/* ==========================================================================
   Design Tokens & CSS Variables
   ========================================================================== */
:root {
    /* Brand Colors */
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-primary-light: #eff6ff;
    
    --color-success: #10b981;
    --color-success-hover: #059669;
    --color-success-light: #ecfdf5;

    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --color-danger-light: #fef2f2;

    --color-warning: #f59e0b;
    --color-warning-light: #fffbeb;

    --color-purple: #8b5cf6;
    --color-purple-light: #f5f3ff;

    /* Medal Rank Colors */
    --rank-gold: #f59e0b;
    --rank-gold-bg: #fef3c7;
    --rank-gold-border: #fde68a;

    --rank-silver: #64748b;
    --rank-silver-bg: #f1f5f9;
    --rank-silver-border: #cbd5e1;

    --rank-bronze: #d97706;
    --rank-bronze-bg: #ffedd5;
    --rank-bronze-border: #fed7aa;

    /* Neutral Colors */
    --bg-app: #f3f6fb;
    --bg-card: #ffffff;
    --border-color: #e2e8f0;
    --border-color-focus: #93c5fd;

    --text-main: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;

    /* Typography */
    --font-sans: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-display: 'Outfit', 'Pretendard', sans-serif;

    /* Elevation & Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
    --shadow-modal: 0 20px 25px -5px rgba(0, 0, 0, 0.12), 0 8px 10px -6px rgba(0, 0, 0, 0.08);

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.25s ease;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-app);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
}

button, input, select, textarea {
    font: inherit;
    color: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

/* ==========================================================================
   Layout Containers
   ========================================================================== */
.app-wrapper {
    max-width: 1080px;
    margin: 0 auto;
    padding: 24px 20px 48px;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.main-container {
    flex: 1;
    margin-top: 24px;
}

/* ==========================================================================
   Header Component
   ========================================================================== */
.app-header {
    background: var(--bg-card);
    border-radius: 20px;
    padding: 20px 28px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* 3D Cube Icon Animation */
.cube-icon {
    width: 44px;
    height: 44px;
    position: relative;
    transform: rotateX(-20deg) rotateY(25deg);
    transform-style: preserve-3d;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
    border-radius: 12px;
    box-shadow: 0 6px 12px rgba(59, 130, 246, 0.3);
    flex-shrink: 0;
}

.cube-icon::before {
    content: "🧊";
    font-size: 22px;
    line-height: 1;
}

.brand-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.02em;
}

.brand-subtitle {
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 2px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 18px;
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all var(--transition-fast);
    line-height: 1.2;
    user-select: none;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background-color: var(--color-primary);
    color: #ffffff;
    box-shadow: 0 4px 8px rgba(59, 130, 246, 0.25);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: 0 6px 12px rgba(59, 130, 246, 0.35);
}

.btn-success {
    background-color: var(--color-success);
    color: #ffffff;
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.25);
}

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

.btn-danger {
    background-color: var(--color-danger);
    color: #ffffff;
    box-shadow: 0 4px 8px rgba(239, 68, 68, 0.25);
}

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

.btn-secondary {
    background-color: #f1f5f9;
    color: var(--text-muted);
    border-color: var(--border-color);
}

.btn-secondary:hover {
    background-color: #e2e8f0;
    color: var(--text-main);
}

.btn-icon {
    padding: 10px;
    background-color: #f8fafc;
    color: var(--text-muted);
    border-color: var(--border-color);
    border-radius: 12px;
}

.btn-icon:hover {
    background-color: #f1f5f9;
    color: var(--color-primary);
}

/* Action Table Buttons */
.btn-table {
    padding: 6px 12px;
    font-size: 0.8125rem;
    border-radius: 8px;
    font-weight: 600;
}

.btn-edit {
    background-color: var(--color-primary-light);
    color: var(--color-primary);
    border: 1px solid #bfdbfe;
}

.btn-edit:hover {
    background-color: var(--color-primary);
    color: #ffffff;
}

.btn-delete {
    background-color: var(--color-danger-light);
    color: var(--color-danger);
    border: 1px solid #fecaca;
}

.btn-delete:hover {
    background-color: var(--color-danger);
    color: #ffffff;
}

/* ==========================================================================
   Table & Rankings Card
   ========================================================================== */
.table-card {
    background: var(--bg-card);
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.ranking-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
}

.ranking-table th {
    background-color: #f8fafc;
    padding: 16px 20px;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.ranking-table td {
    padding: 16px 20px;
    font-size: 0.9375rem;
    color: var(--text-main);
    border-bottom: 1px solid #f1f5f9;
    vertical-align: middle;
}

.ranking-table tbody tr {
    transition: background-color var(--transition-fast);
}

.ranking-table tbody tr:hover {
    background-color: #f8fafc;
}

.ranking-table tbody tr:last-child td {
    border-bottom: none;
}

/* Column Alignment & Specifics */
.col-rank {
    width: 90px;
    text-align: center;
}

.ranking-table td.col-rank {
    text-align: center;
}

.col-name {
    min-width: 160px;
}

.col-time {
    min-width: 130px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.05rem;
}

