/* ============================================================
   Job Hunting Vitals - Static Cloudflare Pages Edition
   Design System & Styles
   ============================================================ */

/* --- CSS Variables (Design Tokens) --- */
:root {
    /* Primary Colors */
    --color-primary: #6366f1;
    --color-primary-light: #818cf8;
    --color-primary-dark: #4f46e5;
    --color-primary-50: #eef2ff;
    --color-primary-100: #e0e7ff;

    /* Accent Colors */
    --color-accent: #06b6d4;
    --color-accent-light: #22d3ee;

    /* Status Colors */
    --color-success: #10b981;
    --color-success-light: #d1fae5;
    --color-warning: #f59e0b;
    --color-warning-light: #fef3c7;
    --color-danger: #ef4444;
    --color-danger-light: #fee2e2;
    --color-info: #3b82f6;
    --color-info-light: #dbeafe;

    /* Neutrals */
    --color-bg: #f8fafc;
    --color-bg-card: #ffffff;
    --color-bg-sidebar: #1e1b4b;
    --color-bg-sidebar-hover: #312e81;
    --color-text: #1e293b;
    --color-text-secondary: #64748b;
    --color-text-light: #94a3b8;
    --color-text-sidebar: #c7d2fe;
    --color-text-sidebar-active: #ffffff;
    --color-border: #e2e8f0;
    --color-border-light: #f1f5f9;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --gradient-accent: linear-gradient(135deg, #06b6d4 0%, #3b82f6 100%);
    --gradient-warm: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
    --gradient-green: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);

    /* Typography */
    --font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 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-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    min-height: 100vh;
}

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

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

img {
    max-width: 100%;
    height: auto;
}

/* --- App Layout (SPA) --- */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* --- View Sections (SPA Tab Switch) --- */
.view-section {
    display: none;
}

.view-section.active {
    display: block;
    animation: fadeIn 0.25s ease;
}

/* --- Sidebar --- */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-sidebar);
    color: var(--color-text-sidebar);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-base);
    overflow-y: auto;
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-logo {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: #ffffff;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.sidebar-logo-icon {
    font-size: var(--font-size-2xl);
}

.sidebar-version {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.4);
    margin-top: var(--space-1);
    margin-left: 38px;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4) 0;
}

.nav-section-title {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: rgba(255, 255, 255, 0.35);
    padding: var(--space-4) var(--space-6) var(--space-2);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-6);
    color: var(--color-text-sidebar);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    cursor: pointer;
    text-decoration: none;
    user-select: none;
}

.nav-item:hover {
    background: var(--color-bg-sidebar-hover);
    color: #ffffff;
}

.nav-item.active {
    background: var(--color-bg-sidebar-hover);
    color: var(--color-text-sidebar-active);
    border-left-color: var(--color-primary-light);
}

.nav-item-icon {
    font-size: var(--font-size-lg);
    width: 24px;
    text-align: center;
}

.sidebar-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-status-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-text-sidebar);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.05);
}

.sidebar-status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--color-success);
}

/* --- Main Content --- */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-8);
    min-height: 100vh;
}

/* --- Page Header --- */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-8);
}

.page-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.025em;
}

.page-subtitle {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}

.page-actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* --- Cards --- */
.card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border-light);
    transition: box-shadow var(--transition-fast);
    margin-bottom: var(--space-6);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.card-header-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* --- KPI Cards --- */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.kpi-card {
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    color: #ffffff;
    position: relative;
    overflow: hidden;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    text-decoration: none;
    cursor: pointer;
}

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

.kpi-card::after {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
}

.kpi-card.kpi-saved { background: var(--gradient-primary); }
.kpi-card.kpi-applied { background: var(--gradient-accent); }
.kpi-card.kpi-interview { background: var(--gradient-warm); }
.kpi-card.kpi-offer { background: var(--gradient-green); }

.kpi-label {
    font-size: var(--font-size-xs);
    font-weight: 500;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.kpi-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    line-height: 1;
    margin-bottom: var(--space-1);
}

.kpi-unit {
    font-size: var(--font-size-lg);
    font-weight: 400;
    opacity: 0.8;
}

.kpi-sub {
    font-size: var(--font-size-xs);
    opacity: 0.8;
    margin-top: var(--space-1);
}

/* --- Rate Cards --- */
.rate-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.rate-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    border: 1px solid var(--color-border-light);
    text-align: center;
    transition: box-shadow var(--transition-fast);
}

