@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;600;700&family=Outfit:wght@400;600;700&display=swap');

:root {
    --bg-main: #0a0e14;
    --bg-secondary: #14181f;
    --bg-tertiary: #1e242e;
    --accent-primary: #00cccc;
    --accent-secondary: #a71313;
    --text-primary: #e6e9ef;
    --text-secondary: #8c92a3;
    --border-color: #2a3142;
    --success: #0f9b55;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: var(--bg-secondary);
    border-radius: 16px;
    padding: 40px;
    border: 1px solid var(--border-color);
}

h1 {
    color: var(--accent-primary);
    margin-bottom: 10px;
    font-size: 2em;
    font-weight: 700;
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 30px;
    font-size: 0.95em;
}

/* ─── Upload sections ──────────────────────────────────────────── */

.upload-section {
    margin-bottom: 30px;
    padding: 20px;
    background: var(--bg-tertiary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.upload-section h2 {
    font-size: 1.2em;
    color: var(--text-primary);
    margin-bottom: 15px;
    font-weight: 600;
}

/* ─── Form controls ────────────────────────────────────────────── */

.radio-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    color: var(--text-primary);
    margin-bottom: 15px;
}

.radio-label input[type="radio"],
.radio-label input[type="checkbox"] {
    width: auto;
    cursor: pointer;
}

.radio-text {
    font-weight: 600;
}

.field-label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-weight: 600;
}

.styled-select {
    padding: 8px 12px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-family: 'Outfit', sans-serif;
    cursor: pointer;
}

.styled-select:focus { outline: none; border-color: var(--accent-primary); }

.color-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.color-swatch {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.color-swatch input[type="color"] {
    width: 60px;
    height: 35px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    background: var(--bg-tertiary);
}

.color-swatch span {
    font-size: 0.8em;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ─── File button ──────────────────────────────────────────────── */

.file-input-wrapper {
    position: relative;
    display: inline-block;
    margin-bottom: 10px;
}

input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-button {
    display: inline-block;
    padding: 12px 24px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-family: 'Outfit', sans-serif;
}

.file-button:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

.file-info {
    display: inline-block;
    margin-left: 15px;
    color: var(--text-secondary);
    font-size: 0.9em;
    font-family: 'JetBrains Mono', monospace;
}

/* ─── Border/bg preview ────────────────────────────────────────── */

.border-option { /* container for each radio + its controls */ }

.border-preview {
    margin-top: 15px;
    padding: 15px;
    background: var(--bg-main);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    display: none;
}

.border-preview.active { display: block; }

.border-preview p { color: var(--text-secondary); }

.border-preview img {
    max-width: 200px;
    max-height: 200px;
    border: 2px solid var(--border-color);
    border-radius: 4px;
    padding: 5px;
    background: var(--bg-tertiary);
    image-rendering: pixelated;
}

/* ─── Corner picker ────────────────────────────────────────────── */

.corner-picker {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px 16px;
    display: inline-block;
}

.corner-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    width: 130px;
    margin-bottom: 10px;
}

.corner-btn {
    display: flex;
    align-items: center;
    gap: 7px;
    padding: 6px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85em;
    color: var(--text-primary);
    transition: border-color 0.2s;
    user-select: none;
}

.corner-btn:hover { border-color: var(--accent-primary); }

.corner-btn input[type="checkbox"] {
    width: 14px;
    height: 14px;
    accent-color: var(--accent-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.corner-hint {
    color: var(--text-secondary);
    font-size: 0.8em;
    max-width: 300px;
    line-height: 1.4;
    margin-top: 4px;
}

/* ─── Drop zones ───────────────────────────────────────────────── */

.drop-zones-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 12px;
}

@media (max-width: 560px) {
    .drop-zones-container { grid-template-columns: 1fr; }
}

.drop-zone {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 20px 16px;
    text-align: center;
    background: var(--bg-main);
    transition: border-color 0.2s, background 0.2s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    min-height: 180px;
    cursor: default;
}

.drop-zone.drag-over {
    border-color: var(--accent-primary);
    background: rgba(0,204,204,0.05);
}

.drop-zone.has-files {
    border-color: var(--success);
    border-style: solid;
}

.drop-zone-icon {
    font-size: 2em;
    line-height: 1;
    color: var(--text-secondary);
}

.drop-zone-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1em;
}

.drop-zone-desc {
    color: var(--text-secondary);
    font-size: 0.82em;
    margin: 0;
}

.drop-zone-footer {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 4px;
}

.drop-zone-count {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.82em;
    color: var(--text-secondary);
}

.clear-btn {
    padding: 3px 10px;
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 4px;
    font-size: 0.78em;
    cursor: pointer;
    font-family: 'Outfit', sans-serif;
    transition: all 0.2s;
}

.clear-btn:hover {
    border-color: var(--accent-secondary);
    color: var(--accent-secondary);
}

.file-list {
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-top: 2px;
}

.file-list-item {
    font-size: 0.75em;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    text-overflow: ellipsis;
    overflow: hidden;
    white-space: nowrap;
    max-width: 100%;
}

