/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --black: #0a0a0a;
    --deep-black: #141410;
    --dark: #1a1a1a;
    --dark-olive: #2a2a24;
    --cream: #f5f0e0;
    --tan: #e0d4b0;
    --red: #c0392b;
    --blue: #2980b9;
}

html, body {
    width: 100%;
    overflow-x: hidden;
    background: var(--deep-black);
    color: var(--cream);
    font-family: 'Inter', sans-serif;
    font-weight: 300;
    font-size: 16px;
    line-height: 1.6;
}

.svg-filters {
    position: absolute;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* Scan Lines Overlay */
.scan-lines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1000;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(0, 0, 0, 0.15) 2px,
        rgba(0, 0, 0, 0.15) 4px
    );
}

/* Grain Overlay */
.grain-overlay {
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    pointer-events: none;
    z-index: 999;
    opacity: 0.08;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='200' height='200'%3E%3Cfilter id='g'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='4'/%3E%3C/filter%3E%3Crect width='200' height='200' filter='url(%23g)' opacity='1'/%3E%3C/svg%3E");
    animation: grainShift 0.5s steps(4) infinite;
}

@keyframes grainShift {
    0% { transform: translate(0, 0); }
    25% { transform: translate(-5%, -5%); }
    50% { transform: translate(5%, 2%); }
    75% { transform: translate(-2%, 5%); }
    100% { transform: translate(0, 0); }
}

/* Signal Layers */
.signal-layer {
    width: 100vw;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.layer-content {
    width: 100%;
    max-width: 900px;
    padding: 2rem;
    text-align: center;
}

/* Layer backgrounds */
.layer-1 {
    background: var(--black);
}

.layer-2 {
    background: var(--dark);
    border-top: 2px solid var(--dark-olive);
}

.layer-3 {
    background: var(--deep-black);
    border-top: 2px solid var(--dark-olive);
}

.layer-4 {
    background: var(--dark);
    border-top: 2px solid var(--dark-olive);
}

.layer-5 {
    background: var(--black);
    border-top: 2px solid var(--dark-olive);
}

/* Glitch Text */
.glitch-text {
    font-family: 'Commissioner', sans-serif;
    font-weight: 700;
    font-size: clamp(2.8rem, 7vw, 6.5rem);
    letter-spacing: 0.04em;
    line-height: 1.05;
    color: var(--cream);
    position: relative;
    display: inline-block;
}

.glitch-text::before,
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.7;
}

.glitch-text::before {
    color: var(--red);
    clip-path: inset(0 0 60% 0);
    transform: translateX(-3px);
    animation: glitchShift1 3s infinite steps(2);
}

.glitch-text::after {
    color: var(--blue);
    clip-path: inset(60% 0 0 0);
    transform: translateX(3px);
    animation: glitchShift2 3s infinite steps(2);
}

@keyframes glitchShift1 {
    0%, 90% { transform: translateX(-3px); }
    92% { transform: translateX(2px) skewX(-2deg); }
    94% { transform: translateX(-1px); }
    100% { transform: translateX(-3px); }
}

@keyframes glitchShift2 {
    0%, 88% { transform: translateX(3px); }
    90% { transform: translateX(-3px) skewX(1deg); }
    95% { transform: translateX(2px); }
    100% { transform: translateX(3px); }
}

/* Signal Status */
.signal-status {
    font-family: 'Space Mono', monospace;
    font-size: 1rem;
    color: var(--blue);
    margin-top: 2rem;
    letter-spacing: 0.2em;
    animation: blink 1.5s steps(1) infinite;
}

@keyframes blink {
    0%, 70% { opacity: 1; }
    71%, 100% { opacity: 0; }
}

/* Tracking Bar */
.tracking-bar {
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, transparent 0%, var(--blue) 20%, var(--cream) 50%, var(--blue) 80%, transparent 100%);
    margin-top: 3rem;
    animation: trackingSlide 4s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes trackingSlide {
    0%, 100% { transform: translateX(-30%); }
    50% { transform: translateX(30%); }
}

/* Section Titles */
.section-title {
    font-size: clamp(2rem, 5vw, 4.5rem);
    margin-bottom: 2rem;
}

/* Mono Text */
.mono-text {
    font-family: 'Space Mono', monospace;
    font-size: 0.9rem;
    color: var(--tan);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

/* Recycling Symbol */
.recycling-symbol {
    margin-top: 3rem;
}

.recycle-svg {
    width: 120px;
    height: 120px;
    opacity: 0.7;
}

/* Edu Content */
.edu-content {
    margin-top: 1rem;
}

/* Cycle Steps */
.cycle-steps {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
    align-items: center;
}

.step {
    display: flex;
    align-items: center;
    gap: 2rem;
    padding: 1rem 2rem;
    border: 1px solid var(--dark-olive);
    width: 100%;
    max-width: 400px;
    transition: border-color 0.3s, background 0.3s;
}

.step:hover {
    border-color: var(--blue);
    background: rgba(41, 128, 185, 0.05);
}

.step-number {
    font-family: 'Commissioner', sans-serif;
    font-weight: 700;
    font-size: 2rem;
    color: var(--blue);
}

.step-label {
    font-family: 'Space Mono', monospace;
    font-size: 1rem;
    letter-spacing: 0.15em;
    color: var(--cream);
}

/* Degradation Bars */
.degradation-bars {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    width: 100%;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.bar {
    height: 36px;
    background: linear-gradient(90deg, var(--blue), var(--red));
    width: var(--width);
    display: flex;
    align-items: center;
    padding-left: 1rem;
    transition: width 1s ease-out;
    position: relative;
}

.bar span {
    font-family: 'Space Mono', monospace;
    font-size: 0.75rem;
    color: var(--cream);
    white-space: nowrap;
}

/* Static Block */
.static-block {
    width: 200px;
    height: 150px;
    margin: 2rem auto;
    background: repeating-linear-gradient(
        0deg,
        var(--dark-olive) 0px,
        var(--cream) 1px,
        var(--dark) 2px,
        var(--black) 3px
    );
    animation: staticNoise 0.1s steps(5) infinite;
    opacity: 0.5;
}

@keyframes staticNoise {
    0% { background-position: 0 0; }
    20% { background-position: -5px 3px; }
    40% { background-position: 3px -2px; }
    60% { background-position: -3px 5px; }
    80% { background-position: 5px -3px; }
    100% { background-position: 0 0; }
}

/* Timestamp */
.timestamp {
    font-family: 'Space Mono', monospace;
    font-size: 0.7rem;
    color: var(--tan);
    letter-spacing: 0.1em;
    margin-top: 2rem;
    opacity: 0.6;
}

/* Layer entrance animations */
.signal-layer .layer-content {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.signal-layer.visible .layer-content {
    opacity: 1;
    transform: translateY(0);
}