/* ==========================================================================
   SKT Sales Report Design System
   Dual Theme: Amber Daylight (Light) / Indigo Night (Dark)
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables / Design Tokens
   Theme-independent variables (shared between light/dark)
   -------------------------------------------------------------------------- */
:root {
    /* Typography */
    --font-display: 'Zen Kaku Gothic New', 'BIZ UDGothic', sans-serif;
    --font-body: 'BIZ UDGothic', 'Zen Kaku Gothic New', sans-serif;
    --font-mono: 'Space Grotesk', 'JetBrains Mono', monospace;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;

    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* --------------------------------------------------------------------------
   Light Theme: Amber Daylight (Default)
   Warm cream background with amber accents
   -------------------------------------------------------------------------- */
:root,
[data-theme="light"] {
    /* Color Palette - Primary (slightly darker for contrast on light bg) */
    --color-primary: #d97706;
    --color-primary-light: #f59e0b;
    --color-primary-dark: #b45309;
    --color-primary-glow: rgba(217, 119, 6, 0.15);

    /* Color Palette - Secondary */
    --color-secondary: #0891b2;
    --color-secondary-light: #06b6d4;
    --color-secondary-dark: #0e7490;

    /* Color Palette - Accent */
    --color-accent-violet: #7c3aed;
    --color-accent-rose: #e11d48;
    --color-accent-emerald: #059669;

    /* Background Colors - Warm Off-White */
    --bg-base: #faf8f5;
    --bg-surface: #ffffff;
    --bg-elevated: #f5f3ef;
    --bg-subtle: #ebe9e5;

    /* Text Colors - Warm Black */
    --text-primary: #1c1917;
    --text-secondary: #57534e;
    --text-muted: #78716c;
    --text-disabled: #a8a29e;

    /* Border & Dividers */
    --border-default: #e7e5e4;
    --border-subtle: #f5f5f4;
    --border-focus: var(--color-primary);

    /* Gradients */
    --gradient-surface: linear-gradient(135deg, #ffffff 0%, #faf8f5 100%);
    --gradient-glow: linear-gradient(135deg, rgba(217, 119, 6, 0.05) 0%, rgba(8, 145, 178, 0.05) 100%);
    --gradient-radial: radial-gradient(ellipse at top, #ffffff 0%, #faf8f5 100%);
    --gradient-ambient: radial-gradient(circle at 20% 20%, rgba(217, 119, 6, 0.03) 0%, transparent 50%),
                        radial-gradient(circle at 80% 80%, rgba(8, 145, 178, 0.03) 0%, transparent 50%);

    /* Shadows - Softer for light theme */
    --shadow-sm: 0 1px 2px rgba(28, 25, 23, 0.05), 0 1px 3px rgba(28, 25, 23, 0.08);
    --shadow-md: 0 4px 6px rgba(28, 25, 23, 0.05), 0 2px 4px rgba(28, 25, 23, 0.06);
    --shadow-lg: 0 10px 15px rgba(28, 25, 23, 0.06), 0 4px 6px rgba(28, 25, 23, 0.04);
    --shadow-xl: 0 20px 25px rgba(28, 25, 23, 0.08), 0 10px 10px rgba(28, 25, 23, 0.04);
    --shadow-glow: 0 0 20px rgba(217, 119, 6, 0.15), 0 0 40px rgba(217, 119, 6, 0.08);
    --shadow-glow-cyan: 0 0 20px rgba(8, 145, 178, 0.15), 0 0 40px rgba(8, 145, 178, 0.08);
}

/* --------------------------------------------------------------------------
   Dark Theme: Indigo Night
   Deep indigo/slate background with warm amber accents
   -------------------------------------------------------------------------- */
[data-theme="dark"] {
    /* Color Palette - Primary */
    --color-primary: #f59e0b;
    --color-primary-light: #fbbf24;
    --color-primary-dark: #d97706;
    --color-primary-glow: rgba(245, 158, 11, 0.3);

    /* Color Palette - Secondary */
    --color-secondary: #06b6d4;
    --color-secondary-light: #22d3ee;
    --color-secondary-dark: #0891b2;