.file-list-more {
    color: var(--accent-primary);
}

.total-files-info {
    color: var(--text-secondary);
    font-size: 0.85em;
    font-family: 'JetBrains Mono', monospace;
    margin-bottom: 8px;
}

/* ─── Resources tip (collapsible) ───────────────────────────────── */

.resources-tip {
    background: var(--bg-main);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    overflow: hidden;
}

.resources-tip summary {
    padding: 10px 14px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9em;
    color: var(--text-secondary);
    list-style: none;
    user-select: none;
    transition: color 0.2s;
}

.resources-tip summary::-webkit-details-marker { display: none; }
.resources-tip summary::before { content: '▶ '; font-size: 0.7em; }
.resources-tip[open] summary::before { content: '▼ '; }
.resources-tip summary:hover { color: var(--text-primary); }

.resources-body {
    padding: 12px 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.87em;
    color: var(--text-secondary);
    line-height: 1.6;
}

.resources-body ul {
    margin: 8px 0 8px 16px;
}

.resources-body li { margin-bottom: 4px; }

.resources-body a {
    color: var(--accent-primary);
    text-decoration: none;
}

.resources-body a:hover { text-decoration: underline; }

/* ─── Process button & status ───────────────────────────────────── */

.process-button {
    padding: 14px 32px;
    background: var(--success);
    color: var(--bg-main);
    border: none;
    border-radius: 8px;
    font-size: 1em;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
    font-family: 'Outfit', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 20px rgba(15,155,85,0.3);
}

.process-button:hover:not(:disabled) {
    transform: translateY(-3px);
    box-shadow: 0 6px 25px rgba(15,155,85,0.4);
}

.process-button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
}

.status {
    margin-top: 15px;
    padding: 12px;
    background: rgba(15,155,85,0.2);
    border: 1px solid var(--success);
    border-radius: 8px;
    color: var(--success);
    display: none;
    font-family: 'JetBrains Mono', monospace;
}

.status.active { display: block; }

.progress-container {
    margin-top: 15px;
    display: none;
}

.progress-bar {
    width: 100%;
    height: 8px;
    background: var(--bg-main);
    border-radius: 4px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    position: relative;
}

.progress-bar::after {
    content: '';
    position: absolute;
    left: 0; top: 0;
    height: 100%;
    width: var(--progress, 0%);
    background: linear-gradient(90deg, var(--accent-primary), var(--success));
    transition: width 0.3s ease;
}

.progress-text {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9em;
    font-family: 'JetBrains Mono', monospace;
    text-align: center;
}

/* ─── Results grid ─────────────────────────────────────────────── */

.results {
    margin-top: 30px;
    display: none;
}

.results h2 {
    color: var(--accent-primary);
    margin-bottom: 20px;
    font-size: 1.3em;
    font-weight: 600;
}

.image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.image-item { text-align: center; }

.image-item canvas {
    border: 2px solid var(--border-color);
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-tertiary);
    image-rendering: pixelated;
}

.image-item canvas:hover {
    transform: scale(1.05);
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px rgba(0,204,204,0.3);
}

.download-all {
    padding: 12px 28px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Outfit', sans-serif;
}

.download-all:hover {
    background: var(--bg-secondary);
    border-color: var(--accent-primary);
}

.download-individual {
    margin-top: 8px;
    padding: 5px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 5px;
    font-size: 0.78em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: 'Outfit', sans-serif;
}

.download-individual:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

/* ─── Slice Modal ──────────────────────────────────────────────── */

.slice-modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.85);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
    backdrop-filter: blur(4px);
}

.slice-modal-content {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 28px;
    max-width: 420px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.6);
}

.slice-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.slice-modal-header h3 {
    color: var(--accent-primary);
    font-size: 1.1em;
    font-weight: 700;
    white-space: nowrap;
}

.slice-nav { display: flex; align-items: center; gap: 8px; }

.slice-nav-btn {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 6px;
    width: 32px; height: 32px;
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slice-nav-btn:hover:not(:disabled) {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.slice-nav-btn:disabled { opacity: 0.3; cursor: not-allowed; }

#sliceImageCounter {
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8em;
    white-space: nowrap;
}

.slice-preview-area { display: flex; justify-content: center; }

#slicePreviewCanvas {
    image-rendering: pixelated;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: #000;
    max-width: 100%;
}

.slice-checkboxes { min-height: 40px; }

.slice-count-hint {
    color: var(--text-secondary);
    font-size: 0.82em;
    margin-bottom: 12px;
}

.slice-checkbox-grid { display: flex; flex-direction: column; gap: 8px; }

.slice-checkbox-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: border-color 0.2s;
}

.slice-checkbox-item:hover { border-color: var(--accent-primary); }

.slice-checkbox-item input[type="checkbox"] {
    width: 16px; height: 16px;
    cursor: pointer;
    accent-color: var(--accent-primary);
    flex-shrink: 0;
}

.slice-color-dot {
    width: 12px; height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.slice-label {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9em;
    flex: 1;
}

.slice-px {
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8em;
}

.slice-modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.slice-kbd-hint {
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75em;
}

.slice-modal-buttons { display: flex; align-items: center; }