:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-hover: rgba(51, 65, 85, 0.9);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent: #38bdf8;
    --accent-hover: #0ea5e9;
    --border: rgba(255, 255, 255, 0.1);
    --danger: #ef4444;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-color);
    background-image: radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.1) 0%, transparent 20%),
                      radial-gradient(circle at 90% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 20%);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 2rem;
}

header { max-width: 1000px; margin: 0 auto 3rem; text-align: center; }
h1 { font-size: 2rem; margin-bottom: 1.5rem; font-weight: 700; }

.controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: nowrap;
    width: 100%;
    max-width: 500px;
    margin: 0 auto;
}

#searchInput {
    padding: 0.8rem 1.2rem;
    font-size: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    outline: none;
    flex: 1;
    min-width: 0;
    max-width: 300px;
    backdrop-filter: blur(10px);
}

#searchInput:focus { border-color: var(--accent); }

.btn-secondary, .btn-primary {
    padding: 0.8rem 1.2rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text-primary);
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn-primary { background: var(--accent); color: #0f172a; border: none; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary:hover { background: var(--card-hover); }

main { max-width: 1000px; margin: 0 auto; }

.category { margin-bottom: 3rem; position: relative; }

.category-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.category h2 {
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.85rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 1.5rem;
}

.card {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(10px);
    position: relative;
}

.card:hover {
    background: var(--card-hover);
    transform: translateY(-4px);
    border-color: var(--accent);
}

.card .icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
    color: var(--accent);
}

.card span { font-weight: 500; }

.edit-mode .add-card {
    display: flex;
    border: 2px dashed var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
}

.edit-mode .add-card:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* ========================================== */
/* BOTONES DE ACCIÓN (▲ ▼ 📁 ×)               */
/* ========================================== */
.card-actions, .category-actions {
    position: absolute;
    display: flex;
    gap: 4px;
    z-index: 10;
}

.card-actions {
    top: 6px;
    right: 6px;
}

.category-actions {
    position: relative;
    top: auto;
    right: auto;
}

.action-btn {
    width: 28px;
    height: 28px;
    border-radius: 6px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: 600;
    transition: all 0.15s;
    backdrop-filter: blur(10px);
    padding: 0;
    line-height: 1;
}

.action-btn:hover:not(:disabled) {
    background: var(--accent);
    color: #0f172a;
    border-color: var(--accent);
    transform: scale(1.1);
}

.action-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.action-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.action-btn-danger {
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

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

/* En modo normal, ocultar acciones */
.card-actions, .category-actions {
    display: none;
}

.edit-mode .card-actions,
.edit-mode .category-actions {
    display: flex;
}

/* Ajustar padding de tarjeta en modo edición para que los botones no tapen el icono */
.edit-mode .card {
    padding-top: 2.5rem;
}

/* ========================================== */
/* MODALES                                    */
/* ========================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(5px);
    z-index: 1000;
}

.modal.hidden { display: none; }

.modal-content {
    background: var(--bg-color);
    border: 1px solid var(--border);
    padding: 2rem;
    border-radius: 16px;
    width: 90%;
    max-width: 400px;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-content input {
    width: 100%;
    padding: 0.8rem;
    margin: 0.5rem 0 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
}

.modal-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1rem;
}

/* Icon Picker */
.icon-picker {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 6px;
    margin: 8px 0 1rem;
    max-height: 300px;
    overflow-y: auto;
    padding: 4px;
}

.icon-option {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-secondary);
}

.icon-option svg { width: 20px; height: 20px; }
.icon-option:hover { background: var(--card-hover); color: var(--text-primary); }
.icon-option.selected {
    background: var(--accent);
    color: #0f172a;
    border-color: var(--accent);
}

/* Category List (Move Modal) */
.category-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.category-option {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
}

.category-option:hover:not(.current) {
    background: var(--card-hover);
    border-color: var(--accent);
    transform: translateX(4px);
}

.category-option.current {
    opacity: 0.4;
    cursor: not-allowed;
    position: relative;
}

.category-option.current::after {
    content: '(actual)';
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-left: 8px;
}

.cat-name {
    font-weight: 500;
    color: var(--text-primary);
}

.cat-count {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.hidden { display: none !important; }

/* ========================================== */
/* RESPONSIVE                                 */
/* ========================================== */
@media (max-width: 400px) {
    body { padding: 1rem; }
    .controls { gap: 0.5rem; }
    #searchInput { padding: 0.7rem 1rem; font-size: 0.9rem; }
    .btn-secondary, .btn-primary { padding: 0.7rem 0.9rem; font-size: 0.85rem; }
    header h1 { font-size: 1.5rem; }
    .grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 1rem; }
    .card { padding: 1rem; }
    .edit-mode .card { padding-top: 2.5rem; }
    .action-btn { width: 26px; height: 26px; font-size: 11px; }
}