.col-date {
    min-width: 180px;
    font-size: 0.875rem;
    color: var(--text-muted);
}

.col-actions {
    width: 150px;
    text-align: right;
}

.action-buttons-group {
    display: inline-flex;
    gap: 8px;
    justify-content: flex-end;
}

/* Rank Badges */
.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 10px;
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1rem;
    border: 1px solid transparent;
}

.rank-1 {
    background-color: var(--rank-gold-bg);
    color: var(--rank-gold);
    border-color: var(--rank-gold-border);
    box-shadow: 0 2px 4px rgba(245, 158, 11, 0.15);
}

.rank-1::before {
    content: "🥇";
    margin-right: -2px;
}

.rank-2 {
    background-color: var(--rank-silver-bg);
    color: var(--rank-silver);
    border-color: var(--rank-silver-border);
}

.rank-2::before {
    content: "🥈";
    margin-right: -2px;
}

.rank-3 {
    background-color: var(--rank-bronze-bg);
    color: var(--rank-bronze);
    border-color: var(--rank-bronze-border);
}

.rank-3::before {
    content: "🥉";
    margin-right: -2px;
}

.rank-general {
    background-color: #f1f5f9;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 700;
}

.rank-none {
    color: var(--text-light);
    font-weight: 600;
}

/* Player Name Link (History Trigger) */
.player-name-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-weight: 700;
    color: var(--text-main);
    cursor: pointer;
    border-bottom: 2px dashed #cbd5e1;
    padding-bottom: 1px;
    transition: all var(--transition-fast);
}

.player-name-link:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.player-name-link::after {
    content: "📜";
    font-size: 0.8125rem;
    opacity: 0.6;
    transition: opacity var(--transition-fast);
}

.player-name-link:hover::after {
    opacity: 1;
}

/* Record Time Badge */
.time-badge {
    display: inline-block;
    padding: 4px 10px;
    background-color: #f8fafc;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-variant-numeric: tabular-nums;
}

.time-badge.top-record {
    background-color: var(--rank-gold-bg);
    border-color: var(--rank-gold-border);
    color: #b45309;
}

.time-none {
    color: var(--text-light);
    font-weight: 600;
}

/* ==========================================================================
   States (Loading, Empty, Error)
   ========================================================================== */
.state-row td {
    padding: 60px 20px;
    text-align: center;
}

.state-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid #e2e8f0;
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.state-text {
    font-size: 0.9375rem;
    color: var(--text-muted);
    font-weight: 500;
}

.empty-icon {
    font-size: 2.5rem;
}

/* ==========================================================================
   Modal Dialogs & Dim Overlay
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(15, 23, 42, 0.5);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.modal-overlay.is-active {
    opacity: 1;
    visibility: visible;
}

.modal-container {
    background: var(--bg-card);
    width: 100%;
    max-width: 440px;
    border-radius: 20px;
    box-shadow: var(--shadow-modal);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transform: translateY(16px) scale(0.96);
    transition: transform var(--transition-normal);
}

.modal-overlay.is-active .modal-container {
    transform: translateY(0) scale(1);
}

.modal-container.modal-lg {
    max-width: 540px;
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-icon-badge {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.badge-blue { background-color: var(--color-primary-light); color: var(--color-primary); }
.badge-green { background-color: var(--color-success-light); color: var(--color-success); }
.badge-red { background-color: var(--color-danger-light); color: var(--color-danger); }
.badge-purple { background-color: var(--color-purple-light); color: var(--color-purple); }

.modal-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--text-main);
}

.btn-close-modal {
    background: none;
    border: none;
    font-size: 1.25rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast);
}

.btn-close-modal:hover {
    background-color: #f1f5f9;
    color: var(--text-main);
}

.modal-body {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 18px;
}

/* Form Styles */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-main);
}

.form-label .required {
    color: var(--color-danger);
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.9375rem;
    background-color: #ffffff;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.delete-warning-box {
    background-color: var(--color-danger-light);
    border: 1px solid #fecaca;
    border-radius: 12px;
    padding: 14px 16px;
}

.warning-title {
    font-size: 0.9375rem;
    font-weight: 700;
    color: #991b1b;
}

.warning-desc {
    font-size: 0.8125rem;
    color: #b91c1c;
    margin-top: 4px;
}

.font-bold {
    font-weight: 800;
}

.modal-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 8px;
}

/* ==========================================================================
   History Modal List Styles
   ========================================================================== */
.history-modal-body {
    max-height: 480px;
    overflow-y: auto;
}

.history-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    background-color: #f8fafc;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.history-action-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--text-main);
}

.history-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
    white-space: nowrap;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.app-footer {
    text-align: center;
    margin-top: 32px;
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 640px) {
    .app-wrapper {
        padding: 16px 12px 32px;
    }

    .app-header {
        padding: 16px 18px;
    }

    .brand-title {
        font-size: 1.25rem;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .ranking-table th, .ranking-table td {
        padding: 12px 14px;
    }

    .modal-container {
        border-radius: 16px;
    }

    .modal-header, .modal-body {
        padding: 18px;
    }
}