/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    font-size: var(--font-size-body);
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: var(--touch-target);
    width: 100%;
    touch-action: manipulation;
    user-select: none;
    position: relative;
    gap: var(--spacing-sm);
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}

.btn-primary:active {
    background: var(--color-primary-dark);
}

.btn-secondary {
    background: var(--color-secondary);
    color: #fff;
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}

.btn-outline {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-outline:active {
    background: var(--color-background);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn:disabled {
    opacity: 0.5;
    pointer-events: none;
}

.btn .spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Button Sizes */
.btn-lg {
    padding: 16px 32px;
    font-size: 18px;
    min-height: 56px;
}

.btn-sm {
    padding: 8px 16px;
    font-size: var(--font-size-small);
    min-height: 36px;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin: var(--spacing-sm) 0;
    box-shadow: var(--shadow-sm);
}

.card-header {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.card-subtitle {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
}

/* ============================================
   INPUTS
   ============================================ */
.input-group {
    margin-bottom: var(--spacing-md);
}

.input-group label {
    display: block;
    font-weight: 500;
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-xs);
}

.input-group input,
.input-group select {
    width: 100%;
    padding: 12px 16px;
    font-size: var(--font-size-body);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    min-height: var(--touch-target);
    transition: border-color 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.input-group input.error {
    border-color: var(--color-danger);
}

/* ============================================
   QR SCANNER VIEWFINDER
   ============================================ */
.scanner-container {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background: #000;
    overflow: hidden;
    border-radius: var(--radius-md);
}

.scanner-container video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scanner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
}

.scanner-frame {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 70%;
    height: 70%;
    border: 3px solid rgba(0, 200, 83, 0.8);
    border-radius: var(--radius-sm);
    box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.5);
}

.scanner-frame .corner {
    position: absolute;
    width: 20px;
    height: 20px;
    border-color: var(--color-primary);
    border-style: solid;
    border-width: 0;
}

.scanner-frame .corner-tl {
    top: -2px;
    left: -2px;
    border-top-width: 4px;
    border-left-width: 4px;
    border-radius: 2px 0 0 0;
}

.scanner-frame .corner-tr {
    top: -2px;
    right: -2px;
    border-top-width: 4px;
    border-right-width: 4px;
    border-radius: 0 2px 0 0;
}

.scanner-frame .corner-bl {
    bottom: -2px;
    left: -2px;
    border-bottom-width: 4px;
    border-left-width: 4px;
    border-radius: 0 0 0 2px;
}

.scanner-frame .corner-br {
    bottom: -2px;
    right: -2px;
    border-bottom-width: 4px;
    border-right-width: 4px;
    border-radius: 0 0 2px 0;
}

.scanner-line {
    position: absolute;
    top: 20%;
    left: 10%;
    right: 10%;
    height: 2px;
    background: var(--color-primary);
    animation: scanLine 2s ease-in-out infinite;
    opacity: 0.6;
    box-shadow: 0 0 10px var(--color-primary);
}

@keyframes scanLine {
    0%, 100% { top: 20%; }
    50% { top: 75%; }
}

.scanner-controls {
    position: absolute;
    bottom: 16px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    padding: 0 var(--spacing-md);
    pointer-events: none;
}

.scanner-controls button {
    pointer-events: auto;
    background: rgba(0,0,0,0.6);
    color: #fff;
    border: none;
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 20px;
    cursor: pointer;
    transition: background 0.2s ease;
}

.scanner-controls button:active {
    background: rgba(0,0,0,0.8);
}

/* ============================================
   BOTTOM SHEET
   ============================================ */
.bottom-sheet {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    max-height: 80vh;
    background: var(--color-surface);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(100%);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 100;
    overflow: hidden;
}

.bottom-sheet.open {
    transform: translateY(0);
}

.bottom-sheet-handle {
    width: 40px;
    height: 4px;
    background: var(--color-border);
    border-radius: 2px;
    margin: 12px auto 0;
}

.bottom-sheet-content {
    padding: var(--spacing-md);
    overflow-y: auto;
    max-height: calc(80vh - 40px);
}

.bottom-sheet-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 99;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.bottom-sheet-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

