diff --git a/styles.css b/styles.css
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index 0000000..1a004cf
--- /dev/null
+++ b/styles.css
@@ -0,0 +1,814 @@
+/* =============================================================
+   styles.css — Стили приложения «Сверка выручки водителей»
+   ============================================================= */
+
+/* ---------- Переменные и тема ---------- */
+:root {
+    --primary: #6366f1;
+    --primary-dark: #4f46e5;
+    --primary-light: #a5b4fc;
+    --bg-start: #4f46e5;
+    --bg-end: #7c3aed;
+    --surface: #ffffff;
+    --surface-alt: #f8fafc;
+    --text: #1e293b;
+    --text-secondary: #64748b;
+    --text-muted: #94a3b8;
+    --border: #e2e8f0;
+    --success: #10b981;
+    --success-bg: #d1fae5;
+    --success-text: #065f46;
+    --warning: #f59e0b;
+    --warning-bg: #fef3c7;
+    --warning-text: #92400e;
+    --danger: #ef4444;
+    --danger-bg: #fee2e2;
+    --danger-text: #991b1b;
+    --radius: 16px;
+    --radius-sm: 8px;
+    --radius-xs: 6px;
+    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.1);
+    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
+    --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
+}
+
+[data-theme="dark"] {
+    --bg-start: #111827;
+    --bg-end: #1e293b;
+    --surface: #1f2937;
+    --surface-alt: #111827;
+    --text: #f9fafb;
+    --text-secondary: #d1d5db;
+    --text-muted: #9ca3af;
+    --border: #374151;
+    --success-bg: #064e3b;
+    --success-text: #6ee7b7;
+    --warning-bg: #78350f;
+    --warning-text: #fcd34d;
+    --danger-bg: #7f1d1d;
+    --danger-text: #fca5a5;
+}
+
+/* ---------- Базовые стили ---------- */
+* {
+    margin: 0;
+    padding: 0;
+    box-sizing: border-box;
+}
+
+body {
+    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
+        'Helvetica Neue', Arial, sans-serif;
+    background: linear-gradient(160deg, var(--bg-start) 0%, var(--bg-end) 50%, #a855f7 100%);
+    min-height: 100vh;
+    color: var(--text);
+    line-height: 1.6;
+    -webkit-font-smoothing: antialiased;
+}
+
+/* ---------- Контейнер ---------- */
+.container {
+    max-width: 1100px;
+    margin: 0 auto;
+    padding: 2rem 1.5rem 4rem;
+    position: relative;
+    z-index: 1;
+}
+
+/* ---------- Hero ---------- */
+.hero {
+    text-align: center;
+    padding: 2rem 1rem 3rem;
+    color: white;
+}
+
+.hero-badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+    background: rgba(255, 255, 255, 0.15);
+    backdrop-filter: blur(10px);
+    padding: 0.4rem 1rem;
+    border-radius: 20px;
+    font-size: 0.85rem;
+    font-weight: 500;
+    margin-bottom: 1.25rem;
+    border: 1px solid rgba(255, 255, 255, 0.2);
+}
+
+.hero h1 {
+    font-size: clamp(1.8rem, 4vw, 2.75rem);
+    font-weight: 800;
+    letter-spacing: -0.02em;
+    margin-bottom: 0.75rem;
+    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
+}
+
+.hero-subtitle {
+    font-size: 1.05rem;
+    opacity: 0.9;
+    max-width: 650px;
+    margin: 0 auto;
+    line-height: 1.7;
+}
+
+/* ---------- Карточки ---------- */
+.card {
+    background: var(--surface);
+    border-radius: var(--radius);
+    box-shadow: var(--shadow-lg);
+    margin-bottom: 1.5rem;
+    overflow: hidden;
+    transition: box-shadow var(--transition);
+}
+
+.card:hover {
+    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
+}
+
+.card-head {
+    display: flex;
+    align-items: center;
+    gap: 1rem;
+    padding: 1.25rem 2rem;
+    border-bottom: 1px solid var(--border);
+    background: var(--surface-alt);
+}
+
+.step-badge {
+    width: 36px;
+    height: 36px;
+    border-radius: 10px;
+    background: linear-gradient(135deg, var(--primary), var(--bg-end));
+    color: white;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-weight: 700;
+    font-size: 1rem;
+    flex-shrink: 0;
+}
+
+.card-head h2 {
+    font-size: 1.25rem;
+    font-weight: 700;
+}
+
+.card-body {
+    padding: 2rem;
+}
+
+/* ---------- Dropzone ---------- */
+.dropzone {
+    border: 2px dashed var(--border);
