/* ===================================================
   MeigaCut - Estilos
   =================================================== */

/* ---------- Reset & Variables ---------- */
:root {
    --bg-primary: #0f1419;
    --bg-secondary: #1a1f29;
    --bg-tertiary: #232a37;
    --bg-canvas: #2a3142;
    --border: #2d3548;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --text-muted: #6c7280;
    --accent: #7c5cff;
    --accent-hover: #9277ff;
    --success: #34a853;
    --success-hover: #4cc66b;
    --danger: #ea4335;
    --danger-hover: #ff5247;
    --warning: #fbbc04;
    --selection-color: rgba(124, 92, 255, 0.25);
    --selection-border: #7c5cff;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --radius: 8px;
    --transition: 0.2s ease;
}

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

html,
body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
        Ubuntu, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
}

/* ---------- Header ---------- */
.app-header {
    padding: 16px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: baseline;
    gap: 16px;
}

.app-header h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--accent);
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-icon {
    flex-shrink: 0;
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.app-header .subtitle {
    font-size: 13px;
    color: var(--text-secondary);
}

/* ---------- Main Layout ---------- */
.app-main {
    display: grid;
    grid-template-columns: 1fr 320px;
    height: calc(100vh - 65px);
}

/* ---------- Canvas Section ---------- */
.canvas-section {
    display: flex;
    flex-direction: column;
    padding: 16px;
    background: var(--bg-primary);
    overflow: hidden;
}

/* ---------- Drop Zone ---------- */
.drop-zone {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    transition: var(--transition);
}

.drop-zone.drag-over {
    border-color: var(--accent);
    background: rgba(124, 92, 255, 0.05);
}

.drop-zone-content {
    text-align: center;
    color: var(--text-secondary);
}

.drop-icon {
    width: 64px;
    height: 64px;
    color: var(--accent);
    margin-bottom: 16px;
}

.drop-zone-content h2 {
    font-size: 18px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.drop-zone-content p {
    margin: 12px 0;
    font-size: 14px;
}

/* ---------- Canvas Container ---------- */
.canvas-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
    min-height: 0;
}

.canvas-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    gap: 12px;
    flex-wrap: wrap;
}

/* ---------- Mode buttons ---------- */
.mode-buttons {
    display: inline-flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    padding: 2px;
    border: 1px solid var(--border);
}

.btn-mode {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 6px 12px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-mode:hover:not(.active) {
    color: var(--text-primary);
    background: var(--bg-canvas);
}

.btn-mode.active {
    background: var(--accent);
    color: white;
}

.btn-mode svg {
    width: 16px;
    height: 16px;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    padding: 6px 12px;
}

.btn-icon svg {
    width: 14px;
    height: 14px;
}

/* ---------- Toggle switch (Quitar fondo) ---------- */
.toggle-label {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 6px 10px;
    border-radius: var(--radius);
    transition: background var(--transition);
    user-select: none;
}
.toggle-label:hover {
    background: rgba(255, 255, 255, 0.06);
}
.toggle-label input {
    display: none;
}
.toggle-switch {
    position: relative;
    width: 32px;
    height: 18px;
    background: var(--border);
    border-radius: 9px;
    transition: background var(--transition);
    flex-shrink: 0;
}
.toggle-switch::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 12px;
    height: 12px;
    background: #fff;
    border-radius: 50%;
    transition: transform var(--transition);
}
.toggle-label input:checked + .toggle-switch {
    background: var(--accent);
}
.toggle-label input:checked + .toggle-switch::after {
    transform: translateX(14px);
}
.toggle-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.toolbar-info {
    display: flex;
    gap: 8px;
}

.info-badge {
    font-size: 12px;
    padding: 4px 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.canvas-wrapper {
    flex: 1;
    position: relative;
    background: var(--bg-canvas);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 0;
    /* Checker pattern to highlight transparency */
    background-image: linear-gradient(45deg, #2a3142 25%, transparent 25%),
        linear-gradient(-45deg, #2a3142 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #2a3142 75%),
        linear-gradient(-45deg, transparent 75%, #2a3142 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0;
}

#canvas {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    cursor: crosshair;
    user-select: none;
    touch-action: none;
    display: block;
}

.canvas-area {
    position: relative;
    display: inline-flex;
    line-height: 0;
    max-width: 100%;
    max-height: 100%;
    touch-action: none;
}

.canvas-area #canvas {
    /* El canvas determina el tamaño del contenedor */
    max-width: 100%;
    max-height: 100%;
}

.canvas-placeholder {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--text-muted);
    pointer-events: none;
    text-align: center;
    background: rgba(15, 20, 25, 0.85);
    padding: 12px 20px;
    border-radius: var(--radius);
}

/* ---------- Selection Box (overlay) ---------- */
.selection-box {
    position: absolute;
    border: 2px dashed var(--selection-border);
    background: var(--selection-color);
    pointer-events: none;
    box-shadow: 0 0 0 1px rgba(124, 92, 255, 0.3);
}

/* ---------- Grid Boundary (modo malla) ---------- */
.grid-boundary {
    position: absolute;
    border: 2px solid rgba(124, 92, 255, 0.5);
    pointer-events: none;
    z-index: 1;
}

/* Handles de redimensionado (8 puntos) */
.sel-handle {
    position: absolute;
    width: 10px;
    height: 10px;
    background: white;
    border: 2px solid var(--accent);
    border-radius: 2px;
    pointer-events: auto;
    touch-action: none;
    box-sizing: border-box;
    transform: translate(-50%, -50%);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.sel-handle:hover {
    background: var(--accent);
}

