/* ============================================
   bada.day - Generative Mountain Landscape
   Retro-futuristic | F-pattern | Glitch
   ============================================ */

:root {
    --deep-space: #0f0a2e;
    --summit-snow: #f5ede0;
    --sunset-magenta: #ff6b9d;
    --chrome-horizon: #b8a9d4;
    --neon-moss: #7ecba1;
    --twilight-purple: #2b1055;
    --glitch-cyan: #00e5ff;
    --ridge-shadow: #1a0f30;
    --body-text-light: #d4c8b0;
    --body-text-dark: #3d2b5a;
    --warm-ratio: 1;
    --cool-ratio: 0;
    --glitch-offset: 2px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    background-color: var(--deep-space);
    color: var(--body-text-light);
    font-family: 'Source Sans 3', 'Source Sans Pro', sans-serif;
    font-weight: 400;
    font-size: 1.1rem;
    line-height: 1.8;
    overflow-x: hidden;
    position: relative;
}

/* Subtle dot field background */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(circle, var(--ridge-shadow) 1px, transparent 1px),
        radial-gradient(circle, var(--ridge-shadow) 1px, transparent 1px);
    background-size: 40px 40px, 60px 60px;
    background-position: 0 0, 30px 30px;
    opacity: 0.4;
    pointer-events: none;
    z-index: 0;
}

/* CRT Scanline overlay */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 2px,
        rgba(0, 0, 0, 0.03) 2px,
        rgba(0, 0, 0, 0.03) 4px
    );
    pointer-events: none;
    z-index: 1000;
}

/* ---- Page Container: F-pattern grid ---- */
.page-container {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 0;
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
    min-height: 100vh;
}

/* ---- Content Column (left, 8/12) ---- */
.content-column {
    padding: 40px 60px 80px 60px;
}

/* ---- Plateaus (content sections) ---- */
.plateau {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    position: relative;
    opacity: 0;
    transform: translateX(4px);
}

.plateau.visible {
    animation: glitchEntrance 400ms ease-out forwards;
}

@keyframes glitchEntrance {
    0% {
        opacity: 0;
        transform: translateX(4px);
        filter: hue-rotate(20deg);
    }
    30% {
        opacity: 1;
        transform: translateX(-2px);
    }
    60% {
        transform: translateX(1px);
        filter: hue-rotate(0deg);
    }
    100% {
        opacity: 1;
        transform: translateX(0);
        filter: none;
    }
}

.plateau-inner {
    position: relative;
    padding: 40px 0;
}

/* ---- Glitch Headings ---- */
.glitch-heading {
    font-family: 'Libre Baskerville', 'Georgia', serif;
    font-weight: 700;
    font-size: clamp(2.2rem, 5vw, 4.8rem);
    color: var(--summit-snow);
    letter-spacing: 0em;
    margin-bottom: 24px;
    position: relative;
    line-height: 1.2;
}

.glitch-text {
    position: relative;
    display: inline-block;
}

/* Chromatic aberration - red channel */
.glitch-text::before {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: var(--glitch-offset);
    color: var(--sunset-magenta);
    opacity: 0.4;
    z-index: -1;
    clip-path: inset(0 0 0 0);
}

/* Chromatic aberration - blue channel */
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: calc(var(--glitch-offset) * -1);
    color: var(--glitch-cyan);
    opacity: 0.4;
    z-index: -1;
    clip-path: inset(0 0 0 0);
}

.glitch-heading:hover .glitch-text::before {
    left: 6px;
    transition: left 0.1s ease-out;
}

.glitch-heading:hover .glitch-text::after {
    left: -6px;
    transition: left 0.1s ease-out;
}

.glitch-text::before,
.glitch-text::after {
    transition: left 0.3s ease;
}

/* Section-specific heading colors for altitude */
.plateau--summit .glitch-heading {
    color: var(--glitch-cyan);
}

