/* Design system for Repón */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

:root {
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Harmonious Slate/Teal color palette */
    --bg-app: #0f172a;
    --bg-card: rgba(30, 41, 59, 0.7);
    --bg-card-hover: rgba(30, 41, 59, 0.9);
    --border-color: rgba(255, 255, 255, 0.08);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent: #0ea5e9; /* Sky Blue */
    --accent-gradient: linear-gradient(135deg, #0ea5e9 0%, #2563eb 100%);
    --success: #10b981; /* Emerald */
    --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-app: #f8fafc;
        --bg-card: rgba(255, 255, 255, 0.8);
        --bg-card-hover: rgba(255, 255, 255, 0.95);
        --border-color: rgba(0, 0, 0, 0.06);
        --text-primary: #0f172a;
        --text-secondary: #475569;
        --text-muted: #94a3b8;
        --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -2px rgba(0, 0, 0, 0.02);
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 1rem;
    overflow-x: hidden;
    transition: background-color var(--transition-normal);
}

/* Header container */
header {
    width: 100%;
    max-width: 500px;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.5rem 0.25rem;
}

h1 {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.025em;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Tabs navigation for stores */
.tabs {
    display: flex;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    padding: 4px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    margin-bottom: 1rem;
    box-shadow: var(--shadow-md);
}

.tab-btn {
    flex: 1;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    padding: 10px 16px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    text-align: center;
    text-transform: capitalize;
}

.tab-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: var(--shadow-sm);
}

/* Main list wrapper */
.list-container {
    width: 100%;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
    background: var(--bg-card);
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-lg);
}

.empty-state svg {
    margin-bottom: 1rem;
    color: var(--text-muted);
    opacity: 0.5;
}

/* Checklist items */
.item-card {
    display: flex;
    align-items: center;
    background: var(--bg-card);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

/* Touch targets must be generous */
.item-card label {
    display: flex;
    align-items: center;
    gap: 1rem;
    width: 100%;
    cursor: pointer;
    user-select: none;
    min-height: 48px; /* High tactile height for supermarket scanning */
}

/* Standard Checkbox replacement */
.item-card input[type="checkbox"] {
    appearance: none;
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border: 2px solid var(--text-muted);
    border-radius: 6px;
    background: transparent;
    display: inline-grid;
    place-content: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.item-card input[type="checkbox"]::before {
    content: "";
    width: 12px;
    height: 12px;
    transform: scale(0);
    transition: 120ms transform ease-in-out;
    background-color: white;
    transform-origin: center;
    clip-path: polygon(14% 44%, 0 65%, 50% 100%, 100% 16%, 80% 0%, 43% 62%);
}

.item-card input[type="checkbox"]:checked {
    background: var(--success-gradient);
    border-color: transparent;
}

.item-card input[type="checkbox"]:checked::before {
    transform: scale(1);
}

.item-text {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--text-primary);
    transition: all var(--transition-normal);
    flex-grow: 1;
}

.item-qty {
    background: rgba(14, 165, 233, 0.15);
    color: var(--accent);
    font-size: 0.85rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 12px;
    margin-left: 0.5rem;
    border: 1px solid rgba(14, 165, 233, 0.3);
}

/* Checked styling */
.item-card.checked {
    opacity: 0.5;
    background: rgba(30, 41, 59, 0.3);
}

.item-card.checked .item-text {
    text-decoration: line-through;
    color: var(--text-muted);
}

.item-card.checked .item-qty {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border-color: transparent;
}

/* Actions and Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 10px 18px;
    font-family: var(--font-sans);
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    width: 100%;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: scale(0.98);
}

.btn-secondary {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

.btn-danger {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    color: #ffffff;
}

/* Confirm layout (NFC Tap page) */
.confirm-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 400px;
    margin-top: 15vh;
    box-shadow: var(--shadow-lg);
}

.success-badge {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(16, 185, 129, 0.15);
    border-radius: 50%;
    margin-bottom: 1.5rem;
    color: var(--success);
}

.confirm-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.confirm-details {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.undo-button-container {
    width: 100%;
}

/* Admin Dashboard CSS */
.admin-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    width: 100%;
    max-width: 500px;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.form-control {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 12px 16px;
    font-family: var(--font-sans);
    font-size: 1rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px rgba(14, 165, 233, 0.2);
}

.tag-list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding: 10px 0;
}

.tag-list-item:last-child {
    border-bottom: none;
}

.url-box {
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: var(--radius-md);
    font-family: monospace;
    font-size: 0.85rem;
    overflow-x: auto;
    white-space: nowrap;
    margin-top: 1rem;
    color: var(--accent);
    position: relative;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 4px;
    text-transform: uppercase;
}

.badge-mercadona {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.badge-carrefour {
    background: rgba(14, 165, 233, 0.15);
    color: var(--accent);
}

.clear-btn-container {
    width: 100%;
    max-width: 500px;
    margin-bottom: 1rem;
    display: flex;
    justify-content: flex-end;
}

.btn-link {
    background: transparent;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
    text-decoration: underline;
    cursor: pointer;
    border: none;
    padding: 4px 8px;
}

.btn-link:hover {
    color: var(--text-secondary);
}