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

.rate-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    font-weight: 500;
    margin-bottom: var(--space-2);
}

.rate-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-primary);
}

.rate-formula {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    margin-top: var(--space-1);
}

/* Progress bar inside rate cards */
.rate-progress-bar {
    height: 6px;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    margin-top: var(--space-3);
    overflow: hidden;
}

.rate-progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width 0.5s ease;
}

/* --- Dashboard Grid --- */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-6);
}

.dashboard-grid-full {
    grid-template-columns: 1fr;
}

/* --- AI Diagnosis Card --- */
.ai-diagnosis {
    background: linear-gradient(135deg, #eef2ff 0%, #e0e7ff 100%);
    border: 1px solid var(--color-primary-100);
}

.ai-diagnosis-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-3);
}

.ai-diagnosis-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-primary-dark);
    margin-bottom: var(--space-3);
}

.ai-priority-list {
    list-style: none;
    padding: 0;
}

.ai-priority-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) 0;
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
}

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

.ai-priority-rank {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-full);
    background: var(--color-primary);
    color: #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xs);
    font-weight: 700;
    flex-shrink: 0;
}

.ai-priority-text {
    font-size: var(--font-size-sm);
    color: var(--color-text);
    font-weight: 500;
}

/* --- Interview Schedule Card --- */
.interview-upcoming {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.interview-item {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
    transition: background var(--transition-fast);
}

.interview-item:hover {
    background: var(--color-border-light);
}

.interview-date-badge {
    background: var(--gradient-warm);
    color: #ffffff;
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    text-align: center;
    min-width: 60px;
    flex-shrink: 0;
}

.interview-date-day {
    font-size: var(--font-size-xl);
    font-weight: 700;
    line-height: 1;
}

.interview-date-month {
    font-size: var(--font-size-xs);
    opacity: 0.9;
}

.interview-info {
    flex: 1;
}

.interview-company {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.interview-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: var(--space-1);
}

.interview-countdown {
    font-size: var(--font-size-xs);
    font-weight: 600;
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    background: var(--color-warning-light);
    color: #92400e;
    white-space: nowrap;
}

.interview-countdown.urgent {
    background: var(--color-danger-light);
    color: #991b1b;
    animation: pulse 2s infinite;
}

/* --- Recent List --- */
.recent-list {
    display: flex;
    flex-direction: column;
}

.recent-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border-light);
}

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

.recent-item-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text);
}

.recent-item-date {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
}

/* --- Activity Alert --- */
.activity-alert {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-warning-light);
    border-radius: var(--radius-md);
    border: 1px solid #fcd34d;
    margin-bottom: var(--space-4);
}

.activity-alert-icon {
    font-size: var(--font-size-xl);
    flex-shrink: 0;
}

.activity-alert-text {
    font-size: var(--font-size-sm);
    color: #92400e;
    font-weight: 500;
}

/* --- Tables --- */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table thead {
    background: var(--color-bg);
}

.data-table th {
    padding: 8px 11px;
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: var(--font-size-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
}

.data-table td {
    padding: 8px 11px;
    border-bottom: 1px solid var(--color-border-light);
    color: var(--color-text);
    vertical-align: middle;
}

.table-date {
    white-space: nowrap;
}

.table-actions {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    white-space: nowrap;
}

.btn-delete-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    background: transparent;
    border: 1px solid transparent;
    color: var(--color-text-light);
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-fast);
    line-height: 1;
    padding: 0;
    text-decoration: none;
}

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

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

.data-table tbody tr:hover {
    background: var(--color-border-light);
}

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

/* Column Widths */
.col-date { width: 12%; }
.col-company { width: 20%; }
.col-format { width: 10%; }
.col-status { width: 10%; }
.col-questions { width: 22%; }
.col-struggled { width: 20%; }
.col-actions { width: 6%; text-align: center; }

.data-table td.col-questions,
.data-table td.col-struggled {
    padding-top: var(--space-2);
    padding-bottom: var(--space-2);
}

/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    white-space: nowrap;
    margin: 2px 4px 2px 0;
}

