:root {
    --primary-color: #2c6ecf;
    --secondary-color: #f5f7fa;
    --accent-color: #4d90fe;
    --text-color: #333333;
    --light-text: #6e7c87;
    --border-color: #e1e5ea;
    --success-color: #34c759;
    --error-color: #ff3b30;
    --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    text-align: center;
    margin-bottom: 40px;
}

.logo {
    margin-bottom: 20px;
    display: flex;
    justify-content: center;
}

.logo img {
    height: 100px;
    width: auto;
    object-fit: contain;
    padding: 15px;
    background-color: #1a1a1a;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

header h1 {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--primary-color);
}

header p {
    color: var(--light-text);
    font-size: 1.1rem;
    margin-bottom: 20px;
}

.info-banner {
    background-color: rgba(44, 110, 207, 0.1);
    border-radius: 10px;
    padding: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    max-width: 600px;
}

.info-icon {
    background-color: var(--primary-color);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    margin-right: 10px;
    flex-shrink: 0;
}

.info-banner p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--primary-color);
}

.card {
    background-color: white;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    padding: 40px;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

input, textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 110, 207, 0.2);
}

.help-text {
    font-size: 0.85rem;
    color: var(--light-text);
    margin-top: 6px;
}

.file-upload {
    position: relative;
    margin-bottom: 10px;
}

.file-upload-preview {
    width: 120px;
    height: 120px;
    border: 2px dashed var(--border-color);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    overflow: hidden;
    transition: var(--transition);
    position: relative;
}

.file-upload-preview:hover {
    border-color: var(--primary-color);
}

.file-upload-preview img {
    max-width: 100%;
    max-height: 100%;
    object-fit: cover;
}

.file-upload-preview span {
    font-size: 0.8rem;
    color: var(--light-text);
    text-align: center;
    padding: 0 10px;
    position: absolute;
    bottom: 10px;
    background: rgba(255, 255, 255, 0.8);
    width: 100%;
}

.file-upload input[type="file"] {
    position: absolute;
    top: 0;
    left: 0;
    width: 120px;
    height: 120px;
    opacity: 0;
    cursor: pointer;
}

.preview-section {
    background-color: var(--secondary-color);
    border-radius: 12px;
    padding: 20px;
    margin: 30px 0;
}

.preview-section h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    color: var(--text-color);
}

.app-preview {
    display: flex;
    align-items: center;
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.app-icon-preview {
    width: 80px;
    height: 80px;
    border-radius: 16px;
    overflow: hidden;
    margin-right: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.app-icon-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.app-info-preview {
    flex: 1;
}

.app-info-preview h4 {
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.app-info-preview p {
    font-size: 0.9rem;
    color: var(--light-text);
    margin-bottom: 10px;
}

.app-store-badge {
    display: inline-block;
}

.app-store-badge img {
    height: 40px;
}

.submit-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 14px 28px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    width: 100%;
    transition: var(--transition);
}

.submit-btn:hover {
    background-color: #1e5bb7;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(44, 110, 207, 0.3);
}

.faq-section {
    margin-bottom: 40px;
}

.faq-section h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-color);
    text-align: center;
}

.faq-item {
    background-color: white;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.faq-question {
    padding: 15px 20px;
    font-weight: 500;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.faq-question:after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: var(--primary-color);
}

.faq-item.active .faq-question:after {
    content: '−';
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 20px 15px;
    max-height: 200px;
}

footer {
    text-align: center;
    color: var(--light-text);
    font-size: 0.9rem;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    margin-top: 10px;
}

.footer-links a {
    color: var(--primary-color);
    text-decoration: none;
    margin: 0 10px;
    font-size: 0.85rem;
}

.footer-links a:hover {
    text-decoration: underline;
}

/* Toast notifications */
.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 15px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    max-width: 400px;
    line-height: 1.5;
    white-space: pre-line;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.error-toast {
    background-color: var(--error-color);
}

.success-toast {
    background-color: var(--success-color);
}

.error-message {
    color: var(--error-color);
    font-size: 0.85rem;
    margin-top: 5px;
}

input.error, textarea.error {
    border-color: var(--error-color);
}

.file-upload-preview.has-image span {
    display: none;
}

/* Responsive styles */
@media (max-width: 768px) {
    .container {
        padding: 20px 15px;
    }
    
    .card {
        padding: 25px;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .info-banner {
        flex-direction: column;
        text-align: center;
    }
    
    .info-icon {
        margin-right: 0;
        margin-bottom: 10px;
    }
}

@media (max-width: 480px) {
    .app-preview {
        flex-direction: column;
        text-align: center;
    }
    
    .app-icon-preview {
        margin-right: 0;
        margin-bottom: 15px;
    }
    
    .footer-links {
        display: flex;
        flex-direction: column;
    }
    
    .footer-links a {
        margin: 5px 0;
    }
}