/*
 * SIDapticus Demo
 * https://github.com/hankdraco/sidapticus-demo
 *
 * Copyright (C) 2026 Łukasz Drzewiecki
 * SPDX-License-Identifier: MIT
 */

:root {
	--bg-color: #24243a;
	--border-color: #7070ff;
	--text-color: #7070ff;
	--text-accent-color: #adadad;
	--hover-color: oklch(from var(--text-color) calc(l + 0.2) c h);
	--up-color: #ffffff;
	--down-color: #222222;
	--accent-color: #00aa00;
	--bg-scroll-y: 0%;
    --eq-bg-color: var(--down-color);
    --eq-border-color: var(--text-color);
    --eq-line-color: var(--hover-color);
    --eq-fill-color: var(--text-color);
    --eq-bar-color: var(--text-color);
    --eq-meter-color: var(--hover-color);
	--eq-meter-yellow: #eab308;
	--eq-meter-red: #ef4444;
	--eq-meter-peak-color: var(--text-accent-color);
}

body {
    background-image: url('background.png');
    background-color: var(--bg-color);
    background-position: center var(--bg-scroll-y, 0%);
    background-size: cover;
    background-repeat: no-repeat;
    background-attachment: fixed;
    color: var(--text-color);
    margin: 0;
    min-height: 100vh;
    padding: 60px 20px;
    box-sizing: border-box;
    display: flex;
    justify-content: center;
    font-family: 'Courier New', monospace;
    image-rendering: pixelated;

    opacity: 0;
    transition: opacity 0.5s ease-in;
}

body.fonts-ready {
    opacity: 1;
}

.c64-page {
    background: var(--bg-color);
    border: 4px solid var(--text-accent-color);
    width: 100%;
    max-width: 820px;
    padding: 30px 40px 40px;
    box-sizing: border-box;
    height: fit-content;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.c64-page.dim-armed:not(:hover) {
    opacity: 0.2;
}

.c64-page:hover {
    opacity: 1;
}

@media (hover: none) {
    .c64-page {
        opacity: 1;
    }
}

h1 {
    font-size: 1.4em;
    margin: 40px 0 18px;
    text-transform: uppercase;
    font-weight: normal;
    color: var(--hover-color);
    border-bottom: 2px solid var(--text-color);
    padding-bottom: 8px;
}

h1:first-child {
    margin-top: 0;
}

a {
	color: var(--text-accent-color);
}

footer {
	border-top: 1px solid var(--text-accent-color);
}

.ab-player {
    background: var(--bg-color);
    border: 2px solid var(--text-color);
    padding: 18px 22px;
    margin-bottom: 20px;
}

.ab-player h2 {
    font-size: 1.05em;
    margin: 0 0 6px;
    text-transform: uppercase;
    font-weight: normal;
    color: var(--hover-color);
}

.ab-player .description {
    margin: 0 0 16px;
    font-size: 0.85em;
    color: var(--text-color);
    white-space: pre-wrap;
}

.ab-player .controls {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    flex-wrap: wrap;
}

.ab-player button {
    font-family: inherit;
    background: var(--text-color);
    color: var(--bg-color);
    border: none;
    padding: 8px 18px;
    font-size: 0.9em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all 0.2s;
}

.ab-player button:hover:not(:disabled) {
    background: var(--hover-color);
}

.ab-player button:active:not(:disabled) {
    background: var(--up-color);
}

.ab-player button:focus {
    outline: none;
    box-shadow: none;
}

.ab-player button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.ab-player button.active {
    background: var(--border-color);
    color: var(--up-color);
}

.ab-player .mode {
    font-size: 0.85em;
    margin-left: auto;
    text-transform: uppercase;
}

.ab-player .mode .sample-a { color: var(--hover-color); }
.ab-player .mode .sample-b { color: var(--up-color); }

.ab-player .progress-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ab-player .progress-track {
    flex: 1;
    height: 18px;
    background: var(--down-color);
    border: 1px solid var(--text-accent-color);
    cursor: pointer;
    position: relative;
}

.ab-player .progress-fill {
    height: 100%;
    width: 0%;
    background: var(--text-color);
    transition: width 0.2s;
    pointer-events: none;
}

.ab-player .time {
    font-family: 'Courier New', monospace;
    font-size: 0.8em;
    color: var(--text-color);
    min-width: 90px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.equalizer {
    position: fixed;
    left: 20px;
    bottom: 20px;
    width: 270px;
    height: 90px;
    display: flex;
    gap: 6px;
    background: var(--eq-bg-color);
    border: 2px solid var(--eq-border-color);
    box-sizing: border-box;
    padding: 4px;
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.7s ease;
}

.equalizer.visible {
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.3s ease;
}

.equalizer canvas {
    display: block;
    height: 100%;
}

.equalizer .eq-spectrum {
    flex: 1;
    min-width: 0;
}

.equalizer .eq-meter {
    width: 20px;
    flex-shrink: 0;
    border-left: 1px solid var(--eq-border-color);
    padding-left: 6px;
}

@media (max-width: 600px) {
    .equalizer {
        width: 180px;
        height: 60px;
        left: 10px;
        bottom: 10px;
    }

    .equalizer .eq-meter {
        width: 16px;
    }
}