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

:root {
    --primary-color: #4A90E2;
    --success-color: #7ED321;
    --danger-color: #D0021B;
    --warning-color: #F5A623;
    --gray-100: #F8F9FA;
    --gray-200: #E9ECEF;
    --gray-300: #DEE2E6;
    --gray-600: #6C757D;
    --gray-800: #343A40;
    --gray-900: #212529;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--gray-900);
    background-color: var(--gray-100);
}

/* Контейнер */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Навигация */
header {
    background: white;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    margin-bottom: 30px;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    gap: 15px;
    align-items: center;
}

.nav-links a {
    color: var(--gray-800);
    text-decoration: none;
    padding: 8px 15px;
    border-radius: 5px;
    transition: background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--gray-200);
}

/* Кнопки */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-block;
}

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

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

.btn-primary:hover:not(:disabled) {
    background: #357ABD;
}

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

.btn-success:hover:not(:disabled) {
    background: #6CB91A;
}

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

.btn-danger:hover:not(:disabled) {
    background: #B00118;
}

.btn-secondary {
    background: var(--gray-600);
    color: white;
}

.btn-secondary:hover:not(:disabled) {
    background: var(--gray-800);
}

.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
}

.btn-lg {
    padding: 15px 30px;
    font-size: 18px;
}

/* Аутентификация */
.auth-container {
    max-width: 400px;
    margin: 50px auto;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.auth-tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--gray-300);
}

.tab-btn {
    flex: 1;
    padding: 10px;
    background: none;
    border: none;
    font-size: 16px;
    cursor: pointer;
    color: var(--gray-600);
    transition: all 0.2s;
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
    margin-bottom: -2px;
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    margin-bottom: 20px;
    text-align: center;
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--gray-300);
    border-radius: 5px;
    font-size: 16px;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: var(--gray-600);
    font-size: 14px;
}

.error-message {
    color: var(--danger-color);
    margin: 10px 0;
    font-size: 14px;
}

/* Баланс */
.balance-card {
    background: linear-gradient(135deg, var(--primary-color), #357ABD);
    color: white;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.balance-card.large {
    padding: 30px;
}

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

.balance-label {
    font-size: 18px;
}

.balance-amount {
    font-size: 32px;
    font-weight: bold;
}

.daily-limit {
    font-size: 14px;
    opacity: 0.9;
}

/* Тексты */
.texts-section {
    margin-top: 30px;
}

.texts-list {
    display: grid;
    gap: 20px;
    margin-top: 20px;
}

.text-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    transition: transform 0.2s;
}

.text-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.text-card h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.text-card .difficulty {
    display: inline-block;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: bold;
    text-transform: uppercase;
}

.difficulty-easy { background: var(--success-color); color: white; }
.difficulty-medium { background: var(--warning-color); color: white; }
.difficulty-hard { background: var(--danger-color); color: white; }

.text-card .preview {
    color: var(--gray-600);
    margin: 10px 0;
}

.text-card .text-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
}

.text-card .text-header h3 {
    margin: 0 0 10px 0;
}

.text-card .text-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

/* Запись */
.record-container {
    max-width: 800px;
    margin: 0 auto;
}

.text-display {
    background: white;
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.text-content {
    font-size: 18px;
    line-height: 1.8;
    margin-top: 20px;
}

.recorder-controls {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    text-align: center;
}

.recorder-status {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
    font-size: 18px;
}

.status-indicator {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--gray-300);
}

.status-indicator.recording {
    background: var(--danger-color);
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.timer {
    font-size: 48px;
    font-weight: bold;
    margin: 20px 0;
    color: var(--primary-color);
}

#visualizer {
    width: 100%;
    max-width: 600px;
    height: 100px;
    margin: 20px auto;
    background: var(--gray-100);
    border-radius: 5px;
}

.control-buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
    margin-top: 20px;
}

.upload-progress {
    margin-top: 20px;
}

.progress-bar {
    width: 100%;
    height: 30px;
    background: var(--gray-200);
    border-radius: 15px;
    overflow: hidden;
    margin-bottom: 10px;
}

.progress-fill {
    height: 100%;
    background: var(--primary-color);
    transition: width 0.3s;
}

.success-message {
    margin-top: 20px;
    padding: 15px;
    background: var(--success-color);
    color: white;
    border-radius: 5px;
}

