.full-width-container {
    max-width: 1000px;
}

/* Calibration */
.calibration-panel {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.calibration-info h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-xs);
}

.calibration-info p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.small-text {
    font-size: 0.85rem;
    color: var(--primary-color) !important;
}

.calibration-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.btn-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background: var(--glass-bg);
    color: var(--text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

#ppi-slider {
    flex: 1;
    height: 6px;
    background: var(--glass-border);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

#ppi-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.1s;
}

#ppi-slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#ppi-display {
    font-family: 'JetBrains Mono', monospace;
    font-weight: 600;
    min-width: 80px;
    text-align: right;
}

.calibration-box {
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--glass-bg);
    padding: 20px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.card-outline {
    height: 53.98mm;
    /* Physical height of credit card if 1mm = 1mm on screen */
    /* Width will be set dynamically via JS based on PPI */
    background: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    border-radius: 3.18mm;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: width 0.1s, height 0.1s;
    /* Smooth transition during calibration */
}

/* Ruler */
.ruler-container {
    width: 100%;
    overflow-x: auto;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-xl);
    padding: 20px 0;
    position: relative;
}

.ruler-scale {
    height: 60px;
    position: relative;
    border-bottom: 1px solid var(--text-color);
    margin: 0 20px;
}

.tick {
    position: absolute;
    bottom: 0;
    width: 1px;
    background-color: var(--text-color);
}

.tick.major {
    height: 20px;
}

.tick.medium {
    height: 15px;
}

.tick.minor {
    height: 8px;
}

.tick-label {
    position: absolute;
    bottom: 25px;
    transform: translateX(-50%);
    font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace;
    color: var(--text-color);
}

/* Rectangle Generator */
.rectangle-generator {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
}

.input-row {
    display: flex;
    gap: var(--spacing-lg);
    align-items: flex-end;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.input-wrapper {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.input-wrapper input {
    padding: 0.8rem;
    background: var(--bg-color);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    color: var(--text-color);
    width: 100px;
}

.input-wrapper select {
    padding: 0.8rem;
    background: var(--bg-color);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    color: var(--text-color);
}

.unit-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.canvas-area {
    min-height: 300px;
    background: var(--glass-bg);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: auto;
    padding: 20px;
}

.real-rect {
    background: rgba(59, 130, 246, 0.2);
    border: 2px solid var(--primary-color);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-weight: 600;
    transition: all 0.3s;
}

.hidden {
    display: none !important;
}

.divider {
    height: 1px;
    background: var(--glass-border);
    margin: var(--spacing-xl) 0;
}