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

body {
    background: #1a1a2e;
    color: #c8c8d0;
    font-family: 'Courier New', 'Consolas', monospace;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

/* ===== Main Layout (horizontal) ===== */
.main-layout {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    padding: 12px;
}

/* ===== Left Column: Screen + Toolbar ===== */
.left-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex-shrink: 0;
}

/* ===== Screen Container ===== */
.screen-container {
    position: relative;
    padding: 16px;
    background: #0a0a14;
    border: 3px solid #333;
    border-radius: 12px;
    box-shadow:
        0 0 20px rgba(0, 0, 0, 0.8),
        inset 0 0 40px rgba(0, 0, 0, 0.5);
}

.screen-container::before {
    content: '';
    position: absolute;
    top: 4px; left: 4px; right: 4px; bottom: 4px;
    border-radius: 10px;
    border: 2px solid #222;
    pointer-events: none;
    z-index: 1;
}

canvas#screen {
    display: block;
    width: 640px;
    height: 400px;
    image-rendering: pixelated;
    image-rendering: crisp-edges;
    background: #000;
    border-radius: 4px;
}

.scanlines {
    position: absolute;
    top: 16px; left: 16px;
    width: 640px;
    height: 400px;
    border-radius: 4px;
    pointer-events: none;
    background: repeating-linear-gradient(
        to bottom,
        transparent 0px,
        transparent 1px,
        rgba(0, 0, 0, 0.15) 1px,
        rgba(0, 0, 0, 0.15) 2px
    );
    mix-blend-mode: multiply;
    z-index: 2;
}

/* ===== Toolbar ===== */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 672px;
    margin-top: 8px;
    padding: 6px 12px;
    background: #16213e;
    border: 1px solid #333;
    border-radius: 6px;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.toolbar button {
    font-family: inherit;
    font-size: 0.8em;
    padding: 4px 10px;
    border: 1px solid #4a5a7a;
    border-radius: 4px;
    cursor: pointer;
    background: #2a3a5a;
    color: #c8c8d0;
    transition: background 0.15s;
}

.toolbar button:hover { background: #3a4a6a; }

.toolbar button.active {
    background: #0a4a2a;
    color: #00ee77;
    border-color: #00cc66;
}

.vol-label {
    font-size: 0.75em;
    color: #6688aa;
}

input[type="range"]#volumeSlider {
    width: 80px;
    height: 4px;
    accent-color: #00cc66;
    cursor: pointer;
}

/* ===== Right Column: Side Panel ===== */
.side-panel {
    width: 280px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: calc(400px + 32px + 8px + 34px);
    overflow-y: auto;
}

.side-panel::-webkit-scrollbar {
    width: 4px;
}

.side-panel::-webkit-scrollbar-thumb {
    background: #333;
    border-radius: 2px;
}

.sp-section {
    background: #16213e;
    border: 1px solid #333;
    border-radius: 6px;
    padding: 10px 12px;
}

.sp-section h3 {
    font-size: 0.8em;
    color: #4ea8de;
    margin-bottom: 6px;
    padding-bottom: 3px;
    border-bottom: 1px solid #2a2a4a;
}

.sp-section label {
    display: block;
    font-size: 0.75em;
    color: #8899aa;
    margin-bottom: 3px;
}

/* File inputs */
input[type="file"] {
    font-family: inherit;
    font-size: 0.7em;
    color: #c8c8d0;
    background: #0d1b2a;
    border: 1px solid #2a3a5a;
    border-radius: 4px;
    padding: 2px 4px;
    cursor: pointer;
    max-width: 100%;
}

input[type="file"]::file-selector-button {
    background: #2a3a5a;
    color: #c8c8d0;
    border: 1px solid #4a5a7a;
    border-radius: 3px;
    padding: 1px 6px;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9em;
    margin-right: 4px;
}

input[type="file"]::file-selector-button:hover {
    background: #3a4a6a;
}

/* ROM list */
.rom-list {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.rom-item {
    display: flex;
    align-items: center;
    gap: 4px;
}

.rom-item .rom-name {
    font-size: 0.7em;
    color: #6688aa;
    min-width: 82px;
    flex-shrink: 0;
}

.rom-item input[type="file"] {
    flex: 1;
    min-width: 0;
}

/* Status tag */
.status-tag {
    font-size: 0.7em;
    padding: 1px 5px;
    border-radius: 3px;
    background: #2a2a4a;
    color: #666;
    flex-shrink: 0;
}

