:root {
    --tg-theme-bg-color: #ffffff;
    --tg-theme-text-color: #000000;
    --tg-theme-hint-color: #999999;
    --tg-theme-link-color: #2481cc;
    --tg-theme-button-color: #2481cc;
    --tg-theme-button-text-color: #ffffff;
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --card-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--tg-theme-bg-color);
    color: var(--tg-theme-text-color);
    padding: 20px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 400px;
    animation: fadeIn 0.5s ease-in-out;
}

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

.card {
    background: var(--primary-gradient);
    border-radius: 20px;
    padding: 30px;
    box-shadow: var(--card-shadow);
    color: white;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease;
}

.card::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0%, 100% {
        transform: translate(0, 0);
    }
    50% {
        transform: translate(-30px, -30px);
    }
}

.card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 30px;
    position: relative;
    z-index: 1;
}

.logo {
    font-size: 32px;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.card-body {
    position: relative;
    z-index: 1;
    margin-bottom: 30px;
}

.user-name {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.card-number-label {
    font-size: 12px;
    opacity: 0.8;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.card-number {
    font-size: 18px;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    letter-spacing: 2px;
    margin-bottom: 25px;
}

.bonus-section {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 15px;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.bonus-label {
    font-size: 13px;
    opacity: 0.9;
    margin-bottom: 5px;
}

.bonus-amount {
    font-size: 32px;
    font-weight: 700;
    text-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.card-footer {
    position: relative;
    z-index: 1;
    background: white;
    border-radius: 12px;
    padding: 20px;
    text-align: center;
}

.barcode-container {
    margin-bottom: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 80px;
}

#barcode {
    max-width: 100%;
    height: auto;
}

.scan-hint {
    font-size: 12px;
    color: #666;
    font-weight: 500;
}

.refresh-btn {
    width: 100%;
    margin-top: 20px;
    padding: 16px;
    background: var(--tg-theme-button-color);
    color: var(--tg-theme-button-text-color);
    border: none;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

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

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

.refresh-icon {
    font-size: 18px;
    display: inline-block;
    transition: transform 0.3s ease;
}

.refresh-btn.loading .refresh-icon {
    animation: rotate 1s linear infinite;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.error-message {
    background: #ff4444;
    color: white;
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    font-size: 14px;
    text-align: center;
    animation: shake 0.5s ease;
}

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

/* Темная тема */
body.dark-theme {
    --tg-theme-bg-color: #1a1a1a;
    --tg-theme-text-color: #ffffff;
}

body.dark-theme .card-footer {
    background: #2a2a2a;
}

body.dark-theme .scan-hint {
    color: #999;
}