/* ============================================================
   ICCASA 2026 — Unified Stylesheet
   Sections:
     1. Variables & Reset
     2. Layout Utilities
     3. Header / Branding
     4. Navbar
     5. Hero (Home + Page)
     6. Buttons & CTA
     7. About / Stats
     8. Highlights
     9. Scope (Thrust Areas)
    10. Speakers
    11. Team
    12. Footer
    13. Animations & Utilities
    14. Responsive
   ============================================================ */


/* ==========  1. VARIABLES & RESET  ========== */

:root {
    --primary-color: #1a237e;
    --secondary-color: #ff6f00;
    --accent-color: #00e5ff;
    --dark-bg: #0d1117;
    --light-bg: #f4f6f8;
    --text-dark: #2d2d2d;
    --text-light: #fff;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --nav-height: 70px;
    --transition-speed: 0.3s;
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
    --hover-shadow: 0 18px 40px rgba(0, 0, 0, 0.12);
    --radius: 12px;
    --font-main: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-main);
    background-color: var(--light-bg);
    color: var(--text-dark);
    overflow-x: hidden;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

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

a:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 2px;
    border-radius: 3px;
}

ul {
    list-style: none;
}

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


/* ==========  2. LAYOUT UTILITIES  ========== */

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

.section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.section-header h3 {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
}

.section-header.left-align {
    text-align: left;
}

.highlight {
    color: var(--secondary-color);
}

.underline {
    width: 80px;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    margin: 0 auto;
    border-radius: 2px;
}

.section-header.left-align .underline {
    margin: 0;
}

.row {
    display: flex;
    gap: 50px;
    align-items: center;
    flex-wrap: wrap;
}

.col-half {
    flex: 1;
    min-width: 300px;
}

/* Inner-page layout (scope, speakers, team) */
.page-layout {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.page-content {
    padding-bottom: 80px;
    flex: 1;
}


/* ==========  3. HEADER / BRANDING  ========== */

.top-header {
    background: #ffffff;
    padding: 10px 0;
    border-bottom: 1px solid #eaeaea;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
}

.branding-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 5px 20px;
}

.logo-group {
    display: flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.logo-group.left {
    justify-content: flex-start;
}

.logo-group.right {
    justify-content: flex-end;
}

.header-logo {
    width: auto;
    display: block;
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.header-logo:hover {
    transform: scale(1.05);
}

.uem-img {
    max-height: 65px;
}

.iccasa-img {
    max-height: 85px;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

/* Scopus Badge */
.scopus-badge {
    background: #f58220;
    color: white;
    font-family: var(--font-main);
    font-weight: 700;
    font-size: 0.9rem;
    padding: 8px 18px;
    border-radius: 50px;
    letter-spacing: 1px;
    box-shadow: 0 4px 10px rgba(245, 130, 32, 0.3);
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.scopus-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(245, 130, 32, 0.4);
}

.scopus-badge i {
    font-size: 1.1em;
}


/* ==========  4. NAVBAR  ========== */

.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(26, 35, 126, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: background 0.4s ease, box-shadow 0.4s ease;
}

.navbar.scrolled {
    background: rgba(10, 15, 60, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.nav-brand-mobile {
    display: none;
    color: white;
    font-weight: 700;
    font-size: 1.2rem;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    gap: 20px;
    margin: 0 auto;
}

.nav-link {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 5px 0;
    position: relative;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: white;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -2px;
    left: 0;
    background: linear-gradient(to right, var(--accent-color), var(--secondary-color));
    transition: width 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    border-radius: 1px;
}

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

.nav-link:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
}

/* Hamburger */
.hamburger {
    display: none;
    cursor: pointer;
    padding: 5px;
    z-index: 1001;
}

.hamburger:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 4px;
    border-radius: 3px;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    transition: all 0.35s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    background-color: white;
    border-radius: 2px;
}


