/* ============================================
   Refined Technical Design System
   Email Verification Tool - Production Implementation
   ============================================ */

/* CSS Custom Properties - Design Tokens */
:root {
    /* Typography */
    --font-heading: 'IBM Plex Sans', 'Arial', sans-serif;
    --font-body: 'Inter', 'system-ui', sans-serif;
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-system: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    
    /* Brand Colors (Anthropic) */
    --color-dark: #141413;
    --color-light: #faf9f5;
    --color-mid-gray: #b0aea5;
    --color-light-gray: #e8e6dc;
    --color-orange: #d97757;
    --color-blue: #6a9bcc;
    --color-green: #788c5d;
    
    /* Status Colors */
    --color-valid: #788c5d;
    --color-risky: #d97757;
    --color-invalid: #c74338;
    --color-unknown: #b0aea5;
    
    /* Semantic Colors */
    --color-success: #788c5d;
    --color-warning: #d97757;
    --color-error: #c74338;
    --color-info: #6a9bcc;
    
    /* Background Colors */
    --color-bg-primary: #faf9f5;
    --color-bg-secondary: #ffffff;
    --color-bg-tertiary: #f3f4f6;
    --color-bg-dark: #141413;
    
    /* Text Colors */
    --color-text-primary: #141413;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;
    --color-text-inverse: #faf9f5;
    
    /* Border Colors */
    --color-border-light: #e8e6dc;
    --color-border-medium: #d1d5db;
    --color-border-strong: #9ca3af;
    --color-border-focus: #6a9bcc;
    
    /* Spacing (8px base) */
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-xxxl: 64px;
    
    /* Border Radius */
    --radius-none: 0px;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(20, 20, 19, 0.05);
    --shadow-md: 0 4px 6px rgba(20, 20, 19, 0.08);
    --shadow-lg: 0 10px 15px rgba(20, 20, 19, 0.1);
    --shadow-xl: 0 20px 25px rgba(20, 20, 19, 0.12);
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.2s ease;
    --transition-slow: 0.5s ease;
    
    /* Layout */
    --container-max-width: 1200px;
    --content-max-width: 900px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Layout Wrapper
   ============================================ */

.app-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================
   Header
   ============================================ */

.main-header {
    background-color: var(--color-bg-primary);
    border-bottom: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    background-color: rgba(250, 249, 245, 0.95);
}

.header-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--space-lg) var(--space-xl);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.main-nav {
    display: flex;
    gap: var(--space-lg);
    align-items: center;
}

.nav-link {
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    color: var(--color-dark);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover {
    color: var(--color-orange);
}

.nav-link-active {
    color: var(--color-orange);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-svg {
    height: 40px;
    width: auto;
}

.logo-tagline {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 400;
    color: var(--color-mid-gray);
    letter-spacing: 0.01em;
}

/* ============================================
   Main Content
   ============================================ */

.main-content {
    flex: 1;
    max-width: var(--content-max-width);
    width: 100%;
    margin: 0 auto;
    padding: var(--space-xxl) var(--space-xl);
}

.page-header {
    text-align: center;
    margin-bottom: var(--space-xxl);
}

.page-title {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    letter-spacing: -0.02em;
}

.page-subtitle {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* ============================================
   Cards
   ============================================ */

.card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.card-header {
    margin-bottom: var(--space-lg);
}

.card-title {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    letter-spacing: -0.01em;
}

.card-subtitle {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    line-height: 1.5;
    color: var(--color-text-primary);
    margin: var(--space-lg) 0 var(--space-md);
}

.card-error {
    border-color: var(--color-error);
    background-color: rgba(199, 67, 56, 0.05);
}

.card-error .card-title {
    color: var(--color-error);
}

.card-actions {
    margin-top: var(--space-lg);
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* ============================================
   Help Text
   ============================================ */

.help-text {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
    line-height: 1.5;
    margin-top: var(--space-xs);
}

/* ============================================
   API Key Section
   ============================================ */

.api-key-section {
    margin-bottom: var(--space-lg);
    padding: var(--space-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.api-key-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.api-key-label {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.api-key-controls {
    display: flex;
    gap: var(--space-xs);
    align-items: center;
}

.api-key-input {
    flex: 1;
    padding: var(--space-xs) var(--space-sm);
    font-family: var(--font-mono);
    font-size: 14px;
    border: 1px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
}

