/* MU Brand Colors */
:root {
    --mu-green: #80C342;
    --mu-blue: #0079C1;
    --mu-green-dark: #6BA635;
    --mu-blue-dark: #005F9E;
    --mu-green-light: #9DD35F;
    --mu-blue-light: #3399D1;
    --white: #ffffff;
    --light-gray: #f5f5f5;
    --gray: #666666;
    --dark-gray: #333333;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--dark-gray);
    background: var(--light-gray);
}

/* Header with University Logo */
.site-header {
    background: var(--white);
    padding: 20px 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 999;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.university-logo {
    height: 60px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
}

.header-register-btn {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 12px 28px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 121, 193, 0.3);
    white-space: nowrap;
}

.header-register-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 121, 193, 0.4);
    background: linear-gradient(135deg, #006ba6 0%, #6ba83d 100%);
}

/* Hero Banner Section */
.hero-banner {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 0;
    position: relative;
    overflow: hidden;
    min-height: 400px;
}

.banner-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    display: block;
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(0, 121, 193, 0.85) 0%, rgba(128, 195, 66, 0.85) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
}

.banner-content {
    text-align: center;
    max-width: 1000px;
}

.banner-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    animation: fadeInDown 1s ease;
}

.banner-content .subtitle {
    font-size: 1.5rem;
    margin-bottom: 15px;
    opacity: 0.95;
    animation: fadeInUp 1s ease 0.3s both;
}

.banner-content .dates {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    animation: fadeInUp 1s ease 0.5s both;
}

.banner-content .organizer {
    font-size: 1rem;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.7s both;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== TECH/AI BANNER ANIMATIONS ===== */

/* Tech Grid Background */
.tech-grid {
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 121, 193, 0.1) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 121, 193, 0.1) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% {
        background-position: 0 0;
    }
    100% {
        background-position: 50px 50px;
    }
}

/* Circuit Lines */
.circuit-lines {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 2;
    overflow: hidden;
    pointer-events: none;
}

.circuit-line {
    position: absolute;
    background: linear-gradient(90deg, transparent, rgba(0, 150, 255, 0.6), transparent);
    height: 2px;
}

.circuit-line-1 {
    top: 20%;
    left: 0;
    width: 40%;
    animation: circuitFlow1 4s ease-in-out infinite;
}

.circuit-line-2 {
    top: 60%;
    right: 0;
    width: 35%;
    animation: circuitFlow2 5s ease-in-out infinite 1s;
}

.circuit-line-3 {
    top: 80%;
    left: 0;
    width: 50%;
    animation: circuitFlow3 6s ease-in-out infinite 2s;
}

.circuit-dot {
    position: absolute;
    width: 8px;
    height: 8px;
    background: #00D4FF;
    border-radius: 50%;
    box-shadow: 0 0 15px #00D4FF, 0 0 30px #0096FF;
    animation: dotPulse 2s ease-in-out infinite;
}

.circuit-dot-1 {
    top: 20%;
    left: 38%;
    animation-delay: 0s;
}

.circuit-dot-2 {
    top: 60%;
    right: 2%;
    animation-delay: 1s;
}

.circuit-dot-3 {
    top: 80%;
    left: 48%;
    animation-delay: 2s;
}

.circuit-dot-4 {
    top: 40%;
    right: 20%;
    animation-delay: 1.5s;
}

@keyframes circuitFlow1 {
    0%, 100% {
        opacity: 0.3;
        transform: translateX(-20px);
    }
    50% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes circuitFlow2 {
    0%, 100% {
        opacity: 0.3;
        transform: translateX(20px);
    }
    50% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes circuitFlow3 {
    0%, 100% {
        opacity: 0.3;
        transform: translateX(-30px);
    }
    50% {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes dotPulse {
    0%, 100% {
        opacity: 0.5;
        transform: scale(1);
    }
    50% {
        opacity: 1;
        transform: scale(1.5);
    }
}

/* Floating Text Animations */
.floating-text {
    animation: float 3s ease-in-out infinite;
}

.floating-text-delayed {
    animation: float 3s ease-in-out 0.5s infinite;
}

.floating-text-delayed-most {
    animation: float 3s ease-in-out 1.5s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-8px);
    }
}

