/* ============================================
   ICSEMI 2026 - Main Stylesheet
   ============================================ */

:root {
    --green-dark: #0a3d1f;
    --green-primary: #1a5c32;
    --green-nav: #1e6b3a;
    --green-lime: #8bc34a;
    --green-lime-bright: #a4d65e;
    --orange: #e8681b;
    --orange-hover: #d45a15;
    --yellow: #f5c518;
    --white: #ffffff;
    --gray-light: #f5f7f5;
    --gray-bg: #eef2ee;
    --text-dark: #1a1a1a;
    --text-muted: #555555;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
    --radius: 8px;
    --radius-lg: 12px;
    --transition: 0.3s ease;
    --font-heading: 'Source Sans 3', 'Helvetica Neue', Helvetica, Arial, sans-serif;
    --font-body: 'Source Sans 3', 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

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

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-block;
    padding: 12px 28px;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    border: 2px solid transparent;
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
}

.btn-green {
    background: var(--green-primary);
    color: var(--white);
    border-color: var(--green-primary);
}

.btn-green:hover {
    background: var(--green-dark);
    border-color: var(--green-dark);
}

.btn-lime {
    background: var(--green-lime);
    color: var(--white);
    border-color: var(--green-lime);
}

.btn-lime:hover {
    background: var(--green-lime-bright);
}

.btn-orange {
    background: var(--orange);
    color: var(--white);
    border-color: var(--orange);
}

.btn-orange:hover {
    background: var(--orange-hover);
    border-color: var(--orange-hover);
}

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

.btn-outline-white:hover {
    background: var(--white);
    color: var(--green-dark);
}

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

.btn-outline-yellow:hover {
    background: var(--yellow);
    color: var(--green-dark);
}

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

.btn-outline-dark:hover {
    background: var(--green-dark);
    color: var(--white);
}

/* ============================================
   Official Sponsor
   ============================================ */

.sponsor-section {
    background: var(--white);
    padding: 36px 0 28px;
    border-bottom: 1px solid #e8e8e8;
}

.sponsor-inner {
    text-align: center;
}

.sponsor-label {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 16px;
}

.sponsor-logo-wrap {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    background: var(--gray-light);
    border-radius: var(--radius-lg);
    border: 1px solid #e4e8e4;
}

.sponsor-logo {
    max-height: 88px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    display: block;
}

.sponsor-name {
    margin-top: 12px;
    font-size: 0.88rem;
    color: var(--text-muted);
    font-weight: 500;
}

/* ============================================
   Page Hero (inner pages)
   ============================================ */

.page-hero {
    background: linear-gradient(135deg, #0a3d1f 0%, #1a5c32 100%);
    color: var(--white);
    padding: 56px 0 48px;
}

.page-hero-eyebrow {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: var(--green-lime);
    margin-bottom: 12px;
}

.page-hero h1 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 14px;
    line-height: 1.2;
}

.page-hero-lead {
    max-width: 720px;
    font-size: 1.05rem;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 24px;
}

.page-hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.page-hero-actions .btn-outline-dark {
    color: var(--white);
    border-color: rgba(255, 255, 255, 0.7);
}

.page-hero-actions .btn-outline-dark:hover {
    background: var(--white);
    color: var(--green-dark);
    border-color: var(--white);
}

/* ============================================
   Call for Submissions Page
   ============================================ */

.submission-page-section {
    padding: 50px 0 70px;
    background: #f7f9f7;
}

.submission-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 32px;
    align-items: start;
}

.submission-content {
    background: var(--white);
    border: 1px solid #e4e8e4;
    border-radius: var(--radius-lg);
    padding: 36px 40px;
}

.submission-block + .submission-block {
    margin-top: 36px;
    padding-top: 32px;
    border-top: 1px solid #e8ece8;
}

.submission-block h2 {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 16px;
}

.submission-block h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin: 22px 0 10px;
}

.submission-block p {
    color: var(--text-muted);
    font-size: 0.94rem;
    line-height: 1.75;
    margin-bottom: 12px;
}

.submission-bullets,
.submission-steps {
    margin: 0 0 16px;
    padding-left: 22px;
    color: var(--text-muted);
}

