/* ===== CSS Variables - White & Red Theme ===== */
:root {
    --primary-color: #DC2626;
    --primary-dark: #B91C1C;
    --primary-light: #FEE2E2;
    --primary-gradient: linear-gradient(135deg, #DC2626 0%, #B91C1C 100%);

    --bg-color: #FFFFFF;
    --bg-alt: #FEF2F2;
    --card-bg: #FFFFFF;
    --card-border: #F3F4F6;

    --text-primary: #111827;
    --text-secondary: #4B5563;
    --text-muted: #9CA3AF;

    --input-bg: #F9FAFB;
    --input-border: #E5E7EB;
    --input-focus: #DC2626;

    --success-color: #10B981;
    --error-color: #EF4444;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.12);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;

    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    --header-height: 80px;
}

/* ===== Reset & Base ===== */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--header-height);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===== Header ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    z-index: 1000;
    transition: all var(--transition-normal);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 12px;
}

.logo-img {
    height: 48px;
    width: auto;
}

.logo-placeholder {
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-placeholder.small {
    transform: scale(0.8);
    transform-origin: left;
}

.logo-icon {
    font-size: 1.5rem;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: -0.5px;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background: var(--primary-light);
}

.nav-link.active {
    color: var(--primary-color);
    background: var(--primary-light);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 6px;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 3px;
    background: var(--primary-color);
    border-radius: 2px;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

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

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

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

/* ===== Hero Section ===== */
.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--header-height);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--primary-gradient);
}

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

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.6) 0%, rgba(0, 0, 0, 0.3) 100%);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
    padding: 40px 24px;
    max-width: 800px;
}

.hero-tag {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 20px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 16px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero-subtitle {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 32px;
}

.hero-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
}

.hero-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* ===== Sections ===== */
.section {
    padding: 100px 0;
}

.section-alt {
    background: var(--bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    margin-bottom: 16px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ===== Introduction Section ===== */
.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h3 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.intro-text p {
    color: var(--text-secondary);
    margin-bottom: 16px;
    font-size: 1.05rem;
}

.intro-highlights {
    display: flex;
    gap: 24px;
    margin-top: 32px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 12px;
}

.highlight-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.highlight-text strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.highlight-text span {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.intro-image img {
    width: 100%;
    height: 100%;
    max-height: 400px;
    object-fit: cover;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}

.image-placeholder {
    background: var(--bg-alt);
    border: 2px dashed var(--input-border);
    border-radius: var(--radius-xl);
    padding: 80px 40px;
    text-align: center;
    color: var(--text-muted);
}

.image-placeholder span {
    font-size: 3rem;
    display: block;
    margin-bottom: 12px;
}

/* ===== Cards ===== */
.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 32px;
    margin-bottom: 24px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.speaker-photo {
    width: 250px;
    height: 250px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    margin-bottom: 20px;
}

.speaker-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center center;
    transition: object-position 0.1s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--input-border);
}

.card-icon {
    width: 48px;
    height: 48px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.card-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-color);
}

.card-header h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ===== Form Styles ===== */
.registration-form {
    max-width: 800px;
    margin: 0 auto;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.required {
    color: var(--error-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--input-bg);
    border: 2px solid var(--input-border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:hover,
.form-group textarea:hover {
    border-color: #D1D5DB;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--input-focus);
    background: white;
    box-shadow: 0 0 0 4px var(--primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.error-message {
    font-size: 0.8rem;
    color: var(--error-color);
    min-height: 18px;
    opacity: 0;
    transform: translateY(-5px);
    transition: all var(--transition-fast);
}

.form-group.error input {
    border-color: var(--error-color);
    background: #FEF2F2;
}

.form-group.error .error-message {
    opacity: 1;
    transform: translateY(0);
}

/* ===== Upload Zone ===== */
.upload-zone {
    border: 2px dashed var(--input-border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    background: var(--input-bg);
}

.upload-zone:hover {
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.upload-zone.drag-over {
    border-color: var(--primary-color);
    background: var(--primary-light);
    transform: scale(1.01);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
}