/* Tech Glow Effect on Title */
.tech-glow {
    text-shadow: 
        0 0 10px rgba(0, 212, 255, 0.5),
        0 0 20px rgba(0, 150, 255, 0.3),
        0 0 30px rgba(0, 121, 193, 0.2),
        2px 2px 4px rgba(0, 0, 0, 0.3);
    position: relative;
    display: inline-block;
}

/* Gradient Animation on Banner Overlay */
.banner-overlay {
    background: linear-gradient(135deg, rgba(0, 30, 60, 0.9) 0%, rgba(0, 121, 193, 0.85) 50%, rgba(0, 150, 255, 0.8) 100%);
    background-size: 200% 200%;
    animation: techGradientShift 10s ease infinite;
}

@keyframes techGradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* ===== TECH DATE TIMELINE ===== */

.tech-date-timeline {
    margin: 35px auto 25px;
    max-width: 450px;
    display: flex;
    align-items: center;
    gap: 20px;
}

/* Main Date Badge */
.date-badge-main {
    position: relative;
    width: 90px;
    height: 90px;
    flex-shrink: 0;
    animation: float 3s ease-in-out infinite;
}

.date-badge-inner {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: linear-gradient(135deg, #0096FF 0%, #00D4FF 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    box-shadow: 
        0 0 20px rgba(0, 150, 255, 0.5),
        0 0 40px rgba(0, 212, 255, 0.3),
        0 4px 15px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 2;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.date-day {
    font-size: 1.3rem;
    font-weight: 700;
    color: #fff;
    line-height: 1.2;
}

.date-weekday {
    font-size: 0.95rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.95);
}

.badge-pulse {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, transparent 70%);
    animation: badgePulse 2s ease-out infinite;
}

@keyframes badgePulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }
    100% {
        transform: scale(1.6);
        opacity: 0;
    }
}

/* Timeline Container */
.timeline-container {
    flex: 1;
    position: relative;
}

.timeline-dates {
    display: flex;
    justify-content: space-around;
    margin-bottom: 10px;
    gap: 20px;
}

.timeline-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.9);
    min-width: 55px;
}

.timeline-date span:first-child {
    font-weight: 600;
    margin-bottom: 2px;
}

.timeline-date .weekday {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.timeline-date-active {
    color: #00D4FF;
    text-shadow: 0 0 10px rgba(0, 212, 255, 0.6);
}

.timeline-date-gap {
    opacity: 0;
    pointer-events: none;
}

/* Timeline Bar */
.timeline-bar {
    display: flex;
    align-items: center;
    gap: 0;
    height: 12px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 20px;
    padding: 0 5px;
    backdrop-filter: blur(5px);
    box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.2);
}

.timeline-segment {
    flex: 1;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
}

.timeline-segment-active {
    background: linear-gradient(90deg, #0096FF, #00D4FF);
    border-radius: 20px;
    box-shadow: 0 0 15px rgba(0, 150, 255, 0.5);
    position: relative;
    overflow: hidden;
    margin: 0 2px;
}

.timeline-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.4);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    transition: all 0.3s ease;
}

.timeline-dot-active {
    background: #fff;
    box-shadow: 
        0 0 10px rgba(0, 212, 255, 0.8),
        0 0 20px rgba(0, 150, 255, 0.5);
    animation: dotGlow 2s ease-in-out infinite;
}

@keyframes dotGlow {
    0%, 100% {
        box-shadow: 
            0 0 10px rgba(0, 212, 255, 0.8),
            0 0 20px rgba(0, 150, 255, 0.5);
    }
    50% {
        box-shadow: 
            0 0 20px rgba(0, 212, 255, 1),
            0 0 40px rgba(0, 150, 255, 0.8),
            0 0 60px rgba(0, 212, 255, 0.4);
    }
}

/* Progress Animation Inside Segments */
.timeline-progress {
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressFlow 2s linear infinite;
}

.timeline-progress-delayed {
    animation-delay: 1s;
}

@keyframes progressFlow {
    0% {
        transform: translateX(-100%);
    }
    100% {
        transform: translateX(100%);
    }
}

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

/* Theme Section */
#theme {
    background: linear-gradient(135deg, var(--mu-green) 0%, var(--mu-blue) 100%);
    color: var(--white);
    padding: 40px 30px;
    border-radius: 12px;
    text-align: center;
    font-size: 1.8rem;
    font-weight: 700;
    margin: 30px 0;
    box-shadow: 0 8px 16px rgba(0, 121, 193, 0.3);
    line-height: 1.4;
}

