/* CSS Variables */
:root {
    --primary-orange: #F7931E;
    --primary-black: #0a0a0a;
    --secondary-black: #1a1a1a;
    --text-white: #ffffff;
    --text-gray: #a0a0a0;
    --glass-border: rgba(255, 255, 255, 0.1);
    --terminal-font: 'Courier New', Courier, monospace;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--primary-black);
    color: var(--text-white);
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* --- Loader Styles --- */
#loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: #000;
    z-index: 9999;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    /* Text at bottom like a terminal */
    align-items: flex-start;
    font-family: var(--terminal-font);
    overflow: hidden;
    transition: opacity 0.8s ease-out;
}

.loader-text {
    color: var(--primary-orange);
    font-size: 1.1rem;
    line-height: 1.5;
    text-shadow: 0 0 5px rgba(247, 147, 30, 0.5);
    white-space: pre-wrap;
    /* Preserve formatting */
}

.blink-cursor::after {
    content: '_';
    animation: blink 1s step-end infinite;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

.hidden {
    opacity: 0;
    pointer-events: none;
}

.container {
    display: flex;
    width: 100%;
    height: 100vh;
    max-width: 1920px;
    margin: 0 auto;
    background: var(--primary-black);
    position: relative;
    opacity: 0;
    /* Hidden initially, revealed by JS */
    transition: opacity 1s ease-in;
}

.container.visible {
    opacity: 1;
}

/* --- Left Section: Brand --- */
.brand-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 4rem;
    position: relative;
    border-right: 2px solid var(--primary-orange);
    background: radial-gradient(circle at top left, #1f1f1f 0%, var(--primary-black) 60%);
    z-index: 10;
    overflow: hidden;
    /* Contain the matrix rain */
}

/* --- Interactive Canvas (Matrix Rain) --- */
#particle-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: 0.25;
    /* Subtle background */
    pointer-events: none;
}

/* Enhanced logo container visibility */
.logo-container {
    margin-bottom: 3rem;
    position: relative;
    background: radial-gradient(closest-side, rgba(255, 255, 255, 0.12), transparent);
    padding: 2rem;
    border-radius: 50%;
}

.brand-logo {
    max-width: 300px;
    height: auto;
    display: block;
    filter: brightness(1.3) contrast(1.1) drop-shadow(0 0 1px rgba(255, 255, 255, 0.4)) drop-shadow(0 0 20px rgba(247, 147, 30, 0.2));
}

.brand-logo:after {
    content: "BSides Noida";
    display: block;
    font-size: 2rem;
    color: var(--primary-orange);
}

.content-wrapper {
    text-align: left;
    max-width: 500px;
    width: 100%;
    z-index: 10;
    /* Above canvas */
    position: relative;
}

.coming-soon {
    font-size: 4rem;
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
    color: var(--text-white);
}

.coming-soon .dot {
    color: var(--primary-orange);
}

.subtext {
    font-size: 1.25rem;
    color: var(--text-gray);
    font-weight: 300;
    max-width: 400px;
}

/* --- Right Section: Video --- */
.video-section {
    flex: 1;
    position: relative;
    overflow: hidden;
    background-color: #000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 5;
    background: transparent;
}

.video-container {
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.video-container iframe {
    width: 100vw;
    height: 56.25vw;
    min-height: 100vh;
    min-width: 177.77vh;
    position: absolute;
    top: 50%;
    left: 50%;
    /* Scalling up to 1.35 to hide the YouTube Title Bar and controls completely */
    transform: translate(-50%, -50%) scale(1.35);
    opacity: 0.8;
}

/* --- Unmute Button --- */
.audio-btn {
    position: absolute;
    bottom: 6rem;
    right: 3rem;
    z-index: 20;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    color: var(--text-white);
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    letter-spacing: 0.05em;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    outline: none;
}

.audio-btn:hover {
    background: var(--primary-orange);
    color: var(--primary-black);
    border-color: var(--primary-orange);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(247, 147, 30, 0.4);
}

.icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
}

.icon svg {
    width: 20px;
    height: 20px;
}

.audio-btn .icon-sound {
    display: none;
}

.audio-btn .icon-mute {
    display: block;
}

.audio-btn .label::after {
    content: "UNMUTE";
}

.audio-btn.active .icon-sound {
    display: block;
}

.audio-btn.active .icon-mute {
    display: none;
}

.audio-btn.active .label::after {
    content: "MUTE";
}

.audio-btn.active {
    background: rgba(255, 255, 255, 0.9);
    color: var(--primary-black);
}

/* --- Social Footer --- */
.social-footer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(8px);
    border-top: 1px solid var(--glass-border);
    z-index: 100;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.social-link {
    color: var(--text-white);
    font-size: 1.25rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.social-link i {
    color: #ffffff;
}

.social-link:hover {
    color: var(--primary-black);
    background: var(--primary-orange);
    transform: translateY(-3px);
}

.social-link:hover i {
    color: var(--primary-black);
}

.copyright {
    color: var(--text-gray);
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    font-weight: 300;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    body {
        height: auto;
        overflow-y: auto;
    }

    .container {
        flex-direction: column;
        height: auto;
        padding-bottom: 80px;
    }

    .brand-section {
        min-height: 50vh;
        border-right: none;
        border-bottom: 2px solid var(--primary-orange);
        padding: 3rem 1.5rem;
        align-items: flex-start;
    }

    .brand-logo {
        max-width: 180px;
    }

    .coming-soon {
        font-size: 2.5rem;
    }

    .video-section {
        height: 50vh;
        min-height: 400px;
    }

    .video-container iframe {
        /* On mobile, standard covering is usually enough, but we keep scale to hide utils */
        transform: translate(-50%, -50%) scale(1.4);
    }

    .audio-btn {
        bottom: 5rem;
        right: 1.5rem;
        padding: 0.6rem 1.2rem;
    }

    .social-footer {
        flex-direction: column;
        gap: 0.5rem;
        padding: 1rem;
    }
}