-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .navbar,
    .nav-toggle {
        display: none;
    }

    .hero {
        min-height: auto;
        padding: var(--spacing-md) 0;
    }

    .section {
        padding: var(--spacing-md) 0;
        page-break-inside: avoid;
    }

    a {
        color: var(--color-text);
        text-decoration: underline;
    }
}