/* =========================================
   VARIABLES & DESIGN SYSTEM
   ========================================= */
:root {
    /* Colors */
    --clr-bg: #0f0f11;
    --clr-bg-alt: #16161a;
    --clr-text-main: #f8f8f8;
    --clr-text-muted: #a0a0a5;
    
    /* Brand Colors */
    --clr-ted-red: #e62b1e;
    
    /* Kaleidoscope Accents */
    --clr-accent-1: #ff0055; /* Magenta */
    --clr-accent-2: #00f0ff; /* Cyan */
    --clr-accent-3: #ffcc00; /* Yellow */
    --clr-accent-4: #7000ff; /* Purple */

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

    /* Spacing */
    --section-padding: 6rem;
    --container-max: 1200px;
}

/* Base Styles & Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--clr-bg);
    color: var(--clr-text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography Utility */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: var(--clr-text-main);
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section-padding {
    padding: var(--section-padding) 0;
}

.section-darker {
    background-color: rgba(22, 22, 26, 0.5);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-top: 1px solid rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.03);
}

/* =========================================
   AMBIENT BACKGROUND
   ========================================= */
.page-bg {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.ambient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.15;
    animation: float 20s ease-in-out infinite alternate;
}

.orb-1 { top: -10%; left: -10%; width: 50vw; height: 50vw; background: var(--clr-accent-1); }
.orb-2 { top: 40%; right: -10%; width: 40vw; height: 40vw; background: var(--clr-accent-2); animation-delay: -5s; }
.orb-3 { bottom: -20%; left: 20%; width: 60vw; height: 60vw; background: var(--clr-accent-4); animation-delay: -10s; }

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(5%, 10%) scale(1.1); }
}

.text-gradient {
    background: linear-gradient(90deg, var(--clr-accent-1), var(--clr-accent-2), var(--clr-accent-3));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.75rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background-color: var(--clr-ted-red);
    color: white;
    box-shadow: 0 4px 15px rgba(230, 43, 30, 0.3);
}

.btn-primary:hover {
    background-color: #ff3b2e;
    box-shadow: 0 6px 20px rgba(230, 43, 30, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    background-color: transparent;
    color: var(--clr-text-main);
    border: 1px solid var(--clr-text-main);
}

.btn-outline:hover {
    background-color: var(--clr-text-main);
    color: var(--clr-bg);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

.w-100 { width: 100%; }

/* =========================================
   NAVIGATION
   ========================================= */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s ease;
    padding: 1.5rem 0;
}

nav.scrolled {
    background: rgba(15, 15, 17, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.05);
}

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

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

.logo .ted {
    color: var(--clr-ted-red);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a:not(.btn) {
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

.nav-links a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 2px;
    background-color: var(--clr-ted-red);
    transition: width 0.3s ease;
}

.nav-links a:not(.btn):hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background-color: var(--clr-text-main);
    transition: 0.3s;
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 5rem;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    opacity: 0.4;
    overflow: hidden;
    background-color: var(--clr-bg);
    display: flex;
    justify-content: center;
    align-items: center;
}

.kaleidoscope-anim .k-layer {
    position: absolute;
    width: 150vw;
    height: 150vw;
    max-width: 2000px;
    max-height: 2000px;
    display: flex;
    justify-content: center;
    align-items: center;
    mix-blend-mode: screen;
}

.kaleidoscope-anim .k-layer-1 {
    animation: rotate-k 40s linear infinite;
}

.kaleidoscope-anim .k-layer-2 {
    animation: rotate-k-reverse 50s linear infinite;
}

.kaleidoscope-anim .shard {
    position: absolute;
    width: 60%;
    height: 60%;
    background-size: cover;
    mix-blend-mode: color-dodge;
    opacity: 0.8;
}

.shard-1 { clip-path: polygon(50% 50%, 100% 0, 100% 100%); background: linear-gradient(135deg, var(--clr-accent-1), var(--clr-accent-4)); transform: rotate(0deg) translateX(15%); animation: morph 12s ease-in-out infinite alternate; }
.shard-2 { clip-path: polygon(50% 50%, 100% 100%, 0 100%); background: linear-gradient(135deg, var(--clr-accent-2), var(--clr-accent-3)); transform: rotate(90deg) translateX(15%); animation: morph 15s ease-in-out infinite alternate-reverse; }
.shard-3 { clip-path: polygon(50% 50%, 0 100%, 0 0); background: linear-gradient(135deg, var(--clr-accent-3), var(--clr-ted-red)); transform: rotate(180deg) translateX(15%); animation: morph 10s ease-in-out infinite alternate; }
.shard-4 { clip-path: polygon(50% 50%, 0 0, 100% 0); background: linear-gradient(135deg, var(--clr-accent-4), var(--clr-accent-1)); transform: rotate(270deg) translateX(15%); animation: morph 18s ease-in-out infinite alternate-reverse; }