/* ============================================
   QUICK ACTION CHIPS
   ============================================ */
.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.chip {
    padding: 6px 16px;
    background: var(--color-background);
    border: 2px solid var(--color-border);
    border-radius: 20px;
    font-size: var(--font-size-small);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    touch-action: manipulation;
    user-select: none;
    min-height: 36px;
}

.chip:active {
    transform: scale(0.95);
}

.chip.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.chip.primary {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
}

.chip.danger {
    background: var(--color-danger);
    color: #fff;
    border-color: var(--color-danger);
}

/* ============================================
   STATUS BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 12px;
    font-size: var(--font-size-tiny);
    font-weight: 600;
    text-transform: uppercase;
}

.badge-success {
    background: #e8f5e9;
    color: var(--color-primary-dark);
}

.badge-warning {
    background: #fff3e0;
    color: var(--color-warning);
}

.badge-danger {
    background: #ffebee;
    color: var(--color-danger);
}

.badge-info {
    background: #e3f2fd;
    color: var(--color-secondary);
}

/* ============================================
   PIN PAD
   ============================================ */
.pin-pad {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-sm);
    max-width: 320px;
    margin: 0 auto;
}

.pin-pad button {
    height: 64px;
    font-size: 24px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--color-background);
    color: var(--color-text);
    cursor: pointer;
    transition: all 0.1s ease;
    touch-action: manipulation;
    user-select: none;
}

.pin-pad button:active {
    background: var(--color-border);
    transform: scale(0.95);
}

.pin-pad .pin-delete {
    background: transparent;
    color: var(--color-text-secondary);
}

.pin-pad .pin-submit {
    background: var(--color-primary);
    color: #fff;
}

.pin-pad .pin-submit:active {
    background: var(--color-primary-dark);
}

.pin-display {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.pin-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--color-border);
    transition: all 0.2s ease;
}

.pin-dot.filled {
    background: var(--color-text);
    border-color: var(--color-text);
}

/* ============================================
   SEARCH RESULTS
   ============================================ */
.search-result {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: all 0.2s ease;
    gap: var(--spacing-md);
    touch-action: manipulation;
}

.search-result:active {
    transform: scale(0.98);
    background: var(--color-background);
}

.search-result .icon {
    font-size: 24px;
    width: 40px;
    text-align: center;
}

.search-result .info {
    flex: 1;
}

.search-result .info .title {
    font-weight: 600;
}

.search-result .info .subtitle {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
}

.search-result .badge {
    flex-shrink: 0;
}

/* ============================================
   SYNC QUEUE
   ============================================ */
.queue-item {
    display: flex;
    align-items: center;
    padding: var(--spacing-md);
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
    gap: var(--spacing-md);
}

.queue-item .status {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.queue-item .status.pending {
    background: var(--color-warning);
    animation: pulse 1.5s ease-in-out infinite;
}

.queue-item .status.failed {
    background: var(--color-danger);
}

.queue-item .status.success {
    background: var(--color-primary);
}

@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(0.8); }
}

.queue-item .info {
    flex: 1;
}

.queue-item .info .title {
    font-weight: 500;
}

.queue-item .info .subtitle {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
}

/* ============================================
   DUAL ACTION TILES (Leftover Decision)
   ============================================ */
.action-tiles {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.action-tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg);
    border: 3px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    cursor: pointer;
    transition: all 0.2s ease;
    min-height: 120px;
    gap: var(--spacing-sm);
    touch-action: manipulation;
    user-select: none;
}

.action-tile:active {
    transform: scale(0.97);
}

.action-tile .icon {
    font-size: 36px;
}

.action-tile .label {
    font-weight: 600;
    font-size: var(--font-size-body);
}

.action-tile .description {
    font-size: var(--font-size-small);
    color: var(--color-text-secondary);
    text-align: center;
}

.action-tile.selected-keep {
    border-color: var(--color-primary);
    background: #e8f5e9;
}

.action-tile.selected-scrap {
    border-color: var(--color-danger);
    background: #ffebee;
}

/* ============================================
   LOADING & EMPTY STATES
   ============================================ */
.loading-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
    gap: var(--spacing-md);
}

.loading-state .spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.empty-state {
    text-align: center;
    padding: var(--spacing-xl);
    color: var(--color-text-secondary);
}

.empty-state .icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
}