.api-key-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px rgba(16, 112, 202, 0.1);
}

.api-key-status {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 12px;
    margin-top: var(--space-xs);
}

.api-key-status.has-key {
    color: var(--color-success);
}

.api-key-status.no-key {
    color: var(--color-text-secondary);
}

.api-key-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--color-text-secondary);
}

.api-key-indicator.indicator-saved {
    background-color: var(--color-success);
}

/* ============================================
   Upload Progress
   ============================================ */

.upload-progress-container {
    margin: var(--space-md) 0;
    padding: var(--space-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
}

.upload-progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--color-bg-primary);
    border-radius: var(--radius-sm);
    overflow: hidden;
    margin-bottom: var(--space-xs);
}

.upload-progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    transition: width 0.2s ease;
    width: 0%;
}

.upload-progress-text {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-text-secondary);
    text-align: center;
}

/* ============================================
   Upload Area
   ============================================ */

.upload-area {
    border: 2px dashed var(--color-border-medium);
    border-radius: var(--radius-lg);
    padding: var(--space-xxxl) var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-base);
    margin-bottom: var(--space-md);
    background-color: rgba(250, 249, 245, 0.5);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(217, 119, 87, 0.03) 0%, rgba(106, 155, 204, 0.03) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.upload-area:hover::before,
.upload-area.dragover::before {
    opacity: 1;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--color-orange);
    background-color: rgba(217, 119, 87, 0.08);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.upload-content {
    pointer-events: none;
    position: relative;
    z-index: 1;
}

.upload-icon {
    font-size: 48px;
    margin-bottom: var(--space-md);
    line-height: 1;
    display: block;
}

.upload-text {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-text-primary);
    margin-bottom: var(--space-xs);
    font-weight: 500;
}

.upload-text .link {
    color: var(--color-blue);
    text-decoration: underline;
    cursor: pointer;
    font-weight: 500;
}

.upload-hint {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
    font-weight: 400;
}

/* ============================================
   File Info
   ============================================ */

.file-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-md);
    gap: var(--space-md);
    border: 1px solid var(--color-border-light);
}

.file-info-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex: 1;
    min-width: 0;
}

.file-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.file-name {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    word-break: break-all;
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   Buttons
   ============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: all var(--transition-fast);
    text-align: center;
    line-height: 1.5;
    text-decoration: none;
    position: relative;
    overflow: hidden;
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-primary {
    background-color: var(--color-orange);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
    background-color: #c86a4a;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    background-color: #b85a3a;
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background-color: var(--color-light-gray);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border-medium);
}

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-mid-gray);
    color: var(--color-text-inverse);
    border-color: var(--color-mid-gray);
}

.btn-danger {
    background-color: var(--color-error);
    color: var(--color-text-inverse);
    box-shadow: var(--shadow-sm);
}

.btn-danger:hover:not(:disabled) {
    background-color: #b0382a;
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.btn-small {
    padding: var(--space-xxs) var(--space-sm);
    font-size: 14px;
}

/* ============================================
   Job Info
   ============================================ */

.job-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    background-color: rgba(232, 230, 220, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-xxs);
}

.info-label {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.info-value {
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 16px;
}

.mono {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 400;
    background-color: rgba(250, 249, 245, 0.8);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
    display: inline-block;
}

/* ============================================
   Status Badges
   ============================================ */

.status-badge {
    display: inline-block;
    padding: var(--space-xxs) var(--space-sm);
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    align-self: flex-start;
}

.status-badge.queued {
    background-color: rgba(176, 174, 165, 0.2);
    color: var(--color-mid-gray);
    border: 1px solid rgba(176, 174, 165, 0.5);
}

.status-badge.running {
    background-color: rgba(106, 155, 204, 0.2);
    color: var(--color-blue);
    border: 1px solid rgba(106, 155, 204, 0.5);
}

.status-badge.completed {
    background-color: rgba(120, 140, 93, 0.2);
    color: var(--color-valid);
    border: 1px solid rgba(120, 140, 93, 0.5);
}

.status-badge.failed,
.status-badge.canceled {
    background-color: rgba(199, 67, 56, 0.2);
    color: var(--color-error);
    border: 1px solid rgba(199, 67, 56, 0.5);
}