    /* Color Palette - Accent */
    --color-accent-violet: #8b5cf6;
    --color-accent-rose: #f43f5e;
    --color-accent-emerald: #10b981;

    /* Background Colors - Deep Indigo/Slate */
    --bg-base: #0f172a;
    --bg-surface: #1e293b;
    --bg-elevated: #334155;
    --bg-subtle: #475569;

    /* Text Colors - Light */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-disabled: #475569;

    /* Border & Dividers */
    --border-default: #334155;
    --border-subtle: #1e293b;
    --border-focus: var(--color-primary);

    /* Gradients */
    --gradient-surface: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --gradient-glow: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, rgba(6, 182, 212, 0.1) 100%);
    --gradient-radial: radial-gradient(ellipse at top, #1e293b 0%, #0f172a 100%);
    --gradient-ambient: radial-gradient(circle at 20% 20%, rgba(245, 158, 11, 0.05) 0%, transparent 50%),
                        radial-gradient(circle at 80% 80%, rgba(6, 182, 212, 0.05) 0%, transparent 50%);

    /* Shadows - Darker for dark theme */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.35), 0 2px 4px rgba(0, 0, 0, 0.25);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.3), 0 4px 8px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.3), 0 8px 16px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px rgba(245, 158, 11, 0.2), 0 0 40px rgba(245, 158, 11, 0.1);
    --shadow-glow-cyan: 0 0 20px rgba(6, 182, 212, 0.2), 0 0 40px rgba(6, 182, 212, 0.1);
}

/* --------------------------------------------------------------------------
   Base Styles
   -------------------------------------------------------------------------- */
html, body {
    font-family: var(--font-body);
    background: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    letter-spacing: 0.01em;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    scroll-behavior: smooth;
}

body {
    background-image: var(--gradient-ambient);
    background-attachment: fixed;
    min-height: 100vh;
}

/* --------------------------------------------------------------------------
   Typography Enhancements
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    color: var(--text-primary);
}

h1:focus, h2:focus, h3:focus {
    outline: none;
}

/* Data Display - Numbers */
.data-number, .kpi-value, .sales-amount {
    font-family: var(--font-mono);
    font-weight: 600;
    font-feature-settings: "tnum" 1, "ss01" 1;
    letter-spacing: -0.02em;
}

.data-number-large {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

/* Japanese Text Optimization */
.text-jp {
    font-family: var(--font-body);
    line-height: 1.8;
    word-break: keep-all;
    overflow-wrap: break-word;
}

/* --------------------------------------------------------------------------
   Links & Interactive Elements
   -------------------------------------------------------------------------- */
a, .btn-link {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover, .btn-link:hover {
    color: var(--color-primary-light);
}

/* --------------------------------------------------------------------------
   Custom Buttons
   -------------------------------------------------------------------------- */
.btn-glow {
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.btn-glow::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 0%, rgba(255, 255, 255, 0.1) 50%, transparent 100%);
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
}

.btn-glow:hover::before {
    transform: translateX(100%);
}

.btn-glow:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

/* --------------------------------------------------------------------------
   Form Elements
   -------------------------------------------------------------------------- */
.btn:focus,
.btn:active:focus,
.btn-link.nav-link:focus,
.form-control:focus,
.form-check-input:focus {
    box-shadow: 0 0 0 2px var(--bg-base), 0 0 0 4px var(--color-primary);
    outline: none;
}

.valid.modified:not([type=checkbox]) {
    outline: 2px solid var(--color-accent-emerald);
    outline-offset: 1px;
}

.invalid {
    outline: 2px solid var(--color-accent-rose);
    outline-offset: 1px;
}

.validation-message {
    color: var(--color-accent-rose);
    font-size: 0.875rem;
    margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Cards & Surfaces
   -------------------------------------------------------------------------- */
.surface-card {
    background: var(--gradient-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
}

.surface-elevated {
    background: var(--bg-elevated);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
}

