/* RESET & CORE */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #888888;
    --accent: #333333;
    --font-heading: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    overflow-x: hidden;
    overscroll-behavior-y: none;
    /* Prevent bounce styling on Mac */
}

/* LOADING SCREEN */
.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-color);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease-out;
}

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

.loader-content {
    text-align: center;
    width: 300px;
}

.loader-text {
    font-family: var(--font-heading);
    letter-spacing: 2px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    display: block;
}

.progress-bar {
    width: 100%;
    height: 2px;
    background: #111;
    position: relative;
    overflow: hidden;
}

.progress-fill {
    width: 0%;
    height: 100%;
    background: #fff;
    transition: width 0.1s linear;
}

/* SCROLL STRUCTURE */
.scroll-container {
    height: 400vh;
    /* Determines the scroll length */
    position: relative;
}

.sticky-wrapper {
    position: sticky;
    top: 0;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* CINEMATIC LIGHTING */
.ambient-light {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 150vw;
    height: 150vh;
    background: radial-gradient(circle, rgba(60, 70, 90, 0.1) 0%, rgba(5, 5, 5, 0) 60%);
    opacity: 0.5;
    transition: opacity 0.1s linear;
    /* JS driven */
    pointer-events: none;
    z-index: 0;
    mix-blend-mode: screen;
}

.vignette {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle, transparent 50%, rgba(0, 0, 0, 0.8) 120%);
    pointer-events: none;
    z-index: 2;
    /* Above canvas */
}

/* Add a subtle noise texture to the whole body for filmic look */
body::after {
    content: "";
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.05'/%3E%3C/svg%3E");
    pointer-events: none;
    z-index: 10;
    opacity: 0.35;
    mix-blend-mode: overlay;
}

/* CANVAS */
canvas {
    display: block;
    position: relative;
    z-index: 1;
    /* Above light, below vignette */
    /* Canvas size is handled by JS logic for responsiveness, 
       but we ensure it maxes out correctly */
    max-width: 100vw;
    max-height: 100vh;
}

/* OVERLAYS */
.overlay-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 3;
    /* Above everything */
}

.text-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 1s cubic-bezier(0.16, 1, 0.3, 1), transform 1s cubic-bezier(0.16, 1, 0.3, 1);
    /* Improved easing */
}

.text-overlay.active {
    opacity: 1;
    transform: translateY(0);
}

.text-overlay h1 {
    font-family: var(--font-heading);
    font-size: clamp(3rem, 7vw, 7rem);
    font-weight: 500;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    color: #ffffff;
    text-shadow: 0 0 30px rgba(255, 255, 255, 0.2);
    /* Optical glow */
}

.text-overlay h2 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 400;
    margin-bottom: 0.5rem;
    color: #f0f0f0;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.text-overlay p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 400px;
    line-height: 1.6;
}

.text-overlay.center {
    align-items: center;
    text-align: center;
}

.text-overlay.left {
    align-items: flex-start;
    padding-left: 10vw;
}

.text-overlay.right {
    align-items: flex-end;
    padding-right: 10vw;
    text-align: right;
}

.cta-btn {
    margin-top: 3rem;
    padding: 1.2rem 3.5rem;
    background: rgba(255, 255, 255, 0.03);
    /* Extremely subtle glass */
    border: 1px solid rgba(255, 255, 255, 0.4);
    backdrop-filter: blur(10px);
    color: #fff;
    font-family: var(--font-heading);
    font-size: 0.9rem;
    font-weight: 600;
    letter-spacing: 2px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    pointer-events: auto;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.cta-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 0%;
    height: 100%;
    background: #fff;
    transition: width 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: -1;
}

.cta-btn:hover {
    color: #000;
    border-color: #fff;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.4);
    /* Premium Glow */
}

.cta-btn:hover::before {
    width: 100%;
}

.spacer-footer {
    height: 20vh;
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
    font-size: 0.8rem;
    letter-spacing: 2px;
}