/* ========== Telegram Variables ========== */
:root {
    --tg-theme-bg-color: var(--tg-theme-bg-color, #f8f9fa);
    --tg-theme-text-color: var(--tg-theme-text-color, #1a1a1a);
    --tg-theme-hint-color: var(--tg-theme-hint-color, #999999);
    --tg-theme-link-color: var(--tg-theme-link-color, #6C63FF);
    --tg-theme-button-color: var(--tg-theme-button-color, #6C63FF);
    --tg-theme-button-text-color: var(--tg-theme-button-text-color, #ffffff);
    --tg-theme-secondary-bg-color: var(--tg-theme-secondary-bg-color, #ffffff);
    
    /* Дополнительные цвета */
    --primary: #6C63FF;
    --primary-dark: #5a52d5;
    --success: #4caf50;
    --warning: #ff9800;
    --danger: #f44336;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --border-radius: 12px;
    --box-shadow: 0 4px 20px rgba(108, 99, 255, 0.1);
}

/* ========== Base Styles ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -webkit-tap-highlight-color: transparent;
}

.app {
    max-width: 500px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ========== Screens ========== */
.screen {
    display: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.screen.active {
    display: block;
    opacity: 1;
}

/* ========== Header ========== */
.header {
    text-align: center;
    margin-bottom: 30px;
}

.header h1 {
    font-size: 28px;
    color: var(--primary);
    margin-bottom: 8px;
}

.subtitle {
    color: var(--tg-theme-hint-color);
    font-size: 14px;
}

/* ========== Cards ========== */
.card {
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    padding: 24px;
    box-shadow: var(--box-shadow);
    margin-bottom: 20px;
}

/* ========== Input ========== */
.input-label {
    display: block;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--tg-theme-text-color);
}

.date-input {
    width: 100%;
    padding: 16px;
    font-size: 18px;
    text-align: center;
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius);
    background: var(--tg-theme-secondary-bg-color);
    color: var(--tg-theme-text-color);
    transition: border-color 0.3s;
    letter-spacing: 2px;
}

.date-input:focus {
    outline: none;
    border-color: var(--primary);
}

.example {
    color: var(--tg-theme-hint-color);
    font-size: 13px;
    margin-top: 8px;
    margin-bottom: 20px;
    text-align: center;
}

/* ========== Buttons ========== */
.btn {
    width: 100%;
    padding: 16px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.btn-primary {
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    box-shadow: 0 4px 12px rgba(108, 99, 255, 0.3);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--tg-theme-text-color);
}

.btn-icon {
    font-size: 18px;
}

.back-btn {
    background: none;
    border: none;
    color: var(--primary);
    font-size: 16px;
    display: flex;
    align-items: center;
    gap: 4px;
    margin-bottom: 16px;
    cursor: pointer;
}

/* ========== Features ========== */
.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 20px;
}

.feature-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 12px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
    font-size: 12px;
    color: var(--tg-theme-hint-color);
}

.feature-icon {
    font-size: 24px;
}

/* ========== Loader ========== */
.loader {
    width: 60px;
    height: 60px;
    border: 5px solid var(--gray-200);
    border-top: 5px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 40px auto;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text {
    text-align: center;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.loading-subtext {
    text-align: center;
    color: var(--tg-theme-hint-color);
    font-size: 14px;
}

/* ========== Matrix Grid ========== */
.matrix-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin: 24px 0;
    padding: 16px;
    background: linear-gradient(145deg, var(--tg-theme-secondary-bg-color), var(--tg-theme-bg-color));
    border-radius: var(--border-radius);
}

.matrix-cell {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: var(--tg-theme-secondary-bg-color);
    border: 3px solid var(--primary);
    border-radius: 10px;
    font-weight: bold;
    transition: transform 0.2s;
}

.matrix-cell:hover {
    transform: scale(1.05);
}

.matrix-digit {
    font-size: 20px;
    color: var(--primary);
    opacity: 0.8;
}

.matrix-count {
    font-size: 32px;
    color: var(--tg-theme-text-color);
}

/* ========== Work Numbers ========== */
.work-numbers {
    margin: 20px 0;
    padding: 20px;
    background: var(--tg-theme-secondary-bg-color);
    border-radius: var(--border-radius);
}

.work-numbers h3 {
    margin-bottom: 16px;
    font-size: 18px;
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.number-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.number-label {
    font-size: 12px;
    color: var(--tg-theme-hint-color);
}

.number-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--primary);
}

/* ========== Analysis Tabs ========== */
.analysis-tabs {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
    margin: 20px 0;
}

.tab-btn {
    padding: 12px 4px;
    border: none;
    background: var(--gray-200);
    color: var(--tg-theme-text-color);
    border-radius: 8px;
    font-size: 13px;
    cursor: pointer;
    transition: all 0.3s;
}

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

.tab-content {
    background: var(--tg-theme-secondary-bg-color);
    padding: 20px;
    border-radius: var(--border-radius);
    min-height: 150px;
}

/* ========== Action Buttons ========== */
.action-buttons {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-top: 24px;
}

/* ========== Result Header ========== */
.result-header {
    text-align: center;
    margin-bottom: 20px;
}

.result-header h2 {
    font-size: 22px;
    color: var(--primary);
    margin-bottom: 8px;
}

.result-date {
    color: var(--tg-theme-hint-color);
    font-size: 16px;
}

/* ========== Responsive ========== */
@media (max-width: 400px) {
    .app {
        padding: 16px;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .analysis-tabs {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .action-buttons {
        grid-template-columns: 1fr;
    }
}

/* ========== Telegram Theme Adaptation ========== */
@media (prefers-color-scheme: dark) {
    :root {
        --tg-theme-bg-color: #1a1a1a;
        --tg-theme-text-color: #ffffff;
        --tg-theme-secondary-bg-color: #2d2d2d;
        --gray-200: #404040;
    }
}