/* ==========  5. HERO SECTIONS  ========== */

/* --- Home Hero --- */
.hero-section {
    position: relative;
    height: calc(100vh - var(--nav-height));
    min-height: 600px;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    overflow: hidden;
    color: white;
}

.hero-slideshow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    opacity: 0;
    transition: opacity 1.5s ease-in-out;
    transform: scale(1.1);
}

.slide.active {
    opacity: 1;
    transform: scale(1);
    transition: opacity 1.5s ease-in-out, transform 6s linear;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.85) 0%, rgba(0, 0, 0, 0.6) 100%);
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    max-width: 900px;
    padding: 20px;
}

.gradient-text {
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 5rem;
    font-weight: 800;
    letter-spacing: 2px;
    margin: 10px 0;
}

.hero-content h4 {
    font-size: 1.5rem;
    font-weight: 400;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.9);
}

.subtitle {
    font-size: 1.5rem;
    margin-bottom: 20px;
    font-weight: 300;
}

.event-details {
    font-size: 1.2rem;
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    gap: 15px;
    align-items: center;
}

/* --- Page Hero (Inner pages) --- */
.page-hero {
    position: relative;
    height: 260px;
    background:
        linear-gradient(135deg, rgba(26, 35, 126, 0.9) 0%, rgba(0, 0, 0, 0.7) 100%),
        url("https://images.unsplash.com/photo-1451187580459-43490279c0fa?q=80&w=1920&auto=format&fit=crop");
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    margin-bottom: 50px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.page-hero.speakers-hero {
    background-image:
        linear-gradient(135deg, rgba(26, 35, 126, 0.9) 0%, rgba(0, 0, 0, 0.7) 100%),
        url("https://images.unsplash.com/photo-1544531586-fde5298cdd40?q=80&w=1920&auto=format&fit=crop");
}

.page-hero.team-hero {
    background-image:
        linear-gradient(135deg, rgba(26, 35, 126, 0.9) 0%, rgba(0, 0, 0, 0.8) 100%),
        url("https://images.unsplash.com/photo-1521737604893-d14cc237f11d?q=80&w=1920&auto=format&fit=crop");
}

.hero-title h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 10px;
    background: linear-gradient(to right, #fff, var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-title p {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 1px;
}


/* ==========  6. BUTTONS & CTA  ========== */

.cta-group {
    display: flex;
    justify-content: center;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    padding: 14px 32px;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    text-transform: uppercase;
    display: inline-block;
    letter-spacing: 0.5px;
    position: relative;
    overflow: hidden;
}

.btn:focus-visible {
    outline: 2px solid var(--accent-color);
    outline-offset: 3px;
}

.btn-primary {
    background: var(--secondary-color);
    color: white;
    border: 2px solid var(--secondary-color);
    box-shadow: 0 4px 15px rgba(255, 111, 0, 0.35);
}

.btn-primary:hover {
    background: transparent;
    color: var(--secondary-color);
    box-shadow: 0 8px 30px rgba(255, 111, 0, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid rgba(255, 255, 255, 0.8);
}

.btn-secondary:hover {
    background: white;
    color: var(--primary-color);
    box-shadow: 0 8px 25px rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
}


/* ==========  7. ABOUT / STATS  ========== */

.about-conf {
    background-color: white;
}

.glass-card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
    backdrop-filter: blur(4px);
    padding: 40px;
    border-radius: var(--radius);
    border-left: 5px solid var(--secondary-color);
    transition: box-shadow var(--transition-speed);
}

.glass-card:hover {
    box-shadow: 0 12px 40px 0 rgba(31, 38, 135, 0.12);
}

.text-block p {
    font-size: 1.1rem;
    line-height: 1.85;
    color: #555;
    margin-bottom: 20px;
}

.about-uem {
    background: linear-gradient(135deg, #f4f6f8 0%, #e3e6e8 100%);
}

