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

:root {
    --primary: #6366F1;
    --primary-dark: #4F46E5;
    --secondary: #8B5CF6;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;
    --bg-dark: #0F172A;
    --bg-medium: #1E293B;
    --bg-light: #334155;
    --text-primary: #F1F5F9;
    --text-secondary: #94A3B8;
    --border: #475569;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1a2e 100%);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Сторінка входу */
.login-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 450px;
}

.login-box {
    background: var(--bg-medium);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
                0 0 40px rgba(99, 102, 241, 0.1);
    border: 1px solid var(--border);
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.logo {
    text-align: center;
    margin-bottom: 30px;
}

.logo h1 {
    font-size: 2em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.9em;
}

/* Форми */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9em;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1em;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1),
                0 0 20px rgba(99, 102, 241, 0.3);
}

/* Повзунки */
.slider {
    width: 100%;
    height: 8px;
    border-radius: 10px;
    background: var(--bg-dark);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    transition: all 0.3s ease;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
    transition: all 0.3s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.8);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    cursor: pointer;
    border: none;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.5);
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin: 0;
}

.checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    margin-right: 10px;
    cursor: pointer;
    accent-color: var(--primary);
}

/* Кнопки */
.btn-primary,
.btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.6);
}

.btn-primary:active {
    transform: translateY(0);
}

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

.btn-secondary:hover {
    background: var(--bg-medium);
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(99, 102, 241, 0.3);
}

.btn-large {
    width: 100%;
    padding: 16px;
    font-size: 1.1em;
}

.btn-small {
    padding: 8px 16px;
    font-size: 0.9em;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Повідомлення про помилки */
.error-message {
    padding: 12px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    border-radius: 8px;
    color: var(--error);
    margin-bottom: 15px;
    display: none;
    animation: shake 0.3s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.login-info {
    margin-top: 20px;
    padding: 15px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: 10px;
    text-align: center;
    font-size: 0.85em;
    color: var(--text-secondary);
}

/* Dashboard */
.header {
    background: var(--bg-medium);
    border-bottom: 1px solid var(--border);
    padding: 20px 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.5em;
    background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.username {
    color: var(--text-secondary);
    font-size: 0.9em;
}

.container {
    max-width: 1400px;
    margin: 30px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 30px;
}

.settings-panel,
.upload-panel,
.tasks-panel {
    background: var(--bg-medium);
    border-radius: 15px;
    padding: 25px;
    border: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.settings-panel {
    grid-row: span 2;
}

.settings-panel h2,
.upload-panel h2,
.tasks-panel h2 {
    margin-bottom: 20px;
    font-size: 1.3em;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.button-group button {
    flex: 1;
}

/* Upload Area */
.upload-area {
    border: 2px dashed var(--border);
    border-radius: 15px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area.drag-over {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
}

.upload-icon {
    font-size: 3em;
    margin-bottom: 10px;
}

.upload-hint {
    color: var(--text-secondary);
    margin: 10px 0;
}

/* File List */
.file-list {
    margin: 20px 0;
}

.file-item {
    background: var(--bg-dark);
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.file-item button {
    background: var(--error);
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 5px;
    cursor: pointer;
}

/* Tasks */
.tasks-list {
    max-height: 600px;
    overflow-y: auto;
}

.task-item {
    background: var(--bg-dark);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
    animation: slideIn 0.3s ease;
}

.task-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.task-status {
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85em;
    font-weight: 600;
}

.status-pending {
    background: rgba(148, 163, 184, 0.2);
    color: var(--text-secondary);
}

.status-processing {
    background: rgba(245, 158, 11, 0.2);
    color: var(--warning);
}

.status-completed {
    background: rgba(16, 185, 129, 0.2);
    color: var(--success);
}

.status-failed {
    background: rgba(239, 68, 68, 0.2);
    color: var(--error);
}

.empty-state {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-medium);
    padding: 30px;
    border-radius: 15px;
    max-width: 500px;
    width: 90%;
    border: 1px solid var(--border);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content h3 {
    margin-bottom: 20px;
}

.modal-content input {
    width: 100%;
    padding: 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.modal-buttons {
    display: flex;
    gap: 10px;
}

.modal-buttons button {
    flex: 1;
}

.presets-list {
    max-height: 400px;
    overflow-y: auto;
}

.preset-item {
    background: var(--bg-dark);
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.preset-item button {
    padding: 8px 12px;
    margin-left: 5px;
}

/* Responsive */
@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
    }
    
    .settings-panel {
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 15px;
    }
    
    .button-group {
        flex-direction: column;
    }
}
.toast {
  background-color: rgba(60, 60, 60, 0.9);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  margin-top: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.3);
  min-width: 200px;
  font-size: 0.9em;
  animation: fadeInOut 4s forwards;
}

@keyframes fadeInOut {
  0% { opacity: 0; transform: translateY(20px); }
  10% { opacity: 1; transform: translateY(0); }
  90% { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(20px); }
}