/* Colour Studio — Digital Architect Redesign */

.app-body { 
    background: var(--background); 
}

.ce-container {
    padding: 160px 5% 80px;
    max-width: 1200px;
    margin: 0 auto;
    min-height: calc(100vh - 150px);
}

.ce-header { text-align: center; margin-bottom: 48px; }

.page-title {
    font-size: 3.5rem;
    font-weight: 800;
    letter-spacing: -2px;
    margin-bottom: 16px;
    color: var(--on-surface);
}

.section-subtitle {
    color: var(--on-surface-variant);
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Tabs */
.ce-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.ce-tab {
    padding: 12px 28px;
    background: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    color: var(--on-surface-variant);
    border-radius: 100px;
    cursor: pointer;
    font-family: 'Manrope';
    font-weight: 700;
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.ce-tab.active {
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: var(--on-primary);
    border-color: transparent;
    box-shadow: 0 10px 20px rgba(0, 37, 66, 0.1);
}

.ce-tab-content { display: none; }
.ce-tab-content.active { display: block; animation: fadeIn 0.4s ease-out; }

/* Cards */
.ce-card, .ce-section-card {
    background: var(--surface-container-lowest);
    border-radius: 32px;
    padding: 40px;
    box-shadow: 0 4px 30px rgba(0, 37, 66, 0.03);
    margin-bottom: 24px;
}

.drop-zone {
    border: 2px dashed var(--outline-variant);
    border-radius: 24px;
    padding: 60px 20px;
    text-align: center;
    background: var(--surface-container-low);
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.drop-zone.dragover {
    border-color: var(--primary);
    background: var(--surface-container-high);
}

.ce-btn {
    padding: 14px 28px;
    border-radius: 100px;
    font-weight: 700;
    font-family: 'Manrope';
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.ce-btn.primary-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-container));
    color: var(--on-primary);
}

.ce-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 37, 66, 0.1);
}

/* Design Mode Layout */
.ce-grid-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 32px;
}

.side-title { 
    font-size: 0.9rem; 
    margin-bottom: 20px; 
    color: var(--primary); 
    text-transform: uppercase; 
    letter-spacing: 1.5px; 
    font-weight: 800;
}

/* Picker */
.color-preview-big {
    height: 140px;
    border-radius: 20px;
    border: 4px solid var(--surface-container-low);
    margin-bottom: 16px;
}

#manual-color-input {
    width: 100%;
    height: 50px;
    border-radius: 12px;
    border: none;
    background: var(--surface-container-low);
    cursor: pointer;
    padding: 4px;
}

.ce-input-small {
    background: var(--surface-container-low);
    border: 2px solid transparent;
    color: var(--on-surface);
    padding: 12px;
    border-radius: 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.1rem;
    text-align: center;
    width: 100%;
    outline: none;
}
.ce-input-small:focus { border-color: var(--primary); }

/* Accessibility Tool */
.contrast-preview {
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    margin-bottom: 24px;
    font-weight: 700;
    font-size: 1.2rem;
}

.contrast-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.95rem;
    color: var(--on-surface-variant);
    font-weight: 600;
}

.badge {
    padding: 4px 12px;
    border-radius: 6px;
    font-weight: 800;
    font-size: 0.75rem;
}
.badge.pass { background: #e8f5e9; color: #2e7d32; }
.badge.fail { background: #ffebee; color: #c62828; }

/* Harmony */
.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.ce-select {
    background: var(--surface-container-low);
    color: var(--on-surface);
    border: 2px solid transparent;
    padding: 10px 20px;
    border-radius: 12px;
    font-family: 'Manrope';
    font-weight: 700;
    cursor: pointer;
    outline: none;
}
.ce-select:focus { border-color: var(--primary); }

.harmony-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    gap: 16px;
}

/* Swatches */
.swatch-card {
    border-radius: 20px;
    overflow: hidden;
    background: var(--surface-container-low);
    transition: all 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.swatch-card:hover { transform: translateY(-8px); box-shadow: 0 12px 24px rgba(0, 37, 66, 0.08); }

.swatch-color { height: 120px; position: relative; }

.variation-row {
    display: flex;
    gap: 4px;
    height: 60px;
    border-radius: 12px;
    overflow: hidden;
}

.var-swatch {
    flex: 1;
    cursor: pointer;
    transition: flex 0.3s;
}
.var-swatch:hover { flex: 2; }