.upload-icon svg {
    width: 32px;
    height: 32px;
    color: white;
}

.upload-zone h4 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.upload-zone p {
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.upload-hint {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: block;
}

/* ===== File List ===== */
.file-list {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px;
    background: var(--input-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--input-border);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }

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

.file-icon {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.file-icon svg {
    width: 22px;
    height: 22px;
    color: var(--primary-color);
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-size {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.file-progress {
    width: 100%;
    height: 4px;
    background: var(--input-border);
    border-radius: 2px;
    margin-top: 8px;
    overflow: hidden;
}

.file-progress-bar {
    height: 100%;
    background: var(--primary-gradient);
    border-radius: 2px;
    transition: width 0.3s ease;
}

.file-status {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 500;
}

.file-status.uploading {
    background: var(--primary-light);
    color: var(--primary-color);
}

.file-status.complete {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.file-remove {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.file-remove:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.file-remove svg {
    width: 18px;
    height: 18px;
}

/* ===== Form Actions ===== */
.form-actions {
    display: flex;
    justify-content: center;
    margin-top: 16px;
}

.submit-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 18px 48px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.submit-btn:hover::before {
    left: 100%;
}

.submit-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.submit-btn:active {
    transform: translateY(-1px);
}

.submit-btn .btn-icon {
    width: 20px;
    height: 20px;
    transition: transform var(--transition-fast);
}

.submit-btn:hover .btn-icon {
    transform: translateX(4px);
}

.submit-btn.loading {
    pointer-events: none;
}

.submit-btn.loading .btn-text,
.submit-btn.loading .btn-icon {
    opacity: 0;
}

.btn-loader {
    position: absolute;
    width: 24px;
    height: 24px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    opacity: 0;
    animation: spin 0.8s linear infinite;
}

.submit-btn.loading .btn-loader {
    opacity: 1;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ===== Event Details Section ===== */
.details-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 60px;
}

.detail-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.detail-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.detail-icon {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.detail-card h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 12px;
}

.detail-main {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.detail-sub {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* Schedule */
.schedule {
    max-width: 800px;
    margin: 0 auto;
}

.schedule-title {
    font-size: 1.5rem;
    font-weight: 700;
    text-align: center;
    margin-top: 40px;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.schedule-overview {
    /* Removed grid layout for full-width image */
    background: transparent;
    padding: 0;
    border-radius: var(--radius-lg);
    box-shadow: none;
    /* Let the image have shadow if needed, or container */
    overflow: hidden;
}

/* .schedule-highlights removed */

.schedule-visual {
    position: relative;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    background: var(--bg-light);
    /* min-height: 300px; Remove fixed height to allow image to dictate */
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    /* Ensure full width */
}

.schedule-img {
    width: 100%;
    height: auto;
    /* Allow natural aspect ratio */
    object-fit: contain;
    display: block;
}

.schedule-placeholder {
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
}

@media (max-width: 768px) {
    .schedule-overview {
        grid-template-columns: 1fr;
        padding: 30px 20px;
        gap: 30px;
    }

    .highlights-text {
        font-size: 2rem;
        text-align: center;
    }
}

/* ===== Schedule Table ===== */
.schedule-table-wrapper {
    width: 100%;
    overflow-x: auto;
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin: 30px 0;
}

.schedule-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.schedule-table th,
.schedule-table td {
    padding: 20px 24px;
    text-align: left;
    border-bottom: 1px solid var(--card-border);
    white-space: pre-line;
}

.schedule-table th {
    background: var(--primary-light);
    color: var(--primary-color);
    font-weight: 700;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
}

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

.schedule-table td:first-child {
    font-weight: 600;
    color: var(--text-primary);
    width: 200px;
    background: rgba(220, 38, 38, 0.02);
}

.schedule-table tr:hover td {
    background: rgba(220, 38, 38, 0.05);
}

@media (max-width: 768px) {
    .schedule-table td:first-child {
        width: 140px;
    }
}