.status-tag.loaded {
    background: #0a3a1a;
    color: #00cc66;
}

/* Radio buttons */
.radio-group {
    display: flex;
    gap: 10px;
}

.radio-group label {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    cursor: pointer;
    color: #c8c8d0;
    font-size: 0.8em;
}

input[type="radio"] { accent-color: #00cc66; }

/* Buttons */
.btn-row {
    display: flex;
    gap: 6px;
    margin-top: 4px;
}

button {
    font-family: inherit;
    font-size: 0.8em;
    padding: 4px 12px;
    border: 1px solid #4a5a7a;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.15s;
}

button.btn-start {
    background: #0a4a2a;
    color: #00ee77;
    border-color: #00cc66;
}

button.btn-start:hover {
    background: #0c5a32;
    box-shadow: 0 0 8px rgba(0, 204, 102, 0.3);
}

button.btn-stop {
    background: #4a1a1a;
    color: #ff6666;
    border-color: #cc3333;
}

button.btn-stop:hover {
    background: #5a2222;
}

button.btn-reset {
    background: #3a3a1a;
    color: #cccc66;
    border-color: #aaaa44;
}

button.btn-reset:hover {
    background: #4a4a22;
}

button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ===== Debug section ===== */
.debug-grid {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 2px 8px;
    font-size: 0.7em;
}

.debug-grid .d-label { color: #6688aa; }
.debug-grid .d-val { color: #aaccee; }

/* Palette swatches */
.palette-row {
    display: flex;
    gap: 2px;
    margin-top: 4px;
}

.pal-swatch {
    width: 20px;
    height: 14px;
    border: 1px solid #444;
    border-radius: 2px;
}

/* PSG registers */
.psg-regs {
    display: grid;
    grid-template-columns: repeat(8, 1fr);
    gap: 2px;
    margin-top: 4px;
    font-size: 0.65em;
    text-align: center;
}

.psg-regs .pr-hdr { color: #556; }
.psg-regs .pr-val { color: #8ab; background: #0d1b2a; border-radius: 2px; padding: 1px 0; }

/* Keyboard display */
.key-display {
    font-size: 0.75em;
    color: #aaccee;
    background: #0d1b2a;
    border-radius: 3px;
    padding: 3px 6px;
    min-height: 1.6em;
    margin-top: 3px;
}

/* ===== Site Title ===== */
.site-title {
    font-size: 1.3em;
    color: #4ea8de;
    text-align: center;
    margin-top: 12px;
    margin-bottom: 0;
    letter-spacing: 0.05em;
}

/* ===== Footer ===== */
.footer {
    font-size: 0.85em;
    color: #c0c0c0;
    margin-top: 8px;
    text-align: center;
}

.footer a {
    color: #c0c0c0;
    text-decoration: underline;
}

.footer a:hover {
    color: #ffffff;
}

.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 4px;
}

.footer-links a {
    color: #6688aa;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: color 0.15s;
}

.footer-links a:hover {
    color: #ffffff;
}

.footer-repo {
    font-size: 0.85em;
    margin-left: 4px;
}

/* ===== Input Monitor Panel ===== */
.input-panel {
    display: none;
    position: fixed;
    bottom: 48px;
    right: 16px;
    width: 240px;
    background: #16213e;
    border: 1px solid #333;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    z-index: 50;
    font-size: 0.75em;
}

.input-panel.open { display: block; }

.ip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    border-bottom: 1px solid #2a2a4a;
    color: #4ea8de;
    font-size: 0.9em;
    font-weight: bold;
}

.ip-close {
    background: none;
    border: none;
    color: #6688aa;
    font-size: 1.3em;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
}

.ip-close:hover { color: #fff; }

.ip-body { padding: 8px 10px; }

.ip-section { margin-bottom: 8px; }
.ip-section:last-child { margin-bottom: 0; }

.ip-label {
    color: #6688aa;
    font-size: 0.85em;
    margin-bottom: 3px;
}

.ip-sublabel {
    color: #556;
    font-size: 0.85em;
    margin-left: 6px;
}

.ip-held-keys {
    color: #aaccee;
    background: #0d1b2a;
    border-radius: 3px;
    padding: 3px 6px;
    min-height: 1.6em;
    word-break: break-all;
    line-height: 1.5;
}

