/* =========================================
   plotgrapher.com - Styles
   Generative-Classical Horizontal Gallery
   ========================================= */

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

:root {
    --obsidian: #0B0C10;
    --deep-marble: #1A1A2E;
    --ruby: #9B111E;
    --emerald: #046307;
    --sapphire: #0F52BA;
    --amethyst: #6A0DAD;
    --topaz: #D4AF37;
    --alabaster: #F0EDE5;
    --pearl: #B8B5AD;
    --ease-spring: cubic-bezier(0.22, 1, 0.36, 1);
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: var(--obsidian);
    color: var(--alabaster);
    font-family: 'Lora', Georgia, serif;
}

/* --- Horizontal Scroll Container --- */
.scroll-container {
    display: flex;
    flex-direction: row;
    width: 100%;
    height: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-snap-type: x mandatory;
    scroll-behavior: smooth;
    -ms-overflow-style: none;
    scrollbar-width: none;
}

.scroll-container::-webkit-scrollbar {
    display: none;
}

/* --- Panel Base --- */
.panel {
    flex: 0 0 100vw;
    width: 100vw;
    height: 100vh;
    scroll-snap-align: start;
    position: relative;
    overflow: hidden;
}

.panel[data-bg="obsidian"] {
    background: var(--obsidian);
}

.panel[data-bg="deep-marble"] {
    background: var(--deep-marble);
}

.panel-frame {
    position: absolute;
    inset: 4vw;
    overflow: hidden;
}

/* --- Canvas & Overlays --- */
.panel-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.marble-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
    mix-blend-mode: multiply;
    opacity: 0.08;
    background: repeating-linear-gradient(
        135deg,
        transparent,
        transparent 40px,
        rgba(184, 181, 173, 0.15) 40px,
        rgba(184, 181, 173, 0.15) 41px
    ),
    repeating-linear-gradient(
        45deg,
        transparent,
        transparent 60px,
        rgba(240, 237, 229, 0.1) 60px,
        rgba(240, 237, 229, 0.1) 61px
    );
}

/* --- Typography --- */
.site-title {
    font-family: 'Cormorant Garamond', 'Georgia', serif;
    font-weight: 600;
    font-size: clamp(2.8rem, 6vw, 5.5rem);
    letter-spacing: 0.03em;
    color: var(--alabaster);
    z-index: 3;
    position: relative;
    text-align: center;
}

.panel-heading {
    font-family: 'Cormorant Garamond', 'Georgia', serif;
    font-weight: 600;
    font-size: clamp(2rem, 4vw, 3.5rem);
    letter-spacing: 0.03em;
    color: var(--alabaster);
    margin-bottom: 1rem;
    z-index: 3;
    position: relative;
}

.panel-heading--large {
    font-size: clamp(2.8rem, 6vw, 5.5rem);
}

.panel-body {
    font-family: 'Lora', Georgia, serif;
    font-weight: 400;
    font-size: clamp(1rem, 1.8vw, 1.25rem);
    line-height: 1.7;
    color: var(--pearl);
    z-index: 3;
    position: relative;
    max-width: 42ch;
}

.subtitle {
    font-size: clamp(0.9rem, 1.5vw, 1.1rem);
    color: var(--pearl);
    margin-top: 1.5rem;
    z-index: 3;
    position: relative;
    text-align: center;
}

.mono {
    font-family: 'Fira Code', 'Courier New', monospace;
    font-weight: 400;
    font-size: clamp(0.75rem, 1.2vw, 0.9rem);
}

/* --- Panel Layouts --- */

/* Text panels - centered content */
.panel-content--centered {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 3;
    text-align: center;
    width: 80%;
}

/* Monument panels - caption at bottom */
.monument-caption {
    position: absolute;
    bottom: 2vw;
    left: 2vw;
    right: 2vw;
    z-index: 3;
    padding: 1.5rem 2rem;
    background: linear-gradient(to top, rgba(11, 12, 16, 0.9), transparent);
    border-top: 1px solid rgba(212, 175, 55, 0.2);
}

/* Diptych panels */
.panel-diptych .panel-frame {
    display: flex;
    flex-direction: row;
}

.panel-diptych .panel-canvas {
    width: 60%;
    flex: 0 0 60%;
}

.diptych-text {
    position: absolute;
    right: 0;
    top: 0;
    width: 38%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 3vw;
    z-index: 3;
    border-left: 2px solid var(--amethyst);
}

.diptych-text .panel-body {
    margin-bottom: 1.2rem;
}

.coord-display {
    margin-top: 1.5rem;
    padding: 0.8rem 1.2rem;
    background: rgba(11, 12, 16, 0.7);
    border: 1px solid rgba(212, 175, 55, 0.3);
    display: inline-block;
}