+    border-radius: 12px;
+    padding: 3rem 2rem;
+    text-align: center;
+    cursor: pointer;
+    transition: all var(--transition);
+    background: var(--surface-alt);
+}
+
+.dropzone:hover,
+.dropzone.dragover {
+    border-color: var(--primary);
+    background: #eef2ff;
+    transform: scale(1.01);
+}
+
+[data-theme="dark"] .dropzone:hover,
+[data-theme="dark"] .dropzone.dragover {
+    background: #1e1b4b;
+}
+
+.dropzone.dragover {
+    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.15);
+}
+
+.dropzone-icon {
+    width: 72px;
+    height: 72px;
+    margin: 0 auto 1.25rem;
+    background: linear-gradient(135deg, #eef2ff, #e0e7ff);
+    border-radius: 50%;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: transform var(--transition);
+}
+
+[data-theme="dark"] .dropzone-icon {
+    background: linear-gradient(135deg, #312e81, #4338ca);
+}
+
+.dropzone:hover .dropzone-icon {
+    transform: scale(1.1);
+}
+
+.dropzone-title {
+    font-size: 1.1rem;
+    font-weight: 600;
+    margin-bottom: 0.5rem;
+}
+
+.dropzone-hint {
+    font-size: 0.9rem;
+    color: var(--text-secondary);
+    max-width: 450px;
+    margin: 0 auto;
+}
+
+/* ---------- Список файлов ---------- */
+.file-list {
+    margin-top: 1.5rem;
+}
+
+.file-item {
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+    padding: 0.75rem 1rem;
+    background: var(--surface-alt);
+    border-radius: var(--radius-sm);
+    margin-bottom: 0.5rem;
+    border: 1px solid var(--border);
+    animation: slideIn 0.3s ease;
+}
+
+.file-item.file-error {
+    border-color: var(--danger);
+    background: var(--danger-bg);
+}
+
+@keyframes slideIn {
+    from {
+        opacity: 0;
+        transform: translateY(-8px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+.file-icon {
+    width: 36px;
+    height: 36px;
+    border-radius: 8px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.1rem;
+    flex-shrink: 0;
+}
+
+.file-icon.vedomost {
+    background: #dbeafe;
+}
+
+[data-theme="dark"] .file-icon.vedomost {
+    background: #1e3a5f;
+}
+
+.file-icon.transaction {
+    background: #fef3c7;
+}
+
+[data-theme="dark"] .file-icon.transaction {
+    background: #5c3d0e;
+}
+
+.file-info {
+    flex: 1;
+    min-width: 0;
+}
+
+.file-name {
+    font-size: 0.9rem;
+    font-weight: 600;
+    white-space: nowrap;
+    overflow: hidden;
+    text-overflow: ellipsis;
+}
+
+.file-type {
+    font-size: 0.8rem;
+    color: var(--text-muted);
+}
+
+.file-remove {
+    width: 28px;
+    height: 28px;
+    border: none;
+    background: transparent;
+    border-radius: 6px;
+    cursor: pointer;
+    color: var(--text-muted);
+    font-size: 1.1rem;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    transition: all var(--transition);
+}
+
+.file-remove:hover {
+    background: var(--danger-bg);
+    color: var(--danger);
+}
+
+/* ---------- Кнопки ---------- */
+.actions {
+    display: flex;
+    gap: 0.75rem;
+    margin-top: 1.5rem;
+    flex-wrap: wrap;
+}
+
+.btn {
+    padding: 0.75rem 1.75rem;
+    border: none;
+    border-radius: 10px;
+    font-size: 0.95rem;
+    font-weight: 600;
+    cursor: pointer;
+    transition: all var(--transition);
+    display: inline-flex;
+    align-items: center;
+    gap: 0.5rem;
+    white-space: nowrap;
+}
+
+.btn:disabled {
+    opacity: 0.4;
+    cursor: not-allowed;
+    transform: none !important;
+}
+
+.btn-primary {
+    background: linear-gradient(135deg, var(--primary), var(--bg-end));
+    color: white;
+    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.35);
+}
+
+.btn-primary:hover:not(:disabled) {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.45);
+}
+
+.btn-outline {
+    background: transparent;
+    color: var(--text-secondary);
+    border: 1.5px solid var(--border);
+}
+
+.btn-outline:hover:not(:disabled) {
+    background: var(--surface-alt);
+    border-color: var(--text-muted);
+}
+
+.btn-success {
+    background: linear-gradient(135deg, #10b981, #059669);
+    color: white;