.about-uem p {
    font-size: 1.1rem;
    line-height: 1.85;
    color: #444;
    margin-bottom: 15px;
}

.stat-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.stat-card {
    background: white;
    padding: 30px;
    text-align: center;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    transition: transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1), box-shadow 0.35s ease;
    border-bottom: 3px solid transparent;
}

.stat-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
    border-bottom-color: var(--accent-color);
}

.stat-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.stat-card h3 {
    margin-bottom: 5px;
    color: var(--text-dark);
}


/* ==========  8. HIGHLIGHTS  ========== */

.highlights {
    background-color: white;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.highlight-card {
    background: white;
    border: 1px solid #eee;
    padding: 30px 20px;
    text-align: center;
    border-radius: var(--radius);
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
    border-bottom: 3px solid transparent;
}

.highlight-card:hover {
    border-color: transparent;
    border-bottom-color: var(--accent-color);
    box-shadow: var(--hover-shadow);
    transform: translateY(-6px);
}

.icon-box {
    width: 60px;
    height: 60px;
    background: var(--light-bg);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
    color: var(--secondary-color);
    transition: all 0.35s ease;
}

.highlight-card:hover .icon-box {
    background: var(--secondary-color);
    color: white;
    transform: scale(1.1);
}

.highlight-card h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}


/* ==========  9. SCOPE (THRUST AREAS)  ========== */

.thrust-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
    padding: 0;
}

.thrust-list li {
    background: white;
    padding: 25px;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    border-bottom: 3px solid transparent;
    font-size: 1.05rem;
    color: #444;
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    display: flex;
    align-items: flex-start;
    gap: 15px;
    position: relative;
    overflow: hidden;
}

.thrust-list li::before {
    content: "\f101";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    color: var(--secondary-color);
    font-size: 1.2rem;
    margin-top: 2px;
    flex-shrink: 0;
    transition: transform 0.3s, color 0.3s;
}

.thrust-list li:hover {
    transform: translateY(-6px);
    box-shadow: var(--hover-shadow);
    border-bottom-color: var(--accent-color);
}

.thrust-list li:hover::before {
    transform: translateX(5px);
    color: var(--primary-color);
}


/* ==========  10. SPEAKERS  ========== */

.speaker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 30px;
    padding-bottom: 80px;
}

.speaker-item {
    background: white;
    border-radius: 15px;
    padding: 25px;
    display: flex;
    align-items: center;
    gap: 25px;
    box-shadow: var(--card-shadow);
    border: 1px solid rgba(0, 0, 0, 0.05);
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
    overflow: hidden;
}

.speaker-item::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    transition: background 0.3s;
}

.speaker-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
}

.speaker-item:hover::before {
    background: var(--secondary-color);
}

.speaker-item img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--light-bg);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
    transition: transform 0.35s, border-color 0.35s;
}

.speaker-item:hover img {
    transform: scale(1.05);
    border-color: var(--accent-color);
}

.speaker-details {
    flex: 1;
}

.speaker-details h2 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 8px;
    font-weight: 700;
    line-height: 1.3;
}

.speaker-details p {
    color: #555;
    font-size: 0.95rem;
    margin-bottom: 4px;
    line-height: 1.5;
}

.speaker-details p:first-of-type {
    color: var(--secondary-color);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.section-separator {
    height: 2px;
    background: #e0e0e0;
    margin: 20px 0 60px 0;
}


/* ==========  11. TEAM  ========== */

.team-section {
    padding: 40px 0 80px 0;
}

/* Advisory / Organizing grid */
.team-heading {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-color);
    margin-bottom: 40px;
    position: relative;
    display: inline-block;
    width: 100%;
    letter-spacing: 0.5px;
}

.team-heading::after {
    content: "";
    display: block;
    width: 60px;
    height: 4px;
    background: var(--secondary-color);
    margin: 12px auto 0;
    border-radius: 2px;
}