.submission-bullets li,
.submission-steps li {
    margin-bottom: 8px;
    line-height: 1.6;
    font-size: 0.94rem;
}

.submission-note {
    background: #f3f8f0;
    border-left: 3px solid var(--green-lime);
    padding: 12px 16px;
    border-radius: 0 var(--radius) var(--radius) 0;
    color: var(--text-dark) !important;
}

.submission-link {
    color: var(--green-primary);
    font-weight: 600;
    word-break: break-all;
}

.submission-link:hover {
    color: var(--green-dark);
    text-decoration: underline;
}

.submission-sidebar {
    display: flex;
    flex-direction: column;
    gap: 16px;
    position: sticky;
    top: 90px;
}

.submission-side-card {
    background: var(--white);
    border: 1px solid #e4e8e4;
    border-radius: var(--radius-lg);
    padding: 22px;
}

.submission-side-card h3 {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.submission-side-card ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.submission-side-card li {
    border-bottom: 1px solid #f0f0f0;
}

.submission-side-card li:last-child {
    border-bottom: none;
}

.submission-side-card a {
    display: block;
    padding: 10px 0;
    color: var(--text-muted);
    font-size: 0.88rem;
    font-weight: 500;
}

.submission-side-card a:hover {
    color: var(--green-primary);
}

.submission-side-card p {
    font-size: 0.88rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    line-height: 1.5;
}

.submission-side-card-cta {
    background: var(--green-dark);
    border-color: var(--green-dark);
    color: var(--white);
}

.submission-side-card-cta h3,
.submission-side-card-cta p {
    color: var(--white);
}

.submission-side-card-cta .btn {
    width: 100%;
    margin-top: 8px;
}

.btn-sm {
    padding: 8px 20px;
    font-size: 0.75rem;
}

/* ============================================
   Top Bar
   ============================================ */

.top-bar {
    background: var(--green-dark);
    color: var(--white);
    font-size: 0.8rem;
    padding: 8px 0;
}

.top-bar-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.top-bar-left,
.top-bar-right {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.top-bar a {
    color: rgba(255, 255, 255, 0.85);
    display: flex;
    align-items: center;
    gap: 6px;
}

.top-bar a:hover {
    color: var(--green-lime);
}

.top-bar a i {
    font-size: 0.75rem;
}

/* ============================================
   Logo Bar
   ============================================ */

.logo-bar {
    background: var(--white);
    padding: 16px 0 14px;
    border-bottom: 1px solid #e0e0e0;
}

.logo-bar-inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 20px;
}

.logo-item {
    display: flex;
    align-items: center;
    min-width: 0;
}

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

.logo-center {
    justify-content: center;
}

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

.logo-link {
    display: inline-flex;
    align-items: center;
}

.logo-img {
    display: block;
    width: auto;
    object-fit: contain;
}

.logo-rungta {
    max-height: 72px;
    max-width: 240px;
}

.logo-shaastrarth {
    max-height: 55px;
    max-width: 420px;
}

.logo-icsemi {
    max-height: 80px;
    max-width: 360px;
}

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

.main-nav {
    background: var(--white);
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid #e0e0e0;
    box-shadow: none;
}

.nav-inner {
    display: flex;
    align-items: center;
    position: relative;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 10px;
    margin-left: auto;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 3px;
    background: var(--green-primary);
    border-radius: 2px;
    transition: var(--transition);
}

.nav-menu {
    display: flex;
    list-style: none;
    width: 100%;
    justify-content: center;
}

.nav-menu > li > a {
    display: block;
    padding: 14px 16px;
    color: var(--text-dark);
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: color var(--transition);
    white-space: nowrap;
}

.nav-menu > li > a:hover,
.nav-menu > li > a.active {
    color: var(--green-primary);
    background: transparent;
}

.nav-menu > li > a.active {
    border-bottom: none;
    padding-bottom: 14px;
}

.nav-menu > li > a i {
    font-size: 0.6rem;
    margin-left: 4px;
}

.has-dropdown {
    position: relative;
}

.dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 200px;
    list-style: none;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius) var(--radius);
    z-index: 100;
}

