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

body {
    background: linear-gradient(135deg, #0a0c10, #0f1117);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.container {
    max-width: 500px;
    width: 100%;
}

.card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border-radius: 30px;
    padding: 30px;
    border: 1px solid rgba(79, 172, 254, 0.2);
}

.logo {
    text-align: center;
    margin-bottom: 25px;
}

.logo h1 {
    font-size: 28px;
    font-weight: 800;
    background: linear-gradient(135deg, #00f2fe, #4facfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo p {
    color: #888;
    font-size: 14px;
    margin-top: 5px;
}

.order-info {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    padding: 15px;
    margin-bottom: 25px;
}

.order-info p {
    color: #ccc;
    font-size: 13px;
    margin: 5px 0;
}

.order-info strong {
    color: #4facfe;
}

.upload-area {
    border: 2px dashed rgba(79, 172, 254, 0.3);
    border-radius: 20px;
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    margin-bottom: 20px;
}

.upload-area:hover {
    border-color: #4facfe;
    background: rgba(79, 172, 254, 0.05);
}

.upload-icon i {
    font-size: 48px;
    color: #4facfe;
    margin-bottom: 15px;
}

.upload-area p {
    color: #ccc;
    font-size: 14px;
}

.upload-area .small {
    font-size: 11px;
    color: #888;
    margin-top: 8px;
}

.preview-container {
    text-align: center;
    margin-bottom: 20px;
}

.preview-image {
    max-width: 200px;
    max-height: 200px;
    border-radius: 15px;
    border: 2px solid #4facfe;
    object-fit: cover;
}

.remove-btn {
    background: rgba(220, 53, 69, 0.2);
    border: 1px solid #dc3545;
    color: #dc3545;
    padding: 6px 12px;
    border-radius: 20px;
    cursor: pointer;
    margin-top: 10px;
    font-size: 12px;
    transition: all 0.2s;
}

.remove-btn:hover {
    background: rgba(220, 53, 69, 0.4);
}

.btn-submit {
    width: 100%;
    background: linear-gradient(135deg, #00f2fe, #4facfe);
    border: none;
    padding: 14px;
    border-radius: 15px;
    color: white;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: opacity 0.2s;
    margin-bottom: 12px;
}

.btn-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-submit:hover:not(:disabled) {
    opacity: 0.85;
}

.back-btn {
    width: 100%;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    padding: 12px;
    border-radius: 15px;
    color: white;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.back-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(5px);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-content i {
    font-size: 50px;
    color: #4facfe;
    margin-bottom: 15px;
    animation: spin 1s linear infinite;
}

.loading-content p {
    font-size: 16px;
}

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

.notification {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 40px;
    color: white;
    font-weight: 500;
    z-index: 1002;
    animation: slideIn 0.3s ease;
}

.notification.success {
    background: #28a745;
}

.notification.error {
    background: #dc3545;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

@media (max-width: 550px) {
    .card {
        padding: 20px;
    }
}