/* ============================================
   Design Tokens
   ============================================ */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.7);
    --bg-card-hover: rgba(30, 41, 59, 0.8);
    --border-color: rgba(99, 102, 241, 0.15);
    --border-glow: rgba(99, 102, 241, 0.3);
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent: #6366f1;
    --accent-light: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.25);
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.1);
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.1);
    --error: #ef4444;
    --error-bg: rgba(239, 68, 68, 0.1);
    --change-up: #22c55e;
    --change-up-bg: rgba(34, 197, 94, 0.1);
    --change-down: #ef4444;
    --change-down-bg: rgba(239, 68, 68, 0.1);
    --radius: 16px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.4);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --font-main: 'Inter', 'Noto Sans JP', sans-serif;
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    background-image:
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(59, 130, 246, 0.05) 0%, transparent 50%);
    background-attachment: fixed;
}

/* ============================================
   Header
   ============================================ */
.app-header {
    background: rgba(17, 24, 39, 0.6);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 8px var(--accent-glow));
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-light) 0%, #a78bfa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-top: 0.25rem;
    margin-left: 3.1rem;
}

/* ============================================
   Container
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ============================================
   Card
   ============================================ */
.card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    animation: fadeSlideIn 0.4s ease-out;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.card-icon {
    font-size: 1.3rem;
}

.card-header h2 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Drop Zone
   ============================================ */
.drop-zone {
    border: 2px dashed var(--border-glow);
    border-radius: var(--radius-sm);
    padding: 3rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    background: rgba(99, 102, 241, 0.03);
}

.drop-zone.dragover {
    border-color: var(--accent);
    background: var(--accent-glow);
    transform: scale(1.01);
    box-shadow: 0 0 30px var(--accent-glow);
}

.drop-zone:hover {
    border-color: var(--accent-light);
    background: rgba(99, 102, 241, 0.06);
}

.drop-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.7;
}

.drop-text {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.drop-hint {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-bottom: 1rem;
}

.file-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.5rem;
    background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-main);
}

.file-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.4);
}

/* ============================================
   Source Notice
   ============================================ */
.source-notice {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
    padding: 1rem 1.25rem;
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(251, 191, 36, 0.08) 100%);
    border: 1px solid rgba(245, 158, 11, 0.25);
    border-left: 4px solid var(--warning);
    border-radius: var(--radius-sm);
    font-size: 0.88rem;
    color: var(--text-primary);
    line-height: 1.6;
}

.notice-icon {
    font-size: 1.3rem;
    flex-shrink: 0;
    margin-top: 0.05rem;
}

.source-notice a {
    color: var(--accent-light);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid rgba(129, 140, 248, 0.3);
    transition: var(--transition);
}

.source-notice a:hover {
    color: #a5b4fc;
    border-bottom-color: var(--accent-light);
}

/* ============================================
   File Info
   ============================================ */
.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid var(--border-glow);
    border-radius: var(--radius-sm);
    animation: fadeSlideIn 0.3s ease-out;
}

.file-info-details {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.file-icon {
    font-size: 2rem;
}

.file-name {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.file-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.15rem;
}

.btn-remove {
    background: rgba(239, 68, 68, 0.1);
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
    border-radius: 8px;
    width: 36px;
    height: 36px;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove:hover {
    background: rgba(239, 68, 68, 0.2);
    transform: scale(1.1);
}

/* ============================================
   Action Buttons
   ============================================ */
.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    font-family: var(--font-main);
    letter-spacing: -0.01em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
    color: white;
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

.btn-success {
    background: linear-gradient(135deg, var(--success) 0%, #059669 100%);
    color: white;
    box-shadow: 0 2px 12px rgba(16, 185, 129, 0.3);
}

.btn-success:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(16, 185, 129, 0.5);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn.loading {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.7;
    }
}

/* ============================================
   Progress
   ============================================ */
.progress-container {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.progress-bar {
    height: 8px;
    background: rgba(99, 102, 241, 0.15);
    border-radius: 99px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent) 0%, #a78bfa 50%, var(--accent) 100%);
    background-size: 200% 100%;
    border-radius: 99px;
    width: 0%;
    transition: width 0.4s ease-out;
    animation: shimmer 2s ease-in-out infinite;
}

@keyframes shimmer {
    0% {
        background-position: 200% 0;
    }

    100% {
        background-position: -200% 0;
    }
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.progress-detail {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================================
   Stats Grid
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
}

.stat-card {
    padding: 1.25rem;
    border-radius: var(--radius-sm);
    text-align: center;
    border: 1px solid transparent;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-2px);
}

.stat-success {
    background: var(--success-bg);
    border-color: rgba(16, 185, 129, 0.2);
}

.stat-warning {
    background: var(--warning-bg);
    border-color: rgba(245, 158, 11, 0.2);
}

.stat-error {
    background: var(--error-bg);
    border-color: rgba(239, 68, 68, 0.2);
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    line-height: 1;
    margin-bottom: 0.35rem;
}

.stat-success .stat-value {
    color: var(--success);
}

.stat-warning .stat-value {
    color: var(--warning);
}

.stat-error .stat-value {
    color: var(--error);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* ============================================
   Error Log
   ============================================ */
.error-log {
    max-height: 200px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.error-entry {
    font-size: 0.8rem;
    color: var(--text-secondary);
    padding: 0.4rem 0.75rem;
    background: var(--error-bg);
    border-radius: 6px;
    border-left: 3px solid var(--error);
}

.error-code {
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   Table
   ============================================ */
.row-badge {
    margin-left: auto;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
    background: rgba(99, 102, 241, 0.1);
    padding: 0.25rem 0.75rem;
    border-radius: 99px;
}

.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
    white-space: nowrap;
}

.data-table thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table th {
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(8px);
    padding: 0.7rem 0.75rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    user-select: none;
    transition: var(--transition);
}

.data-table th:hover {
    color: var(--accent-light);
    background: rgba(40, 50, 70, 0.95);
}

.sort-indicator {
    font-size: 0.65rem;
    margin-left: 0.35rem;
    color: var(--accent-light);
}

.data-table td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid rgba(99, 102, 241, 0.06);
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: background 0.15s ease;
}

.data-table tbody tr:hover {
    background: rgba(99, 102, 241, 0.06);
}

.data-table tbody tr:nth-child(even) {
    background: rgba(99, 102, 241, 0.02);
}

.data-table tbody tr:nth-child(even):hover {
    background: rgba(99, 102, 241, 0.06);
}

/* Price cells */
.price-cell {
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.has-price {
    font-weight: 500;
}

.no-price {
    color: var(--text-muted);
    font-style: italic;
}

/* Change coloring */
.change-up {
    color: var(--change-up) !important;
    font-weight: 600 !important;
}

.change-down {
    color: var(--change-down) !important;
    font-weight: 600 !important;
}

/* ============================================
   Footer
   ============================================ */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-color);
    margin-top: 2rem;
}

/* ============================================
   Scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.2);
    border-radius: 99px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.4);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .card {
        padding: 1.25rem;
    }

    .drop-zone {
        padding: 2rem 1rem;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
    }

    .btn {
        justify-content: center;
    }

    .logo h1 {
        font-size: 1.2rem;
    }

    .subtitle {
        font-size: 0.75rem;
        margin-left: 2.5rem;
    }
}