.shard-5 { clip-path: polygon(50% 50%, 80% 0, 100% 80%); background: linear-gradient(45deg, var(--clr-accent-2), var(--clr-accent-4)); transform: rotate(45deg) scale(0.8) translateY(20%); animation: pulse-k 8s ease-in-out infinite alternate; }
.shard-6 { clip-path: polygon(50% 50%, 100% 100%, 20% 100%); background: linear-gradient(45deg, var(--clr-ted-red), var(--clr-accent-1)); transform: rotate(135deg) scale(0.8) translateY(20%); animation: pulse-k 11s ease-in-out infinite alternate-reverse; }
.shard-7 { clip-path: polygon(50% 50%, 0 80%, 20% 0); background: linear-gradient(45deg, var(--clr-accent-3), var(--clr-accent-2)); transform: rotate(225deg) scale(0.8) translateY(20%); animation: pulse-k 9s ease-in-out infinite alternate; }
.shard-8 { clip-path: polygon(50% 50%, 20% 0, 100% 20%); background: linear-gradient(45deg, var(--clr-accent-1), var(--clr-accent-3)); transform: rotate(315deg) scale(0.8) translateY(20%); animation: pulse-k 13s ease-in-out infinite alternate-reverse; }

@keyframes rotate-k {
    0% { transform: rotate(0deg) scale(1); }
    50% { transform: rotate(180deg) scale(1.1); }
    100% { transform: rotate(360deg) scale(1); }
}

@keyframes rotate-k-reverse {
    0% { transform: rotate(360deg) scale(1.1); }
    50% { transform: rotate(180deg) scale(1); }
    100% { transform: rotate(0deg) scale(1.1); }
}

@keyframes morph {
    0% { border-radius: 0%; filter: hue-rotate(0deg) blur(5px); }
    50% { border-radius: 20%; filter: hue-rotate(90deg) blur(15px); }
    100% { border-radius: 0%; filter: hue-rotate(180deg) blur(5px); }
}

@keyframes pulse-k {
    0% { opacity: 0.5; filter: blur(20px); transform: scale(0.8) rotate(0deg); }
    100% { opacity: 0.9; filter: blur(5px); transform: scale(1.2) rotate(30deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
}

.tagline {
    font-size: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-bottom: 1rem;
    color: var(--clr-text-muted);
}

/* Animated Title */
.title-kaleidoscope {
    font-size: clamp(3rem, 10vw, 8rem);
    font-weight: 900;
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    display: flex;
    justify-content: center;
    gap: 0.2rem;
}

.title-kaleidoscope span {
    display: inline-block;
    transition: transform 0.3s, color 0.3s;
    background: linear-gradient(135deg, #fff, #a0a0a5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: glowText 4s infinite alternate;
}

.title-kaleidoscope span:hover {
    transform: scale(1.1) translateY(-10px);
    -webkit-text-fill-color: var(--clr-accent-2);
}

@keyframes glowText {
    0% { filter: drop-shadow(0 0 5px rgba(255,255,255,0.1)); }
    100% { filter: drop-shadow(0 0 15px rgba(0, 240, 255, 0.4)); }
}

.subtitle {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 3rem;
    color: var(--clr-text-muted);
}

.hero-date {
    font-size: 1.5rem;
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--clr-text-main);
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 0;
}

/* Countdown Timer */
.countdown-container {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 90px;
    height: 90px;
    background: rgba(22, 22, 26, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 10px 20px rgba(0,0,0,0.5);
}

.countdown-item::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
}

.countdown-item:nth-child(1)::before { background: var(--clr-accent-1); }
.countdown-item:nth-child(2)::before { background: var(--clr-accent-2); }
.countdown-item:nth-child(3)::before { background: var(--clr-accent-3); }
.countdown-item:nth-child(4)::before { background: var(--clr-accent-4); }

.countdown-value {
    font-size: 2rem;
    font-weight: 800;
    font-family: var(--font-heading);
    background: linear-gradient(135deg, #fff, #a0a0a5);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1.2;
}

.countdown-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--clr-text-muted);
}

.hero-cta {
    display: flex;
    gap: 3rem;
    justify-content: center;
    align-items: center;
}

/* =========================================
   ABOUT SECTION
   ========================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 1.5rem;
}

.text-content p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--clr-text-muted);
}

.text-content p strong {
    color: var(--clr-text-main);
}

.gfx-kaleidoscope-box {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, rgba(230, 43, 30, 0.1), rgba(0, 240, 255, 0.1));
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