/* --- Glitch Text --- */
.glitch-text {
    font-family: 'Lora', Georgia, serif;
    font-style: italic;
    font-size: clamp(1.2rem, 2.5vw, 1.8rem);
    line-height: 2;
    color: var(--alabaster);
    max-width: 60ch;
    margin: 0 auto;
    position: relative;
}

/* --- Progress Bar --- */
.progress-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    z-index: 100;
    background: rgba(11, 12, 16, 0.5);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(to right, var(--ruby), var(--emerald), var(--sapphire));
    transition: width 0.3s var(--ease-spring);
}

.progress-diamonds {
    position: absolute;
    top: -3px;
    left: 0;
    width: 100%;
    height: 9px;
    pointer-events: none;
}

.progress-diamond {
    position: absolute;
    width: 6px;
    height: 6px;
    background: var(--topaz);
    transform: rotate(45deg) translateY(-50%);
    top: 50%;
    opacity: 0.6;
}

/* --- Navigation Arrows --- */
.nav-arrow {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 99;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.4s var(--ease-spring);
    padding: 1rem;
}

.nav-arrow--left {
    left: 0.5vw;
}

.nav-arrow--right {
    right: 0.5vw;
}

.nav-arrow.visible {
    opacity: 0.6;
    animation: arrowPulse 2.5s ease-in-out infinite;
}

.nav-arrow:hover {
    opacity: 1;
}

@keyframes arrowPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.8; }
}

/* --- Hover-Lift Effect --- */
.hover-lift {
    transition: transform 0.35s var(--ease-spring), box-shadow 0.35s var(--ease-spring);
}

.hover-lift:hover {
    transform: translateY(-6px);
    box-shadow: 0px 8px 24px rgba(212, 175, 55, 0.15);
}

/* --- Interactive Cursor --- */
.panel-canvas:hover {
    cursor: none;
}

/* --- Panel Divider Lines --- */
.panel + .panel::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    width: 1px;
    height: 100%;
    background: rgba(212, 175, 55, 0.4);
    z-index: 10;
}

/* --- Marble Border for Monument Panels --- */
.panel-monument .panel-frame::before,
.panel-monument .panel-frame::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
    height: 7.5vh;
    z-index: 5;
    pointer-events: none;
    background: linear-gradient(
        90deg,
        rgba(184, 181, 173, 0.06) 0%,
        rgba(240, 237, 229, 0.04) 25%,
        rgba(184, 181, 173, 0.08) 50%,
        rgba(240, 237, 229, 0.04) 75%,
        rgba(184, 181, 173, 0.06) 100%
    );
}

.panel-monument .panel-frame::before {
    top: 0;
}

.panel-monument .panel-frame::after {
    bottom: 0;
}

/* --- Greek Key / Meander Border Animation --- */
.panel-frame {
    border: 1px solid rgba(184, 181, 173, 0.12);
    position: relative;
}

.panel-frame::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    z-index: 6;
    pointer-events: none;
    border: 1px solid transparent;
    background:
        linear-gradient(var(--obsidian), var(--obsidian)) padding-box,
        repeating-linear-gradient(
            90deg,
            var(--topaz) 0px,
            var(--topaz) 8px,
            transparent 8px,
            transparent 16px
        ) border-box;
    opacity: 0.12;
    animation: meanderShift 12s linear infinite;
}

@keyframes meanderShift {
    0% { background-position: 0 0; }
    100% { background-position: 64px 0; }
}

/* --- Glitch Hover Effect on Canvases --- */
.panel-canvas.glitching {
    filter: saturate(1.8) contrast(1.3);
}

/* --- Custom Cursor --- */
.custom-cursor {
    position: fixed;
    width: 10px;
    height: 10px;
    background: var(--topaz);
    transform: rotate(45deg) translate(-50%, -50%);
    pointer-events: none;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.2s;
}

.custom-cursor.active {
    opacity: 1;
}

/* --- Responsive Adjustments --- */
@media (max-width: 768px) {
    .diptych-text {
        width: 100%;
        position: absolute;
        bottom: 0;
        left: 0;
        right: 0;
        top: auto;
        height: auto;
        border-left: none;
        border-top: 2px solid var(--amethyst);
        padding: 2rem;
        background: linear-gradient(to top, rgba(11, 12, 16, 0.95), rgba(11, 12, 16, 0.7));
    }

    .panel-diptych .panel-canvas {
        width: 100%;
        flex: 0 0 100%;
    }

    .panel-frame {
        inset: 2vw;
    }
}