/* ===========================
   lower.bar - styles.css
   Swiss-Glitch Descent Design
   =========================== */

/* --- CSS Custom Properties --- */
:root {
    --burnt-orange: #C4510A;
    --amber: #E8862A;
    --dark-ground: #1A1410;
    --warm-cream: #F5EDE0;
    --rust: #8B3A0F;
    --sienna: #B07850;
    --glitch-cyan: #00D4CC;
    --warm-black: #2A2018;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.2rem);
    line-height: 1.65;
    color: var(--warm-black);
    background-color: var(--warm-cream);
    overflow-x: hidden;
}

/* --- Grid Overlay --- */
.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    background-image:
        linear-gradient(to right, rgba(196,81,10,0.07) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(196,81,10,0.07) 1px, transparent 1px);
    background-size: calc(100% / 12) 24px;
    z-index: 1;
}

.grid-overlay--dark {
    background-image:
        linear-gradient(to right, rgba(196,81,10,0.05) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(196,81,10,0.05) 1px, transparent 1px);
}

/* --- Binary Strip --- */
.binary-strip {
    position: absolute;
    top: 0;
    left: 24px;
    width: 16px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        var(--burnt-orange) 0px,
        var(--burnt-orange) 4px,
        var(--dark-ground) 4px,
        var(--dark-ground) 16px,
        var(--burnt-orange) 16px,
        var(--burnt-orange) 28px,
        var(--dark-ground) 28px,
        var(--dark-ground) 32px
    );
    opacity: 0.6;
}

.binary-strip--cards {
    left: 16px;
    opacity: 0.4;
}

/* ===========================
   SECTION 1: Opening
   =========================== */
.section-opening {
    position: relative;
    width: 100%;
    height: 100vh;
    background-color: var(--warm-cream);
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
    padding: 8vh 8vw;
    overflow: hidden;
}

.hero-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: clamp(2.8rem, 8vw, 5.5rem);
    letter-spacing: -0.02em;
    color: var(--warm-black);
    position: relative;
    z-index: 5;
    will-change: transform;
    transition: transform 0.05s linear;
}

.hero-title::after {
    content: '';
    position: absolute;
    right: -8px;
    top: 50%;
    width: 2px;
    height: 110%;
    transform: translateY(-50%);
    background-color: var(--glitch-cyan);
    opacity: 0.5;
}

.tagline {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 400;
    font-style: italic;
    font-size: clamp(1rem, 2.5vw, 1.5rem);
    letter-spacing: 0.01em;
    color: var(--sienna);
    margin-top: 1.5rem;
    max-width: 38em;
    position: relative;
    z-index: 5;
}

.glitch-band {
    position: absolute;
    top: 60%;
    left: 0;
    width: 100%;
    height: 8px;
    z-index: 3;
    overflow: hidden;
    background: linear-gradient(
        90deg,
        var(--burnt-orange) 0%,
        var(--glitch-cyan) 20%,
        var(--amber) 40%,
        transparent 41%,
        transparent 55%,
        var(--glitch-cyan) 56%,
        var(--rust) 70%,
        var(--burnt-orange) 100%
    );
    mix-blend-mode: difference;
}

.glitch-band::before {
    content: '';
    position: absolute;
    top: 0;
    left: -10%;
    width: 120%;
    height: 100%;
    background: repeating-linear-gradient(
        90deg,
        transparent 0px,
        transparent 12px,
        rgba(0,212,204,0.4) 12px,
        rgba(0,212,204,0.4) 14px
    );
}

/* ===========================
   SECTION 2: The Bar
   =========================== */
.section-bar {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

.bar-above {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background-color: var(--warm-cream);
    display: flex;
    align-items: flex-end;
    justify-content: flex-start;
    padding: 0 8vw 3rem;
    transition: height 8s ease-in-out;
}

.bar-below {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 50%;
    background-color: var(--dark-ground);
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 3rem 8vw 0;
    transition: height 8s ease-in-out;
}

.bar-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 6px;
    background-color: var(--burnt-orange);
    z-index: 10;
    transform: translateY(-50%);
    animation: barOscillate 8s ease-in-out infinite alternate;
}

@keyframes barOscillate {
    0% { top: 40%; }
    100% { top: 55%; }
}

.bar-label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.bar-above .bar-label {
    color: var(--sienna);
}

