@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=Playfair+Display:wght@700;900&display=swap');

/* ==================== CSS Variables ==================== */
:root {
    /* Japanese Sake Theme Colors */
    --primary-red: #d32f2f;
    --primary-red-dark: #b71c1c;
    --primary-red-light: #ef5350;
    
    --sake-cream: #faf8f3;
    --sake-white: #ffffff;
    --ink-dark: #1a1a2e;
    --ink-medium: #16213e;
    --ink-light: #0f3460;
    
    --text-primary: #2c2c2c;
    --text-secondary: #666666;
    --text-muted: #999999;
    
    --border-light: #f0f0f0;
    --border-medium: #e0e0e0;
    
    --success: #2e7d32;
    --success-bg: #e8f5e9;
    --warning: #f57c00;
    --warning-bg: #fff3e0;
    --danger: #c62828;
    --danger-bg: #ffebee;
    --info: #1976d2;
    --info-bg: #e3f2fd;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.12);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Sidebar */
    --sidebar-width: 260px;
}

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--sake-cream);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}

h1 { font-size: 2rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

a {
    color: var(--primary-red);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--primary-red-dark);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

/* ==================== Utility Classes ==================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.flex {
    display: flex;
}

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

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

/* ==================== Buttons ==================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--primary-red-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.25);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(211, 47, 47, 0.35);
}

.btn-secondary {
    background: var(--sake-white);
    color: var(--text-secondary);
    border: 2px solid var(--border-light);
}

.btn-secondary:hover {
    border-color: var(--border-medium);
    background: var(--sake-cream);
}

.btn-ghost {
    background: transparent;
    color: var(--text-secondary);
}

.btn-ghost:hover {
    background: rgba(0, 0, 0, 0.05);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: 0.8125rem;
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1rem;
}

.btn-icon {
    width: 40px;
    height: 40px;
    padding: 0;
    border-radius: var(--radius-md);
}

/* ==================== Cards ==================== */
.card {
    background: var(--sake-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ==================== Forms ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
    transition: all var(--transition-base);
    background: var(--sake-white);
    box-sizing: border-box;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-red);
    box-shadow: 0 0 0 3px rgba(211, 47, 47, 0.1);
}

.form-control::placeholder {
    color: var(--text-muted);
}

select.form-control {
    cursor: pointer;
}

textarea.form-control {
    min-height: 120px;
    resize: vertical;
}

/* ==================== Badges ==================== */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-success {
    background: var(--success-bg);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge-danger {
    background: var(--danger-bg);
    color: var(--danger);
}

.badge-info {
    background: var(--info-bg);
    color: var(--info);
}

/* ==================== Alerts ==================== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.alert-success {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid rgba(46, 125, 50, 0.3);
}

.alert-warning {
    background: var(--warning-bg);
    color: var(--warning);
    border: 1px solid rgba(245, 124, 0, 0.3);
}

.alert-danger {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid rgba(198, 40, 40, 0.3);
}

.alert-info {
    background: var(--info-bg);
    color: var(--info);
    border: 1px solid rgba(25, 118, 210, 0.3);
}

/* ==================== Tables ==================== */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table thead {
    background: var(--sake-cream);
}

.table th {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--border-medium);
}

.table td {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.9375rem;
    border-bottom: 1px solid var(--border-light);
}

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

.table tbody tr:hover {
    background: var(--sake-cream);
}

/* ==================== Modal ==================== */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-base);
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    background: var(--sake-white);
    border-radius: var(--radius-xl);
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-slow);
}

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

.modal-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.modal-body {
    padding: var(--spacing-xl);
}

.modal-footer {
    padding: var(--spacing-xl);
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ==================== Animations ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideDown {
    from {
        transform: translateY(-30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-30px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

/* ==================== Scrollbar ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--sake-cream);
}

::-webkit-scrollbar-thumb {
    background: var(--border-medium);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==================== Responsive ==================== */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 0px;
    }
    
    html {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
}