/* =========================================
   Professional Space Theme Custom CSS
   ========================================= */

:root {
    /* Color Palette - Deep, Cinematic Space */
    --color-bg-base: #030305;
    --color-bg-body: #030305;
    --color-bg-surface: rgba(10, 10, 15, 0.6);
    --color-bg-card: rgba(20, 20, 28, 0.4);

    --color-text-primary: #ffffff;
    --color-text-secondary: #a0a0b0;
    --color-text-muted: #6b6b80;

    --color-accent-blue: #4d8aff;
    --color-accent-purple: #9b51e0;
    --color-accent-glow: rgba(155, 81, 224, 0.4);

    --border-subtle: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.2);

    /* Typography */
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Effects */
    --blur-strength: 20px;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: auto;
    background-color: var(--color-bg-base);
}

body {
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    /* Sticky Footer Setup */
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* 3D Canvas Background */
#webgl-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    /* Always behind content */
    background: radial-gradient(circle at center, #0a0a15 0%, #030305 100%);
    pointer-events: none;
    /* Let clicks pass through */
}

/* Utility Classes */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 40px;
}

.section-padding {
    padding: 140px 0;
    position: relative;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

.gradient-text {
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent-purple) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.w-100 {
    width: 100%;
}

.mt-4 {
    margin-top: 2rem;
}

.ms-2 {
    margin-left: 0.5rem;
}

/* =========================================
   Navigation
   ========================================= */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 25px 50px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

.navbar.scrolled {
    background: rgba(3, 3, 5, 0.8);
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    padding: 20px 50px;
    border-bottom: 1px solid var(--border-subtle);
}

.brand-text {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    letter-spacing: 2px;
}

.version {
    font-size: 0.8rem;
    color: var(--color-accent-purple);
    vertical-align: super;
    margin-left: 4px;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 40px;
}

.nav-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: color 0.3s ease;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--color-accent-purple);
    transition: width 0.3s ease;
}

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

.nav-btn {
    padding: 10px 24px;
    border: 1px solid var(--border-highlight);
    background: transparent;
    color: var(--color-text-primary);
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    transition: var(--transition-smooth);
}

.nav-btn:hover {
    background: var(--color-text-primary);
    color: var(--color-bg-base);
}

.hamburger {
    display: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
}

.hero-content {
    max-width: 600px;
    margin-left: 10%;
    /* Left-aligned for premium tech feel */
    position: relative;
    z-index: 10;
}

.hero-visual {
    position: absolute;
    right: -10%;
    top: 50%;
    transform: translateY(-50%);
    width: 80%;
    height: 100%;
    z-index: 1;
    /* Drop it behind the text if they overlap, but give it full width to draw */
    pointer-events: none;
    /* Let clicks pass if needed */
}

.hero-label {
    font-family: var(--font-heading);
    color: var(--color-text-secondary);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.hero-label::before {
    margin-left: 20px;
    margin-right: 15px;
}

.main-title {
    font-size: 6.5rem;
    line-height: 1;
    margin-bottom: 12px;
    letter-spacing: -2px;
}

.hero-date {
    font-family: var(--font-heading);
    color: var(--color-accent-blue);
    font-size: 1.4rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.hero-date i {
    font-size: 1.2rem;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin-bottom: 40px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 20px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition-smooth);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-bg-base);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.btn-primary i {
    transition: transform 0.3s;
}

.btn-primary:hover {
    background: #e0e0e0;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover i {
    transform: translateX(5px);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-primary);
    border: 1px solid var(--border-highlight);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Scroll indicator */
.scroll-indicator {
    position: absolute;
    bottom: -12vh;
    left: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0.6;
}

.scroll-indicator span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    writing-mode: vertical-rl;
    margin-bottom: 15px;
}

.mouse {
    width: 20px;
    height: 30px;
    border: 1px solid var(--color-text-secondary);
    border-radius: 10px;
    position: relative;
}

.wheel {
    width: 2px;
    height: 6px;
    background: var(--color-text-primary);
    border-radius: 2px;
    position: absolute;
    top: 5px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s infinite ease-in-out;
}