.bar-below .bar-label {
    color: var(--sienna);
}

.section-rule {
    position: absolute;
    bottom: 2rem;
    left: 0;
    width: 100%;
    padding: 0 8vw;
    z-index: 15;
}

.swiss-rule {
    border: none;
    height: 1px;
    background-color: var(--burnt-orange);
    width: 75%;
    margin: 0;
}

.swiss-rule--cyan {
    background-color: var(--glitch-cyan);
}

.depth-label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sienna);
    display: block;
    margin-top: 0.5rem;
}

.depth-label--cyan {
    color: var(--glitch-cyan);
}

/* ===========================
   SECTION 3: Card Descent
   =========================== */
.section-cards {
    position: relative;
    width: 100%;
    min-height: 300vh;
    background: linear-gradient(
        to bottom,
        var(--warm-cream) 0%,
        var(--warm-cream) 20%,
        #D4C4B0 50%,
        var(--dark-ground) 100%
    );
    padding: 6rem 8vw 8rem;
    overflow: hidden;
}

.section-rule--cards {
    position: relative;
    bottom: auto;
    margin: 4rem 0 3rem;
    padding: 0;
}

/* --- Card Rows --- */
.card-row {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
    margin-bottom: 3rem;
    position: relative;
}

.card-row--1 {
    padding-top: 0;
}

.card-row--2 {
    padding-top: 24px;
}

.card-row--3 {
    padding-top: 48px;
}

/* --- Card Module --- */
.card {
    perspective: 1200px;
    width: calc(50% - 1rem);
    min-height: 360px;
    cursor: pointer;
    transform: translateX(120%);
    opacity: 0;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.6s ease;
}

.card-row--2 .card {
    width: calc(33.333% - 1.34rem);
    min-height: 320px;
}

.card-row--3 .card {
    width: calc(50% - 1rem);
    min-height: 340px;
}

.card.card--visible {
    transform: translateX(0);
    opacity: 1;
}

/* Stagger offset for "lowering" effect */
.card:nth-child(1) { margin-top: 0; }
.card:nth-child(2) { margin-top: 24px; }
.card:nth-child(3) { margin-top: 48px; }

.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    min-height: inherit;
    transition: transform 400ms cubic-bezier(0.4, 0, 0.2, 1);
    transform-style: preserve-3d;
}

.card:hover .card-inner,
.card.card--flipped .card-inner {
    transform: rotateY(180deg);
}

.card-front,
.card-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    min-height: inherit;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: 4px;
    overflow: hidden;
}

/* --- Card Front --- */
.card-front {
    background-color: var(--dark-ground);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: 1.5rem;
    position: relative;
}

.card-glitch-visual {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 70%;
    overflow: hidden;
}

/* Glitch visual variations using CSS patterns */
.card-glitch-visual--1 {
    background:
        linear-gradient(180deg, var(--burnt-orange) 0%, var(--rust) 40%, var(--dark-ground) 100%);
}
.card-glitch-visual--1::before {
    content: '';
    position: absolute;
    top: 20%;
    left: -4px;
    width: 100%;
    height: 100%;
    background: inherit;
    opacity: 0.6;
    mix-blend-mode: screen;
}
.card-glitch-visual--1::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 2px,
        rgba(0,212,204,0.06) 2px,
        rgba(0,212,204,0.06) 4px
    );
}

.card-glitch-visual--2 {
    background:
        linear-gradient(135deg, var(--amber) 0%, var(--sienna) 50%, var(--dark-ground) 100%);
}
.card-glitch-visual--2::before {
    content: '';
    position: absolute;
    top: 10%;
    left: 8px;
    width: 60%;
    height: 3px;
    background: var(--glitch-cyan);
    box-shadow: 0 12px 0 var(--glitch-cyan), 0 28px 0 var(--glitch-cyan);
}
.card-glitch-visual--2::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 3px,
        rgba(26,20,16,0.15) 3px,
        rgba(26,20,16,0.15) 4px
    );
}

