/* Room Planner - Retro/Sunset Theme */

.container {
    max-width: 1800px;
    margin: 0 auto;
    padding: 1.5rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 1.5rem;
}

.header h1 {
    font-size: 2rem;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 2px;
    background: linear-gradient(90deg, var(--accent, #ff6b6b), var(--yellow, #feca57));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.3rem;
}

.subtitle {
    font-size: 0.95rem;
    color: var(--muted, #9badb7);
    font-weight: 600;
}

/* App Layout */
.app-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 0;
    min-height: calc(100vh - 200px);
    border: 3px solid var(--border, #4a1d96);
    border-radius: 8px;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    background: var(--surface, #3a1775);
    padding: 20px;
    overflow-y: auto;
    max-height: calc(100vh - 200px);
    border-right: 3px solid var(--border, #4a1d96);
}

.panel {
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--border, #4a1d96);
}

.panel:last-child {
    border-bottom: none;
}

.panel h2 {
    font-size: 0.95em;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--yellow, #feca57);
    margin-bottom: 12px;
}

.panel h3 {
    font-size: 0.75em;
    color: var(--muted, #9badb7);
    margin: 12px 0 8px;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
}

/* Form Elements */
.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 0.8em;
    font-weight: 700;
    color: var(--muted, #9badb7);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input[type="text"],
.form-group input[type="number"] {
    width: 100%;
    padding: 8px 10px;
    border: 2px solid var(--border, #4a1d96);
    border-radius: 4px;
    font-size: 0.9em;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.08);
    color: var(--text, #f4f4f4);
    transition: border-color 0.15s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent, #ff6b6b);
}

.form-group input[type="color"] {
    width: 100%;
    height: 35px;
    border: 2px solid var(--border, #4a1d96);
    border-radius: 4px;
    cursor: pointer;
    background: transparent;
}

/* Button Group */
.button-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.btn-unit {
    padding: 8px;
    border: 2px solid var(--border, #4a1d96);
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 700;
    cursor: pointer;
    color: var(--text, #f4f4f4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.15s;
}

.btn-unit:hover {
    border-color: var(--accent, #ff6b6b);
}

.btn-unit.active {
    background: var(--accent, #ff6b6b);
    border-color: var(--accent, #ff6b6b);
    color: #fff;
}

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
    width: 100%;
    padding: 9px 16px;
    border: 2px solid transparent;
    border-radius: 4px;
    font-size: 0.85em;
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background 0.15s, transform 0.1s;
    margin-bottom: 8px;
    color: #fff;
}

.btn-primary {
    background: var(--accent, #ff6b6b);
    border-color: var(--accent, #ff6b6b);
}

.btn-primary:hover {
    background: transparent;
    color: var(--accent, #ff6b6b);
    transform: translateY(-2px);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border, #4a1d96);
    color: var(--text, #f4f4f4);
}

.btn-secondary:hover {
    border-color: var(--accent, #ff6b6b);
    transform: translateY(-2px);
}

.btn-danger {
    background: #e74c3c;
    border-color: #e74c3c;
}

.btn-danger:hover {
    background: transparent;
    color: #e74c3c;
    transform: translateY(-2px);
}

/* Furniture Buttons */
.furniture-category {
    margin-bottom: 12px;
}

.furniture-btn {
    width: 100%;
    padding: 8px 10px;
    margin-bottom: 6px;
    background: rgba(255, 255, 255, 0.08);
    border: 2px solid var(--border, #4a1d96);
    border-radius: 4px;
    font-size: 0.8em;
    font-weight: 700;
    cursor: pointer;
    color: var(--text, #f4f4f4);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.15s;
    text-align: left;
}

.furniture-btn:hover {
    border-color: var(--accent, #ff6b6b);
    transform: translateX(4px);
}

.furniture-btn:active {
    transform: translateX(4px) scale(0.98);
}

/* Canvas Area */
.canvas-area {
    background: rgba(0, 0, 0, 0.15);
    padding: 20px;
    display: flex;
    flex-direction: column;
}

.canvas-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--border, #4a1d96);
}

.canvas-header h2 {
    font-size: 1.1em;
    font-weight: 900;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text, #f4f4f4);
}

.canvas-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.btn-icon {
    width: 32px;
    height: 32px;
    border: 2px solid var(--border, #4a1d96);
    background: rgba(255, 255, 255, 0.08);
    border-radius: 4px;
    font-size: 16px;
    font-weight: 900;
    cursor: pointer;
    color: var(--text, #f4f4f4);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color 0.15s;
    padding: 0;
}

.btn-icon:hover {
    border-color: var(--accent, #ff6b6b);
    transform: none;
}

.btn-icon.btn-icon-wide {
    width: auto;
    padding: 0 10px;
    font-size: 0.75em;
    letter-spacing: 0.5px;
    text-transform: uppercase;
}

.toggle-label {
    font-size: 0.78em;
    color: var(--muted, #9badb7);
    cursor: pointer;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 4px;
    font-weight: 600;
}

.toggle-label input[type="checkbox"] {
    cursor: pointer;
}

.canvas-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    padding: 15px;
    border: 2px solid var(--border, #4a1d96);
    min-height: 600px;
}

#room-canvas {
    border: 2px solid var(--border, #4a1d96);
    border-radius: 2px;
    background: var(--surface, #3a1775);
}

.canvas-help {
    margin-top: 12px;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.08);
    border-left: 3px solid var(--yellow, #feca57);
    border-radius: 4px;
}

.canvas-help p {
    font-size: 0.8em;
    color: var(--muted, #9badb7);
    margin: 0;
    font-weight: 600;
}

.canvas-help strong {
    color: var(--yellow, #feca57);
}

/* Responsive */
@media (max-width: 1200px) {
    .app-layout {
        grid-template-columns: 250px 1fr;
    }
}

@media (max-width: 768px) {
    .app-layout {
        grid-template-columns: 1fr;
    }

    .sidebar {
        max-height: none;
        border-right: none;
        border-bottom: 3px solid var(--border, #4a1d96);
    }

    .canvas-header {
        flex-direction: column;
        gap: 10px;
    }

    .canvas-controls {
        flex-wrap: wrap;
    }
}

/* Loading State */
.loading {
    text-align: center;
    padding: 30px;
    color: var(--muted, #9badb7);
}

/* Hidden */
.hidden {
    display: none !important;
}