@keyframes scrollWheel {
    0% {
        top: 5px;
        opacity: 1;
    }

    50% {
        top: 15px;
        opacity: 0;
    }

    100% {
        top: 5px;
        opacity: 0;
    }
}

/* =========================================
   Sections Core
   ========================================= */
.section-header {
    margin-bottom: 60px;
}

.section-header.center {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.section-title {
    font-size: 3rem;
    letter-spacing: -1px;
    margin-bottom: 15px;
}

.line-decorator {
    width: 60px;
    height: 2px;
    background: var(--color-accent-purple);
}

.center-line {
    margin: 0 auto;
}

/* =========================================
   About Section
   ========================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.about-image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 20px;
    width: 100%;
    aspect-ratio: 1;
}

.grid-item {
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    border: 1px solid var(--border-subtle);
    transition: var(--transition-smooth);
    background: var(--color-bg-card);
}

.grid-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    display: block;
}

.grid-label {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 15px;
    background: linear-gradient(to top, rgba(3, 3, 5, 0.9) 0%, transparent 100%);
    color: var(--color-text-primary);
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 2px;
    z-index: 2;
}

.grid-item:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent-purple);
    box-shadow: 0 10px 30px rgba(155, 81, 224, 0.2);
}

.grid-item:hover img {
    transform: scale(1.1);
}

@media (max-width: 768px) {
    .about-image-grid {
        gap: 12px;
    }

    .grid-label {
        font-size: 0.75rem;
        padding: 10px;
    }
}

.subsection-title {
    font-size: 1.8rem;
    margin-bottom: 24px;
    color: var(--color-text-primary);
}

.body-text {
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    font-size: 1.05rem;
}

.metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-subtle);
}

.metric-item {
    display: flex;
    flex-direction: column;
}

.metric-number {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
    margin-bottom: 10px;
}

.metric-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-accent-purple);
}

/* =========================================
   Events Section
   ========================================= */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.tech-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 8px;
    padding: 50px 40px;
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.tech-card::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, transparent 100%);
    opacity: 0;
    transition: opacity 0.4s;
    pointer-events: none;
}

.tech-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: var(--color-accent-purple);
    box-shadow:
        0 15px 45px rgba(0, 0, 0, 0.6),
        0 0 25px rgba(155, 81, 224, 0.4),
        inset 0 0 15px rgba(155, 81, 224, 0.1);
}

.tech-card:hover::after {
    opacity: 1;
}

.card-icon {
    font-size: 2.5rem;
    color: var(--color-text-primary);
    margin-bottom: 30px;
    opacity: 0.8;
}

.tech-card h3 {
    font-size: 1.4rem;
    margin-bottom: 15px;
    letter-spacing: 0.5px;
}

.tech-card p {
    color: var(--color-text-secondary);
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.card-link {
    display: inline-flex;
    align-items: center;
    color: var(--color-accent-blue);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition-smooth);
}

.card-link i {
    margin-left: 8px;
    transition: transform 0.3s;
}

.card-link:hover {
    color: var(--color-text-primary);
}

.card-link:hover i {
    transform: translateX(5px);
}

/* =========================================
   Star Guest Section
   ========================================= */
.guest-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

@media (min-width: 900px) {
    .guest-grid.guest-reversed .guest-image-wrapper {
        order: 2;
    }

    .guest-grid.guest-reversed .guest-content {
        order: 1;
    }
}

.guest-image-wrapper {
    position: relative;
    border-radius: 12px;
    padding: 15px;
    background: var(--color-bg-card);
    border: 1px solid var(--border-subtle);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.guest-image {
    width: 100%;
    height: auto;
    border-radius: 8px;
    display: block;
    position: relative;
    z-index: 2;
    filter: grayscale(20%) contrast(1.1);
    transition: var(--transition-smooth);
}

.guest-image-wrapper:hover .guest-image {
    filter: grayscale(0%) contrast(1.05);
    transform: scale(1.02);
}

.guest-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, var(--color-accent-purple) 0%, transparent 70%);
    filter: blur(40px);
    opacity: 0.3;
    z-index: 1;
    pointer-events: none;
}