.dropdown li a {
    display: block;
    padding: 10px 20px;
    color: var(--text-dark);
    font-size: 0.85rem;
    font-family: var(--font-body);
    font-weight: 500;
}

.dropdown li a:hover {
    background: var(--gray-light);
    color: var(--green-primary);
}

.has-dropdown:hover .dropdown {
    display: block;
}

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

.hero {
    position: relative;
    min-height: 540px;
    display: flex;
    align-items: center;
    overflow: hidden;
    background: var(--green-dark);
}

.hero-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center right;
    opacity: 0.35;
}

.hero::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        rgba(10, 31, 18, 0.97) 0%,
        rgba(10, 31, 18, 0.92) 40%,
        rgba(10, 31, 18, 0.75) 65%,
        rgba(10, 31, 18, 0.5) 100%
    );
    z-index: 1;
    pointer-events: none;
}

.hero-inner {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 40px;
    padding: 50px 20px;
}

.hero-content {
    max-width: 580px;
}

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-montage-img {
    width: 100%;
    max-width: 400px;
    height: auto;
    object-fit: contain;
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.12);
    color: var(--white);
    padding: 6px 18px;
    border-radius: 30px;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    margin-bottom: 18px;
    border: 1px solid rgba(255, 255, 255, 0.25);
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--green-lime);
    line-height: 1.2;
    margin-bottom: 16px;
    text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.95);
    font-size: 1.05rem;
    font-weight: 500;
    margin-bottom: 22px;
    line-height: 1.55;
}

.hero-domains {
    display: flex;
    flex-wrap: wrap;
    gap: 6px 0;
    margin-bottom: 22px;
    padding: 14px 18px;
    border: 1px solid rgba(245, 197, 24, 0.5);
    border-radius: var(--radius);
    background: rgba(0, 0, 0, 0.25);
}

.hero-domains span {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.8rem;
    font-weight: 500;
}

.hero-domains span:not(:last-child)::after {
    content: ' | ';
    color: var(--yellow);
    margin: 0 6px;
    opacity: 0.7;
}

.hero-details {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.hero-detail {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.9rem;
    line-height: 1.4;
}

.hero-detail i {
    color: var(--green-lime);
    width: 18px;
    text-align: center;
    margin-top: 3px;
    flex-shrink: 0;
}

.hero-tagline {
    color: var(--yellow);
    font-style: italic;
    font-size: 0.9rem;
    margin-bottom: 28px;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
}

.hero-buttons .btn {
    min-width: 168px;
}

/* ============================================
   Statistics & UN Goals
   ============================================ */

.stats-section {
    background: var(--white);
    padding: 30px 0;
    border-bottom: 1px solid #e8e8e8;
}

.stats-inner {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 24px;
}

.stats-grid {
    display: flex;
    flex: 1;
    justify-content: space-between;
    gap: 15px;
}

.stat-item {
    text-align: center;
    flex: 1;
}

.stat-item i {
    font-size: 1.8rem;
    color: var(--green-primary);
    margin-bottom: 8px;
    display: block;
}

.stat-item strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--green-dark);
}

.stat-item span {
    font-size: 0.78rem;
    color: var(--text-muted);
    font-weight: 500;
}

.un-goals {
    text-align: center;
    width: 100%;
    padding-top: 24px;
    border-top: 2px solid var(--gray-bg);
    overflow: hidden;
}

.un-goals h3 {
    font-family: var(--font-heading);
    font-size: 0.7rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 16px;
    letter-spacing: 0.5px;
    padding: 0 12px;
    line-height: 1.4;
}

.sdg-grid {
    display: grid;
    grid-template-columns: repeat(6, minmax(0, 1fr));
    gap: 20px 16px;
    max-width: 100%;
    margin: 0 auto;
    justify-items: center;
}

.sdg-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    width: 100%;
    max-width: 120px;
}

.sdg-item img {
    width: 100%;
    max-width: 88px;
    height: auto;
    aspect-ratio: 1;
    display: block;
    border-radius: 6px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.14);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.sdg-item img:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
}

.sdg-item span {
    font-size: 0.68rem;
    font-weight: 600;
    color: var(--text-muted);
    line-height: 1.25;
    text-align: center;
}

