/* styles.css */
:root {
    --primary-color: #6a5acd;
    --secondary-color: #9370db;
    --accent-color: #483d8b;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --success-color: #28a745;
    --info-color: #17a2b8;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.container {
    width: 100%;
    max-width: 1200px;
    background-color: white;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: calc(100vh - 40px);
}

header {
    background: linear-gradient(to right, var(--primary-color), var(--secondary-color));
    color: white;
    padding: 20px;
    text-align: center;
}

header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
    font-weight: 700;
}

header p {
    font-size: 1rem;
    opacity: 0.9;
}

.content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    padding: 20px;
    flex: 1;
    overflow: hidden;
}

@media (max-width: 768px) {
    .content {
        grid-template-columns: 1fr;
    }
}

.form-section, .preview-section {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 20px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.form-section {
    overflow-y: auto;
}

.section-title {
    font-size: 1.3rem;
    margin-bottom: 15px;
    color: var(--primary-color);
    border-bottom: 2px solid var(--secondary-color);
    padding-bottom: 8px;
}

.form-group {
    margin-bottom: 15px;
}

.form-row {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

.form-col {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 0.9rem;
}

input[type="text"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    font-size: 0.95rem;
    transition: var(--transition);
}

input[type="color"] {
    width: 100%;
    height: 40px;
    border: 1px solid #ddd;
    border-radius: var(--border-radius);
    cursor: pointer;
}

textarea {
    min-height: 200px;
    resize: vertical;
}

.buttons {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.btn {
    padding: 12px 20px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    flex: 1;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--info-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #138496;
    transform: translateY(-2px);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background-color: #c82333;
    transform: translateY(-2px);
}

.preview-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed #ddd;
    border-radius: var(--border-radius);
    padding: 15px;
    background-color: #f9f9f9;
}

.preview-image {
    max-width: 100%;
    max-height: 80%;
    object-fit: contain;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-radius: 5px;
}

.preview-placeholder {
    text-align: center;
    color: #999;
    font-size: 1rem;
}

.floating-btn {
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 999;
    background: linear-gradient(135deg, #6a5acd, #9370db);
    color: white;
    padding: 12px 20px;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(106, 90, 205, 0.3);
    font-weight: 500;
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: all 0.3s ease;
    transform: translateY(0);
    border: none;
    cursor: pointer;
}

.floating-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(106, 90, 205, 0.4);
    background: linear-gradient(135deg, #5a4acd, #8360db);
}

.floating-btn:active {
    transform: translateY(1px);
}

.floating-btn::before {
    content: "";
    display: inline-block;
    width: 20px;
    height: 20px;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="white"><path d="M10 20v-6h4v6h5v-8h3L12 3 2 12h3v8z"/></svg>');
    background-size: contain;
    margin-right: 8px;
}