/* ============================================================
   勤怠管理システム - Design System & Styles
   Modern, mobile-first, dark mode supported
   ============================================================ */

/* --- CSS Variables (Design Tokens) --- */
:root {
    /* Primary Colors */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.3);
    
    /* Accent Colors */
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.15);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.15);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.15);
    --info: #3b82f6;
    
    /* Dark Theme (Default) */
    --bg-primary: #0f0f23;
    --bg-secondary: #1a1a2e;
    --bg-card: #16213e;
    --bg-card-hover: #1a2745;
    --bg-input: #1e293b;
    --bg-overlay: rgba(0, 0, 0, 0.6);
    
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-inverse: #0f172a;
    
    --border-color: #334155;
    --border-light: #1e293b;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--primary-glow);
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms ease;
    
    /* Typography */
    --font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Light theme override */
[data-theme="light"] {
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-card-hover: #f8fafc;
    --bg-input: #f1f5f9;
    --bg-overlay: rgba(0, 0, 0, 0.3);
    
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    
    --border-color: #e2e8f0;
    --border-light: #f1f5f9;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background animated gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(ellipse at 20% 50%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(6, 182, 212, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 80%, rgba(16, 185, 129, 0.04) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    color: var(--text-primary);
}
h1 { font-size: 1.75rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.1rem; }

a {
    color: var(--primary-light);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--primary); }

/* --- Layout --- */
.app-container {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 480px;
    margin: 0 auto;
    min-height: 100vh;
    padding-bottom: 80px;
}

.app-container.admin {
    max-width: 1200px;
}

/* --- Header --- */
.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--bg-secondary);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.app-header .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
    font-weight: 700;
}

.app-header .logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.header-btn {
    position: relative;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.3rem;
    cursor: pointer;
    padding: 8px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}
.header-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.badge {
    position: absolute;
    top: 2px;
    right: 2px;
    background: var(--danger);
    color: white;
    font-size: 0.65rem;
    font-weight: 700;
    min-width: 18px;
    height: 18px;
    line-height: 18px;
    text-align: center;
    border-radius: var(--radius-full);
    padding: 0 4px;
}

/* --- Navigation (Bottom Tab Bar) --- */
.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100%;
    max-width: 480px;
    background: var(--bg-secondary);
    backdrop-filter: blur(20px);
    border-top: 1px solid var(--border-color);
    display: flex;
    z-index: 100;
    padding: 4px 0;
    padding-bottom: max(4px, env(safe-area-inset-bottom));
}

.bottom-nav.admin {
    max-width: 1200px;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: 6px 4px;
    cursor: pointer;
    color: var(--text-muted);
    font-size: 0.65rem;
    font-weight: 500;
    transition: all var(--transition-fast);
    border: none;
    background: none;
    text-decoration: none;
}

.nav-item .nav-icon {
    font-size: 1.3rem;
    transition: transform var(--transition-normal);
}

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

.nav-item.active .nav-icon {
    transform: scale(1.15);
}

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

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    margin: 12px 16px;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

.card-title {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Punch Button (Main Feature) --- */
.punch-section {
    text-align: center;
    padding: 24px 16px;
}

.punch-clock {
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: 2px;
}

.punch-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.punch-btn-container {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
}

.punch-btn {
    width: 160px;
    height: 160px;
    border-radius: 50%;
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 700;
    color: white;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.punch-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 50%;
    padding: 3px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    mask-composite: exclude;
    -webkit-mask-composite: xor;
}

.punch-btn.clock-in {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    box-shadow: 0 0 40px var(--primary-glow), 0 0 80px rgba(99, 102, 241, 0.15);
}

.punch-btn.clock-out {
    background: linear-gradient(135deg, var(--warning), #f97316);
    box-shadow: 0 0 40px rgba(245, 158, 11, 0.3);
}

.punch-btn.on-break {
    background: linear-gradient(135deg, var(--success), #059669);
    box-shadow: 0 0 40px rgba(16, 185, 129, 0.3);
}

.punch-btn:hover {
    transform: scale(1.05);
}

.punch-btn:active {
    transform: scale(0.95);
}

.punch-btn .punch-icon {
    font-size: 2.5rem;
}

.punch-btn .punch-label {
    font-size: 0.9rem;
}

/* Sub punch buttons (break) */
.sub-punch-btns {
    display: flex;
    gap: 12px;
    margin-top: 12px;
}

.sub-punch-btn {
    padding: 12px 24px;
    border-radius: var(--radius-full);
    border: 2px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 6px;
}

.sub-punch-btn:hover {
    border-color: var(--primary);
    background: var(--bg-card-hover);
}

.sub-punch-btn.break-start {
    border-color: var(--success);
    color: var(--success);
}

.sub-punch-btn.break-end {
    border-color: var(--warning);
    color: var(--warning);
}

/* --- Status Badge --- */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.working {
    background: var(--success-light);
    color: var(--success);
}

.status-badge.off {
    background: var(--bg-input);
    color: var(--text-muted);
}

.status-badge.break {
    background: var(--warning-light);
    color: var(--warning);
}

