/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Apple-inspired Colors - Light Mode */
    --primary-bg: #f5f5f7;
    --secondary-bg: #ffffff;
    --tertiary-bg: #fafafa;
    --accent-color: #0071e3;
    --accent-hover: #0077ed;
    --text-primary: #1d1d1f;
    --text-secondary: #6e6e73;
    --border-color: #d2d2d7;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.16);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Rarity Colors */
    --common: #8e8e93;
    --uncommon: #34c759;
    --rare: #007aff;
    --holo-rare: #af52de;
    --ultra-rare: #ff9500;
    --secret-rare: #ff3b30;
}

/* Dark Mode */
[data-theme="dark"] {
    --primary-bg: #000000;
    --secondary-bg: #1c1c1e;
    --tertiary-bg: #2c2c2e;
    --accent-color: #0a84ff;
    --accent-hover: #409cff;
    --text-primary: #ffffff;
    --text-secondary: #98989d;
    --border-color: #38383a;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);

    /* Rarity Colors - Adjusted for dark mode */
    --common: #98989d;
    --uncommon: #32d74b;
    --rare: #0a84ff;
    --holo-rare: #bf5af2;
    --ultra-rare: #ff9f0a;
    --secret-rare: #ff453a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display", "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
    background: var(--primary-bg);
    color: var(--text-primary);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.header-content {
    text-align: center;
    flex: 1;
}

.app-title {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    margin-bottom: 0.25rem;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* Theme Toggle Button */
.theme-toggle {
    position: absolute;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.2rem;
}

.theme-toggle:hover {
    background: var(--tertiary-bg);
    border-color: var(--accent-color);
    color: var(--accent-color);
    transform: translateY(-50%) scale(1.1);
}

.theme-toggle:active {
    transform: translateY(-50%) scale(0.95);
}

/* Navigation */
.nav-bar {
    background: var(--secondary-bg);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s ease;
}

.nav-item:hover {
    background: var(--tertiary-bg);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--accent-color);
    color: white;
}

.nav-item svg {
    width: 18px;
    height: 18px;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
}

.view {
    display: none;
}

.view.active {
    display: block;
}

/* Toolbar */
.toolbar {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.search-bar {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--tertiary-bg);
    border-radius: var(--radius-sm);
    padding: 0.625rem 1rem;
}

.search-bar svg {
    color: var(--text-secondary);
    flex-shrink: 0;
}

.search-bar input {
    flex: 1;
    border: none;
    background: transparent;
    font-size: 0.9375rem;
    outline: none;
    color: var(--text-primary);
}

.search-bar input::placeholder {
    color: var(--text-secondary);
}

.filter-select {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--secondary-bg);
    font-size: 0.9375rem;
    color: var(--text-primary);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.filter-select:hover {
    border-color: var(--accent-color);
}

.filter-select:focus {
    outline: none;
    border-color: var(--accent-color);
}

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9375rem;
}

.stat-label {
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 600;
    color: var(--text-primary);
}

/* Cards Grid */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 1.5rem;
    padding: 0.5rem;
}

.card-item {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.card-item:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.card-item.in-collection {
    border-color: var(--accent-color);
    border-width: 2px;
}

.card-image {
    position: relative;
    aspect-ratio: 2.5 / 3.5;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f5f7 0%, #e8e8ed 100%);
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.card-item:hover .card-image img {
    transform: scale(1.05);
}

.collection-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    background: var(--accent-color);
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(0, 113, 227, 0.3);
}

.quantity-badge {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.75);
    backdrop-filter: blur(10px);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.875rem;
    font-weight: 600;
}

.card-info {
    padding: 1rem;
}

.card-number {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.card-name {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.card-rarity {
    font-size: 0.8125rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    display: inline-block;
}

.card-rarity.common { background: rgba(142, 142, 147, 0.1); color: var(--common); }
.card-rarity.uncommon { background: rgba(52, 199, 89, 0.1); color: var(--uncommon); }
.card-rarity.rare { background: rgba(0, 122, 255, 0.1); color: var(--rare); }
.card-rarity.holo_rare { background: rgba(175, 82, 222, 0.1); color: var(--holo-rare); }
.card-rarity.ultra_rare { background: rgba(255, 149, 0, 0.1); color: var(--ultra-rare); }
.card-rarity.secret_rare { background: rgba(255, 59, 48, 0.1); color: var(--secret-rare); }

.card-condition {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Collection View */
.collection-header {
    margin-bottom: 2rem;
}

.collection-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.collection-stats {
    display: flex;
    gap: 1rem;
}

.stat-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: var(--shadow-sm);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    line-height: 1;
}

.stat-text {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

/* Progress View */
.progress-header {
    margin-bottom: 2rem;
}

.progress-header h2 {
    font-size: 1.75rem;
    font-weight: 700;
}

.progress-cards {
    display: grid;
    gap: 1.5rem;
}

.progress-card {
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.progress-card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.progress-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
}

.progress-bar {
    height: 12px;
    background: var(--tertiary-bg);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent-color), var(--accent-hover));
    border-radius: 6px;
    transition: width 0.6s ease;
}

.progress-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    z-index: 1000;
    padding: 2rem;
    overflow-y: auto;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--secondary-bg);
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 32px;
    height: 32px;
    border: none;
    background: var(--tertiary-bg);
    border-radius: 50%;
    font-size: 1.5rem;
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    z-index: 1;
}

.modal-close:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.modal-body {
    display: flex;
    gap: 2rem;
    padding: 2rem;
}

.modal-image {
    flex-shrink: 0;
    width: 300px;
}

.modal-image img {
    width: 100%;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.modal-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.modal-info h2 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.card-details {
    margin-top: 1.5rem;
    margin-bottom: 2rem;
}

.detail-row {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border-color);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    font-weight: 600;
    width: 100px;
    color: var(--text-secondary);
}

.modal-actions {
    margin-top: auto;
}

.btn-primary {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.2s ease;
}

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

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-danger {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: #ff3b30;
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: background 0.2s ease;
}

.btn-danger:hover:not(:disabled) {
    background: #ff453a;
}

.btn-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Loading */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem;
    color: var(--text-secondary);
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 1rem;
}

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

/* Empty States */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--text-secondary);
}

.empty-state svg {
    margin-bottom: 1rem;
}

.empty-state p {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
}

.empty-hint {
    font-size: 0.9375rem;
    color: var(--text-secondary);
}

.no-cards, .error-message {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Notifications */
.notification {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--secondary-bg);
    border: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-weight: 500;
    z-index: 2000;
    opacity: 0;
    transition: all 0.3s ease;
}

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

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

.notification.error {
    border-color: var(--secret-rare);
    color: var(--secret-rare);
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        padding: 0;
    }

    .header {
        padding: 1rem;
    }

    .app-title {
        font-size: 1.5rem;
    }

    .main-content {
        padding: 1rem;
    }

    .toolbar {
        flex-direction: column;
    }

    .cards-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: 1rem;
    }

    .modal-body {
        flex-direction: column;
    }

    .modal-image {
        width: 100%;
    }

    .collection-stats {
        flex-direction: column;
    }

    .nav-item span {
        display: none;
    }
}