.ip-fm7key {
    display: flex;
    align-items: center;
}

.ip-fm7key span:first-child {
    color: #00cc66;
    background: #0d1b2a;
    border-radius: 3px;
    padding: 2px 8px;
    font-family: inherit;
}

/* Joystick D-pad */
.ip-joy-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.ip-joy-dpad {
    display: grid;
    grid-template-columns: 16px 16px 16px;
    grid-template-rows: 16px 16px 16px;
    gap: 1px;
}

.ip-joy-dpad span {
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 2px;
}

.jp-u { grid-column: 2; grid-row: 1; }
.jp-l { grid-column: 1; grid-row: 2; }
.jp-c { grid-column: 2; grid-row: 2; background: #0d1b2a; border-radius: 2px; }
.jp-r { grid-column: 3; grid-row: 2; }
.jp-d { grid-column: 2; grid-row: 3; }

.jp-u, .jp-d, .jp-l, .jp-r {
    background: #2a2a4a;
    border: 1px solid #333;
}

.jp-u.active, .jp-d.active, .jp-l.active, .jp-r.active {
    background: #00cc66;
    border-color: #00ee77;
}

/* Joystick buttons */
.ip-joy-btns {
    display: flex;
    gap: 4px;
}

.jp-btn {
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #2a2a4a;
    border: 1px solid #333;
    border-radius: 50%;
    color: #6688aa;
    font-size: 0.8em;
}

.jp-btn.active {
    background: #cc4444;
    border-color: #ee5555;
    color: #fff;
}

/* ===== Help Modal ===== */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 100;
    justify-content: center;
    align-items: center;
}

.modal-overlay.open {
    display: flex;
}

.modal-content {
    background: #1a1a2e;
    border: 1px solid #333;
    border-radius: 10px;
    padding: 28px 32px;
    max-width: 720px;
    width: 90vw;
    max-height: 85vh;
    overflow-y: auto;
    position: relative;
    line-height: 1.7;
    box-shadow: 0 0 40px rgba(0, 0, 0, 0.6);
}

.modal-content::-webkit-scrollbar { width: 6px; }
.modal-content::-webkit-scrollbar-thumb { background: #333; border-radius: 3px; }

.modal-close {
    position: absolute;
    top: 10px;
    right: 14px;
    background: none;
    border: none;
    color: #6688aa;
    font-size: 1.6em;
    cursor: pointer;
    padding: 0 4px;
    line-height: 1;
}

.modal-close:hover { color: #ffffff; }

.modal-content h1 { color: #4ea8de; font-size: 1.4em; margin-bottom: 8px; }
.modal-content h2 { color: #4ea8de; font-size: 1.1em; margin-top: 24px; border-bottom: 1px solid #2a2a4a; padding-bottom: 4px; }
.modal-content h3 { color: #6cb8e6; font-size: 0.95em; margin-top: 16px; }
.modal-content p { margin: 8px 0; }
.modal-content a { color: #4ea8de; }
.modal-content a:hover { color: #ffffff; }

.modal-content code {
    background: #0d1b2a;
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 0.9em;
}

.modal-content table {
    border-collapse: collapse;
    width: 100%;
    margin: 10px 0;
    font-size: 0.85em;
}

.modal-content th,
.modal-content td {
    border: 1px solid #2a3a5a;
    padding: 5px 10px;
    text-align: left;
}

.modal-content th { background: #16213e; color: #4ea8de; }
.modal-content td { background: #0d1b2a; }
.modal-content ul, .modal-content ol { padding-left: 22px; margin: 8px 0; }
.modal-content li { margin: 4px 0; }

/* ===== Fullscreen ===== */
.screen-container:fullscreen,
.screen-container:-webkit-full-screen {
    background: #000;
    border: none;
    border-radius: 0;
    padding: 0;
    margin: 0;
    box-shadow: none;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100vw;
    height: 100vh;
}

.screen-container:fullscreen::before,
.screen-container:-webkit-full-screen::before { display: none; }

.screen-container:fullscreen canvas#screen,
.screen-container:-webkit-full-screen canvas#screen {
    border-radius: 0;
    width: min(100vw, calc(100vh * 8 / 5));
    height: min(100vh, calc(100vw * 5 / 8));
}

.screen-container:fullscreen .scanlines,
.screen-container:-webkit-full-screen .scanlines {
    top: 0; left: 0;
    width: 100%;
    height: 100%;
    border-radius: 0;
}