/* ===== Sponsors Section ===== */
.sponsor-tier {
    margin-bottom: 48px;
}

.tier-title {
    text-align: center;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.sponsor-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
    max-width: 820px;
    /* Fits 4 logos (180*4 + 24*3) to ensure 9th is on row 3 centered */
    margin: 0 auto;
}

.sponsor-item {
    width: 180px;
    height: 90px;
    background: white;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-lg);
    padding: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    flex-shrink: 0;
    /* Prevent shrinking */
}

.sponsor-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.sponsor-grid.platinum .sponsor-item {
    min-width: 280px;
    min-height: 140px;
}

.sponsor-grid.gold .sponsor-item {
    min-width: 220px;
    min-height: 110px;
}

.sponsor-grid.silver .sponsor-item {
    min-width: 180px;
    min-height: 90px;
}

/* Force centering for the 9th item on desktop if it wraps to a new line */
.sponsor-grid.equal .sponsor-item:nth-child(9) {
    margin-left: auto;
    margin-right: auto;
}

.sponsor-item img {
    max-width: 100%;
    max-height: 80px;
    object-fit: contain;
}

.sponsor-placeholder {
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.sponsor-cta {
    text-align: center;
    margin-top: 48px;
    padding: 40px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
}

.sponsor-cta p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 32px;
    background: var(--primary-gradient);
    color: white;
    text-decoration: none;
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
}

.cta-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== Powered By Section ===== */
.powered-by {
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

.powered-by-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 16px;
}

.powered-by-logos {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

.powered-by-item {
    width: 140px;
    height: 70px;
    background: white;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-normal);
    flex-shrink: 0;
}

.powered-by-item:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.powered-by-item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    display: block;
}

.powered-placeholder {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
}

/* ===== Equal Sponsor Grid ===== */
.sponsor-grid.equal {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 24px;
    max-width: 900px;
    margin: 0 auto;
}

.sponsor-grid.equal .sponsor-item {
    height: 120px;
}

/* ===== Contact Section ===== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 60px;
    align-items: start;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 16px;
}

.contact-icon {
    width: 56px;
    height: 56px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-text h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 4px;
}

.contact-text p {
    color: var(--text-primary);
    font-weight: 500;
}

.social-links {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.social-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.contact-form {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-xl);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form .submit-btn {
    width: 100%;
}

/* ===== Footer ===== */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 60px 0 24px;
}

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

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-logo {
    height: 40px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer-brand .logo-placeholder {
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: white;
}

.footer-bottom {
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.875rem;
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: white;
    border-radius: var(--radius-xl);
    padding: 48px;
    text-align: center;
    max-width: 400px;
    width: 100%;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1) translateY(0);
}

.modal-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-icon.success {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%);
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
}

.modal-icon svg {
    width: 40px;
    height: 40px;
    color: white;
}

.modal h3 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.modal p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.modal-btn {
    padding: 14px 40px;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.modal-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
    .intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .intro-image {
        order: -1;
    }

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

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

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: 20px;
        border-bottom: 1px solid var(--card-border);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

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

    .nav-link {
        width: 100%;
        text-align: center;
        padding: 14px;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero {
        min-height: 500px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .section {
        padding: 60px 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .intro-highlights {
        flex-wrap: wrap;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 32px;
        text-align: center;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px 24px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .card {
        padding: 24px 20px;
    }

    .upload-zone {
        padding: 32px 20px;
    }

    .submit-btn {
        width: 100%;
        padding: 16px 32px;
    }

    .modal {
        padding: 32px 24px;
    }

    .contact-form {
        padding: 24px;
    }

    .schedule-item {
        flex-direction: column;
        gap: 8px;
    }

    /* Powered By - Mobile */
    .powered-by {
        margin-top: 30px;
        padding-top: 24px;
    }

    .powered-by-logos {
        gap: 16px;
    }

    .powered-by-item {
        width: 100px;
        height: 50px;
        padding: 8px;
    }

    /* Sponsor Grid - Mobile */
    .sponsor-grid.equal {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        gap: 16px;
    }

    .sponsor-grid.equal .sponsor-item {
        width: 150px;
        height: 75px;
        padding: 10px;
        margin: 0 auto;
    }
}

