/* ===== Base and Theme ===== */
:root {
    --bg-0: #111;
    --bg-1: #181818;
    --bg-2: #1b1b1b;
    --panel-bg: #151515;
    --panel-alt: #1d1d1d;
    --surface: #101010;
    --surface-2: #080808;
    --border: #333;
    --border-strong: #444;
    --border-soft: #2a2a2a;
    --text: #ddd;
    --muted: #aaa;
    --accent: #00ff66;
    --accent-blue: #00bbff;
    --accent-warning: #ffbf55;
    --accent-amber: #ff9900;
    --danger: #ff5555;
    --shadow: 0 4px 0 #222;
    --radius-sm: 8px;
    --radius-md: 10px;
    --radius-lg: 12px;
    --radius-xl: 14px;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
    margin: 0;
}

body {
    background: var(--bg-0);
    color: var(--text);
    font-family: monospace;
}

button {
    width: 42px;
    height: 42px;
    border: none;
    border-radius: var(--radius-md);
    background: linear-gradient(to bottom, #4a4a4a, #2f2f2f);
    color: white;
    font-size: 18px;
    font-family: monospace;
    cursor: pointer;
    box-shadow: 0 4px 0 #222, inset 0 1px 1px rgba(255, 255, 255, 0.15);
    transition: transform 0.05s, background 0.1s;
}

button:hover {
    background: linear-gradient(to bottom, #5c5c5c, #3a3a3a);
}

button:active {
    transform: translateY(3px);
    box-shadow: 0 1px 0 #222, inset 0 1px 3px rgba(0, 0, 0, 0.4);
}

img {
    width: 250px;
    height: auto;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-strong);
}

a {
    color: var(--accent-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.code {
    font-family: monospace;
    font-size: 13px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 2px 6px;
}

/* ===== App Shell ===== */
#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

#workspace {
    flex: 1;
    display: flex;
    min-height: 0;
}

.panel {
    min-height: 0;
    padding: 14px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    background: linear-gradient(to bottom, var(--bg-2), var(--panel-bg));
    border-right: 2px solid #2c2c2c;
    box-shadow: inset 0 0 20px rgba(255, 255, 255, 0.02);
}

#left,
#center,
#right {
    flex: 1 1 0;
    min-height: 0;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    min-width: 350px;
    gap: 16px;
}

.section {
    min-height: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.section-header {
    font-size: 11px;
    letter-spacing: 2px;
    color: #777;
    padding: 6px 2px;
    border-bottom: 1px solid var(--border-soft);
    text-transform: uppercase;
}

/* ===== I/O and Display Areas ===== */
#output-wrap {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex-shrink: 0;
}

#text-display,
#num-display,
#grid-display {
    background: linear-gradient(to bottom, #050505, var(--surface));
    border: 2px solid var(--border-strong);
    border-radius: var(--radius-md);
    padding: 12px;
    box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.9), 0 0 12px rgba(0, 255, 120, 0.08);
    position: relative;
}

#output-row {
    display: flex;
    gap: 12px;
    max-width: 400px;
}

#text-display,
#num-display {
    flex: 1;
    height: 40px;
    color: var(--accent);
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#grid-display {
    aspect-ratio: 1;
    background-color: #050505;
    max-height: 375px;
    max-width: 375px;
    overflow: auto;
}

#pixel-grid {
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(32, 1fr);
    grid-template-rows: repeat(32, 1fr);
    gap: 1px;
}

.pixel {
    background: #111;
}

.pixel.active {
    background: #eee;
}

#input-wrap {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: auto;
    padding: 12px;
    background: #1a1a1a;
    border-radius: var(--radius-xl);
    border: 2px solid var(--border);
    flex-shrink: 0;
    max-width: 400px;
}

#dpad-wrap {
    width: 120px;
    height: 120px;
    position: relative;
}

#dpad-wrap button {
    position: absolute;
}

#btn-up {
    top: 0;
    left: 40px;
}

#btn-dwn {
    bottom: 0;
    left: 40px;
}

#btn-lft {
    left: 0;
    top: 40px;
}

#btn-rgt {
    right: 0;
    top: 40px;
}

#ctr-btns-wrap {
    display: flex;
    gap: 12px;
    align-items: center;
    margin-top: 40px;
    flex-shrink: 0;
}

#rgt-btns-wrap {
    position: relative;
    width: 120px;
    height: 80px;
    flex-shrink: 0;
}