/* Section Styles */
.section {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 30px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.section h2 {
    color: var(--mu-blue);
    font-size: 2rem;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 4px solid var(--mu-green);
    position: relative;
}

.section h2::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 100px;
    height: 4px;
    background: var(--mu-blue);
}

/* Overview Items */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 25px;
}

.overview-item {
    padding: 25px;
    background: linear-gradient(135deg, rgba(0, 121, 193, 0.05) 0%, rgba(128, 195, 66, 0.05) 100%);
    border-left: 5px solid var(--mu-green);
    border-radius: 8px;
    transition: all 0.3s ease;
    cursor: pointer;
}

.overview-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 12px rgba(0, 121, 193, 0.15);
    border-left-color: var(--mu-blue);
    background: linear-gradient(135deg, rgba(0, 121, 193, 0.08) 0%, rgba(128, 195, 66, 0.08) 100%);
}

.overview-item:active {
    transform: translateX(3px);
}

.overview-item .date {
    color: var(--mu-blue);
    font-weight: 700;
    font-size: 1.1rem;
    display: block;
    margin-bottom: 10px;
}

.overview-item .description {
    color: var(--dark-gray);
    line-height: 1.6;
}

/* Programme Section */
.day-section {
    margin-bottom: 40px;
}

.day-header {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 20px 25px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.day-header h3 {
    font-size: 1.5rem;
    margin: 0;
}

.day-date {
    font-size: 1.1rem;
    opacity: 0.95;
}

.programme-item {
    padding: 25px;
    margin-bottom: 15px;
    background: var(--white);
    border-radius: 8px;
    border-left: 4px solid var(--mu-green);
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.programme-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 121, 193, 0.15);
    border-left-color: var(--mu-blue);
}

.programme-header {
    display: flex;
    gap: 20px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.programme-time {
    color: var(--mu-blue);
    font-weight: 700;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.programme-time::before {
    content: '🕐';
    font-size: 1.1rem;
}

.programme-venue {
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 5px;
}

.programme-venue::before {
    content: '📍';
    font-size: 1rem;
}

.programme-language {
    background: var(--mu-green);
    color: var(--white);
    padding: 3px 12px;
    border-radius: 12px;
    font-size: 0.85rem;
    font-weight: 600;
}

.programme-title {
    font-size: 1.3rem;
    color: var(--mu-blue);
    font-weight: 700;
    margin-bottom: 12px;
    line-height: 1.4;
}

.programme-synopsis {
    color: var(--dark-gray);
    margin-bottom: 12px;
    line-height: 1.7;
}

.programme-speaker {
    color: var(--gray);
    font-style: italic;
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #e0e0e0;
}

.programme-speaker strong {
    color: var(--mu-blue);
    font-weight: 600;
}

.programme-facilitator {
    color: var(--mu-green-dark);
    font-weight: 600;
    margin-top: 8px;
}

.programme-note {
    background: #fff3cd;
    color: #856404;
    padding: 10px 15px;
    border-radius: 6px;
    margin-top: 12px;
    font-size: 0.95rem;
    border-left: 3px solid #ffc107;
}

.programme-note::before {
    content: '⚠️ ';
    margin-right: 5px;
}

/* Break Items (Tea, Lunch) - Special styling to distinguish from regular programmes */
.programme-item.break-item {
    background: linear-gradient(135deg, rgba(128, 195, 66, 0.1) 0%, rgba(0, 121, 193, 0.1) 100%);
    border-left-color: var(--mu-green);
    text-align: center;
}

.programme-item.break-item .programme-title {
    color: var(--mu-green);
}

/* Form Styles */
#registerForm {
    padding: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--mu-blue);
}

.form-group label .required {
    color: #dc3545;
    margin-left: 3px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--mu-blue);
    box-shadow: 0 0 0 3px rgba(0, 121, 193, 0.1);
}

.form-group input[readonly] {
    background-color: var(--light-gray);
    cursor: not-allowed;
}

.school-actions {
    margin-bottom: 25px;
}

/* Selected Events List Display */
.selected-events-list {
    background: #f8f9fa;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 15px 20px;
    margin-bottom: 25px;
    margin-top: 15px;
}