/* ===== Admin Login Link ===== */
.admin-login-link {
    background: none;
    border: none;
    color: rgba(255, 255, 255, 0.4);
    font-size: 0.8rem;
    cursor: pointer;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    margin-left: 16px;
}

.admin-login-link:hover {
    color: rgba(255, 255, 255, 0.8);
    background: rgba(255, 255, 255, 0.1);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

/* ===== Admin Login Modal ===== */
.admin-login-modal {
    position: relative;
}

.modal-icon.admin {
    background: linear-gradient(135deg, #374151 0%, #1F2937 100%);
    box-shadow: 0 10px 30px rgba(55, 65, 81, 0.3);
}

.login-error {
    color: var(--error-color);
    font-size: 0.875rem;
    text-align: center;
    min-height: 20px;
    margin-bottom: 8px;
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--input-bg);
    color: var(--text-muted);
    font-size: 1.5rem;
    line-height: 1;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

/* ===== Admin Panel ===== */
.admin-panel {
    position: fixed;
    top: 0;
    right: -420px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -10px 0 40px rgba(0, 0, 0, 0.15);
    z-index: 3000;
    transition: right var(--transition-normal);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.admin-panel.active {
    right: 0;
}

.admin-header {
    padding: 20px 24px;
    background: var(--text-primary);
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
}

.admin-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.admin-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-minimize-btn {
    width: 32px;
    height: 32px;
    border: none;
    background: rgba(0, 0, 0, 0.05);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.admin-minimize-btn:hover {
    background: rgba(0, 0, 0, 0.1);
    color: var(--text-primary);
}

/* Minimized Admin Panel */
.admin-panel.minimized {
    width: 50px;
    right: 0;
}

.admin-panel.minimized .admin-header {
    padding: 16px 12px;
    flex-direction: column;
}

.admin-panel.minimized .admin-header-left h2,
.admin-panel.minimized .admin-actions,
.admin-panel.minimized .admin-tabs,
.admin-panel.minimized .admin-tab-content {
    display: none;
}

.admin-panel.minimized .admin-minimize-btn {
    transform: rotate(180deg);
}

.admin-actions {
    display: flex;
    gap: 8px;
}

.admin-btn {
    padding: 8px 16px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.admin-btn.save {
    background: var(--success-color);
    color: white;
}

.admin-btn.save:hover {
    background: #059669;
}

.admin-btn.logout {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.admin-btn.logout:hover {
    background: rgba(255, 255, 255, 0.2);
}

.admin-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.admin-section {
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--input-border);
}

.admin-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.admin-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.admin-field {
    margin-bottom: 16px;
}

.admin-field:last-child {
    margin-bottom: 0;
}

.admin-field label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-muted);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.admin-field input,
.admin-field textarea {
    width: 100%;
    padding: 10px 12px;
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: 0.9rem;
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.admin-field input:focus,
.admin-field textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.admin-field textarea {
    resize: vertical;
    min-height: 80px;
}

.admin-field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 16px;
}

.admin-field-row .admin-field {
    margin-bottom: 0;
}

/* Admin Panel Overlay */
.admin-panel-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 2999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.admin-panel-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* Admin mode indicator */
body.admin-mode::before {
    content: '🔧 Admin Mode';
    position: fixed;
    top: var(--header-height);
    left: 50%;
    transform: translateX(-50%);
    padding: 8px 20px;
    background: var(--text-primary);
    color: white;
    font-size: 0.8rem;
    font-weight: 600;
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    z-index: 999;
    box-shadow: var(--shadow-md);
}

/* Editable highlight in admin mode */
body.admin-mode [data-editable] {
    outline: 2px dashed transparent;
    transition: outline-color var(--transition-fast);
}

body.admin-mode [data-editable]:hover {
    outline-color: var(--primary-color);
    cursor: pointer;
}

/* Save notification */
.save-notification {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 16px 24px;
    background: var(--success-color);
    color: white;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-weight: 500;
    z-index: 4000;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

/* Responsive Admin Panel */
@media (max-width: 480px) {
    .admin-panel {
        width: 100%;
        right: -100%;
    }

