/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #a855f7 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

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

.upload-card {
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.logo-container {
    text-align: center;
    margin-bottom: 40px;
}

.logo-placeholder {
    display: inline-block;
    margin-bottom: 20px;
    background: #2d3748;
    padding: 20px 30px;
    border-radius: 12px;
}

h1 {
    color: #333;
    font-size: 28px;
    font-weight: 600;
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #4a5568;
    font-weight: 500;
    font-size: 14px;
}

.field-hint {
    display: block;
    margin-top: 6px;
    color: #718096;
    font-size: 13px;
    line-height: 1.4;
}

input[type="password"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 16px;
    transition: all 0.3s ease;
    outline: none;
}

input[type="password"]:focus {
    border-color: #a855f7;
    box-shadow: 0 0 0 3px rgba(168, 85, 247, 0.1);
}

.file-input-wrapper {
    position: relative;
}

input[type="file"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.file-input-display {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border: 2px dashed #cbd5e0;
    border-radius: 10px;
    background: #f7fafc;
    transition: all 0.3s ease;
}

.file-input-display:hover {
    border-color: #a855f7;
    background: #faf5ff;
}

.file-name {
    flex: 1;
    color: #718096;
    font-size: 14px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-primary,
.btn-secondary {
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
}

.btn-primary {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #a855f7 100%);
    color: white;
    margin-top: 8px;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(168, 85, 247, 0.4);
}

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

.btn-secondary {
    background: #667eea;
    color: white;
    white-space: nowrap;
}

.btn-secondary:hover {
    background: #5a67d8;
}

.spinner-container {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid #e2e8f0;
    border-top-color: #667eea;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

.spinner-text {
    text-align: center;
    color: #4a5568;
    font-size: 14px;
    font-weight: 600;
}

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

.message-container {
    margin-top: 24px;
}

.message {
    padding: 16px;
    border-radius: 10px;
    font-size: 14px;
    font-weight: 500;
    text-align: center;
}

.message.success {
    background: #c6f6d5;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

.message.error {
    background: #fed7d7;
    color: #742a2a;
    border: 1px solid #fc8181;
}

.game-link-container {
    margin-top: 16px;
    padding: 16px;
    background: #f7fafc;
    border-radius: 10px;
    border: 1px solid #e2e8f0;
}

.game-url {
    display: block;
    margin-bottom: 12px;
    color: #667eea;
    font-size: 13px;
    word-break: break-all;
    text-decoration: none;
    font-weight: 500;
}

.game-url:hover {
    color: #5a67d8;
    text-decoration: underline;
}

.btn-game-visit {
    width: 100%;
    padding: 12px 24px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    outline: none;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #a855f7 100%);
    color: white;
}

.btn-game-visit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(168, 85, 247, 0.4);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.upload-card {
    animation: fadeIn 0.5s ease;
}