.gfx-kaleidoscope-box::before {
    content: '';
    position: absolute;
    width: 200px;
    height: 200px;
    background: conic-gradient(from 0deg, var(--clr-accent-1), var(--clr-accent-2), var(--clr-accent-3), var(--clr-accent-4), var(--clr-accent-1));
    animation: spin 10s linear infinite;
    filter: blur(40px);
    border-radius: 50%;
}

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

/* =========================================
   FILM STRIP / GALLERY
   ========================================= */
.film-marquee-container {
    overflow: hidden;
    width: 100vw;
    margin-left: calc(-50vw + 50%);
    position: relative;
    padding: 2rem 0;
}

.film-marquee {
    display: inline-flex;
    background: #020202;
    padding: 45px 15px;
    gap: 15px;
    position: relative;
    animation: scroll-marquee 45s linear infinite;
    
    -webkit-mask-image: 
        linear-gradient(black, black),
        repeating-linear-gradient(90deg, transparent 0, transparent 20px, black 20px, black 45px),
        repeating-linear-gradient(90deg, transparent 0, transparent 20px, black 20px, black 45px);
    -webkit-mask-position: center, top, bottom;
    -webkit-mask-size: 100% calc(100% - 60px), 100% 25px, 100% 25px;
    -webkit-mask-repeat: no-repeat;
    mask-image: 
        linear-gradient(black, black),
        repeating-linear-gradient(90deg, transparent 0, transparent 20px, black 20px, black 45px),
        repeating-linear-gradient(90deg, transparent 0, transparent 20px, black 20px, black 45px);
    mask-position: center, top, bottom;
    mask-size: 100% calc(100% - 60px), 100% 25px, 100% 25px;
    mask-repeat: no-repeat;
}

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

@keyframes scroll-marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); } 
}

.film-img {
    height: 250px;
    width: auto;
    object-fit: cover;
    border-radius: 4px;
    transition: transform 0.5s ease;
    flex-shrink: 0;
}

.film-img:hover {
    transform: scale(1.03);
}

/* =========================================
   SPEAKERS SECTION
   ========================================= */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

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

.speaker-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.speaker-card {
    background: rgba(22, 22, 26, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    border: 1px solid rgba(255,255,255,0.05);
}

.speaker-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.5), 0 0 15px rgba(230, 43, 30, 0.2);
    border-color: rgba(230, 43, 30, 0.3);
}

.speaker-img-wrapper {
    aspect-ratio: 1;
    overflow: hidden;
}

.speaker-img-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.speaker-card:hover .speaker-img-wrapper img {
    transform: scale(1.05);
}

.speaker-info {
    padding: 1.5rem;
    text-align: center;
}

.speaker-info h3 {
    margin-bottom: 0.25rem;
}

.speaker-info .profession {
    color: var(--clr-ted-red);
    font-size: 0.9rem;
    font-weight: 500;
}

/* =========================================
   CTA / TICKETS SECTION
   ========================================= */
.cta-text {
    max-width: 600px;
    margin: 0 auto 3rem;
    color: var(--clr-text-muted);
    font-size: 1.1rem;
}

.ticket-card {
    max-width: 400px;
    margin: 0 auto;
    background: linear-gradient(145deg, rgba(28,28,34,0.6), rgba(20,20,24,0.6));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 20px;
    padding: 3rem;
    border: 1px solid rgba(255,255,255,0.1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0,0,0,0.6);
}

.ticket-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 5px;
    background: linear-gradient(90deg, var(--clr-accent-1), var(--clr-ted-red));
}

.ticket-details h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.ticket-details .price {
    font-size: 3rem;
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--clr-text-main);
    margin-bottom: 2rem;
}

.ticket-details ul {
    text-align: left;
    margin-bottom: 2rem;
}

.ticket-details ul li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    color: var(--clr-text-muted);
}

.ticket-details ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--clr-accent-2);
}

/* =========================================
   FOOTER
   ========================================= */
footer {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding: 4rem 0 2rem;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 3rem;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-brand p {
    color: var(--clr-text-muted);
    font-size: 0.9rem;
    margin-top: 0.5rem;
}

.footer-links h4 {
    margin-bottom: 1rem;
}

.social-icons {
    display: flex;
    gap: 1rem;
}

.social-icons a {
    color: var(--clr-text-muted);
}

.social-icons a:hover {
    color: var(--clr-ted-red);
}

.footer-bottom {
    text-align: center;
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 2rem;
    color: var(--clr-text-muted);
    font-size: 0.85rem;
}

/* =========================================
   ANIMATIONS & RESPONSIVE
   ========================================= */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-left {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in {
    opacity: 1;
    transform: translateY(0);
}
.fade-in-left {
    opacity: 1;
    transform: translateX(0);
}

@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 100%;
        background-color: var(--clr-bg);
        flex-direction: column;
        justify-content: center;
        transition: right 0.4s ease;
        z-index: -1;
    }

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

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }
    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

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