.guest-subtitle {
    font-size: 1.1rem;
    color: var(--color-accent-blue);
    margin-bottom: 20px;
    font-family: var(--font-heading);
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* =========================================
   Previous Memory Section
   ========================================= */
.memory-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.memory-item {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    aspect-ratio: 4/3;
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
}

.memory-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
    filter: brightness(0.8) contrast(1.1);
}

.memory-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(3, 3, 5, 0.9) 0%, rgba(155, 81, 224, 0.4) 50%, transparent 100%);
    opacity: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.4s ease;
}

.memory-overlay i {
    color: var(--color-text-primary);
    font-size: 2.5rem;
    transform: scale(0.5);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.memory-item:hover img {
    transform: scale(1.08);
    filter: brightness(1) contrast(1.1);
}

.memory-item:hover .memory-overlay {
    opacity: 1;
}

.memory-item:hover .memory-overlay i {
    transform: scale(1);
}

/* Make a couple of items span differently for a masonry look */
@media (min-width: 900px) {
    .memory-item:nth-child(1) {
        grid-column: span 2;
        grid-row: span 2;
        aspect-ratio: auto;
    }

    .memory-item:nth-child(4) {
        grid-column: span 2;
        aspect-ratio: 21/9;
    }
}

/* =========================================
   Sponsors Marquee Section
   ========================================= */
.sponsors {
    overflow: hidden;
    padding: 60px 0;
    background: linear-gradient(to bottom, transparent, rgba(10, 10, 15, 0.4), transparent);
}

.marquee-container {
    width: 100vw;
    overflow: hidden;
    white-space: nowrap;
    position: relative;
    /* gradient masks for smooth fade in/out at edges */
    -webkit-mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
    mask-image: linear-gradient(to right, transparent, black 10%, black 90%, transparent);
}

.marquee-content {
    display: inline-block;
    animation: marquee 30s linear infinite;
}

.marquee-container:hover .marquee-content {
    animation-play-state: paused;
}

.marquee-item {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    margin: 0 40px;
    font-family: var(--font-heading);
    font-size: 2rem;
    color: var(--color-text-muted);
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.marquee-item i {
    font-size: 2.5rem;
}

.marquee-item:hover {
    color: var(--color-text-primary);
    text-shadow: 0 0 20px var(--color-accent-blue);
    transform: scale(1.1);
}

@keyframes marquee {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(-50%);
    }
}

/* =========================================
   Panel Discussion Section
   ========================================= */
.panel-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.panel-card {
    background: var(--color-bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    backdrop-filter: blur(var(--blur-strength));
    -webkit-backdrop-filter: blur(var(--blur-strength));
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.panel-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent-purple);
    box-shadow: 0 15px 40px rgba(155, 81, 224, 0.2);
}

.panel-image-wrapper {
    position: relative;
    width: 150px;
    height: 150px;
    margin: 0 auto 20px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--color-accent-blue);
    box-shadow: 0 0 20px rgba(77, 138, 255, 0.3);
}

.panel-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.panel-card:hover .panel-image {
    transform: scale(1.1);
}

.panel-overlay {
    position: absolute;
    inset: 0;
    background: rgba(3, 3, 5, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.panel-card:hover .panel-overlay {
    opacity: 1;
}

.social-icon {
    color: var(--color-text-primary);
    font-size: 1.2rem;
    background: rgba(255, 255, 255, 0.1);
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    text-decoration: none;
    transition: all 0.3s ease;
    transform: translateY(10px);
}

.panel-card:hover .social-icon {
    transform: translateY(0);
}

.social-icon:hover {
    background: var(--color-accent-blue);
    color: #fff;
    box-shadow: 0 0 15px var(--color-accent-blue);
}

.panel-info h3 {
    font-size: 1.3rem;
    margin-bottom: 5px;
    color: var(--color-text-primary);
}

.panel-info p {
    font-size: 0.95rem;
    color: var(--color-accent-purple);
    font-weight: 500;
}

/* Panel Date Box and Flow Lines */
.panel-date-container {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 60px;
    width: 100%;
    position: relative;
}