.sel-handle-nw { top: 0;    left: 0;    cursor: nwse-resize; }
.sel-handle-n  { top: 0;    left: 50%;  cursor: ns-resize; }
.sel-handle-ne { top: 0;    left: 100%; cursor: nesw-resize; }
.sel-handle-e  { top: 50%;  left: 100%; cursor: ew-resize; }
.sel-handle-se { top: 100%; left: 100%; cursor: nwse-resize; }
.sel-handle-s  { top: 100%; left: 50%;  cursor: ns-resize; }
.sel-handle-sw { top: 100%; left: 0;    cursor: nesw-resize; }
.sel-handle-w  { top: 50%;  left: 0;    cursor: ew-resize; }

/* Estado de redimensionado activo: cursor fijo en todo el documento */
body.is-resizing,
body.is-resizing * {
    cursor: inherit !important;
}

/* ---------- Status Bar ---------- */
.status-bar {
    display: flex;
    justify-content: space-between;
    padding: 6px 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-secondary);
    font-family: "Courier New", monospace;
}

/* ---------- Sidebar ---------- */
.sidebar {
    background: var(--bg-secondary);
    border-left: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 16px;
    font-weight: 500;
}

.badge {
    background: var(--accent);
    color: white;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 12px;
    font-weight: 600;
    min-width: 24px;
    text-align: center;
}

.sidebar-actions {
    padding: 12px 16px;
    display: flex;
    gap: 8px;
    border-bottom: 1px solid var(--border);
}

.sidebar-actions .btn {
    flex: 1;
    font-size: 12px;
    padding: 8px 12px;
}

/* ---------- Sticker List ---------- */
.sticker-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sticker-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    animation: slideIn 0.2s ease;
}

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

.sticker-item:hover {
    border-color: var(--accent);
    transform: translateX(-2px);
}

.sticker-thumb {
    width: 48px;
    height: 48px;
    object-fit: contain;
    background: var(--bg-canvas);
    border-radius: 4px;
    flex-shrink: 0;
    /* Checker pattern to show transparency */
    background-image: linear-gradient(45deg, #444 25%, transparent 25%),
        linear-gradient(-45deg, #444 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #444 75%),
        linear-gradient(-45deg, transparent 75%, #444 75%);
    background-size: 12px 12px;
    background-position: 0 0, 0 6px, 6px -6px, -6px 0;
}

.sticker-info {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sticker-name {
    font-size: 12px;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sticker-size {
    font-size: 10px;
    color: var(--text-muted);
    font-family: "Courier New", monospace;
}

.sticker-actions {
    display: flex;
    gap: 4px;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--bg-canvas);
    color: var(--text-primary);
}

.icon-btn.delete:hover {
    background: rgba(234, 67, 53, 0.15);
    color: var(--danger);
}

.icon-btn svg {
    width: 16px;
    height: 16px;
}

/* ---------- Empty State ---------- */
.empty-state {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 13px;
}

.empty-state .hint {
    font-size: 12px;
    margin-top: 8px;
    color: var(--text-muted);
    opacity: 0.7;
}

/* ---------- Buttons ---------- */
.btn {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    padding: 8px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    font-family: inherit;
}

.btn:hover:not(:disabled) {
    background: var(--bg-canvas);
    transform: translateY(-1px);
}

.btn:active:not(:disabled) {
    transform: translateY(0);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
}

.btn-success {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.btn-success:hover:not(:disabled) {
    background: var(--success-hover);
    border-color: var(--success-hover);
}

.btn-danger {
    background: var(--danger);
    color: white;
    border-color: var(--danger);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger-hover);
    border-color: var(--danger-hover);
}

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

/* ---------- Modal ---------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(2px);
    animation: fadeIn 0.18s ease;
}

.modal-content {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    animation: modalIn 0.2s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-content h2 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.modal-hint {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.form-row {
    display: flex;
    gap: 12px;
    margin-bottom: 12px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.form-group {
    margin-bottom: 12px;
}

.form-group label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px 12px;
    font-size: 14px;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(124, 92, 255, 0.2);
}

.form-group input[type="number"] {
    -moz-appearance: textfield;
}

.form-group input[type="number"]::-webkit-outer-spin-button,
.form-group input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.modal-actions {
    display: flex;
    gap: 8px;
    justify-content: flex-end;
    margin-top: 20px;
}

/* Variante centrada (para confirmaciones) */
.modal-content-center {
    text-align: center;
}

.modal-title-center {
    text-align: center;
}

.modal-hint-center {
    text-align: center;
    margin-bottom: 4px;
}

.modal-actions-center {
    justify-content: center;
}

.modal-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.modal-icon svg {
    width: 28px;
    height: 28px;
}

.modal-icon-warning {
    background: rgba(234, 67, 53, 0.15);
    color: var(--danger);
}

.modal-icon-info {
    background: rgba(124, 92, 255, 0.15);
    color: var(--accent);
}

/* ---------- Toast Notifications ---------- */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    padding: 12px 20px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    font-size: 13px;
    opacity: 0;
    transition: var(--transition);
    z-index: 1000;
    pointer-events: none;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

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

.toast.success {
    border-color: var(--success);
    color: var(--success);
}

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border);
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
    .app-main {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr 280px;
    }

    .sidebar {
        border-left: none;
        border-top: 1px solid var(--border);
    }
}