/* ============================================
   About & Dates
   ============================================ */

.about-dates-section {
    padding: 60px 0;
    background: var(--gray-light);
}

.about-dates-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: start;
}

.about-block {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

.about-image {
    flex-shrink: 0;
}

.about-image img {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}

.about-text h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 15px;
}

.about-text p {
    color: var(--text-muted);
    font-size: 0.92rem;
    margin-bottom: 12px;
    line-height: 1.7;
}

.dates-block {
    background-color: var(--green-dark);
    background-image:
        url('../images/dates-card-bg.png'),
        radial-gradient(circle at 20% 30%, rgba(139, 195, 74, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(139, 195, 74, 0.06) 0%, transparent 40%);
    background-size: cover, auto, auto;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--white);
    padding: 32px 28px 28px;
    border-radius: var(--radius-lg);
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.dates-block::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(8, 45, 24, 0.92) 0%, rgba(10, 61, 31, 0.88) 100%);
    z-index: 0;
}

.dates-block > * {
    position: relative;
    z-index: 1;
}

.dates-block h2 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 24px;
    letter-spacing: 1.2px;
    display: flex;
    align-items: center;
    gap: 12px;
    text-transform: uppercase;
}

.dates-block h2 i {
    font-size: 1.2rem;
    opacity: 0.9;
}

.dates-list {
    list-style: none;
    margin: 0 0 24px 0;
    padding: 0 0 0 24px;
    position: relative;
}

.dates-list::before {
    content: '';
    position: absolute;
    left: 5px;
    top: 14px;
    bottom: 14px;
    width: 2px;
    background: linear-gradient(180deg, rgba(139, 195, 74, 0.2) 0%, rgba(139, 195, 74, 0.5) 50%, rgba(139, 195, 74, 0.2) 100%);
    border-radius: 1px;
}

.dates-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid rgba(139, 195, 74, 0.15);
    gap: 16px;
    position: relative;
}

.dates-list li::before {
    content: '';
    position: absolute;
    left: -18px;
    top: 50%;
    transform: translate(-50%, -50%);
    width: 11px;
    height: 11px;
    background: var(--green-lime);
    border-radius: 50%;
    box-shadow: 0 0 10px rgba(139, 195, 74, 0.8), 0 0 4px rgba(139, 195, 74, 0.6);
    z-index: 1;
}

.dates-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.date-label {
    font-size: 0.86rem;
    flex: 1;
    color: rgba(255, 255, 255, 0.95);
    line-height: 1.4;
}

.date-value {
    color: var(--yellow);
    font-weight: 700;
    font-size: 0.86rem;
    white-space: nowrap;
    text-align: right;
}

.btn-dates {
    display: inline-block;
    padding: 12px 28px;
    font-size: 0.8rem;
    background: var(--green-lime);
    color: var(--white);
    border-color: var(--green-lime);
}

.btn-dates:hover {
    background: var(--green-lime-bright);
    border-color: var(--green-lime-bright);
    color: var(--white);
}

/* ============================================
   Conference Tracks
   ============================================ */

.tracks-section {
    padding: 60px 0 70px;
    background: var(--white);
}

.section-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 36px;
}

.section-header h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--green-dark);
    letter-spacing: 1px;
    text-align: center;
}

.section-header-center {
    justify-content: center;
    text-align: center;
}

.tracks-slider-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    gap: 15px;
}

.tracks-nav {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--green-primary);
    background: var(--white);
    color: var(--green-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-size: 0.9rem;
}

.tracks-nav:hover {
    background: var(--green-primary);
    color: var(--white);
}

.tracks-slider {
    display: flex;
    gap: 16px;
    overflow-x: auto;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
    padding: 8px 4px 12px;
    flex: 1;
}

.tracks-slider::-webkit-scrollbar {
    display: none;
}

.track-card {
    flex: 0 0 196px;
    background: var(--white);
    border: 1px solid #e8ece8;
    border-radius: 14px;
    padding: 22px 14px 18px;
    text-align: center;
    box-shadow: 0 4px 16px rgba(10, 61, 31, 0.06);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.track-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(10, 61, 31, 0.1);
    border-color: #d4e4d8;
}