    .admin-header {
        flex-direction: column;
        gap: 12px;
        align-items: stretch;
    }

    .admin-actions {
        justify-content: center;
    }

    .admin-field-row {
        grid-template-columns: 1fr;
    }
}

/* ===== Admin Tabs ===== */
.admin-tabs {
    display: flex;
    background: var(--input-bg);
    border-bottom: 1px solid var(--input-border);
    flex-shrink: 0;
}

.admin-tab {
    flex: 1;
    padding: 14px 16px;
    background: none;
    border: none;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.admin-tab:hover {
    color: var(--text-secondary);
    background: rgba(0, 0, 0, 0.02);
}

.admin-tab.active {
    color: var(--primary-color);
    background: white;
}

.admin-tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-color);
}

/* Admin Tab Content */
.admin-tab-content {
    display: none;
    flex: 1;
    overflow: hidden;
    flex-direction: column;
}

.admin-tab-content.active {
    display: flex;
}

.admin-tab-content .admin-content {
    flex: 1;
    overflow-y: auto;
}

/* Admin Data Header */
.admin-data-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--input-bg);
    border-bottom: 1px solid var(--input-border);
    flex-shrink: 0;
}

.data-stats {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.data-stats strong {
    color: var(--primary-color);
    font-size: 1.25rem;
}

.data-actions {
    display: flex;
    gap: 8px;
}

.admin-btn.export {
    background: #3B82F6;
    color: white;
}

.admin-btn.export:hover {
    background: #2563EB;
}

.admin-btn.clear {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

.admin-btn.clear:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* Admin Data List */
.admin-data-list {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.data-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    color: var(--text-muted);
    text-align: center;
}

.data-empty span {
    font-size: 3rem;
    margin-bottom: 12px;
}

.data-empty p {
    font-size: 0.95rem;
}

/* Data Card */
.data-card {
    background: white;
    border: 1px solid var(--input-border);
    border-radius: var(--radius-md);
    padding: 16px;
    margin-bottom: 12px;
    transition: all var(--transition-fast);
}

.data-card:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--primary-light);
}

.data-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.data-card-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.data-card-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    background: var(--input-bg);
    padding: 4px 8px;
    border-radius: 4px;
}

.data-card-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.data-card-field {
    font-size: 0.85rem;
}

.data-card-field.full {
    grid-column: 1 / -1;
}

.data-card-label {
    color: var(--text-muted);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.data-card-value {
    color: var(--text-primary);
    word-break: break-word;
}

.data-card-files {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid var(--input-border);
}

.data-card-files-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.data-card-files-list {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.file-tag {
    font-size: 0.75rem;
    padding: 4px 8px;
    background: var(--primary-light);
    color: var(--primary-color);
    border-radius: 4px;
}

/* Delete button for data cards */
.data-card-delete {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    margin-left: 8px;
    flex-shrink: 0;
}

.data-card-delete:hover {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
}

/* Responsive data list */
@media (max-width: 480px) {
    .admin-data-header {
        flex-direction: column;
        gap: 12px;
    }

    .data-actions {
        width: 100%;
        justify-content: center;
    }

    .data-card-body {
        grid-template-columns: 1fr;
    }

    .admin-tabs {
        flex-wrap: wrap;
    }

    .admin-tab {
        flex: 1 0 50%;
    }
}

/* ===== Image Upload ===== */
.image-upload-group {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.image-upload-input {
    display: none;
}

.image-upload-btn {
    padding: 8px 16px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.image-upload-btn:hover {
    background: var(--primary-dark);
}

.image-upload-name {
    font-size: 0.8rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 150px;
}

.image-url-input {
    margin-top: 4px;
    font-size: 0.85rem !important;
}

.image-hint {
    display: block;
    font-size: 0.7rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 2px;
    opacity: 0.8;
}

/* Cropper Modal */
.cropper-modal {
    max-width: 600px !important;
    width: 90% !important;
    padding: 30px !important;
}