+    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
+}
+
+.btn-success:hover:not(:disabled) {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
+}
+
+.btn-export {
+    background: linear-gradient(135deg, #f59e0b, #d97706);
+    color: white;
+}
+
+.btn-export:hover:not(:disabled) {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(245, 158, 11, 0.4);
+}
+
+.btn-theme {
+    background: linear-gradient(135deg, #94a3b8, #64748b);
+    color: white;
+}
+
+.btn-theme:hover:not(:disabled) {
+    transform: translateY(-2px);
+}
+
+.btn-danger {
+    background: linear-gradient(135deg, #ef4444, #dc2626);
+    color: white;
+}
+
+.btn-danger:hover:not(:disabled) {
+    transform: translateY(-2px);
+    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
+}
+
+/* ---------- Прогресс-бар ---------- */
+.progress-bar {
+    width: 100%;
+    height: 4px;
+    background: var(--border);
+    border-radius: 2px;
+    overflow: hidden;
+    margin-top: 1rem;
+    display: none;
+}
+
+.progress-bar.active {
+    display: block;
+}
+
+.progress-fill {
+    height: 100%;
+    background: linear-gradient(90deg, var(--primary), var(--bg-end));
+    border-radius: 2px;
+    width: 0%;
+}
+
+/* ---------- Таблицы ---------- */
+.table-wrap {
+    overflow-x: auto;
+    border-radius: var(--radius-sm);
+    border: 1px solid var(--border);
+}
+
+table {
+    width: 100%;
+    border-collapse: collapse;
+    font-size: 0.875rem;
+}
+
+thead {
+    background: var(--surface-alt);
+}
+
+th,
+td {
+    padding: 0.75rem 1rem;
+    border-bottom: 1px solid var(--border);
+    text-align: left;
+}
+
+th {
+    font-weight: 600;
+    color: var(--text-secondary);
+    white-space: nowrap;
+    user-select: none;
+}
+
+th[data-key]::after {
+    content: ' ↕';
+    opacity: 0.3;
+    font-size: 0.75rem;
+}
+
+th.sort-asc::after {
+    content: ' ↑';
+    opacity: 1;
+    color: var(--primary);
+}
+
+th.sort-desc::after {
+    content: ' ↓';
+    opacity: 1;
+    color: var(--primary);
+}
+
+tbody tr:hover {
+    background: var(--surface-alt);
+}
+
+tbody tr:last-child td {
+    border-bottom: none;
+}
+
+/* ---------- Бейджи ---------- */
+.badge {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.3rem;
+    padding: 0.2rem 0.65rem;
+    border-radius: 6px;
+    font-size: 0.8rem;
+    font-weight: 600;
+}
+
+.badge-ok {
+    background: var(--success-bg);
+    color: var(--success-text);
+}
+
+.badge-warn {
+    background: var(--warning-bg);
+    color: var(--warning-text);
+}
+
+.badge-err {
+    background: var(--danger-bg);
+    color: var(--danger-text);
+}
+
+/* ---------- Вкладки ---------- */
+.tabs-wrapper {
+    border-bottom: 2px solid var(--border);
+    margin-bottom: 1.5rem;
+    display: flex;
+    gap: 0.25rem;
+    overflow-x: auto;
+    scrollbar-width: none;
+}
+
+.tabs-wrapper::-webkit-scrollbar {
+    display: none;
+}
+
+.tab-btn {
+    padding: 0.75rem 1.25rem;
+    background: none;
+    border: none;
+    border-bottom: 2.5px solid transparent;
+    cursor: pointer;
+    font-size: 0.9rem;
+    font-weight: 600;
+    color: var(--text-muted);
+    white-space: nowrap;
+    transition: all var(--transition);
+    margin-bottom: -2px;
+}
+
+.tab-btn:hover {
+    color: var(--primary);
+}
+
+.tab-btn.active {
+    color: var(--primary);
+    border-bottom-color: var(--primary);
+}
+
+.tab-btn .count {
+    display: inline-flex;
+    align-items: center;
+    justify-content: center;
+    min-width: 20px;
+    height: 20px;
+    background: var(--primary-light);
+    color: var(--primary-dark);
+    border-radius: 10px;
+    font-size: 0.75rem;
+    padding: 0 6px;
+    margin-left: 0.35rem;
+}
+
+.tab-panel {
+    display: none;
+    animation: fadeUp 0.3s ease;
+}
+
+.tab-panel.active {
+    display: block;
+}
+
+@keyframes fadeUp {
+    from {
+        opacity: 0;
+        transform: translateY(8px);
+    }
+    to {
+        opacity: 1;
+        transform: translateY(0);
+    }
+}
+
+/* ---------- Пустое состояние ---------- */