.selected-events-header {
    color: var(--mu-blue);
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--mu-green);
}

.selected-event-item {
    display: flex;
    gap: 10px;
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
}

.selected-event-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.event-number {
    color: var(--mu-green);
    font-weight: 700;
    font-size: 0.95rem;
    min-width: 20px;
}

.event-details {
    flex: 1;
}

.event-name {
    color: var(--dark-gray);
    font-weight: 500;
    font-size: 0.95rem;
    line-height: 1.4;
    margin-bottom: 4px;
}

.event-info {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 0.85rem;
}

.event-date {
    color: var(--mu-blue);
    font-weight: 500;
}

.event-time-small {
    color: var(--gray);
}

/* Buttons */
button {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 12px 28px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px rgba(0, 121, 193, 0.2);
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(0, 121, 193, 0.3);
}

button:active {
    transform: translateY(0);
}

button[type="button"] {
    background: var(--mu-green);
}

button[type="button"]:hover {
    background: var(--mu-green-dark);
}

.form-actions {
    display: flex;
    gap: 15px;
    align-items: center;
    margin-top: 30px;
}

.btn-save {
    background: linear-gradient(135deg, var(--mu-green) 0%, var(--mu-blue) 100%);
    padding: 14px 40px;
    font-size: 1.1rem;
}

.link-cancel {
    color: var(--gray);
    text-decoration: none;
    padding: 10px 20px;
    transition: color 0.3s ease;
}

.link-cancel:hover {
    color: var(--mu-blue);
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background-color: var(--white);
    margin: 3% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 700px;
    max-height: 85vh;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    animation: slideDown 0.3s;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 25px 30px;
    font-size: 1.5rem;
    font-weight: 700;
}

.modal-content h2 {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 20px 30px;
    margin: 0;
    font-size: 1.4rem;
}

.modal-description {
    padding: 15px 30px 0 30px;
    color: var(--gray);
    font-size: 0.9rem;
    margin: 0;
}

.modal-body {
    padding: 30px;
    max-height: calc(85vh - 180px);
    overflow-y: auto;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 25px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: var(--light-gray);
    border-radius: 8px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.checkbox-item:hover {
    background: rgba(0, 121, 193, 0.1);
    border-color: var(--mu-blue);
}

.checkbox-item input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    cursor: pointer;
    accent-color: var(--mu-blue);
}

.checkbox-item label {
    cursor: pointer;
    user-select: none;
    margin: 0;
    color: var(--dark-gray);
    font-weight: 500;
    flex: 1;
}

/* Radio Group Styling for School/Office Modal */
.radio-group {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 12px;
    margin-bottom: 25px;
}

.radio-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: var(--light-gray);
    border-radius: 8px;
    transition: all 0.2s ease;
    border: 2px solid transparent;
}

.radio-item:hover {
    background: rgba(0, 121, 193, 0.1);
    border-color: var(--mu-blue);
}

.radio-item:has(input[type="radio"]:checked) {
    background: rgba(0, 121, 193, 0.15);
    border-color: var(--mu-blue);
}

.radio-item input[type="radio"] {
    width: 20px;
    height: 20px;
    margin-right: 12px;
    cursor: pointer;
    accent-color: var(--mu-blue);
}

.radio-item input[type="radio"]:checked + label {
    color: var(--mu-blue);
    font-weight: 600;
}

.radio-item label {
    cursor: pointer;
    user-select: none;
    margin: 0;
    color: var(--dark-gray);
    font-weight: 500;
    flex: 1;
}

/* Event Modal Specific Styling */
#eventModal .checkbox-list {
    display: block;
}

#eventModal .checkbox-item {
    margin-bottom: 8px;
    background: var(--white);
    border: 1px solid #e0e0e0;
}

#eventModal .checkbox-item:hover {
    background: rgba(128, 195, 66, 0.05);
    border-color: var(--mu-green);
}

#eventModal .checkbox-item label {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

/* Ensure both modals have consistent bottom padding */
#schoolModal .modal-body {
    padding-bottom: 30px;
}

/* Event modal needs more bottom padding for better spacing */
#eventModal .modal-body {
    padding-bottom: 80px;
}

.event-day-header {
    background: linear-gradient(135deg, var(--mu-blue) 0%, var(--mu-green) 100%);
    color: var(--white);
    padding: 10px 15px;
    border-radius: 6px;
    margin-top: 15px;
    margin-bottom: 10px;
    font-weight: 600;
    font-size: 0.95rem;
}