.flow-line {
    flex-grow: 1;
    height: 2px;
    position: relative;
}

/* Glow on the lines */
.flow-line::after {
    content: '';
    position: absolute;
    top: -2px;
    left: 0;
    right: 0;
    height: 6px;
    background: inherit;
    filter: blur(4px);
    opacity: 0.6;
}

.flow-line.left {
    background: linear-gradient(90deg, transparent 10%, var(--color-accent-blue) 100%);
    margin-right: 20px;
}

.flow-line.right {
    background: linear-gradient(90deg, var(--color-accent-blue) 0%, transparent 90%);
    margin-left: 20px;
}

/* Vertical connections to the first and last cards */
.flow-line.left::before {
    content: '';
    position: absolute;
    left: 15%;
    /* Approximates the center point of the first card */
    bottom: 0;
    width: 2px;
    height: 50px;
    background: linear-gradient(0deg, var(--color-accent-blue) 0%, transparent 100%);
}

.flow-line.right::before {
    content: '';
    position: absolute;
    right: 15%;
    /* Approximates the center point of the last card */
    bottom: 0;
    width: 2px;
    height: 50px;
    background: linear-gradient(0deg, var(--color-accent-blue) 0%, transparent 100%);
}

.date-box {
    background: rgba(15, 15, 20, 0.8);
    border: 1px solid var(--color-accent-purple);
    padding: 15px 40px;
    border-radius: 12px;
    box-shadow: 0 0 25px rgba(155, 81, 224, 0.3), inset 0 0 15px rgba(155, 81, 224, 0.1);
    text-align: center;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 2;
    position: relative;
}

.date-day {
    display: block;
    font-size: 2.2rem;
    font-family: var(--font-heading);
    font-weight: 700;
    color: var(--color-text-primary);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
    line-height: 1;
}

.date-month {
    display: block;
    font-size: 1rem;
    color: var(--color-accent-blue);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-top: 5px;
    font-weight: 500;
}

/* Adjust vertical lines on mobile so they don't look broken when grid wraps */
@media (max-width: 768px) {

    .flow-line.left::before,
    .flow-line.right::before {
        display: none;
    }
}

/* =========================================
   Event Modal
   ========================================= */
.event-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.4s ease;
    padding: 20px;
}

.event-modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(3, 3, 5, 0.85);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
}

.modal-content-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-accent-blue);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    transform: scale(0.95) translateY(20px);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.event-modal.active .modal-content-wrapper {
    transform: scale(1) translateY(0);
}

.close-modal-btn {
    position: absolute;
    top: 15px;
    right: 15px;
    background: rgba(0, 0, 0, 0.5);
    border: 1px solid var(--border-subtle);
    color: #fff;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    z-index: 10;
    transition: background 0.3s, transform 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
}

.close-modal-btn:hover {
    background: var(--color-accent-purple);
    transform: rotate(90deg);
}

.modal-image-container {
    width: 100%;
    height: 300px;
    position: relative;
    border-bottom: 2px solid var(--color-accent-purple);
}

.modal-image-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.modal-image-container::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(20, 20, 28, 1), transparent 90%);
}

.modal-text-content {
    padding: 30px 40px;
    background: linear-gradient(to bottom, rgba(20, 20, 28, 1), rgba(10, 10, 15, 0.9));
}

.modal-text-content h3 {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    margin-bottom: 5px;
    text-shadow: 0 0 10px rgba(77, 138, 255, 0.5);
}

.modal-text-content h4 {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.modal-text-content p {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: 35px;
    font-size: 1.05rem;
}

.modal-actions {
    display: flex;
    gap: 15px;
}

@media (max-width: 768px) {
    .modal-image-container {
        height: 200px;
    }

    .modal-text-content {
        padding: 25px 20px;
    }

    .modal-actions {
        flex-direction: column;
    }

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

/* =========================================
   Events Section & Filter Controls
   ========================================= */
.filter-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    background: transparent;
    color: var(--color-text-muted);
    border: 1px solid var(--border-subtle);
    padding: 10px 24px;
    border-radius: 30px;
    font-size: 0.95rem;
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.filter-btn:hover {
    color: var(--color-text-primary);
    border-color: var(--color-accent-blue);
    box-shadow: 0 0 15px rgba(77, 138, 255, 0.2);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--color-accent-purple) 0%, var(--color-accent-blue) 100%);
    color: var(--color-text-primary);
    border-color: transparent;
    box-shadow: 0 0 20px rgba(155, 81, 224, 0.4);
}