.surface-glow {
    position: relative;
}

.surface-glow::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    border-radius: inherit;
    z-index: -1;
    opacity: 0;
    transition: opacity var(--transition-base);
}

.surface-glow:hover::before {
    opacity: 0.3;
}

/* --------------------------------------------------------------------------
   KPI Cards
   -------------------------------------------------------------------------- */
.kpi-card {
    background: var(--gradient-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
}

.kpi-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.kpi-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--color-primary);
}

.kpi-card:hover::before {
    opacity: 1;
}

.kpi-card .kpi-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 158, 11, 0.1);
    border-radius: var(--radius-md);
    color: var(--color-primary);
    margin-bottom: var(--space-md);
}

.kpi-card .kpi-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.kpi-card .kpi-value {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.2;
}

.kpi-card .kpi-suffix {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-left: var(--space-xs);
}

.kpi-card .kpi-trend {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
    font-size: 0.875rem;
}

.kpi-card .kpi-trend.positive {
    color: var(--color-accent-emerald);
}

.kpi-card .kpi-trend.negative {
    color: var(--color-accent-rose);
}

/* --------------------------------------------------------------------------
   Data Tables
   -------------------------------------------------------------------------- */
.data-table {
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 1px solid var(--border-default);
}

.data-table th {
    background: var(--bg-elevated);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    padding: var(--space-md);
}

.data-table td {
    padding: var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
}

.data-table tr:hover td {
    background: rgba(245, 158, 11, 0.05);
}

.data-table .amount-cell {
    font-family: var(--font-mono);
    text-align: right;
    font-weight: 500;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav-item {
    position: relative;
    transition: all var(--transition-fast);
}

.nav-item::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-base);
}

.nav-item:hover::after,
.nav-item.active::after {
    width: 100%;
}

.nav-item.active {
    color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Micro-interactions & Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-16px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

@keyframes shimmer {
    0% {
        background-position: -200% 0;
    }
    100% {
        background-position: 200% 0;
    }
}

@keyframes glow {
    0%, 100% {
        box-shadow: 0 0 5px var(--color-primary-glow);
    }
    50% {
        box-shadow: 0 0 20px var(--color-primary-glow), 0 0 30px var(--color-primary-glow);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-4px);
    }
}

.animate-fade-in {
    animation: fadeIn var(--transition-base) ease-out forwards;
}

.animate-slide-in {
    animation: slideIn var(--transition-base) ease-out forwards;
}

.animate-scale-in {
    animation: scaleIn var(--transition-base) ease-out forwards;
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

.animate-shimmer {
    background: linear-gradient(90deg, var(--bg-surface) 0%, var(--bg-elevated) 50%, var(--bg-surface) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}

.animate-glow {
    animation: glow 2s ease-in-out infinite;
}

.animate-float {
    animation: float 3s ease-in-out infinite;
}

/* Staggered animations for lists */
.stagger-children > *:nth-child(1) { animation-delay: 0ms; }
.stagger-children > *:nth-child(2) { animation-delay: 50ms; }
.stagger-children > *:nth-child(3) { animation-delay: 100ms; }
.stagger-children > *:nth-child(4) { animation-delay: 150ms; }
.stagger-children > *:nth-child(5) { animation-delay: 200ms; }
.stagger-children > *:nth-child(6) { animation-delay: 250ms; }

/* --------------------------------------------------------------------------
   Loading States
   -------------------------------------------------------------------------- */
.skeleton {
    background: linear-gradient(90deg, var(--bg-surface) 0%, var(--bg-elevated) 50%, var(--bg-surface) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--radius-sm);
}

.skeleton-text {
    height: 1em;
    border-radius: var(--radius-sm);
}

.skeleton-heading {
    height: 1.5em;
    width: 60%;
    border-radius: var(--radius-sm);
}

.skeleton-card {
    height: 120px;
    border-radius: var(--radius-md);
}

/* --------------------------------------------------------------------------
   Blazor Loading Screen
   -------------------------------------------------------------------------- */
#app {
    background: var(--bg-base);
}

.loading-progress {
    position: relative;
    display: block;
    width: 8rem;
    height: 8rem;
    margin: 0 auto;
}