.track-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 52px;
    margin-bottom: 12px;
}

.track-icon img {
    width: 48px;
    height: 48px;
    object-fit: contain;
    display: block;
}

.track-card h3 {
    font-family: var(--font-heading);
    font-size: 0.72rem;
    font-weight: 500;
    color: #3a4a3f;
    line-height: 1.4;
    padding: 0 2px;
}

/* ============================================
   Information Grid
   ============================================ */

.info-grid-section {
    padding: 50px 0;
    background: var(--white);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    align-items: stretch;
    border: 1px solid #e4e8e4;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--white);
}

.info-card {
    background: var(--white);
    padding: 32px 22px 28px;
    border-radius: 0;
    box-shadow: none;
    display: flex;
    flex-direction: column;
    height: 100%;
    text-align: center;
    border-right: 1px solid #e4e8e4;
}

.info-card:last-child {
    border-right: none;
}

.info-card-icon {
    color: var(--green-primary);
    font-size: 1.85rem;
    line-height: 1;
    margin-bottom: 12px;
}

.info-card-icon .far,
.info-card-icon .fas {
    display: block;
}

.info-card--publication h3 {
    margin-bottom: 6px;
}

.info-card--publication .info-card-body {
    text-align: center;
}

.info-card--publication .pub-subtitle {
    margin-bottom: 22px;
}

.info-card h3 {
    font-family: var(--font-heading);
    font-size: 0.92rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 14px;
    padding-bottom: 0;
    border-bottom: none;
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.info-card-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    padding-top: 0;
    text-align: left;
}

.info-card-text {
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.55;
    margin-top: auto;
}

.pub-subtitle {
    font-size: 0.82rem;
    color: var(--text-dark);
    margin-bottom: 18px;
    text-align: center;
}

.pub-logo {
    display: flex;
    justify-content: center;
    align-items: center;
    flex: 1;
    min-height: 80px;
    margin-bottom: 4px;
}

.pub-logo img {
    max-width: 92%;
    height: auto;
    max-height: 80px;
    object-fit: contain;
}

.fees-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.fees-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #f0f0f0;
}

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

.fee-label {
    font-size: 0.84rem;
    color: var(--text-dark);
    font-weight: 500;
    line-height: 1.35;
}

.fees-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}

.fees-table th {
    text-align: left;
    padding: 0 6px 10px;
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--green-primary);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.3px;
    border-bottom: 1px solid #e8e8e8;
}

.fees-table th:not(:first-child) {
    text-align: center;
}

.fees-table td {
    padding: 12px 6px;
    color: var(--text-dark);
    font-weight: 500;
    border-bottom: 1px solid #f0f0f0;
    vertical-align: middle;
}

.fees-table tbody tr:last-child td {
    border-bottom: none;
}

.fees-table td:not(:first-child) {
    text-align: center;
}

.fee-badge {
    display: inline-block;
    background: var(--green-lime);
    color: var(--white);
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.78rem;
    white-space: nowrap;
    flex-shrink: 0;
}

.info-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.info-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 11px 0;
    font-size: 0.84rem;
    color: var(--text-muted);
    border-bottom: 1px solid #f0f0f0;
    line-height: 1.4;
    text-align: left;
}

.info-list li:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.payment-list li {
    border-bottom: 1px solid #f0f0f0;
}

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

.payment-list-long {
    font-size: 0.76rem !important;
    line-height: 1.5 !important;
    padding-top: 12px !important;
}

.submission-list li i,
.payment-list li i {
    color: var(--green-lime);
    font-size: 0.95rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.info-card .btn {
    margin-top: auto;
    width: auto;
    min-width: 210px;
    align-self: center;
    flex-shrink: 0;
    margin-bottom: 0;
    padding: 12px 22px;
    font-size: 0.78rem;
    border-radius: 6px;
}

/* Payment Details Modal */
.payment-modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition), visibility var(--transition);
}

.payment-modal.is-open {
    opacity: 1;
    visibility: visible;
}

.payment-modal-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.55);
}

.payment-modal-dialog {
    position: relative;
    width: 100%;
    max-width: 720px;
    z-index: 1;
    transform: translateY(16px);
    transition: transform var(--transition);
}