.event-day-header:first-child {
    margin-top: 0;
}

.event-time {
    color: var(--mu-blue);
    font-size: 0.85rem;
    font-weight: 600;
}

.event-topic {
    color: var(--dark-gray);
    font-size: 0.95rem;
    line-height: 1.4;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    padding: 12px 30px;
    background: var(--light-gray);
    border-top: 1px solid #e0e0e0;
}

button.btn-ok {
    background: var(--mu-green) !important;
    padding: 12px 32px;
}

button.btn-ok:hover {
    background: var(--mu-green-dark) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(128, 195, 66, 0.3);
}

button.btn-close {
    background: #6c757d !important;
    color: var(--white);
}

button.btn-close:hover {
    background: #5a6268 !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(108, 117, 125, 0.3);
}

/* Success Message */
.success-message {
    display: none;
    background: #d4edda;
    color: #155724;
    padding: 18px 20px;
    border-radius: 8px;
    margin-bottom: 25px;
    border-left: 4px solid #28a745;
    animation: slideInRight 0.5s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

.success-message strong {
    font-weight: 700;
}

/* Loading State */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--mu-blue);
}

.loading::after {
    content: '';
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid rgba(0, 121, 193, 0.2);
    border-top-color: var(--mu-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Filter Buttons */
.filter-buttons {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--white);
    color: var(--mu-blue);
    border: 2px solid var(--mu-blue);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background: var(--mu-blue);
    color: var(--white);
}

.filter-btn.active {
    background: var(--mu-green);
    border-color: var(--mu-green);
    color: var(--white);
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Header responsive */
    .site-header {
        padding: 15px 0;
    }

    .header-container {
        padding: 0 15px;
    }

    .university-logo {
        height: 45px;
    }

    .header-register-btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }

    .banner-content h1 {
        font-size: 2rem;
    }

    .banner-content .subtitle {
        font-size: 1.2rem;
    }

    .banner-content .dates {
        font-size: 1rem;
    }

    /* Tablet Timeline Adjustments */
    .tech-date-timeline {
        flex-direction: column;
        gap: 15px;
        max-width: 400px;
    }

    .date-badge-main {
        width: 80px;
        height: 80px;
    }

    .date-day {
        font-size: 1.15rem;
    }

    .date-weekday {
        font-size: 0.85rem;
    }

    .timeline-container {
        width: 100%;
        max-width: 300px;
    }

    .timeline-date {
        font-size: 0.8rem;
        min-width: 50px;
    }

    .timeline-date .weekday {
        font-size: 0.7rem;
    }

    /* Simplify circuit lines on tablet */
    .circuit-line-3 {
        display: none;
    }

    .circuit-dot-3,
    .circuit-dot-4 {
        display: none;
    }

    #theme {
        font-size: 1.3rem;
        padding: 25px 20px;
    }

    .section {
        padding: 25px 20px;
    }

    .section h2 {
        font-size: 1.5rem;
    }

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

    .programme-header {
        flex-direction: column;
        gap: 10px;
    }

    .checkbox-group {
        grid-template-columns: 1fr;
    }

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

    .filter-btn {
        width: 100%;
    }

    .day-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .form-actions {
        flex-direction: column;
        width: 100%;
    }

    .btn-save {
        width: 100%;
    }

    /* Selected Events List on Mobile */
    .selected-events-list {
        padding: 12px 15px;
        margin-top: 12px;
    }

    .selected-events-header {
        font-size: 0.9rem;
        margin-bottom: 10px;
    }

    .selected-event-item {
        padding: 8px 0;
        gap: 8px;
    }

    .event-number {
        font-size: 0.9rem;
        min-width: 18px;
    }

    .event-name {
        font-size: 0.9rem;
    }

    .event-info {
        font-size: 0.8rem;
        gap: 8px;
    }

    /* Event Modal on Mobile */
    .modal-content {
        width: 95%;
        margin: 5% auto;
        max-height: 90vh;
    }

    .modal-content h2 {
        font-size: 1.2rem;
        padding: 15px 20px;
    }

    .modal-description {
        padding: 10px 20px 0 20px;
        font-size: 0.85rem;
    }