.loading-progress circle {
    fill: none;
    stroke-width: 0.4rem;
    transform-origin: 50% 50%;
    transform: rotate(-90deg);
}

.loading-progress circle:first-child {
    stroke: var(--bg-elevated);
}

.loading-progress circle:last-child {
    stroke: var(--color-primary);
    stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
    transition: stroke-dasharray 0.1s ease-in-out;
    filter: drop-shadow(0 0 8px var(--color-primary-glow));
}

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--text-primary);
    inset: calc(20vh + 3.25rem) 0 auto 0;
}

.loading-progress-text:after {
    content: var(--blazor-load-percentage-text, "Loading...");
}

/* NOTE: Loading container styles are defined inline in index.html */

/* --------------------------------------------------------------------------
   Error UI
   -------------------------------------------------------------------------- */
#blazor-error-ui {
    background: linear-gradient(135deg, var(--bg-surface) 0%, var(--bg-base) 100%);
    border-top: 3px solid var(--color-accent-rose);
    bottom: 0;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    display: none;
    left: 0;
    padding: var(--space-md) var(--space-lg);
    position: fixed;
    width: 100%;
    z-index: 1000;
    color: var(--text-primary);
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: var(--space-lg);
    top: var(--space-md);
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

#blazor-error-ui .dismiss:hover {
    color: var(--text-primary);
}

#blazor-error-ui .reload {
    color: var(--color-primary);
    font-weight: 600;
}

.blazor-error-boundary {
    background: linear-gradient(135deg, rgba(244, 63, 94, 0.1) 0%, var(--bg-surface) 100%);
    border: 1px solid var(--color-accent-rose);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    color: var(--text-primary);
}

.blazor-error-boundary::after {
    content: "エラーが発生しました。ページを再読み込みしてください。";
}

/* --------------------------------------------------------------------------
   Code & Monospace
   -------------------------------------------------------------------------- */
code, pre {
    font-family: var(--font-mono);
    background: var(--bg-surface);
    border-radius: var(--radius-sm);
}

code {
    color: var(--color-primary);
    padding: 0.1em 0.4em;
}

/* --------------------------------------------------------------------------
   MudBlazor Overrides
   -------------------------------------------------------------------------- */

/* AppBar enhancement */
.mud-appbar {
    background: var(--bg-surface) !important;
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-default);
}

/* Drawer styling */
.mud-drawer {
    background: var(--gradient-surface) !important;
    border-right: 1px solid var(--border-default);
}

.mud-nav-link {
    border-radius: var(--radius-md);
    margin: 2px var(--space-sm);
    transition: all var(--transition-fast);
}

.mud-nav-link:hover {
    background: rgba(245, 158, 11, 0.1) !important;
}

.mud-nav-link.active {
    background: rgba(245, 158, 11, 0.15) !important;
    border-left: 3px solid var(--color-primary);
}

/* Paper with glow on hover */
.mud-paper {
    transition: all var(--transition-base);
}

.mud-paper:hover {
    border-color: rgba(245, 158, 11, 0.3);
}

/* Button enhancements */
.mud-button-root {
    transition: all var(--transition-fast);
}

.mud-button-filled.mud-button-primary:hover {
    box-shadow: var(--shadow-glow);
}

/* Input field styling */
.mud-input-outlined .mud-input-outlined-border {
    transition: border-color var(--transition-fast);
}

.mud-input:focus-within .mud-input-outlined-border {
    border-color: var(--color-primary) !important;
    box-shadow: 0 0 0 1px var(--color-primary);
}

/* DataGrid styling */
.mud-table-root {
    border-radius: var(--radius-md);
    overflow: hidden;
}

.mud-table-head .mud-table-cell {
    background: var(--bg-elevated) !important;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
}

.mud-table-row:hover {
    background: rgba(245, 158, 11, 0.05) !important;
}

/* Card improvements */
.mud-card {
    border: 1px solid var(--border-default);
    transition: all var(--transition-base);
}