.team-table {
    border-radius: var(--radius);
    overflow: hidden;
    background: #fff;
    box-shadow: var(--card-shadow);
}

.team-row {
    display: flex;
    align-items: center;
    padding: 18px 25px 18px 20px;
    border-bottom: 1px solid #eef1f6;
    border-left: 4px solid transparent;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    position: relative;
}

.team-row:nth-child(even) {
    background: rgba(26, 35, 126, 0.02);
}

.team-row:last-child {
    border-bottom: none;
}

.team-row:hover {
    background: rgba(26, 35, 126, 0.06);
    border-left-color: var(--secondary-color);
    transform: translateX(4px);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.team-name {
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--primary-color);
    width: 35%;
}

.team-role {
    font-size: 0.95rem;
    color: #555;
    width: 60%;
    line-height: 1.5;
    padding-left: 10px;
    border-left: 2px solid #e8ecf0;
}

/* Think Tank Cards */
.team-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 40px;
    padding: 20px 0;
}

.team-card:nth-child(1),
.team-card:nth-child(2),
.team-card:nth-child(3) {
    grid-column: span 2;
}

.team-card:nth-child(4) {
    grid-column: 2 / span 2;
}

.team-card:nth-child(5) {
    grid-column: 4 / span 2;
}

.team-card {
    display: flex;
    gap: 20px;
    padding: 20px;
    border: 1px solid #e3e6f0;
    border-radius: var(--radius);
    background: #fff;
    align-items: center;
    box-shadow: var(--card-shadow);
    transition: all 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.team-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--hover-shadow);
}

.team-img img {
    width: 180px;
    height: 220px;
    object-fit: cover;
    border-radius: 8px;
    border: 3px solid var(--primary-color);
    transition: border-color 0.3s;
}

.team-card:hover .team-img img {
    border-color: var(--accent-color);
}

.team-info h3 {
    margin-bottom: 6px;
    color: var(--primary-color);
    font-size: 1.15rem;
}

.team-info .role {
    font-weight: 700;
    color: var(--secondary-color);
    margin-bottom: 8px;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 1px;
}

.team-info p:not(.role) {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 2px;
}


/* ==========  12. FOOTER  ========== */

.main-footer {
    background: var(--dark-bg);
    color: white;
    padding-top: 60px;
    margin-top: auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-col {
    flex: 1;
    min-width: 250px;
}

.footer-col h3 {
    color: var(--accent-color);
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-col p {
    color: #bbb;
    margin-bottom: 10px;
    line-height: 1.7;
}

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

.footer-links a {
    color: #bbb;
    transition: color 0.3s, padding-left 0.3s;
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 5px;
}

.social-icons {
    display: flex;
    gap: 15px;
}

.social-icons a {
    width: 42px;
    height: 42px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    color: white;
    transition: all 0.35s ease;
}

.social-icons a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px) scale(1.1);
    box-shadow: 0 5px 15px rgba(255, 111, 0, 0.3);
}

.footer-bottom {
    text-align: center;
    padding: 20px 0;
    color: #777;
    font-size: 0.9rem;
}


/* ==========  13. ANIMATIONS & UTILITIES  ========== */

.animate-text {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 1s ease forwards;
}

.delay-1 {
    animation-delay: 0.2s;
}

.delay-2 {
    animation-delay: 0.4s;
}

.delay-3 {
    animation-delay: 0.6s;
}

.delay-4 {
    animation-delay: 0.8s;
}

.delay-5 {
    animation-delay: 1s;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

body.no-scroll {
    overflow: hidden;
}


/* ==========  14. RESPONSIVE  ========== */

/* --- Tablet (992px) --- */
@media (max-width: 992px) {
    .hamburger {
        display: block;
    }