.card-glitch-visual--3 {
    background:
        radial-gradient(ellipse at 30% 40%, var(--burnt-orange) 0%, var(--rust) 40%, var(--dark-ground) 80%);
}
.card-glitch-visual--3::before {
    content: '';
    position: absolute;
    top: 0;
    left: 6px;
    width: 100%;
    height: 100%;
    background: inherit;
    opacity: 0.3;
    filter: hue-rotate(180deg);
}
.card-glitch-visual--3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    background: repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 2px,
        rgba(0,212,204,0.08) 2px,
        rgba(0,212,204,0.08) 4px
    );
}

.card-glitch-visual--4 {
    background:
        linear-gradient(45deg, var(--dark-ground) 0%, var(--sienna) 50%, var(--amber) 100%);
}
.card-glitch-visual--4::before {
    content: '';
    position: absolute;
    top: 30%;
    left: 0;
    width: 100%;
    height: 16px;
    background: var(--burnt-orange);
    clip-path: polygon(0 0, 70% 0, 70% 100%, 0 100%);
}
.card-glitch-visual--4::after {
    content: '';
    position: absolute;
    top: 0;
    left: -12px;
    width: 100%;
    height: 100%;
    background: inherit;
    opacity: 0.2;
    mix-blend-mode: difference;
}

.card-glitch-visual--5 {
    background:
        linear-gradient(180deg, var(--rust) 0%, var(--burnt-orange) 60%, var(--amber) 100%);
}
.card-glitch-visual--5::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        90deg,
        transparent 0px,
        transparent 14px,
        rgba(0,212,204,0.12) 14px,
        rgba(0,212,204,0.12) 16px
    );
}
.card-glitch-visual--5::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    width: 45%;
    height: 2px;
    background: var(--glitch-cyan);
    opacity: 0.7;
}

.card-glitch-visual--6 {
    background:
        conic-gradient(from 180deg at 60% 50%, var(--dark-ground), var(--burnt-orange), var(--sienna), var(--dark-ground));
}
.card-glitch-visual--6::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 6px,
        rgba(232,134,42,0.1) 6px,
        rgba(232,134,42,0.1) 8px
    );
}
.card-glitch-visual--6::after {
    content: '';
    position: absolute;
    top: 15%;
    right: 10%;
    width: 16px;
    height: 16px;
    background: var(--glitch-cyan);
    opacity: 0.5;
}

.card-glitch-visual--7 {
    background:
        linear-gradient(270deg, var(--dark-ground) 0%, var(--rust) 30%, var(--burnt-orange) 60%, var(--amber) 100%);
}
.card-glitch-visual--7::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        linear-gradient(0deg, transparent 48%, rgba(0,212,204,0.15) 48%, rgba(0,212,204,0.15) 52%, transparent 52%),
        linear-gradient(0deg, transparent 68%, rgba(196,81,10,0.2) 68%, rgba(196,81,10,0.2) 72%, transparent 72%);
}
.card-glitch-visual--7::after {
    content: '';
    position: absolute;
    top: 20%;
    left: 4px;
    width: 100%;
    height: 100%;
    background: inherit;
    opacity: 0.15;
    mix-blend-mode: screen;
}

.card-headline {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    letter-spacing: -0.02em;
    color: var(--warm-cream);
    text-shadow: 2px 2px 0px var(--dark-ground);
    position: relative;
    z-index: 2;
}

.card-index {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    letter-spacing: 0.08em;
    color: var(--sienna);
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
}

/* --- Card Back --- */
.card-back {
    background-color: var(--dark-ground);
    transform: rotateY(180deg);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem 1.5rem 1.5rem;
}

.card-text {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 400;
    font-size: clamp(0.9rem, 1.5vw, 1.05rem);
    line-height: 1.65;
    color: var(--warm-cream);
    max-width: 38em;
}

.palette-strip {
    display: flex;
    gap: 4px;
    margin-top: 1rem;
}

.swatch {
    display: block;
    width: 24px;
    height: 24px;
    border-radius: 2px;
}

/* --- Chevron Transition --- */
.chevron-transition {
    text-align: center;
    padding: 4rem 0 2rem;
}

.chevron {
    font-family: 'IBM Plex Mono', monospace;
    font-size: 1.5rem;
    color: var(--burnt-orange);
    letter-spacing: 0.2em;
    animation: chevronPulse 2s ease-in-out infinite;
    display: inline-block;
    transform: rotate(90deg);
}