+.empty-state {
+    text-align: center;
+    padding: 3rem 1rem;
+}
+
+.empty-state-icon {
+    font-size: 4rem;
+    margin-bottom: 1rem;
+    opacity: 0.3;
+}
+
+.empty-state p {
+    color: var(--text-muted);
+}
+
+/* ---------- Информационная карточка ---------- */
+.info-card {
+    background: var(--surface);
+    border-radius: var(--radius);
+    box-shadow: var(--shadow-md);
+    overflow: hidden;
+}
+
+.info-head {
+    padding: 1.25rem 2rem;
+    border-bottom: 1px solid var(--border);
+    background: var(--surface-alt);
+    display: flex;
+    align-items: center;
+    gap: 0.75rem;
+}
+
+.info-head h2 {
+    font-size: 1.25rem;
+    font-weight: 700;
+}
+
+.info-grid {
+    padding: 1.5rem 2rem;
+    display: grid;
+    gap: 1.25rem;
+}
+
+.info-block {
+    display: flex;
+    gap: 1rem;
+    padding: 1.25rem;
+    background: var(--surface-alt);
+    border-radius: 12px;
+    border: 1px solid var(--border);
+    transition: border-color var(--transition);
+}
+
+.info-block:hover {
+    border-color: var(--primary-light);
+}
+
+.info-block-icon {
+    width: 42px;
+    height: 42px;
+    border-radius: 10px;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    font-size: 1.25rem;
+    flex-shrink: 0;
+}
+
+.info-block-icon.blue {
+    background: #dbeafe;
+}
+
+[data-theme="dark"] .info-block-icon.blue {
+    background: #1e3a5f;
+}
+
+.info-block-icon.green {
+    background: #d1fae5;
+}
+
+[data-theme="dark"] .info-block-icon.green {
+    background: #064e3b;
+}
+
+.info-block-icon.amber {
+    background: #fef3c7;
+}
+
+[data-theme="dark"] .info-block-icon.amber {
+    background: #78350f;
+}
+
+.info-block-icon.purple {
+    background: #ede9fe;
+}
+
+[data-theme="dark"] .info-block-icon.purple {
+    background: #2e1065;
+}
+
+.info-block-icon.rose {
+    background: #ffe4e6;
+}
+
+[data-theme="dark"] .info-block-icon.rose {
+    background: #4c0519;
+}
+
+.info-block-title {
+    font-weight: 700;
+    font-size: 0.95rem;
+    margin-bottom: 0.35rem;
+}
+
+.info-block-text {
+    font-size: 0.9rem;
+    color: var(--text-secondary);
+    line-height: 1.65;
+}
+
+/* ---------- Сводка (выводы) ---------- */
+.summary-card {
+    padding: 1rem 0;
+}
+
+.summary-card .info-block {
+    border-left: 4px solid var(--success);
+}
+
+.summary-card .info-block.warn {
+    border-left-color: var(--warning);
+}
+
+.summary-card .info-block.err {
+    border-left-color: var(--danger);
+}
+
+/* ---------- Подвал ---------- */
+.footer {
+    text-align: center;
+    padding: 2rem 1rem;
+    color: rgba(255, 255, 255, 0.6);
+    font-size: 0.85rem;
+}
+
+/* ---------- Адаптивность ---------- */
+@media (max-width: 768px) {
+    .container {
+        padding: 1rem 0.75rem 3rem;
+    }
+
+    .hero {
+        padding: 1.5rem 0.5rem 2rem;
+    }
+
+    .card-head {
+        padding: 1rem 1.25rem;
+    }
+
+    .card-body {
+        padding: 1.25rem;
+    }
+
+    .dropzone {
+        padding: 2rem 1rem;
+    }
+
+    .actions {
+        flex-direction: column;
+    }
+
+    .btn {
+        width: 100%;
+        justify-content: center;
+    }
+
+    .info-grid {
+        padding: 1rem;
+    }
+
+    .info-block {
+        flex-direction: column;
+    }
+
+    th,
+    td {
+        padding: 0.5rem 0.75rem;
+    }
+}
+
+/* ---------- Специфические утилиты ---------- */
+code {
+    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
+    font-size: 0.85em;
+    background: var(--surface-alt);
+    padding: 0.1em 0.3em;
+    border-radius: 4px;
+    border: 1px solid var(--border);
+}
+
+.text-success {
+    color: var(--success);
+}
+
+.text-danger {
+    color: var(--danger);
+}
+
+.text-warning {
+    color: var(--warning);
+}
+
+.text-muted {
+    color: var(--text-muted);
+}
+
+.diff-positive {
+    color: var(--danger);
+    font-weight: 600;
+}
+
+.diff-negative {
+    color: var(--success);
+    font-weight: 600;
+}
+
+.diff-zero {
+    color: var(--text-muted);
+}
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