#ctr-btn-a,
#ctr-btn-b {
    position: absolute;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    font-weight: bold;
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.14);
    background: linear-gradient(to bottom, #ff6b6b, #c92a2a);
    box-shadow: 0 5px 0 rgba(0, 0, 0, 0.28), inset 0 1px 1px rgba(255, 255, 255, 0.18), 0 0 14px rgba(255, 255, 255, 0.08);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35);
}

#ctr-btn-a:hover,
#ctr-btn-b:hover {
    background: linear-gradient(to bottom, #ff7f7f, #dd3a3a);
}

#ctr-btn-a {
    right: 0;
    top: 0;
}

#ctr-btn-b {
    left: 0;
    bottom: 0;
}

/* ===== Controls and Status ===== */
#control-wrap {
    display: flex;
    flex-direction: column;
    gap: 16px;
    padding: 14px;
    background: linear-gradient(to bottom, var(--panel-alt), #141414);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.03);
    flex-shrink: 0;
}

#control-buttons {
    display: flex;
    gap: 10px;
}

#control-buttons button {
    flex: 1;
    min-height: 0;
    height: 46px;
    font-size: 14px;
    letter-spacing: 0.5px;
}

#speed-control {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#speed-header {
    display: flex;
    justify-content: space-between;
    font-size: 13px;
    color: var(--muted);
}

#program-speed-slider {
    width: 100%;
    appearance: none;
    height: 18px;
    border-radius: 999px;
    background: transparent;
    outline: none;
    margin: 0;
    padding: 0;
    display: block;
}

#program-speed-slider::-webkit-slider-runnable-track {
    height: 8px;
    border-radius: 999px;
    background: #ffdd00;
}

#program-speed-slider::-webkit-slider-thumb {
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    border: 2px solid #222;
    margin-top: -5px;
}

#program-speed-slider::-moz-range-track {
    height: 8px;
    border-radius: 999px;
    background: #ffdd00;
}

#program-speed-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    cursor: pointer;
    border: 2px solid #222;
    margin-top: -5px;
}

#program-speed-slider::-ms-track {
    width: 100%;
    height: 8px;
    color: transparent;
    background: transparent;
    border-color: transparent;
}

#program-speed-slider::-ms-fill-lower,
#program-speed-slider::-ms-fill-upper {
    background: #ffdd00;
    border-radius: 999px;
}

#program-speed-slider::-ms-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: white;
    border: 2px solid #222;
    margin-top: 0;
}

#cpu-status-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 12px;
    color: var(--muted);
}

#cpu-status-text {
    font-weight: bold;
}

.status-running {
    color: #00ff88;
}

#cpu-status-text:not(.status-running) {
    color: var(--danger);
}

#control-wrap,
#flags-panel,
#stack-panel {
    flex-shrink: 0;
}

#flags-panel,
#stack-panel {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 12px;
    background: linear-gradient(to bottom, #1c1c1c, #131313);
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: inset 0 0 8px rgba(255, 255, 255, 0.03);
}

#flags-wrap,
#stack-display-wrap {
    display: flex;
    gap: 12px;
}

.flag-box,
.stack-box {
    flex: 1;
    min-height: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 10px;
    border-radius: var(--radius-sm);
    transition: border-color 0.15s, box-shadow 0.15s, color 0.15s;
}

.flag-box {
    background: linear-gradient(to bottom, var(--surface), var(--surface-2));
    border: 2px solid var(--border);
}

.flag-box.active {
    border-color: var(--accent-amber);
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.15);
    color: var(--accent-amber);
}

.flag-box:not(.active) {
    color: #666;
}

.flag-label {
    font-size: 12px;
    letter-spacing: 1px;
}

.flag-value {
    font-size: 20px;
    font-weight: bold;
}

.stack-box {
    color: var(--accent);
    font-size: 14px;
    font-weight: bold;
    background: linear-gradient(to bottom, var(--surface), var(--surface-2));
    border: 2px solid var(--border);
}

/* ===== Memory and Registers ===== */
#memory-display-wrap {
    display: flex;
    flex: 1 1 auto;
    min-height: 0;
    gap: 12px;
    overflow: hidden;
}

#reg-file-display,
#data-memory-display {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    max-height: 300px;
    background: #181818;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px;
}

#reg-file-display {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    align-content: start;
}

#data-memory-display {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    align-content: start;
}