@keyframes chevronPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* ===========================
   SECTION 4: Deep Layer
   =========================== */
.section-deep {
    position: relative;
    width: 100%;
    min-height: 150vh;
    background-color: var(--dark-ground);
    padding: 6rem 8vw;
    overflow: hidden;
}

.scanlines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
    background: repeating-linear-gradient(
        0deg,
        transparent 0px,
        transparent 2px,
        rgba(0,212,204,0.08) 2px,
        rgba(0,212,204,0.08) 4px
    );
}

.section-rule--deep {
    position: relative;
    bottom: auto;
    padding: 0;
    margin-bottom: 6rem;
}

.deep-lines {
    position: relative;
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 200px;
    padding: 4rem 0;
}

.deep-line {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 400;
    font-style: italic;
    font-size: clamp(1.5rem, 4vw, 2.4rem);
    letter-spacing: 0.01em;
    color: var(--warm-cream);
    text-align: center;
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.deep-line.deep-line--visible {
    opacity: 1;
    transform: translateY(0);
}

/* ===========================
   SECTION 5: Bottom
   =========================== */
.section-bottom {
    position: relative;
    width: 100%;
    height: 100vh;
    background-color: var(--dark-ground);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    align-items: flex-start;
    padding: 8vh 8vw;
    overflow: hidden;
}

.section-rule--bottom {
    position: absolute;
    top: 2rem;
    bottom: auto;
    left: 0;
    padding: 0 8vw;
}

.bottom-title {
    font-family: 'Playfair Display', Georgia, serif;
    font-weight: 700;
    font-size: clamp(2.8rem, 8vw, 5.5rem);
    letter-spacing: -0.02em;
    color: var(--warm-cream);
    position: relative;
    z-index: 5;
}

.bottom-title::after {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    width: 2px;
    height: 110%;
    transform: translateY(-50%);
    background-color: var(--glitch-cyan);
    opacity: 0.5;
}

.bottom-glow {
    position: absolute;
    bottom: 10%;
    left: 20%;
    width: 60%;
    height: 60%;
    background: radial-gradient(
        ellipse at center,
        rgba(196,81,10,0.2) 0%,
        rgba(196,81,10,0.08) 40%,
        transparent 70%
    );
    pointer-events: none;
    z-index: 1;
}

.cyan-pulse-line {
    position: absolute;
    top: 50%;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--glitch-cyan);
    z-index: 10;
    transform: scaleX(0);
    transform-origin: left;
    opacity: 0;
}

.cyan-pulse-line.cyan-pulse--active {
    animation: cyanPulse 3s linear forwards;
}

@keyframes cyanPulse {
    0% {
        transform: scaleX(0);
        opacity: 1;
    }
    60% {
        transform: scaleX(1);
        opacity: 1;
    }
    100% {
        transform: scaleX(1);
        opacity: 0;
    }
}

/* ===========================
   Commentary Track (Aside)
   =========================== */
.commentary-track {
    position: fixed;
    top: 50%;
    right: 2vw;
    transform: translateY(-50%);
    width: 180px;
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
}

.commentary-track.commentary--visible {
    opacity: 1;
    pointer-events: auto;
}

.commentary-item {
    padding: 0.75rem;
    border-left: 2px solid var(--sienna);
    background: rgba(26,20,16,0.85);
    backdrop-filter: blur(4px);
    border-radius: 2px;
}

.commentary-label {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.65rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--sienna);
    display: block;
    margin-bottom: 0.4rem;
}

.commentary-text {
    font-family: 'Source Serif 4', Georgia, serif;
    font-weight: 400;
    font-size: 0.75rem;
    line-height: 1.5;
    color: var(--warm-cream);
    opacity: 0.8;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 900px) {
    .card {
        width: 100% !important;
    }

    .card-row--2 .card {
        width: 100% !important;
    }

    .card:nth-child(2) { margin-top: 16px; }
    .card:nth-child(3) { margin-top: 32px; }

    .commentary-track {
        display: none;
    }

    .deep-lines {
        gap: 120px;
    }

    .section-cards {
        padding: 4rem 6vw 6rem;
    }
}

@media (max-width: 600px) {
    .section-opening {
        padding: 6vh 6vw;
    }

    .section-bottom {
        padding: 6vh 6vw;
    }

    .card {
        min-height: 280px !important;
    }

    .deep-lines {
        gap: 80px;
    }

    .binary-strip {
        display: none;
    }
}