.success-message a {
    color: white;
    text-decoration: underline;
}

/* История */
.history-container,
.admin-container {
    margin-top: 30px;
}

.balance-section {
    margin-bottom: 30px;
}

.sessions-list,
.withdrawals-list {
    display: grid;
    gap: 20px;
    margin-top: 20px;
}

.session-card,
.withdrawal-card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.session-header,
.withdrawal-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--gray-200);
}

.session-header h3,
.withdrawal-header h3 {
    margin: 0;
}

.session-header small,
.withdrawal-header small {
    color: var(--gray-600);
    display: block;
    margin-top: 5px;
}

.session-status {
    padding: 6px 12px;
    border-radius: 5px;
    font-size: 14px;
    font-weight: bold;
}

.status-pending {
    background: var(--warning-color);
    color: white;
}

.status-approved,
.status-completed {
    background: var(--success-color);
    color: white;
}

.status-rejected,
.status-cancelled {
    background: var(--danger-color);
    color: white;
}

.session-info,
.withdrawal-info {
    display: grid;
    gap: 10px;
}

.info-item {
    display: flex;
    justify-content: space-between;
}

.info-item .label {
    color: var(--gray-600);
}

.info-item .price {
    color: var(--success-color);
    font-weight: bold;
}

.session-actions,
.withdrawal-actions {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--gray-200);
}

/* Админ-панель */
.admin-tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.admin-tabs .tab-btn {
    flex: 0;
    background: white;
    border: 2px solid var(--gray-300);
    border-radius: 5px;
    padding: 10px 20px;
}

.admin-tabs .tab-btn.active {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.filters {
    background: white;
    padding: 15px;
    border-radius: 5px;
    display: flex;
    gap: 15px;
    align-items: center;
    margin-bottom: 20px;
}

.filters label {
    display: flex;
    align-items: center;
    gap: 10px;
}

.filters select {
    padding: 8px;
    border: 1px solid var(--gray-300);
    border-radius: 5px;
}

/* Модальные окна */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 30px;
    border-radius: 10px;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

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

.modal-content.modal-large {
    max-width: 800px;
}

.modal-content textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--gray-300);
    border-radius: 5px;
    font-size: 16px;
    font-family: inherit;
    resize: vertical;
}

.modal-content textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.modal-buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

/* Вспомогательные классы */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--gray-600);
}

.empty-state {
    text-align: center;
    padding: 40px;
    color: var(--gray-600);
    background: white;
    border-radius: 10px;
}

.error {
    color: var(--danger-color);
    text-align: center;
    padding: 20px;
}

/* Адаптивность */
@media (max-width: 768px) {
    .nav-links {
        flex-wrap: wrap;
    }

    .balance-amount {
        font-size: 24px;
    }

    .timer {
        font-size: 36px;
    }

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

    .btn-lg {
        width: 100%;
    }

    .session-header,
    .withdrawal-header {
        flex-direction: column;
        gap: 10px;
    }

    .session-actions,
    .withdrawal-actions {
        flex-direction: column;
    }

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

    .filters label {
        flex-direction: column;
        align-items: stretch;
    }

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

/* Продвинутый аудиоплеер */
#waveformCanvas {
    cursor: pointer;
    border-radius: 8px;
}

#progressBar {
    -webkit-appearance: none;
    appearance: none;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    outline: none;
}

#progressBar::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    transition: all 0.2s;
}

#progressBar::-webkit-slider-thumb:hover {
    background: #357ABD;
    transform: scale(1.2);
}

#progressBar::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    border: none;
    transition: all 0.2s;
}

#progressBar::-moz-range-thumb:hover {
    background: #357ABD;
    transform: scale(1.2);
}

#volumeSlider {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    outline: none;
}

#volumeSlider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
}

#volumeSlider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--primary-color);
    cursor: pointer;
    border-radius: 50%;
    border: none;
}

.speed-btn {
    min-width: 50px;
}

#volumeValue {
    min-width: 45px;
    font-size: 14px;
    color: var(--gray-600);
}

/* Чипы временных меток текстов */
.text-timestamp-chip {
    padding: 8px 14px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
}

.text-timestamp-chip:hover {
    background: #357ABD;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(74, 144, 226, 0.3);
}

.text-timestamp-chip:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px rgba(74, 144, 226, 0.2);
}