@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');

:root {
    --primary-color: #4a90e2;
    --background-color: #f4f7f9;
    --text-color: #333;
    --card-background: #ffffff;
    --shadow-color: rgba(0, 0, 0, 0.08);
    --border-color: #e0e6ed;
    --success-color: #4caf50;
    --light-gray: #f8f9fa;
    --medium-gray: #e9ecef;
}

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

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    text-align: center;
    margin-bottom: 2.5rem;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

header p {
    font-size: 1.1rem;
    color: #666;
}

.card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 1.8rem 2.2rem;
    box-shadow: 0 4px 20px var(--shadow-color);
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-areas:
        "basic-info tech-stack"
        "custom-rules custom-rules";
    gap: 2rem;
    margin-bottom: 0;
}

#basic-info-card { grid-area: basic-info; }
#tech-stack-card { grid-area: tech-stack; }
#custom-rules-card { 
    grid-area: custom-rules; 
    margin-bottom: 0;
}

.rules-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem 2rem;
}

.icon {
    margin-right: 0.7rem;
    vertical-align: middle;
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.8rem;
    display: flex;
    align-items: center;
}

.form-group {
    margin-bottom: 0;
}

.form-group-hint-inline {
    margin-left: 1rem;
    color: #777;
    font-size: 0.9em;
    align-self: center;
}

.form-group-hint-inline code {
    background-color: var(--medium-gray);
    padding: 2px 5px;
    border-radius: 4px;
}


label, legend {
    display: block;
    font-weight: 500;
    margin-bottom: 0.7rem;
    font-size: 1rem;
}

input[type="text"],
textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
    font-family: 'Noto Sans SC', sans-serif;
    background-color: #fdfdfd;
}

input[type="text"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.2);
}

.rules-grid .form-group {
    display: flex;
    flex-direction: column;
}

.rules-grid textarea {
    flex-grow: 1;
    resize: vertical;
    min-height: 120px;
}

#ruleLanguage {
    height: 45px;
}

fieldset {
    border: none;
    margin-bottom: 1.5rem;
    padding: 0;
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center; /* Vertically align items */
}

.checkbox-group input[type="checkbox"] {
    display: none;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    background-color: var(--light-gray);
    padding: 0.7rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s, color 0.3s, box-shadow 0.3s;
    font-weight: 400;
    border: 1px solid var(--border-color);
}

.checkbox-group label:hover {
    background-color: var(--medium-gray);
}

.checkbox-group input[type="checkbox"]:checked + label {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(74, 144, 226, 0.3);
}

#deliverables-card .checkbox-group label {
    font-size: 0.95rem;
}

.action-card {
    text-align: center;
    padding: 0;
    background: none;
    border: none;
    box-shadow: none;
    margin-bottom: 2rem;
}

#generateBtn {
    display: inline-block;
    width: auto;
    padding: 1rem 3rem;
    background: linear-gradient(45deg, #5a9ff0, #4a90e2);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(74, 144, 226, 0.4);
}

#generateBtn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(74, 144, 226, 0.5);
}

.output-area {
    margin-top: 2rem;
}

#outputJson {
    background-color: #2d3748;
    color: #f7fafc;
    padding: 1.5rem;
    border-radius: 8px;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 600px;
    overflow-y: auto;
}

#copyBtn {
    display: block;
    margin-top: 1.5rem;
    padding: 0.7rem 1.5rem;
    background-color: var(--success-color);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.3s;
    font-size: 1rem;
}

#copyBtn:hover {
    background-color: #45a049;
}

.hidden {
    display: none;
}

footer {
    text-align: center;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    color: #888;
}

@media (max-width: 1200px) {
    .form-grid {
        grid-template-columns: 1fr;
        grid-template-areas:
            "basic-info"
            "tech-stack"
            "custom-rules";
    }
}

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