/* ============================================
   Progress Bar
   ============================================ */

.progress-container {
    margin-bottom: var(--space-lg);
}

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

.progress-label {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
}

.progress-bar {
    height: 24px;
    background-color: var(--color-light-gray);
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-sm);
    position: relative;
    border: 1px solid var(--color-border-light);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-orange), var(--color-blue));
    border-radius: var(--radius-md);
    transition: width var(--transition-slow);
    position: relative;
    box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.2);
}

.progress-text-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    white-space: nowrap;
    text-shadow: 0 1px 2px rgba(255, 255, 255, 0.8);
}

.progress-footer {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.progress-count,
.progress-percent {
    font-family: var(--font-mono);
    font-size: 14px;
    font-weight: 500;
}

.processing-info {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background-color: rgba(232, 230, 220, 0.3);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.processing-label {
    font-weight: 500;
    margin-right: var(--space-xs);
}

/* ============================================
   Results Summary
   ============================================ */

.results-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.summary-item {
    text-align: center;
    padding: var(--space-lg);
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    border-left: 4px solid;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.summary-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.summary-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.summary-item .count {
    display: block;
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.summary-item .label {
    font-family: var(--font-body);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

.summary-valid {
    border-left-color: var(--color-valid);
}

.summary-valid .count {
    color: var(--color-valid);
}

.summary-risky {
    border-left-color: var(--color-risky);
}

.summary-risky .count {
    color: var(--color-risky);
}

.summary-unknown {
    border-left-color: var(--color-unknown);
}

.summary-unknown .count {
    color: var(--color-unknown);
}

.summary-invalid {
    border-left-color: var(--color-invalid);
}

.summary-invalid .count {
    color: var(--color-invalid);
}

/* ============================================
   Download Section
   ============================================ */

.download-section {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--color-border-light);
}

.section-title {
    font-family: var(--font-heading);
    font-size: 18px;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.01em;
}

.download-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.results-preview {
    margin-bottom: var(--space-lg);
}

/* ============================================
   Table
   ============================================ */

.table-container {
    overflow-x: auto;
    margin-bottom: var(--space-lg);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-none);
    background-color: var(--color-bg-secondary);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--font-body);
    font-size: 14px;
    background-color: var(--color-bg-secondary);
}

thead {
    background-color: var(--color-light-gray);
    position: sticky;
    top: 0;
    z-index: 10;
}

th {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--color-text-primary);
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 2px solid var(--color-mid-gray);
    letter-spacing: 0.05em;
}

td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
    font-family: var(--font-body);
    font-size: 14px;
}

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

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

td.mono,
td .mono {
    font-family: var(--font-mono);
    font-size: 14px;
}

.status-valid {
    color: var(--color-valid);
    font-weight: 600;
}

.status-risky {
    color: var(--color-risky);
    font-weight: 600;
}

.status-unknown {
    color: var(--color-unknown);
    font-weight: 600;
}

.status-invalid {
    color: var(--color-invalid);
    font-weight: 600;
}

.reasons-list {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-family: var(--font-body);
}

/* ============================================
   Error Section
   ============================================ */

.error-message {
    font-family: var(--font-body);
    font-size: 16px;
    color: var(--color-error);
    margin-bottom: var(--space-lg);
    line-height: 1.6;
    padding: var(--space-md);
    background-color: rgba(199, 67, 56, 0.1);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-error);
}

/* ============================================
   Recent Jobs Section
   ============================================ */

.recent-jobs-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.recent-job-item {
    display: flex;
    flex-direction: column;
    padding: var(--space-md);
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    gap: var(--space-md);
    margin-bottom: var(--space-sm);
}

.recent-job-item:hover {
    border-color: var(--color-border-medium);
    box-shadow: var(--shadow-sm);
}

.recent-job-item.expanded {
    border-color: var(--color-primary);
}

.job-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    cursor: pointer;
    user-select: none;
}

.job-header:hover {
    opacity: 0.8;
}

.job-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    flex: 1;
    min-width: 0;
    flex-wrap: wrap;
}

.expand-icon {
    font-size: 10px;
    color: var(--color-text-secondary);
    margin-right: var(--space-xs);
    transition: transform 0.2s ease;
}

.job-id {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.job-filename {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 120px;
}