.payment-modal.is-open .payment-modal-dialog {
    transform: translateY(0);
}

.payment-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 34px;
    height: 34px;
    border: none;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-muted);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), color var(--transition);
    z-index: 2;
}

.payment-modal-close:hover {
    background: var(--white);
    color: var(--green-dark);
}

.payment-details-card {
    background: var(--gray-light);
    border: 1px solid #e4e8e4;
    border-radius: var(--radius-lg);
    padding: 28px 32px 32px;
}

.payment-details-card h2 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--green-dark);
    margin-bottom: 24px;
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.payment-details-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px 40px;
}

.payment-details-col {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.payment-detail-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.payment-detail-item strong {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: var(--text-muted);
    font-weight: 600;
}

.payment-detail-item span {
    font-size: 0.92rem;
    color: var(--text-dark);
    font-weight: 600;
    line-height: 1.45;
}

.payment-detail-item a {
    color: var(--green-primary);
    font-weight: 700;
}

.payment-detail-item a:hover {
    color: var(--green-dark);
    text-decoration: underline;
}

body.modal-open {
    overflow: hidden;
}

/* ============================================
   Committee Section
   ============================================ */

.committee-section {
    padding: 60px 0;
    background: var(--white);
}

.committee-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.committee-group {
    background: var(--gray-light);
    border-radius: var(--radius-lg);
    padding: 24px;
    border-top: 3px solid var(--green-lime);
}

.committee-group h3 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--green-dark);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid #dde5de;
}

.committee-group ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.committee-group li {
    font-size: 0.9rem;
    color: var(--text-muted);
    padding: 6px 0;
    line-height: 1.4;
}

.committee-group li strong {
    display: block;
    color: var(--text-dark);
    font-weight: 600;
}

.committee-role {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ============================================
   Venue & Contact
   ============================================ */

.venue-contact-section {
    padding: 60px 0;
    background: var(--green-dark);
    color: var(--white);
}

.venue-contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.venue-block h2,
.contact-block h2 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
    letter-spacing: 0.5px;
}

.venue-block h2 i,
.contact-block h2 i {
    color: var(--green-lime);
}

.venue-name {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--green-lime);
    margin-bottom: 8px;
}

.venue-address,
.venue-dates,
.venue-note {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 10px;
    line-height: 1.6;
}

.venue-dates i {
    color: var(--yellow);
    margin-right: 6px;
}

.venue-note {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    font-style: italic;
    opacity: 0.9;
}

.contact-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.contact-list li {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

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

.contact-list li > i {
    color: var(--green-lime);
    font-size: 1rem;
    margin-top: 4px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

.contact-list strong {
    display: block;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.4px;
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: 4px;
}

.contact-list a {
    color: var(--white);
    font-size: 0.92rem;
}

.contact-list a:hover {
    color: var(--green-lime);
}

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

.upper-footer {
    background: var(--green-dark);
    padding: 35px 0;
}

.footer-features {
    display: flex;
    justify-content: space-between;
    gap: 20px;
}

.footer-feature {
    text-align: center;
    color: var(--white);
    flex: 1;
}

.footer-feature i {
    font-size: 1.8rem;
    color: var(--green-lime);
    margin-bottom: 8px;
    display: block;
}

.footer-feature span {
    font-size: 0.78rem;
    font-weight: 500;
    line-height: 1.3;
}

.bottom-footer {
    background: #0a1f12;
    padding: 20px 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.82rem;
}

.bottom-footer-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a:hover {
    color: var(--green-lime);
}

.footer-credit strong {
    color: var(--green-lime);
}

/* ============================================
   Responsive - Tablet
   ============================================ */

@media (max-width: 1024px) {
    .about-dates-grid {
        grid-template-columns: 1fr;
    }

    .info-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .info-card {
        border-bottom: 1px solid #e4e8e4;
    }

    .info-card:nth-child(odd) {
        border-right: 1px solid #e4e8e4;
    }

    .info-card:nth-child(even) {
        border-right: none;
    }

    .info-card:nth-last-child(-n+2) {
        border-bottom: none;
    }

    .payment-details-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .payment-details-col {
        gap: 18px;
    }