@media (max-width: 900px) {
    .ce-grid-layout { grid-template-columns: 1fr; }
    .page-title { font-size: 2.5rem; }
    .ce-container { padding-top: 140px; }
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.ce-picker-hint {
    font-size: 0.72rem;
    font-weight: 700;
    color: var(--on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 10px;
}

.ce-util-btn {
    padding: 8px 20px;
    border-radius: 100px;
    border: 2px solid var(--outline-variant);
    background: transparent;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.8rem;
    cursor: pointer;
    font-family: 'Manrope', sans-serif;
    transition: all 0.2s;
    white-space: nowrap;
}
.ce-util-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }
.ce-util-btn.pdf-export-btn { border: none; background: #0078FF; color: white; font-weight: 800; }
.ce-util-btn.pdf-export-btn:hover { background: #005FCC; border: none; color: white; box-shadow: 0 8px 20px rgba(0, 120, 255, 0.3); }

/* ── Panel actions row ─────────────────────────────────────────── */
.panel-actions {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

/* ── Image preview: widescreen scaling ────────────────────────── */
.drop-zone #preview-image {
    max-height: 280px;
    width: auto;
    max-width: 100%;
    object-fit: contain;
    border-radius: 16px;
}

.drop-zone.has-image {
    min-height: auto;
    padding: 24px;
    align-items: center;
}

/* ── Horizontal swatch grid ───────────────────────────────────── */
.palette-grid {
    display: flex;
    flex-direction: row;
    gap: 14px;
    overflow-x: auto;
    padding-bottom: 6px;
    padding-top: 4px;
}

.palette-grid::-webkit-scrollbar { height: 6px; }
.palette-grid::-webkit-scrollbar-track { background: transparent; }
.palette-grid::-webkit-scrollbar-thumb { background: var(--outline-variant); border-radius: 3px; }

.swatch-sq {
    flex: 0 0 130px;
    width: 130px;
    border-radius: 20px;
    overflow: hidden;
    background: var(--surface-container-low);
    transition: transform 0.25s cubic-bezier(0.2, 0.8, 0.2, 1);
}
.swatch-sq:hover { transform: translateY(-6px); }

.sq-color {
    height: 100px;
    position: relative;
    cursor: pointer;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 8px;
}

.sq-hex-overlay {
    font-size: 0.72rem;
    font-weight: 800;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: 0.5px;
    opacity: 0;
    transition: opacity 0.2s;
    pointer-events: none;
    text-shadow: 0 1px 3px rgba(0,0,0,0.3);
}
.sq-color:hover .sq-hex-overlay { opacity: 1; }

.sq-info {
    padding: 10px 12px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.sq-sub {
    font-size: 0.65rem;
    color: var(--on-surface-variant);
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.3px;
}

.sq-use-btn {
    margin-top: 6px;
    padding: 5px 10px;
    border-radius: 100px;
    border: 1.5px solid var(--outline-variant);
    background: transparent;
    color: var(--primary);
    font-weight: 700;
    font-size: 0.68rem;
    cursor: pointer;
    font-family: 'Manrope', sans-serif;
    transition: all 0.2s;
    align-self: flex-start;
}
.sq-use-btn:hover { background: var(--primary); color: white; border-color: var(--primary); }

/* ── Extracted colours strip in designer ──────────────────────── */
.extracted-designer-panel {
    background: var(--surface-container-low);
    border-radius: 24px;
    padding: 20px 28px;
    margin-bottom: 24px;
    border: 1px solid var(--outline-variant);
}

.extracted-panel-header {
    display: flex;
    align-items: baseline;
    gap: 12px;
    margin-bottom: 14px;
}

.extracted-panel-title {
    font-size: 0.8rem;
    font-weight: 800;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.extracted-panel-hint {
    font-size: 0.78rem;
    color: var(--on-surface-variant);
    font-weight: 500;
}

.extracted-strip {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.ext-strip-swatch {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    border: 3px solid transparent;
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 4px;
    overflow: hidden;
}
.ext-strip-swatch:hover { transform: scale(1.12); border-color: var(--primary); }
.ext-strip-swatch.active { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(0,153,204,0.3); }

.ext-strip-label {
    font-size: 0.52rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: white;
    text-shadow: 0 1px 3px rgba(0,0,0,0.7);
    opacity: 0;
    transition: opacity 0.15s;
    pointer-events: none;
    letter-spacing: -0.5px;
}
.ext-strip-swatch:hover .ext-strip-label { opacity: 1; }