.mud-card:hover {
    border-color: rgba(245, 158, 11, 0.3);
    box-shadow: var(--shadow-lg);
}

/* Alert styling */
.mud-alert-filled.mud-alert-error {
    background: linear-gradient(135deg, rgba(244, 63, 94, 0.9) 0%, rgba(225, 29, 72, 0.9) 100%) !important;
}

.mud-alert-filled.mud-alert-success {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.9) 0%, rgba(5, 150, 105, 0.9) 100%) !important;
}

/* Menu styling */
.mud-menu .mud-popover-paper {
    background: var(--bg-surface) !important;
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-xl);
}

.mud-list-item:hover {
    background: rgba(245, 158, 11, 0.1) !important;
}

/* Progress circular styling */
.mud-progress-circular svg circle {
    stroke: var(--color-primary);
}

/* Skeleton styling */
.mud-skeleton {
    background: var(--bg-elevated) !important;
}

.mud-skeleton::after {
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.05), transparent) !important;
}

/* Dialog styling */
.mud-dialog {
    background: var(--gradient-surface) !important;
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-xl);
}

/* Tooltip styling */
.mud-tooltip {
    background: var(--bg-elevated) !important;
    border: 1px solid var(--border-default);
    box-shadow: var(--shadow-md);
    color: var(--text-primary) !important;
}

/* --------------------------------------------------------------------------
   Login Page Specific
   -------------------------------------------------------------------------- */
.login-background {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-base);
    position: relative;
    overflow: hidden;
}

.login-background::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background:
        radial-gradient(circle at 30% 30%, rgba(245, 158, 11, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 70% 70%, rgba(6, 182, 212, 0.08) 0%, transparent 40%),
        radial-gradient(circle at 50% 50%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
    animation: float 20s ease-in-out infinite;
}

.login-card {
    background: var(--gradient-surface);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    max-width: 420px;
    width: 100%;
    position: relative;
    box-shadow: var(--shadow-xl);
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    border-radius: var(--radius-full);
}

.login-logo {
    text-align: center;
    margin-bottom: var(--space-xl);
}

.login-logo-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-md);
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
}

.login-logo-icon svg {
    width: 32px;
    height: 32px;
    fill: var(--bg-base);
}

.login-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

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

/* --------------------------------------------------------------------------
   Responsive Design
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    :root {
        --space-lg: 1rem;
        --space-xl: 1.5rem;
        --space-2xl: 2rem;
    }

    .kpi-card .kpi-value {
        font-size: 1.5rem;
    }

    .data-number-large {
        font-size: 2rem;
    }

    .login-card {
        margin: var(--space-md);
        padding: var(--space-xl);
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: var(--space-lg);
    }

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

/* --------------------------------------------------------------------------
   Utility Classes
   -------------------------------------------------------------------------- */
.text-primary-color { color: var(--color-primary); }
.text-secondary-color { color: var(--color-secondary); }
.text-muted { color: var(--text-muted); }

.bg-surface { background: var(--bg-surface); }
.bg-elevated { background: var(--bg-elevated); }

.border-default { border: 1px solid var(--border-default); }
.border-glow { border-color: var(--color-primary); }

.rounded-sm { border-radius: var(--radius-sm); }
.rounded-md { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }

.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-glow { box-shadow: var(--shadow-glow); }

.transition-fast { transition: all var(--transition-fast); }
.transition-base { transition: all var(--transition-base); }
.transition-slow { transition: all var(--transition-slow); }

/* --------------------------------------------------------------------------
   Chart X-axis Label Rotation
   グラフのX軸ラベルを45度回転させて可読性を向上
   -------------------------------------------------------------------------- */
.chart-panel .mud-charts-xaxis text {
    transform-box: fill-box;
    transform-origin: center;
    transform: rotate(-45deg) translateY(-8px);
}

.chart-panel .mud-chart-line,
.chart-panel .mud-chart-bar {
    overflow: visible;
}

/* 凡例と横軸ラベルの重なり防止 */
.chart-panel .mud-chart-legend {
    margin-top: 3rem !important;
    padding-top: 0.5rem;
}