    .committee-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .submission-layout {
        grid-template-columns: 1fr;
    }

    .submission-sidebar {
        position: static;
    }

    .venue-contact-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .sdg-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 18px 14px;
    }

    .sdg-item {
        max-width: 110px;
    }

    .hero-inner {
        grid-template-columns: 1fr;
        gap: 30px;
        padding: 40px 20px;
    }

    .hero-visual {
        order: -1;
    }

    .hero-montage-img {
        max-width: 280px;
    }

    .hero-content {
        max-width: 100%;
    }

    .page-hero {
        padding: 40px 0 36px;
    }

    .page-hero h1 {
        font-size: 1.7rem;
    }

    .submission-content {
        padding: 24px 20px;
    }

    .sponsor-logo {
        max-height: 72px;
        max-width: 140px;
    }
}

/* ============================================
   Responsive - Mobile
   ============================================ */

@media (max-width: 768px) {
    .top-bar-left,
    .top-bar-right {
        gap: 10px;
        font-size: 0.72rem;
    }

    .logo-bar-inner {
        grid-template-columns: 1fr;
        gap: 12px;
        text-align: center;
    }

    .logo-item {
        justify-content: center !important;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: var(--shadow-lg);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu > li > a {
        padding: 12px 20px;
        border-bottom: 1px solid #eee;
        color: var(--text-dark);
    }

    .nav-menu > li > a.active {
        border-bottom: 1px solid #eee;
        border-left: 3px solid var(--green-primary);
        padding-bottom: 12px;
        color: var(--green-primary);
    }

    .has-dropdown .dropdown {
        position: static;
        box-shadow: none;
        background: var(--gray-light);
        border-radius: 0;
    }

    .has-dropdown:hover .dropdown,
    .has-dropdown.open .dropdown {
        display: block;
    }

    .dropdown li a {
        color: var(--text-dark);
        padding-left: 40px;
    }

    .hero {
        min-height: auto;
    }

    .hero-inner {
        padding: 32px 20px;
    }

    .hero-visual {
        display: none;
    }

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

    .logo-rungta,
    .logo-shaastrarth,
    .logo-icsemi {
        max-width: 100%;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-title {
        font-size: 1.5rem;
    }

    .hero-subtitle {
        font-size: 0.95rem;
    }

    .hero-domains span:not(:last-child)::after {
        content: '';
        margin: 0;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .hero-buttons .btn {
        width: 100%;
    }

    .stats-grid {
        flex-wrap: wrap;
    }

    .stat-item {
        flex: 0 0 calc(33.33% - 10px);
    }

    .sdg-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 16px 12px;
        padding: 0 4px;
    }

    .sdg-item {
        max-width: none;
    }

    .sdg-item img {
        max-width: 68px;
    }

    .sdg-item span {
        font-size: 0.62rem;
        line-height: 1.3;
    }

    .un-goals h3 {
        font-size: 0.65rem;
    }

    .about-block {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .about-image img {
        width: 150px;
        height: 150px;
    }

    .section-header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .tracks-nav {
        display: none;
    }

    .info-grid {
        grid-template-columns: 1fr;
    }

    .info-card {
        border-right: none !important;
        border-bottom: 1px solid #e4e8e4;
    }

    .info-card:last-child {
        border-bottom: none;
    }

    .info-card .btn {
        width: 100%;
        min-width: 0;
    }

    .committee-grid {
        grid-template-columns: 1fr;
    }

    .footer-features {
        flex-wrap: wrap;
    }

    .footer-feature {
        flex: 0 0 calc(33.33% - 14px);
    }

    .bottom-footer-inner {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .top-bar-inner {
        flex-direction: column;
        align-items: flex-start;
    }

    .stat-item {
        flex: 0 0 calc(50% - 8px);
    }

    .footer-feature {
        flex: 0 0 calc(50% - 10px);
    }

    .hero-title {
        font-size: 1.3rem;
    }

    .dates-list li {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding-left: 4px;
    }

    .date-value {
        white-space: normal;
        text-align: left;
    }
}

/* Nav toggle animation */
.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
}

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

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
}