    .nav-brand-mobile {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: var(--nav-height);
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(26, 35, 126, 0.98);
        backdrop-filter: blur(12px);
        -webkit-backdrop-filter: blur(12px);
        width: 100%;
        max-width: none;
        height: calc(100vh - var(--nav-height));
        text-align: center;
        transition: transform 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        transform: translateX(100%);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        padding: 40px 0;
        gap: 0;
        overflow-y: auto;
    }

    .nav-menu.active {
        transform: translateX(0);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
    }

    .nav-item {
        margin: 18px 0;
        opacity: 0;
        transform: translateX(30px);
        transition: opacity 0.3s ease, transform 0.3s ease;
    }

    .nav-menu.active .nav-item {
        opacity: 1;
        transform: translateX(0);
    }

    /* Stagger animation for menu items */
    .nav-menu.active .nav-item:nth-child(1) {
        transition-delay: 0.05s;
    }

    .nav-menu.active .nav-item:nth-child(2) {
        transition-delay: 0.1s;
    }

    .nav-menu.active .nav-item:nth-child(3) {
        transition-delay: 0.15s;
    }

    .nav-menu.active .nav-item:nth-child(4) {
        transition-delay: 0.2s;
    }

    .nav-menu.active .nav-item:nth-child(5) {
        transition-delay: 0.25s;
    }

    .nav-menu.active .nav-item:nth-child(6) {
        transition-delay: 0.3s;
    }

    .nav-menu.active .nav-item:nth-child(7) {
        transition-delay: 0.35s;
    }

    .nav-menu.active .nav-item:nth-child(8) {
        transition-delay: 0.4s;
    }

    .nav-menu.active .nav-item:nth-child(9) {
        transition-delay: 0.45s;
    }

    .nav-link {
        font-size: 1.15rem;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    /* Header — keep logos in a single row */
    .top-header {
        padding: 8px 0;
    }

    .branding-container {
        flex-wrap: nowrap;
        gap: 10px;
        padding: 8px 15px;
        align-items: center;
    }

    .logo-group.left,
    .logo-group.center,
    .logo-group.right {
        flex: 1 1 0;
        min-width: 0;
        justify-content: center;
    }

    .header-logo {
        max-width: 100%;
    }

    .uem-img {
        max-height: 45px;
    }

    .iccasa-img {
        max-height: 55px;
    }

    .scopus-badge {
        font-size: 0.7rem;
        padding: 5px 10px;
        letter-spacing: 0.5px;
    }

    .scopus-badge i {
        display: none;
    }

    .gradient-text {
        font-size: 3.5rem;
    }

    .hero-content h4 {
        font-size: 1.2rem;
    }

    /* Speaker grid to single column */
    .speaker-grid {
        grid-template-columns: 1fr;
    }

    /* Team grid to 2 columns */
    .team-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .team-card {
        grid-column: auto !important;
    }
}

/* --- Medium Mobile (768px) --- */
@media (max-width: 768px) {
    html,
    body {
        overflow-x: hidden;
    }

    #site-header,
    #site-nav,
    .top-header,
    .navbar,
    .branding-container,
    .nav-container,
    .hero-section,
    .hero-slideshow,
    .slide,
    .hero-overlay,
    .hero-content,
    .page-hero,
    .container {
        max-width: 100%;
    }

    img {
        max-width: 100%;
    }

    h1,
    h2,
    h3,
    h4,
    h5,
    h6,
    p,
    a,
    li,
    span {
        word-wrap: break-word;
        overflow-wrap: break-word;
    }

    .branding-container {
        gap: 8px;
        padding: 6px 10px;
    }

    .uem-img {
        max-height: 38px;
    }

    .iccasa-img {
        max-height: 48px;
    }

    .scopus-badge {
        font-size: 0.65rem;
        padding: 4px 8px;
    }

    /* About section stacking */
    .row {
        flex-direction: column;
        gap: 30px;
    }

    .col-half {
        width: 100%;
    }

    /* Stat cards */
    .stat-grid {
        grid-template-columns: 1fr;
    }

    /* Footer stacking */
    .footer-content {
        flex-direction: column;
        gap: 30px;
        text-align: center;
    }