.reg-cell,
.mem-cell {
    background: linear-gradient(to bottom, var(--surface), #0a0a0a);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 6px;
    text-align: center;
    box-shadow: inset 0 0 4px rgba(255, 255, 255, 0.03);
    min-width: 0;
}

.reg-cell {
    color: var(--accent-blue);
    font-size: 11px;
}

.mem-cell {
    color: #ff4444;
    font-size: 10px;
}

.reg-bin,
.mem-bin {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1;
    gap: 1px;
    margin-top: 2px;
}

.bin-top,
.bin-bottom {
    font-size: 10px;
    letter-spacing: 1px;
}

/* ===== Editor Panel ===== */
.editor-shell {
    display: flex;
    width: 100%;
    height: 100%;
    min-height: 0;
    border: 2px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    background: #0f0f0f;
    box-shadow: inset 0 0 12px rgba(0, 0, 0, 0.8);
}

.editor-gutter {
    flex: 0 0 75px;
    padding: 18px 2px;
    color: #6d6d6d;
    font-family: monospace;
    font-size: 15px;
    line-height: 1.6;
    text-align: right;
    background: #0b0b0b;
    border-right: 1px solid var(--border);
    overflow-y: auto;
    overflow-x: auto;
    scrollbar-width: none;
    user-select: none;
    box-sizing: border-box;
}

.editor-gutter-line {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3px;
    align-items: center;
    height: 1.6em;
    line-height: 1.6;
    white-space: nowrap;
}

.editor-gutter-line .gutter-line-number,
.editor-gutter-line .gutter-instruction-number {
    display: block;
    text-align: right;
}

.editor-gutter-line .gutter-line-number {
    color: #7f7f7f;
}

.editor-gutter-line .gutter-instruction-number {
    color: #d1d1d1;
    padding-left: 2px;
}

.editor-gutter::-webkit-scrollbar {
    display: none;
}

.editor-text-area {
    position: relative;
    flex: 1 1 auto;
    min-width: 0;
}

#code-editor {
    width: 100%;
    height: 100%;
    resize: none;
    background: transparent;
    color: #ff88ff;
    caret-color: #ff88ff;
    outline: none;
    padding: 18px;
    font-family: monospace;
    font-size: 15px;
    line-height: 1.6;
    overflow-y: auto;
    flex-grow: 1;
    min-height: 0;
    box-sizing: border-box;
    position: relative;
    z-index: 2;
    white-space: pre;
}



/* ===== Bottom Panel ===== */
#bottom-panel {
    display: flex;
    flex-direction: column;
    border-top: 2px solid #2d2d2d;
    background: var(--bg-1);
    flex-shrink: 0;
}

#bottom-toolbar {
    height: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 12px;
    gap: 10px;
}

#bottom-toolbar>button,
#bottom-buttons>button {
    width: auto;
    height: auto;
    min-height: 30px;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
    letter-spacing: 0.5px;
    background: linear-gradient(to bottom, #2a2a2a, #1d1d1d);
    border: 1px solid #3a3a3a;
    box-shadow: none;
    color: #e6e6e6;
}

#bottom-toolbar>button:hover,
#bottom-buttons>button:hover {
    background: linear-gradient(to bottom, #343434, #232323);
}

#bottom-toolbar>button:active,
#bottom-buttons>button:active {
    transform: translateY(1px);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.4);
}

#bottom-buttons {
    display: flex;
    gap: 8px;
}

#problems-panel {
    display: none;
    height: 180px;
    overflow: auto;
    border-top: 1px solid var(--border);
    background: var(--bg-0);
}

#problems-toggle.has-problems {
    color: #ffb4b4;
    border-color: #ff6b6b;
}

.problem {
    padding: 8px 10px;
    border-left: 3px solid transparent;
    color: #e8e8e8;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

.problem.error {
    border-left-color: #ff6b6b;
    color: #ffd2d2;
}

.problem.warning {
    border-left-color: #f1b95d;
    color: #ffe8c0;
}

#bottom-panel.open #problems-panel {
    display: block;
}

/* ===== Modal and Documentation ===== */
#modal-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.55);
    z-index: 1000;
}

#modal-overlay.hidden {
    display: none;
}

#modal-window {
    width: min(900px, 90vw);
    height: min(700px, 85vh);
    display: flex;
    flex-direction: column;
    background: #171717;
    border: 2px solid #3b3b3b;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

#modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: #202020;
    border-bottom: 1px solid var(--border);
}

