:root {
    --bg-color: var(--tg-theme-bg-color, #ffffff);
    --text-color: var(--tg-theme-text-color, #000000);
    --hint-color: var(--tg-theme-hint-color, #999999);
    --link-color: var(--tg-theme-link-color, #2481cc);
    --button-color: var(--tg-theme-button-color, #2481cc);
    --button-text-color: var(--tg-theme-button-text-color, #ffffff);
    --secondary-bg-color: var(--tg-theme-secondary-bg-color, #f0f0f0);
    
    /* Premium Styling Additions */
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --border-radius-lg: 16px;
    --border-radius-md: 12px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 16px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

button {
    background-color: var(--button-color);
    color: var(--button-text-color);
    border: none;
    border-radius: var(--border-radius-md);
    padding: 12px 16px;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
    margin-bottom: 12px;
    font-weight: 600;
    transition: background-color 0.2s, transform 0.1s;
}

button:active {
    opacity: 0.8;
    transform: scale(0.98);
}

input, select, textarea {
    background-color: var(--secondary-bg-color);
    color: var(--text-color);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-md);
    padding: 12px;
    font-size: 16px;
    width: 100%;
    box-sizing: border-box;
    margin-bottom: 12px;
}

input:focus, select:focus, textarea:focus {
    outline: none;
    border-color: var(--button-color);
}

/* UI Loader Styles */
.ui-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background-color: rgba(0, 0, 0, 0.25);
    backdrop-filter: blur(4px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loader-spinner {
    width: 48px;
    height: 48px;
    border: 5px solid var(--secondary-bg-color);
    border-bottom-color: var(--button-color);
    border-radius: 50%;
    display: inline-block;
    box-sizing: border-box;
    animation: rotation 1s linear infinite;
}

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

/* Dashboard Styles */
.dashboard-container {
    max-width: 600px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.dashboard-header {
    margin-bottom: 8px;
}

.dashboard-header h2 {
    margin: 0;
    font-size: 24px;
    font-weight: 700;
}

.dashboard-header .subtitle {
    margin: 4px 0 0 0;
    color: var(--hint-color);
    font-size: 14px;
}

.section-title h3 {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

/* Bookings Card */
.bookings-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.booking-card {
    background-color: var(--secondary-bg-color);
    border-radius: var(--border-radius-lg);
    padding: 16px;
    box-shadow: var(--card-shadow);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.booking-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.booking-service {
    font-weight: 600;
    font-size: 16px;
}

.booking-master {
    font-size: 14px;
    color: var(--hint-color);
}

.booking-time {
    font-size: 14px;
    font-weight: 500;
    color: var(--button-color);
}

.booking-badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    background-color: var(--button-color);
    color: var(--button-text-color);
}

/* Services Grid Layout */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}

@media (min-width: 480px) {
    .services-grid {
        grid-template-columns: 1fr 1fr;
    }
}

.service-card {
    background-color: var(--bg-color);
    border: 1px solid rgba(0, 0, 0, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 16px;
    box-shadow: var(--card-shadow);
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.service-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.service-icon {
    font-size: 28px;
}

.service-details {
    display: flex;
    flex-direction: column;
    gap: 4px;
    flex-grow: 1;
}

.service-name {
    font-weight: 600;
    font-size: 16px;
}

.service-duration {
    font-size: 13px;
    color: var(--hint-color);
}

.service-price {
    font-weight: 700;
    font-size: 17px;
    color: var(--button-color);
    margin-top: 4px;
}

.book-service-btn {
    margin-bottom: 0;
    padding: 10px 14px;
    font-size: 14px;
}