.cropper-container {
    width: 100%;
    max-height: 400px;
    margin: 20px 0;
    background: #f3f4f6;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.cropper-container img {
    max-width: 100%;
    display: block;
}

.cropper-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 20px;
}

.modal-btn.secondary {
    background: var(--input-bg);
    color: var(--text-secondary);
    border: 1px solid var(--input-border);
}

.modal-btn.secondary:hover {
    background: #e5e7eb;
}

.image-reset-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.image-reset-btn:hover {
    background: rgba(239, 68, 68, 0.2);
}

/* ===== File Preview Modal ===== */
.file-preview-modal {
    max-width: 90vw;
    max-height: 90vh;
    width: auto;
    position: relative;
}

.file-preview-modal h3 {
    margin-bottom: 16px;
    padding-right: 40px;
    word-break: break-word;
}

.preview-image-container {
    max-height: 70vh;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--input-bg);
    border-radius: var(--radius-md);
    padding: 16px;
}

.preview-image-container img {
    max-width: 100%;
    max-height: 65vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

/* ===== File Action Buttons ===== */
.file-tag-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin: 4px 4px 4px 0;
}

.file-action-btn {
    width: 24px;
    height: 24px;
    border: none;
    background: var(--primary-light);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    transition: all var(--transition-fast);
    padding: 0;
}

.file-action-btn:hover {
    background: var(--primary-color);
    transform: scale(1.1);
}

.file-action-btn.preview-btn:hover {
    background: #3B82F6;
}

.file-action-btn.download-btn:hover {
    background: var(--success-color);
}

/* =========================================
   CRITICAL OVERRIDES FOR LAYOUT
   ========================================= */

/* Force Flexbox for Sponsor Grid to ensure centering */
.sponsor-grid.equal {
    display: flex !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    grid-template-columns: none !important;
    /* Reset any grid columns */
    max-width: 820px !important;
    margin: 0 auto !important;
    gap: 24px !important;
}

/* Ensure Sponsor Items don't shrink and have fixed size */
.sponsor-grid.equal .sponsor-item {
    width: 180px !important;
    height: 90px !important;
    flex: 0 0 auto !important;
    /* Don't grow, don't shrink, fixed basis */
    margin: 0 !important;
    /* Reset margins, let flex gap handle spacing */
}

/* Specific rule for the 9th item to ensure it plays nice with flex wrap */
/* (In centered flex, it naturally centers, so margin auto isn't strictly needed, 
   but we'll keep it standard flex behavior) */
.sponsor-grid.equal .sponsor-item:nth-child(9) {
    margin-left: 0 !important;
    margin-right: 0 !important;
}

/* Ensure Schedule Image scales naturally */
.schedule-visual {
    height: auto !important;
    min-height: 0 !important;
}

.schedule-img {
    width: 100% !important;
    height: auto !important;
    object-fit: contain !important;
}

/* ===== Speaker Grid ===== */
.speaker-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.speaker-column {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.speaker-category {
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-light);
    min-height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
}

.speaker-empty {
    text-align: center;
    padding: 30px 10px;
    background: rgba(255, 255, 255, 0.5);
    border: 1px dashed var(--input-border);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.speaker-card {
    background: white;
    border-radius: var(--radius-xl);
    padding: 16px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    text-align: center;
    border: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.speaker-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.speaker-photo {
    width: 130px;
    height: 130px;
    border-radius: 50%;
    margin: 0 auto 16px;
    overflow: hidden;
    border: 3px solid var(--primary-light);
    box-shadow: var(--shadow-sm);
}

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

.speaker-info h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 6px;
    line-height: 1.3;
    width: 100%;
}

.speaker-credentials {
    font-size: 0.75rem;
    color: var(--primary-color);
    font-weight: 600;
    margin-bottom: 10px;
    line-height: 1.3;
}

.speaker-title {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

/* Responsive Speaker Grid */
@media (max-width: 900px) {
    .speaker-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 640px) {
    .speaker-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .speaker-photo {
        width: 100px;
        height: 100px;
    }
}

@media (max-width: 400px) {
    .speaker-grid {
        grid-template-columns: 1fr;
    }
}