    .footer-col {
        align-items: center;
    }

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

    /* Team rows → compact cards on mobile */
    .team-row {
        flex-direction: column;
        gap: 4px;
        padding: 14px 16px;
        border-left-width: 4px;
        border-radius: 0;
    }

    .team-name {
        width: 100%;
        font-size: 1rem;
    }

    .team-role {
        width: 100%;
        border-left: none;
        padding-left: 38px;
        font-size: 0.85rem;
        color: #666;
    }
}

/* --- Small Mobile (600px) --- */
@media (max-width: 600px) {
    .gradient-text {
        font-size: 2.5rem;
    }

    .event-details {
        flex-direction: column;
        gap: 5px;
    }

    .separator {
        display: none;
    }

    .cta-group {
        flex-direction: column;
        width: 100%;
        padding: 0 20px;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    /* Team grid single column */
    .team-grid {
        grid-template-columns: 1fr;
    }

    .team-card {
        flex-direction: column;
        text-align: center;
    }

    .team-img img {
        width: 160px;
        height: 200px;
    }
}

/* --- Extra Small Mobile (480px) --- */
@media (max-width: 480px) {
    .gradient-text {
        font-size: 2.2rem;
        line-height: 1.2;
    }

    .hero-content {
        padding: 10px;
    }

    .hero-content h4 {
        font-size: 0.9rem;
        margin-bottom: 5px;
    }

    .subtitle {
        font-size: 1rem;
        line-height: 1.4;
    }

    .event-details {
        font-size: 1rem;
    }

    .cta-group {
        padding: 0 10px;
    }

    .btn {
        margin-bottom: 10px;
    }

    .section-header h2 {
        font-size: 1.8rem;
    }

    .glass-card {
        padding: 20px;
    }

    /* Page hero */
    .hero-title h1 {
        font-size: 2rem;
    }

    /* Thrust areas single column */
    .thrust-list {
        grid-template-columns: 1fr;
    }

    /* Speaker cards stack */
    .speaker-item {
        flex-direction: column;
        text-align: center;
        padding: 30px 20px;
    }

    .speaker-item::before {
        width: 100%;
        height: 4px;
    }

    /* Team table single column */
    .team-table {
        grid-template-columns: 1fr;
    }
}

/* ==========  15. CALL FOR PAPERS PAGE  ========== */

.callforpapers-page .cfp-main {
    padding-bottom: 80px;
}

.callforpapers-page .cfp-card {
    background: #fff;
    border-radius: var(--radius);
    box-shadow: var(--card-shadow);
    padding: 32px;
}

.callforpapers-page .cfp-heading {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 16px;
    font-weight: 800;
}

.callforpapers-page .cfp-intro {
    color: #444;
    line-height: 1.85;
    margin-bottom: 18px;
}

.callforpapers-page .cfp-list {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0 0 18px 0;
}

.callforpapers-page .cfp-list li {
    margin-bottom: 10px;
    color: #2f2f2f;
    line-height: 1.7;
}

.callforpapers-page .cfp-link-row {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 10px 0;
    color: #1f2937;
}

.callforpapers-page .cfp-link {
    color: #2563eb;
    text-decoration: underline;
    font-weight: 700;
}

.callforpapers-page .cfp-subheading {
    font-size: 2.5rem;
    color: #1b2235;
    margin: 34px 0 16px;
    font-weight: 800;
    line-height: 1.15;
}

.callforpapers-page .cfp-guidelines {
    list-style: disc;
    padding-left: 1.5rem;
    margin: 0;
}

.callforpapers-page .cfp-guidelines li {
    margin-bottom: 10px;
    line-height: 1.7;
    color: #111827;
}

.callforpapers-page .cfp-guidelines.nested {
    margin-top: 12px;
    padding-left: 2.8rem;
}