:root {
    /* Colors - High Clarity Theme */
    --bg-color: #f0f4f8;
    /* Cool neutral background */
    --card-bg: #ffffff;
    --text-primary: #102a43;
    /* Deep Navy */
    --text-secondary: #486581;
    /* Slate */
    --accent-color: #334e68;

    /* Action Colors */
    --primary-btn: #0077cc;
    /* Clear accessible blue */
    --primary-btn-hover: #005fa3;
    --primary-btn-text: #ffffff;

    /* Elements */
    --code-bg: #e2e8f0;
    /* Darker Silver/Gray for clear separation */
    --code-text: #1a202c;
    /* Near Black */

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;

    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-card: 0 4px 12px rgba(16, 42, 67, 0.08);
    --shadow-hover: 0 8px 24px rgba(16, 42, 67, 0.12);

    /* Transitions */
    --transition-fast: 0.2s ease-out;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding-bottom: var(--spacing-xl);
}

/* Layout */
.container {
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-sm);
    flex: 1;
}

header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

h1 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
}

.subtitle {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
}

.last-updated {
    display: inline-block;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
    background: #e1e7ef;
    padding: 4px 12px;
    border-radius: 99px;
}

/* CARDS Grid (Index) */
.app-grid {
    display: grid;
    gap: var(--spacing-sm);
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    text-decoration: none;
    color: var(--text-primary);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-card);
    border: 1px solid rgba(0, 0, 0, 0.02);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

.app-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background-color: #f0f4f8;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-btn);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.05);
}

.app-info h2 {
    font-size: 1.15rem;
    font-weight: 700;
}

.app-info p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Detail Content */
main.detail-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

/* The Code Widget - Clear Action */
.code-box {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    box-shadow: var(--shadow-card);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    border: 2px solid transparent;
    /* Prepare for hover */
}

.code-box:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-btn);
}

.code-display {
    display: block;
    background: var(--code-bg);
    padding: 20px 10px;
    border-radius: var(--radius-sm);
    font-family: 'JetBrains Mono', monospace;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--code-text);
    margin-bottom: var(--spacing-md);
    letter-spacing: 2px;
    border: 2px solid #cbd5e0;
    /* Stronger border */
}

/* The "Button" look for the hint */
.tap-hint {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--primary-btn);
    color: var(--primary-btn-text);
    padding: 10px 24px;
    border-radius: 99px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color var(--transition-fast);
    box-shadow: 0 2px 6px rgba(0, 119, 204, 0.3);
}

.code-box:hover .tap-hint {
    background-color: var(--primary-btn-hover);
}

/* Instructions */
.instructions-section h3 {
    font-size: 1rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
    border-left: 4px solid var(--primary-btn);
    padding-left: 12px;
}

.instructions-section ol {
    background: var(--card-bg);
    padding: var(--spacing-md) var(--spacing-md) var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.instructions-section li {
    margin-bottom: 8px;
    font-weight: 500;
}

/* Privacy - Soft */
.privacy-section {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: rgba(255, 255, 255, 0.5);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.privacy-icon {
    color: #10b981;
    flex-shrink: 0;
    margin-top: 2px;
}

.privacy-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Footer Nav */
.footer-nav {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.back-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 8px 16px;
    border-radius: 6px;
    transition: background var(--transition-fast);
}

.back-link:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

/* Toast */
.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #102a43;
    color: white;
    padding: 14px 28px;
    border-radius: 99px;
    font-weight: 600;
    opacity: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.19, 1, 0.22, 1);
    z-index: 1000;
    display: flex;
    align-items: center;
    gap: 10px;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Utility Classes for Custom Content */
.mb-2 {
    margin-bottom: 0.5rem;
}

.text-sm {
    font-size: 0.85rem;
}

.text-secondary {
    color: var(--text-secondary);
}

.instructions-section a {
    color: var(--primary-btn);
    text-decoration: underline;
}

.instructions-section a:hover {
    text-decoration: none;
}

/* Review Box Styles */
.review-box {
    background-color: #ffffff;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid rgba(0, 0, 0, 0.05);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
    margin-top: var(--spacing-sm);
}

.review-title {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-primary);
}

.review-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.7;
}