.badge-primary { background: var(--color-primary-50); color: var(--color-primary-dark); }
.badge-success { background: var(--color-success-light); color: #065f46; }
.badge-warning { background: var(--color-warning-light); color: #92400e; }
.badge-danger { background: var(--color-danger-light); color: #991b1b; }
.badge-info { background: var(--color-info-light); color: #1e40af; }
.badge-neutral { background: var(--color-border-light); color: var(--color-text-secondary); }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 1px solid transparent;
    text-decoration: none;
    font-family: var(--font-family);
    line-height: 1.4;
    user-select: none;
}

.btn-sm {
    padding: 4px 8px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--space-3) var(--space-6);
    font-size: var(--font-size-base);
}

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

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

.btn-secondary {
    background: var(--color-bg);
    color: var(--color-text);
    border-color: var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-border-light);
    border-color: var(--color-text-light);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn-outline:hover {
    background: var(--color-primary-50);
}

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

.btn-danger:hover {
    background: #dc2626;
}

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

.btn-success:hover {
    background: #059669;
}

.btn-icon {
    padding: var(--space-2);
    border-radius: var(--radius-md);
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    cursor: pointer;
}

.btn-icon:hover {
    background: var(--color-border-light);
    color: var(--color-text);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* --- Star Rating --- */
.star-rating {
    display: inline-flex;
    gap: 2px;
}

.star {
    color: var(--color-border);
    font-size: var(--font-size-sm);
}

.star.filled {
    color: var(--color-warning);
}

/* --- Forms & Inputs --- */
.form-group {
    margin-bottom: var(--space-4);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.form-label .required {
    color: var(--color-danger);
    margin-left: 2px;
}

.form-control {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text);
    background-color: var(--color-bg-card);
    transition: border-color var(--transition-fast);
    outline: none;
}

.form-control:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-text {
    font-size: var(--font-size-xs);
    color: var(--color-text-light);
    margin-top: var(--space-1);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

/* --- Checkbox Group --- */
.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.checkbox-item:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-50);
}

.checkbox-item input[type="checkbox"] {
    accent-color: var(--color-primary);
}

/* --- Tabs --- */
.tabs {
    display: flex;
    gap: var(--space-1);
    border-bottom: 2px solid var(--color-border);
    margin-bottom: var(--space-6);
}

.tab {
    padding: var(--space-3) var(--space-5);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    border: none;
    background: none;
    cursor: pointer;
    position: relative;
    transition: color var(--transition-fast);
    font-family: var(--font-family);
}

.tab:hover {
    color: var(--color-text);
}

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

.tab.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px 2px 0 0;
}

/* --- Filter Bar --- */
.filter-bar {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-4);
    flex-wrap: wrap;
}

.filter-select {
    padding: var(--space-2) var(--space-4);
    padding-right: 36px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-family: var(--font-family);
    color: var(--color-text);
    background: var(--color-bg-card);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8.5L1 3.5h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    outline: none;
    transition: border-color var(--transition-fast);
}

.filter-select:focus {
    border-color: var(--color-primary);
}

/* --- Modal --- */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

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

.modal {
    background: var(--color-bg-card);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: translateY(20px) scale(0.95);
    transition: transform var(--transition-base);
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border-light);
}

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

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    border: none;
    background: transparent;
    color: var(--color-text-light);
    font-size: var(--font-size-xl);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-border-light);
    color: var(--color-text);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border-light);
}

/* --- Toast Notifications --- */
.toast-container {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    min-width: 300px;
    max-width: 450px;
    animation: slideInRight 0.3s ease;
    font-size: var(--font-size-sm);
}

.toast-success { border-left: 4px solid var(--color-success); }
.toast-error { border-left: 4px solid var(--color-danger); }
.toast-warning { border-left: 4px solid var(--color-warning); }
.toast-info { border-left: 4px solid var(--color-info); }

.toast-icon {
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.toast-message {
    flex: 1;
    color: var(--color-text);
}

.toast-close {
    background: none;
    border: none;
    color: var(--color-text-light);
    cursor: pointer;
    font-size: var(--font-size-lg);
    padding: 0;
    flex-shrink: 0;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-4);
    color: var(--color-text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: var(--space-4);
    opacity: 0.5;
}

.empty-state-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-2);
    color: var(--color-text);
}

.empty-state-text {
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-6);
}

/* --- Loading Spinner --- */
.spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

