/* ============================================================================
   International Typographic Style - Swiss Design System
   ============================================================================ */

:root {
    /* Colors */
    --color-white: #ffffff;
    --color-black: #000000;
    --color-red: #e63946;
    --color-gray-light: #f5f5f5;
    --color-gray-medium: #e0e0e0;
    --color-gray-dark: #333333;
    --color-success: #2d6a4f;
    --color-warning: #f77f00;
    --color-error: #d62828;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
    --font-size-base: 14px;
    --font-size-small: 12px;
    --font-size-large: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 28px;
    --font-size-3xl: 36px;
    --line-height-base: 1.6;
    --line-height-tight: 1.2;

    /* Spacing (8px grid) */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    --spacing-3xl: 64px;

    /* Borders */
    --border-width: 1px;
    --border-color: var(--color-black);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.15);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 300ms ease-in-out;
}

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

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

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);
    line-height: var(--line-height-base);
    color: var(--color-black);
    background-color: var(--color-white);
}

/* ============================================================================
   Header & Navigation
   ============================================================================ */

.header {
    background-color: var(--color-white);
    border-bottom: var(--border-width) solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    text-transform: uppercase;
}

.nav {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-link {
    font-size: var(--font-size-base);
    text-decoration: none;
    color: var(--color-black);
    border-bottom: 2px solid transparent;
    padding-bottom: var(--spacing-xs);
    transition: border-color var(--transition-fast);
    cursor: pointer;
}

.nav-link:hover {
    border-bottom-color: var(--color-black);
}

.nav-link.active {
    border-bottom-color: var(--color-red);
    color: var(--color-red);
}

/* ============================================================================
   Main Container & Layout
   ============================================================================ */

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

.main {
    flex: 1;
    max-width: 1400px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-md);
}

/* ============================================================================
   Sections
   ============================================================================ */

.section {
    display: none;
    animation: fadeIn var(--transition-base);
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.section-header {
    margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--spacing-md);
}

.divider-line {
    width: 64px;
    height: 2px;
    background-color: var(--color-red);
    margin-bottom: var(--spacing-lg);
}

/* ============================================================================
   Statistics Grid
   ============================================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.stat-card {
    padding: var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--color-white);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    transition: all var(--transition-base);
}

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

.stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-red);
    line-height: var(--line-height-tight);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-gray-dark);
}

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

.card {
    padding: var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--color-white);
    margin-bottom: var(--spacing-lg);
}

.card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.01em;
}

.status-content {
    margin-bottom: var(--spacing-lg);
}

.status-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
    border-bottom: var(--border-width) solid var(--color-gray-medium);
}

.status-row:last-child {
    border-bottom: none;
}

.status-label {
    font-weight: 600;
    color: var(--color-gray-dark);
    min-width: 150px;
}

.status-value {
    color: var(--color-black);
    font-weight: 500;
}

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

.progress-bar {
    flex: 1;
    height: 8px;
    background-color: var(--color-gray-light);
    border: var(--border-width) solid var(--border-color);
    margin: 0 var(--spacing-md);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--color-red);
    transition: width var(--transition-base);
}

/* ============================================================================
   Forms
   ============================================================================ */

.config-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

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

label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-base);
}

.form-input,
.filter-select {
    width: 100%;
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--color-white);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
}

.form-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--color-red);
    box-shadow: 0 0 0 2px rgba(230, 57, 70, 0.1);
}

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

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--color-white);
    color: var(--color-black);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

.btn:active {
    transform: scale(0.98);
}

.btn-primary {
    background-color: var(--color-red);
    color: var(--color-white);
    border-color: var(--color-red);
}

.btn-primary:hover {
    background-color: #d62828;
    border-color: #d62828;
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-black);
    border-color: var(--color-black);
}

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

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

/* ============================================================================
   Tables
   ============================================================================ */

.queue-controls,
.logs-controls {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    align-items: center;
}

.filter-select {
    flex: 1;
    max-width: 200px;
}

.queue-table,
.logs-table {
    border: var(--border-width) solid var(--border-color);
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    background-color: var(--color-white);
}

thead {
    background-color: var(--color-gray-light);
    border-bottom: var(--border-width) solid var(--border-color);
}

th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 700;
    font-size: var(--font-size-small);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-gray-dark);
}

td {
    padding: var(--spacing-md);
    border-bottom: var(--border-width) solid var(--color-gray-medium);
    font-size: var(--font-size-base);
}

tbody tr:hover {
    background-color: var(--color-gray-light);
}

.empty-row td {
    text-align: center;
    color: var(--color-gray-dark);
    padding: var(--spacing-xl);
}

.status-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 2px;
    font-size: var(--font-size-small);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.status-pending {
    background-color: #fff3cd;
    color: #856404;
    border: var(--border-width) solid #ffc107;
}

.status-uploading {
    background-color: #cfe2ff;
    color: #084298;
    border: var(--border-width) solid #0d6efd;
}

.status-completed {
    background-color: #d1e7dd;
    color: #0f5132;
    border: var(--border-width) solid #198754;
}

.status-failed {
    background-color: #f8d7da;
    color: #842029;
    border: var(--border-width) solid #f5c2c7;
}

/* ============================================================================
   Toast Notifications
   ============================================================================ */

.toast {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-black);
    color: var(--color-white);
    border-radius: 2px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-base);
    pointer-events: none;
    max-width: 400px;
    z-index: 1000;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

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

.toast.error {
    background-color: var(--color-error);
}

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

/* ============================================================================
   Modal
   ============================================================================ */

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 999;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background-color: var(--color-white);
    padding: var(--spacing-lg);
    max-width: 800px;
    max-height: 80vh;
    overflow-y: auto;
    border: var(--border-width) solid var(--border-color);
    position: relative;
}

.modal-content h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-lg);
}

.modal-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    color: var(--color-black);
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-close:hover {
    color: var(--color-red);
}

.preview-content {
    background-color: var(--color-gray-light);
    padding: var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    max-height: 500px;
    overflow-y: auto;
    font-family: "Courier New", monospace;
    font-size: var(--font-size-small);
    white-space: pre-wrap;
    word-break: break-all;
}

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

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .nav {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .main {
        padding: var(--spacing-lg) var(--spacing-md);
    }

    .stats-grid {
        grid-template-columns: 1fr 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .queue-table,
    .logs-table {
        font-size: var(--font-size-small);
    }

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

    .section-header h2 {
        font-size: var(--font-size-2xl);
    }

    .modal-content {
        max-width: 90vw;
        max-height: 90vh;
    }
}

@media (max-width: 480px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }

    .queue-controls {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-select {
        max-width: none;
    }

    .nav {
        gap: var(--spacing-sm);
    }

    .nav-link {
        font-size: var(--font-size-small);
    }
}