.status-badge.pending {
    background: var(--warning-light);
    color: var(--warning);
}

.status-badge.approved {
    background: var(--success-light);
    color: var(--success);
}

.status-badge.rejected {
    background: var(--danger-light);
    color: var(--danger);
}

/* --- Summary Stats --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin: 12px 16px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 14px;
    text-align: center;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.stat-card.primary .stat-value { color: var(--primary-light); }
.stat-card.success .stat-value { color: var(--success); }
.stat-card.warning .stat-value { color: var(--warning); }
.stat-card.danger .stat-value { color: var(--danger); }

/* --- Table --- */
.table-container {
    overflow-x: auto;
    margin: 0 16px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

thead th {
    background: var(--bg-card);
    color: var(--text-secondary);
    font-weight: 600;
    text-align: left;
    padding: 10px 12px;
    border-bottom: 2px solid var(--border-color);
    white-space: nowrap;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

tbody td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-light);
    white-space: nowrap;
}

tbody tr:hover {
    background: var(--bg-card-hover);
}

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

/* --- Forms --- */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-textarea {
    min-height: 80px;
    resize: vertical;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-family);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
}

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

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
}
.btn-primary:hover:not(:disabled) {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}

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

.btn-warning {
    background: var(--warning);
    color: var(--text-inverse);
}

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}
.btn-outline:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary-light);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
}

.btn-block {
    width: 100%;
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(4px);
    z-index: 200;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
}

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

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 440px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title {
    font-size: 1rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.4rem;
    cursor: pointer;
    padding: 4px;
    line-height: 1;
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 12px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 8px;
    justify-content: flex-end;
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 360px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow-md);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
    font-size: 0.85rem;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--danger); }
.toast.info { border-left: 3px solid var(--info); }

@keyframes toastIn {
    from { opacity: 0; transform: translateX(100%); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
    from { opacity: 1; }
    to { opacity: 0; transform: translateY(-10px); }
}

/* --- Login Page --- */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: 28px;
}

.login-logo .logo-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-md);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin-bottom: 12px;
}

.login-logo h1 {
    font-size: 1.3rem;
}

.login-logo p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 4px;
}

/* --- Page Sections --- */
.page-section {
    display: none;
    padding-bottom: 20px;
}

.page-section.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.section-header {
    padding: 16px 16px 8px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 700;
}

/* --- Records List --- */
.record-item {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    gap: 12px;
}

.record-item:last-child {
    border-bottom: none;
}

.record-date-badge {
    width: 44px;
    height: 44px;
    background: var(--bg-input);
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.record-date-badge .day {
    font-size: 1rem;
    font-weight: 700;
    line-height: 1.1;
}

.record-date-badge .weekday {
    font-size: 0.6rem;
    color: var(--text-muted);
}

.record-detail {
    flex: 1;
    min-width: 0;
}

.record-times {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
}

.record-meta {
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.record-hours {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary-light);
    text-align: right;
    flex-shrink: 0;
}

/* --- Message List --- */
.message-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.message-item:hover {
    background: var(--bg-card-hover);
}

.message-item.unread {
    border-left: 3px solid var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.message-subject {
    font-weight: 600;
    font-size: 0.85rem;
    margin-bottom: 2px;
}

.message-preview {
    font-size: 0.75rem;
    color: var(--text-muted);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.message-time {
    font-size: 0.65rem;
    color: var(--text-muted);
    float: right;
}

/* --- Shift Calendar --- */
.shift-calendar {
    margin: 0 16px;
}

.calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 0;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 2px;
    text-align: center;
    font-size: 0.75rem;
}

.calendar-day-header {
    padding: 8px 4px;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.7rem;
}

.calendar-day {
    padding: 8px 4px;
    min-height: 40px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
    position: relative;
}

.calendar-day:hover {
    background: var(--bg-card-hover);
}

.calendar-day.today {
    border: 2px solid var(--primary);
}

.calendar-day.has-shift::after {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--primary);
    border-radius: 50%;
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
}

.calendar-day.has-record::before {
    content: '';
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    position: absolute;
    bottom: 4px;
    left: calc(50% - 5px);
    transform: translateX(-50%);
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state .empty-icon {
    font-size: 3rem;
    margin-bottom: 12px;
    opacity: 0.5;
}

.empty-state p {
    font-size: 0.85rem;
}

/* --- Loading Spinner --- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--border-color);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 250;
}

.loading-overlay.active {
    display: flex;
}

.loading-content {
    text-align: center;
    color: var(--text-primary);
}

.loading-content .spinner {
    width: 40px;
    height: 40px;
    border-width: 3px;
    margin-bottom: 12px;
}

/* --- Responsive --- */
@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .punch-clock {
        font-size: 2.5rem;
    }
    
    .punch-btn {
        width: 140px;
        height: 140px;
    }
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* --- Print Styles --- */
@media print {
    body { background: white; color: black; }
    .app-header, .bottom-nav, .punch-section, .btn { display: none; }
    .card { border: 1px solid #ddd; box-shadow: none; }
    table { font-size: 10pt; }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.p-16 { padding: 16px; }
.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-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.hidden { display: none !important; }