.event-catalog {
    /* Transitions for filtering */
    min-height: 400px;
}

.event-item {
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* =========================================
   Registration Section
   ========================================= */
.registration-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.form-panel {
    background: var(--color-bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 12px;
    padding: 60px;
    backdrop-filter: blur(var(--blur-strength));
}

.form-header {
    margin-bottom: 40px;
}

.form-header h2 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.form-header p {
    color: var(--color-text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

.input-wrapper {
    position: relative;
}

.input-wrapper label {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-secondary);
    margin-bottom: 12px;
}

.input-wrapper input,
.input-wrapper select {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--border-subtle);
    color: var(--color-text-primary);
    padding: 10px 0;
    font-family: var(--font-body);
    font-size: 1rem;
    transition: var(--transition-smooth);
}

.input-wrapper input:focus,
.input-wrapper select:focus {
    outline: none;
}

.input-wrapper select {
    appearance: none;
    cursor: pointer;
}

/* Custom focus line animation */
.input-line {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--color-accent-purple);
    transition: width 0.4s ease;
}

.input-wrapper input:focus~.input-line,
.input-wrapper select:focus~.input-line {
    width: 100%;
}

select option {
    background: var(--color-bg-base);
    color: var(--color-text-primary);
}

.form-status {
    margin-top: 20px;
    text-align: center;
    font-size: 0.95rem;
}

/* =========================================
   Footer
   ========================================= */
.site-footer {
    border-top: 1px solid var(--border-subtle);
    padding-top: 60px;
    padding-bottom: 40px;
    /* Base padding */
    background: var(--color-bg-base);
    margin-top: auto;
    position: relative;
    z-index: 10;
}

.footer-grid {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
}

.footer-brand h3 {
    font-size: 1.5rem;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.footer-brand p {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

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

.social-icon {
    width: 40px;
    height: 40px;
    border: 1px solid var(--border-subtle);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: var(--transition-smooth);
}

.social-icon:hover {
    border-color: var(--color-text-primary);
    color: var(--color-text-primary);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid var(--border-subtle);
    padding: 25px 0;
}

.flex-between {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.copyright,
.credits {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* =========================================
   Responsive Adjustments
   ========================================= */
@media (max-width: 1024px) {
    .main-title {
        font-size: 5rem;
    }

    .about-grid {
        gap: 40px;
    }

    .hero-visual {
        width: 40%;
        right: 0;
        opacity: 0.5;
    }

    .guest-grid {
        gap: 40px;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 20px;
    }

    .nav-links {
        display: none;
    }

    .hamburger {
        display: block;
        z-index: 101;
    }

    .nav-links {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background: rgba(3, 3, 5, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        transition: var(--transition-smooth);
        z-index: 100;
    }

    .nav-links.active {
        right: 0;
    }

    .nav-links li {
        margin: 20px 0;
    }

    .nav-link {
        font-size: 1.2rem;
    }

    .hero-content {
        margin-left: 0;
        padding: 0 20px;
        text-align: center;
        max-width: 100%;
    }

    .hero-label {
        justify-content: center;
    }

    .hero-actions {
        justify-content: center;
        flex-direction: column;
    }

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

    .guest-image-wrapper {
        margin-bottom: 30px;
    }

    .main-title {
        font-size: 4rem;
    }

    .hero-description {
        margin: 0 auto 30px;
    }

    .hero-visual {
        display: none;
    }

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

    .abstract-shape {
        width: 60%;
        margin: 0 auto;
    }

    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        text-align: center;
    }

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

    .panel-grid {
        grid-template-columns: repeat(5, 1fr);
        gap: 10px;
        overflow-x: auto;
        padding-bottom: 20px;
        justify-content: flex-start;
    }

    .panel-card {
        min-width: 200px;
    }

    .form-panel {
        padding: 30px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .footer-grid {
        flex-direction: column;
        gap: 30px;
        text-align: center;
        align-items: center;
    }

    .flex-between {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }
}