    .modal-body {
        padding: 20px;
        max-height: calc(90vh - 160px);
    }

    .modal-actions {
        padding: 15px 20px;
        flex-direction: row;
        gap: 10px;
    }

    .btn-ok,
    .btn-close {
        flex: 1;
        padding: 10px 20px;
        font-size: 0.95rem;
    }

    .event-day-header {
        font-size: 0.9rem;
        padding: 8px 12px;
    }

    #eventModal .checkbox-item {
        padding: 10px 12px;
    }

    .event-time {
        font-size: 0.8rem;
    }

    .event-topic {
        font-size: 0.9rem;
    }
}

@media (max-width: 480px) {
    /* Header responsive for small screens */
    .site-header {
        padding: 10px 0;
    }

    .header-container {
        padding: 0 10px;
    }

    .university-logo {
        height: 38px;
    }

    .header-register-btn {
        padding: 8px 16px;
        font-size: 0.85rem;
    }

    .container {
        padding: 15px;
    }

    .hero-banner {
        min-height: 450px;
    }

    .banner-image {
        height: 450px;
    }

    .banner-overlay {
        padding: 25px 10px;
    }

    .banner-content {
        width: 100%;
        padding: 0 5px;
    }

    .banner-content h1 {
        font-size: 1.4rem;
        margin-bottom: 12px;
        line-height: 1.3;
    }

    .banner-content .subtitle {
        font-size: 0.85rem;
        line-height: 1.5;
        margin-bottom: 15px;
        padding: 0 8px;
        word-wrap: break-word;
    }

    .banner-content .organizer {
        font-size: 0.75rem;
        padding: 0 8px;
        line-height: 1.4;
    }

    /* Mobile Timeline - Simplified */
    .tech-date-timeline {
        margin: 25px auto 20px;
        gap: 12px;
        max-width: 350px;
    }

    .date-badge-main {
        width: 70px;
        height: 70px;
    }

    .date-day {
        font-size: 1rem;
    }

    .date-weekday {
        font-size: 0.75rem;
    }

    .timeline-dates {
        gap: 15px;
        justify-content: center;
    }

    .timeline-date {
        font-size: 0.75rem;
        min-width: 45px;
    }

    .timeline-date span:first-child {
        font-size: 0.75rem;
    }

    .timeline-date .weekday {
        font-size: 0.65rem;
    }

    .timeline-bar {
        height: 10px;
    }

    .timeline-dot {
        width: 8px;
        height: 8px;
    }

    /* Disable circuit lines on mobile */
    .circuit-lines {
        display: none;
    }

    /* Simplify tech grid */
    .tech-grid {
        background-size: 30px 30px;
        opacity: 0.5;
    }

    /* Disable floating animation on mobile */
    .floating-text,
    .floating-text-delayed,
    .floating-text-delayed-most {
        animation: none;
    }

    .programme-title {
        font-size: 1.1rem;
    }
}

/* Extra small screens (iPhone SE, small phones) */
@media (max-width: 375px) {
    .header-container {
        padding: 0 8px;
    }

    .university-logo {
        height: 32px;
    }

    .header-register-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .hero-banner {
        min-height: 480px;
    }

    .banner-image {
        height: 480px;
    }

    .banner-content h1 {
        font-size: 1.3rem;
        line-height: 1.2;
    }

    .banner-content .subtitle {
        font-size: 0.8rem;
        line-height: 1.5;
    }

    .banner-content .organizer {
        font-size: 0.7rem;
    }

    .date-badge-main {
        width: 65px;
        height: 65px;
    }

    .date-day {
        font-size: 0.95rem;
    }

    .date-weekday {
        font-size: 0.7rem;
    }

    .tech-date-timeline {
        max-width: 320px;
    }

    .timeline-date {
        font-size: 0.7rem;
        min-width: 40px;
    }

    .timeline-date span:first-child {
        font-size: 0.7rem;
    }

    .timeline-date .weekday {
        font-size: 0.6rem;
    }
}

/* Scroll to Top Button */
.scroll-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    background: var(--mu-green);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(128, 195, 66, 0.4);
    transition: all 0.3s ease;
    z-index: 999;
    border: none;
    font-size: 1.5rem;
}

.scroll-top:hover {
    background: var(--mu-blue);
    transform: translateY(-5px);
}

.scroll-top.show {
    display: flex;
}