/* ==================== Base Styles ==================== */
:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --surface: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ==================== Header ==================== */
.header {
    background: var(--surface);
    padding: 1rem 2rem;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 2rem;
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.contact-info .phone {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    background: var(--background);
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.contact-info .phone:hover {
    background: var(--primary-color);
    color: white;
}

/* ==================== Main Content ==================== */
.main {
    flex: 1;
    padding: 2rem;
}

.booking-section {
    max-width: 900px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 0.5rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

/* ==================== Program Cards ==================== */
.program-selector h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.program-cards {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 2rem;
}

.program-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    background: var(--surface);
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    padding: 0.75rem 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
    font: inherit;
    color: inherit;
}

.program-card .program-icon {
    font-size: 2rem;
    line-height: 40px;
    height: 40px;
    margin: 0;
}

.program-card .program-icon img {
    display: block;
}

.program-name {
    font-weight: 700;
    font-size: 1rem;
}

.program-venue {
    font-size: 0.8rem;
    color: var(--primary-color);
    font-weight: 500;
}

.program-meta {
    font-size: 0.72rem;
    color: var(--text-secondary);
}

@media (max-width: 600px) {
    .program-cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 0.5rem;
    }

    .program-card {
        padding: 0.5rem 0.35rem;
    }
}

.program-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.program-card.selected {
    border-color: var(--primary-color);
    background: linear-gradient(to bottom, rgba(99, 102, 241, 0.05), transparent);
}

.program-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.program-card h4 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.program-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.program-details {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 0.75rem;
}

.participants-info,
.age-info {
    display: inline-block;
    background: var(--background);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.venue-info {
    font-size: 0.85rem;
    color: var(--primary-color);
    font-weight: 500;
    padding-top: 0.5rem;
    border-top: 1px solid var(--border-color);
    margin-top: 0.5rem;
}

/* ==================== Calendar ==================== */
.calendar-section {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.calendar-section h3 {
    margin-bottom: 1rem;
}

.calendar-navigation {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1rem;
}

.nav-btn {
    background: var(--background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.2s;
}

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

.current-month {
    font-size: 1.25rem;
    font-weight: 600;
    min-width: 200px;
    text-align: center;
}

.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.calendar-header {
    text-align: center;
    padding: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.calendar-day {
    aspect-ratio: 1;
    min-height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.2s;
    font-weight: 500;
    position: relative;
}

.calendar-day:hover:not(.disabled):not(.empty) {
    background: var(--primary-color);
    color: white;
}

.calendar-day.selected {
    background: var(--primary-color);
    color: white;
}

.calendar-day.today {
    border: 2px solid var(--primary-color);
}

.calendar-day.disabled {
    color: var(--border-color);
    cursor: not-allowed;
}

.calendar-day.empty {
    cursor: default;
}

.calendar-day.has-slots::after {
    content: '';
    position: absolute;
    bottom: 4px;
    width: 6px;
    height: 6px;
    background: var(--secondary-color);
    border-radius: 50%;
}

.calendar-day.weekend {
    color: var(--danger-color);
}

.schedule-info {
    display: flex;
    gap: 2rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.schedule-label {
    font-weight: 600;
    color: var(--text-primary);
}

/* ==================== Time Slots ==================== */
.slots-section {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--shadow-sm);
}

.slots-section h3 {
    margin-bottom: 1rem;
}

.slots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
}

.slot {
    padding: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.slot:hover:not(.unavailable) {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.slot.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.slot.unavailable {
    background: var(--background);
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.6;
}

.slot.flexible {
    grid-column: 1 / -1;
    text-align: left;
    cursor: default;
}

.slot.flexible:hover {
    transform: none;
}

.slot-clock {
    display: block;
    margin-top: 0.6rem;
    font-size: 0.95rem;
}

.slot-clock input {
    display: block;
    margin-top: 0.35rem;
    font-size: 16px;
    padding: 0.45rem 0.6rem;
}

.slot-hint {
    grid-column: 1 / -1;
    margin: 0 0 0.35rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.slot-pick {
    width: auto;
    margin-top: 0.25rem;
}

.slot.pending {
    background: #fef3c7;
    border-color: var(--warning-color);
}

.slot-time {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.slot-status {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==================== Booking Form ==================== */
.booking-form-section {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem;
    box-shadow: var(--shadow-sm);
}

.booking-form-section h3 {
    margin-bottom: 1.5rem;
}

.form-summary {
    background: var(--background);
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.venue-summary {
    flex-basis: 100%;
    padding-top: 0.75rem;
    border-top: 1px dashed var(--border-color);
}

.summary-item {
    display: flex;
    gap: 0.5rem;
}

.summary-label {
    color: var(--text-secondary);
}

.summary-value {
    font-weight: 600;
}

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

@media (max-width: 600px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
}

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

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.field-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.deposit-info {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background: #f0fdf4;
    border: 1px solid #86efac;
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
}

.deposit-icon {
    font-size: 2rem;
}

.deposit-text strong {
    display: block;
    margin-bottom: 0.25rem;
}

.deposit-text p,
.deposit-terms {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.deposit-terms {
    margin: 0.75rem 0 0;
    padding-left: 1.1rem;
}

.deposit-terms li + li {
    margin-top: 0.35rem;
}

.telegram-bot-link {
    display: inline-block;
    margin-top: 0.35rem;
    font-weight: 600;
}

.deposit-credit-note {
    margin-top: 0.75rem;
    color: #166534;
    font-weight: 600;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    background: var(--primary-hover);
}

.submit-btn:disabled {
    background: var(--text-secondary);
    cursor: not-allowed;
}

/* ==================== Modal ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
}

.modal-content {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2rem;
    max-width: 400px;
    width: 100%;
    text-align: center;
    box-shadow: var(--shadow-lg);
}

.modal-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.modal-icon.error {
    color: var(--danger-color);
}

.modal-content h3 {
    margin-bottom: 1rem;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    flex-direction: column;
}

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: all 0.2s;
    border: none;
}

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

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

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

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

/* ==================== Footer ==================== */
.footer {
    background: var(--surface);
    border-top: 1px solid var(--border-color);
    padding: 2rem;
    margin-top: auto;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-info {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-copyright {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* ==================== Responsive ==================== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }
    
    .main {
        padding: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .calendar-day {
        font-size: 0.85rem;
    }
    
    .schedule-info {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .form-summary {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .footer-content {
        flex-direction: column;
        text-align: center;
    }
    
    .footer-info {
        flex-direction: column;
        gap: 0.5rem;
    }
}

.modal-content {
    max-height: 92vh;
    overflow-y: auto;
}

.modal-actions-stack {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.modal-actions-stack .btn {
    width: 100%;
    text-align: center;
    text-decoration: none;
}

.slot.pending {
    cursor: default;
}