.job-stats {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.job-actions {
    display: flex;
    gap: var(--space-xs);
    flex-shrink: 0;
}

.empty-state {
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
    text-align: center;
    padding: var(--space-xl);
    font-style: italic;
}

.job-details-expanded {
    padding: var(--space-md);
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--space-sm);
}

.job-detail-row {
    display: flex;
    justify-content: space-between;
    padding: var(--space-xs) 0;
    font-size: 13px;
}

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

.detail-value {
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: 12px;
}

.job-downloads {
    margin: var(--space-md) 0;
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

.download-buttons-group {
    display: flex;
    gap: var(--space-xs);
    flex-wrap: wrap;
}

.job-actions-expanded {
    margin-top: var(--space-md);
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border-light);
}

/* ============================================
   Footer
   ============================================ */

.main-footer {
    background-color: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-light);
    margin-top: var(--space-xxxl);
    padding: var(--space-xxl) var(--space-xl);
}

.footer-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    align-items: center;
    text-align: center;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    font-family: var(--font-body);
    font-size: 14px;
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
    font-weight: 400;
}

.footer-link:hover {
    color: var(--color-blue);
    text-decoration: underline;
}

.footer-separator {
    color: var(--color-mid-gray);
    margin: 0 var(--space-xxs);
}

.footer-branding {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--color-text-secondary);
}

.footer-brand-line {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.footer-logo {
    height: 20px;
    width: auto;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-logo:hover {
    opacity: 1;
}

.footer-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-xxs);
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-text-secondary);
}

.footer-version {
    font-weight: 500;
}

.footer-version .mono {
    font-family: var(--font-mono);
    font-size: 12px;
    font-weight: 500;
    background: none;
    padding: 0;
    border: none;
}

.footer-copyright {
    font-size: 12px;
    color: var(--color-text-tertiary);
}

/* ============================================
   Stats Cards
   ============================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-xl);
}

.stat-card {
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-base), transform var(--transition-base);
}

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

.stat-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stat-label {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-mid-gray);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-value {
    font-family: var(--font-heading);
    font-size: 32px;
    font-weight: 700;
    color: var(--color-dark);
    line-height: 1.2;
}

.stat-change {
    font-family: var(--font-body);
    font-size: 12px;
    color: var(--color-green);
}

/* ============================================
   Job History Filters
   ============================================ */

.job-history-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.filter-label {
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-dark);
}

.filter-select {
    font-family: var(--font-body);
    font-size: 14px;
    padding: 8px 12px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    background: var(--color-light);
    cursor: pointer;
    transition: border-color var(--transition-fast);
}

.filter-select:focus {
    border-color: var(--color-blue);
    outline: none;
}

.search-group {
    flex: 1;
    min-width: 200px;
}

.search-input {
    width: 100%;
    font-family: var(--font-body);
    font-size: 14px;
    padding: 8px 12px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    background: var(--color-light);
    transition: border-color var(--transition-fast);
}

.search-input:focus {
    border-color: var(--color-blue);
    outline: none;
}

.load-more-container {
    margin-top: var(--space-lg);
    text-align: center;
}

.btn-block {
    width: 100%;
}

/* ============================================
   Utility Classes
   ============================================ */

.hidden {
    display: none !important;
}

/* ============================================
   Responsive Design
   ============================================ */

@media (max-width: 768px) {
    .main-content {
        padding: var(--space-lg) var(--space-md);
    }

    .page-title {
        font-size: 24px;
    }

    .card {
        padding: var(--space-lg);
    }

    .results-summary {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .summary-item {
        padding: var(--space-md);
    }

    .summary-item .count {
        font-size: 24px;
    }

    .download-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .card-actions {
        flex-direction: column;
    }

    .upload-area {
        padding: var(--space-xl);
    }

    .job-info-grid {
        grid-template-columns: 1fr;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-xs);
    }

    .footer-separator {
        display: none;
    }
}

@media (max-width: 640px) {
    .results-summary {
        grid-template-columns: 1fr;
    }

    .table-container {
        font-size: 12px;
    }

    th, td {
        padding: var(--space-xxs) var(--space-sm);
    }

    .header-content {
        padding: var(--space-md) var(--space-lg);
    }

    .logo {
        font-size: 20px;
    }
}