.plateau--upper-ridge .glitch-heading {
    color: var(--chrome-horizon);
}

/* ---- Annotations (IBM Plex Mono) ---- */
.annotation {
    font-family: 'IBM Plex Mono', monospace;
    font-weight: 400;
    font-size: 0.75rem;
    color: var(--sunset-magenta);
    margin-bottom: 20px;
    letter-spacing: 0.05em;
}

/* ---- Body Text ---- */
.body-text {
    font-family: 'Source Sans 3', 'Source Sans Pro', sans-serif;
    font-weight: 400;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--body-text-light);
    margin-bottom: 20px;
    max-width: 640px;
}

.summit-final {
    font-family: 'Libre Baskerville', 'Georgia', serif;
    font-size: 1.4rem;
    font-style: italic;
    color: var(--chrome-horizon);
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(184, 169, 212, 0.2);
}

/* ---- Micro Mountains (decorative triangles) ---- */
.micro-mountains {
    display: flex;
    gap: 4px;
    margin-bottom: 16px;
    align-items: flex-end;
}

.tri {
    display: inline-block;
    width: 0;
    height: 0;
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.tri-1 {
    border-left: 8px solid transparent;
    border-right: 8px solid transparent;
    border-bottom: 16px solid var(--sunset-magenta);
}

.tri-2 {
    border-left: 6px solid transparent;
    border-right: 6px solid transparent;
    border-bottom: 20px solid var(--neon-moss);
}

.tri-3 {
    border-left: 10px solid transparent;
    border-right: 10px solid transparent;
    border-bottom: 14px solid var(--chrome-horizon);
}

.tri-4 {
    border-left: 7px solid transparent;
    border-right: 7px solid transparent;
    border-bottom: 18px solid var(--glitch-cyan);
}

.tri-5 {
    border-left: 9px solid transparent;
    border-right: 9px solid transparent;
    border-bottom: 12px solid var(--twilight-purple);
}

.micro-mountains:hover .tri {
    transform: rotate(15deg) scale(1.05);
}

/* Altitude-based palette shift for micro-mountains */
.plateau--basecamp .tri-1 { border-bottom-color: var(--sunset-magenta); }
.plateau--basecamp .tri-2 { border-bottom-color: var(--summit-snow); }
.plateau--basecamp .tri-3 { border-bottom-color: var(--sunset-magenta); }

.plateau--lower-ridge .tri-1 { border-bottom-color: var(--neon-moss); }
.plateau--lower-ridge .tri-2 { border-bottom-color: var(--sunset-magenta); }
.plateau--lower-ridge .tri-3 { border-bottom-color: var(--chrome-horizon); }

.plateau--mid-mountain .tri-1 { border-bottom-color: var(--chrome-horizon); }
.plateau--mid-mountain .tri-2 { border-bottom-color: var(--neon-moss); }
.plateau--mid-mountain .tri-3 { border-bottom-color: var(--glitch-cyan); }

.plateau--upper-ridge .tri-1 { border-bottom-color: var(--glitch-cyan); }
.plateau--upper-ridge .tri-2 { border-bottom-color: var(--chrome-horizon); }
.plateau--upper-ridge .tri-3 { border-bottom-color: var(--neon-moss); }

.plateau--summit .tri-1 { border-bottom-color: var(--glitch-cyan); }
.plateau--summit .tri-2 { border-bottom-color: var(--chrome-horizon); }
.plateau--summit .tri-3 { border-bottom-color: var(--glitch-cyan); }

/* ---- Fault Lines ---- */
.fault-line {
    height: 8px;
    width: 100%;
    margin: 40px 0;
    background: linear-gradient(
        90deg,
        var(--sunset-magenta) 0%,
        var(--glitch-cyan) 25%,
        var(--deep-space) 50%,
        var(--sunset-magenta) 75%,
        var(--glitch-cyan) 100%
    );
    background-size: 200% 100%;
    opacity: 0.3;
    position: relative;
    overflow: hidden;
}

.fault-line.active {
    animation: faultJitter 500ms ease-in-out;
    opacity: 0.7;
}