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

/* --- Mobile Sidebar Toggle --- */
.sidebar-toggle {
    display: none;
    position: fixed;
    top: var(--space-4);
    left: var(--space-4);
    z-index: 101;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-xl);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
    .kpi-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .rate-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    .analysis-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .sidebar-toggle {
        display: flex;
    }
    .main-content {
        margin-left: 0;
        padding: var(--space-4);
        padding-top: calc(var(--space-4) + 48px);
    }
    .kpi-grid {
        grid-template-columns: 1fr 1fr;
    }
    .rate-grid {
        grid-template-columns: 1fr;
    }
    .page-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .analysis-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .kpi-grid {
        grid-template-columns: 1fr;
    }
    .modal {
        width: 95%;
    }
}

/* --- Utility Classes --- */
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-sm { font-size: var(--font-size-sm); }
.text-xs { font-size: var(--font-size-xs); }
.text-muted { color: var(--color-text-secondary); }
.text-light { color: var(--color-text-light); }
.text-primary { color: var(--color-primary); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-warning { color: var(--color-warning); }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.hidden { display: none !important; }
.flex { display: flex; }
.flex-between { display: flex; justify-content: space-between; align-items: center; }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* --- AI Analysis Styling & Grids --- */
.analysis-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.analysis-card {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    border: 1px solid var(--color-border-light);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all var(--transition-fast);
}

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

.analysis-card-icon {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--space-2);
}

.analysis-card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: var(--space-1);
}

.analysis-card-desc {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    flex: 1;
}

.analysis-result-container {
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    margin-top: var(--space-6);
}

.analysis-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--space-4);
}

.analysis-result-content {
    line-height: 1.7;
    color: var(--color-text);
}

.analysis-result-content h1,
.analysis-result-content h2,
.analysis-result-content h3,
.analysis-result-content h4,
.analysis-result-content h5 {
    margin-top: var(--space-5);
    margin-bottom: var(--space-2);
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.4;
}
.analysis-result-content h1 { font-size: var(--font-size-xl); border-bottom: 1px solid var(--color-border-light); padding-bottom: var(--space-2); }
.analysis-result-content h2 { font-size: var(--font-size-lg); border-left: 4px solid var(--color-primary); padding-left: var(--space-2); }
.analysis-result-content h3 { font-size: var(--font-size-base); color: var(--color-primary-dark); }
.analysis-result-content h4 { font-size: var(--font-size-sm); color: var(--color-text); }
.analysis-result-content h5 { font-size: var(--font-size-xs); color: var(--color-text-secondary); text-transform: uppercase; }

.analysis-result-content p {
    margin-bottom: var(--space-3);
    line-height: 1.7;
}

.analysis-result-content ul,
.analysis-result-content ol {
    margin-top: var(--space-2);
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}
.analysis-result-content ul {
    list-style-type: disc;
}
.analysis-result-content ol {
    list-style-type: decimal;
}
.analysis-result-content li {
    margin-bottom: var(--space-1);
    line-height: 1.6;
}

.analysis-result-content strong {
    font-weight: 700;
    color: var(--color-primary-dark);
}

.analysis-divider {
    border: none;
    border-top: 1px dashed var(--color-border);
    margin: var(--space-6) 0;
}

.analysis-quote {
    border-left: 3px solid var(--color-primary-light);
    background: var(--color-bg);
    padding: var(--space-3) var(--space-4);
    margin: var(--space-3) 0;
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.inline-code {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    padding: 1px 5px;
    border-radius: var(--radius-sm);
    font-family: monospace;
    font-size: 0.875em;
    color: var(--color-primary-dark);
}

.code-block {
    background: var(--color-bg-sidebar);
    color: #ffffff;
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    font-family: monospace;
    font-size: var(--font-size-xs);
    margin: var(--space-4) 0;
}

/* Settings Summary Panel */
.setup-summary {
    background: var(--color-bg);
    border-radius: var(--radius-md);
    padding: var(--space-4);
    margin-bottom: var(--space-6);
    border: 1px solid var(--color-border);
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border-light);
}

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

.summary-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.summary-value {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.test-result {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
    margin-top: var(--space-3);
    font-size: var(--font-size-sm);
    display: none;
}

.test-result.active {
    display: block;
}

.test-success {
    background: var(--color-success-light);
    color: #065f46;
    border: 1px solid #a7f3d0;
}

.test-error {
    background: var(--color-danger-light);
    color: #991b1b;
    border: 1px solid #fca5a5;
}

.test-loading {
    background: var(--color-info-light);
    color: #1e40af;
    border: 1px solid #93c5fd;
}