#modal-title {
    font-size: 18px;
    font-weight: bold;
}

#modal-body {
    flex: 1;
    overflow: auto;
    padding: 20px;
    color: var(--text);
    line-height: 1.6;
    font-size: 15px;
}

#modal-body h1,
#modal-body h2,
#modal-body h3,
#modal-body p,
#modal-body pre,
#modal-body table {
    margin: 0;
}

#modal-body h1 {
    margin-bottom: 18px;
    color: #ffffff;
}

#modal-body h2,
.doc-card h2,
.doc-title {
    color: #6fc3ff;
    font-size: 22px;
}

#modal-body h2 {
    margin-bottom: 8px;
}

#modal-body h3,
.doc-card h3 {
    margin: 0 0 8px;
    color: var(--accent-warning);
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

#modal-body p,
.doc-card p {
    margin: 10px 0;
    line-height: 1.6;
}

#modal-body pre,
.doc-code {
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: #7dff93;
    overflow-x: auto;
}

#modal-body table,
.doc-table {
    width: 100%;
    border-collapse: collapse;
}

#modal-body th,
#modal-body td,
.doc-table th,
.doc-table td {
    padding: 8px;
}

#modal-body th,
.doc-table th {
    text-align: left;
    color: var(--accent-warning);
    background: #232323;
}

#modal-body tr:nth-child(even),
.doc-table tr:nth-child(even) {
    background: rgba(255, 255, 255, 0.03);
}

.doc-page {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.doc-intro {
    color: var(--muted);
    line-height: 1.6;
}

.doc-card {
    margin-bottom: 22px;
    padding: 18px;
    background: linear-gradient(to bottom, #1e1e1e, var(--bg-1));
    border: 1px solid #383838;
    border-radius: var(--radius-lg);
    box-shadow: inset 0 0 10px rgba(255, 255, 255, 0.02), 0 2px 8px rgba(0, 0, 0, 0.35);
}

.doc-card h2 {
    margin: 0 0 12px;
    color: #ffffff;
    font-size: 22px;
}

.doc-card h3 {
    margin: 18px 0 8px;
    color: #7fcfff;
    font-size: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.doc-card p {
    margin: 8px 0;
    line-height: 1.6;
}

.doc-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid #303030;
}

.doc-title {
    margin: 0;
    color: #6fc3ff;
    font-size: 22px;
}

.doc-category,
.doc-badge,
.doc-badge-button {
    padding: 4px 10px;
    border-radius: 999px;
    background: #2b2b2b;
    color: #bbb;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 1px;
    white-space: nowrap;
}

.doc-badge-button {
    display: inline-flex;
    width: auto;
    height: auto;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.doc-section {
    margin-top: 18px;
}

.doc-section:first-of-type {
    margin-top: 0;
}

.doc-flags,
.doc-tags {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.doc-flag,
.doc-tag {
    padding: 5px 10px;
    border-radius: 999px;
    background: #2d2d2d;
    border: 1px solid #444;
    color: var(--accent-warning);
    font-weight: bold;
    font-size: 13px;
}

.doc-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
    margin-top: 10px;
}

.doc-table th {
    background: #232323;
    color: #6fc3ff;
}

.doc-table td,
.doc-table th {
    padding: 10px;
}

.doc-table tr:not(:last-child) {
    border-bottom: 1px solid var(--border);
}

.io-access {
    display: inline-block;
    min-width: 42px;
    padding: 2px 8px;
    margin-right: 10px;
    border-radius: 999px;
    text-align: center;
    font-size: 11px;
    font-weight: bold;
    color: white;
}

.io-access.read {
    background: #2f80ed;
}

.io-access.write {
    background: #f2994a;
}

.io-access.read-write {
    background: #27ae60;
}

.doc-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.doc-card-header h2 {
    margin: 0;
    flex: 1 1 auto;
}

.doc-card-header .doc-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin: 2px 0;
}

.doc-code {
    margin: 0;
    padding: 12px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: #7dff93;
    overflow-x: auto;
}

.swal2-popup {
    background: #171717;
    color: #ddd;
    border: 2px solid #3b3b3b;
    border-radius: 12px;
}

.swal2-actions {
    gap: 12px;
}

.swal2-confirm,
.swal2-cancel {
    min-width: 140px;
    font-family: monospace;
    font-size: 14px;
    padding: 10px 18px;
}

.swal2-confirm {
    background: #007aaa !important;
}

.swal2-cancel {
    background: #444 !important;
}