@keyframes faultJitter {
    0% { transform: skewX(0deg); opacity: 0.3; }
    15% { transform: skewX(-2deg); opacity: 0.7; }
    30% { transform: skewX(1.5deg); opacity: 0.5; }
    45% { transform: skewX(-1deg); opacity: 0.8; }
    60% { transform: skewX(2deg); opacity: 0.6; }
    75% { transform: skewX(-0.5deg); opacity: 0.7; }
    100% { transform: skewX(0deg); opacity: 0.3; }
}

/* ---- Sidebar Landscape ---- */
.sidebar-landscape {
    position: sticky;
    top: 0;
    height: 100vh;
    background: linear-gradient(
        180deg,
        var(--deep-space) 0%,
        var(--ridge-shadow) 40%,
        var(--twilight-purple) 100%
    );
    overflow: hidden;
    border-left: 1px solid rgba(184, 169, 212, 0.1);
}

.landscape-canvas {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

/* Generative mountain triangles in sidebar */
.mountain-layer {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
}

.mountain-tri {
    position: absolute;
    bottom: 0;
    width: 0;
    height: 0;
    transform-origin: bottom center;
    transform: scaleY(0);
    animation: mountainGrow 600ms ease-out forwards;
}

@keyframes mountainGrow {
    0% { transform: scaleY(0); }
    70% { transform: scaleY(1.05); }
    100% { transform: scaleY(1); }
}

/* ---- Altitude Indicator ---- */
.altitude-indicator {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 10;
}

.altitude-bar {
    width: 4px;
    height: 200px;
    background: rgba(184, 169, 212, 0.15);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.altitude-fill {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0%;
    background: linear-gradient(
        to top,
        var(--sunset-magenta),
        var(--neon-moss),
        var(--glitch-cyan)
    );
    border-radius: 2px;
    transition: height 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.altitude-label {
    writing-mode: vertical-lr;
    text-orientation: mixed;
    font-size: 0.65rem;
    opacity: 0.6;
}

/* ---- Section background variations (altitude) ---- */
.plateau--basecamp {
    background: transparent;
}

.plateau--lower-ridge .plateau-inner {
    border-left: 2px solid rgba(255, 107, 157, 0.15);
    padding-left: 24px;
}

.plateau--mid-mountain {
    background: linear-gradient(
        135deg,
        rgba(43, 16, 85, 0.3) 0%,
        transparent 60%
    );
}

.plateau--mid-mountain .plateau-inner {
    border-left: 2px solid rgba(126, 203, 161, 0.2);
    padding-left: 24px;
}

.plateau--upper-ridge {
    background: linear-gradient(
        135deg,
        rgba(43, 16, 85, 0.5) 0%,
        transparent 70%
    );
}

.plateau--upper-ridge .plateau-inner {
    border-left: 2px solid rgba(0, 229, 255, 0.15);
    padding-left: 24px;
}

.plateau--summit {
    background: linear-gradient(
        180deg,
        rgba(43, 16, 85, 0.4) 0%,
        rgba(15, 10, 46, 0.8) 100%
    );
}

.plateau--summit .plateau-inner {
    border-left: 2px solid rgba(0, 229, 255, 0.3);
    padding-left: 24px;
}

/* ---- Ridge SVG Dividers ---- */
.ridge-divider {
    width: 100%;
    height: 40px;
    position: relative;
    overflow: hidden;
    opacity: 0.5;
}

.ridge-divider svg {
    width: 100%;
    height: 100%;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
    .page-container {
        grid-template-columns: 1fr;
    }

    .sidebar-landscape {
        position: relative;
        height: 50vh;
        order: -1;
    }

    .content-column {
        padding: 30px 24px 60px 24px;
    }

    .glitch-heading {
        font-size: clamp(1.6rem, 6vw, 3rem);
    }

    .plateau {
        min-height: auto;
        padding: 40px 0;
    }
}

@media (max-width: 600px) {
    .content-column {
        padding: 20px 16px 40px 16px;
    }

    .body-text {
        font-size: 1rem;
    }

    .altitude-indicator {
        display: none;
    }
}