:root {
    --bg-color: #0f172a;   /* Slate 900 */
    --card-bg: #1e293b;    /* Slate 800 */
    --text-main: #f1f5f9;  /* Slate 100 */
    --text-muted: #94a3b8; /* Slate 400 */
    --accent: #f59e0b;     /* Amber 500 */
    --accent-hover: #d97706;
    --border: #334155;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    padding: 20px;
    /* Prevent horizontal scroll on mobile if content overflows slightly */
    overflow-x: hidden; 
}

.container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 40px;
    padding-top: 20px;
}

h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: var(--accent);
    line-height: 1.2;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Search Bar */
.search-wrapper {
    margin-bottom: 30px;
    position: relative;
}

input[type="text"] {
    width: 100%;
    padding: 15px 20px;
    border-radius: 8px;
    border: 2px solid var(--border);
    background-color: var(--card-bg);
    color: var(--text-main);
    font-size: 1rem; /* 16px prevents iOS zoom on focus */
    outline: none;
    transition: border-color 0.2s;
    -webkit-appearance: none; /* Removes default iOS styling */
}

input[type="text"]:focus {
    border-color: var(--accent);
}

/* FAQ Categories */
.category {
    margin-bottom: 30px;
}

.category-title {
    font-size: 1.5rem;
    margin-bottom: 15px;
    border-bottom: 2px solid var(--border);
    padding-bottom: 10px;
    color: var(--text-muted);
}

/* Accordion Items */
details {
    background-color: var(--card-bg);
    margin-bottom: 15px;
    border-radius: 8px;
    border: 1px solid var(--border);
    overflow: hidden;
    transition: all 0.2s ease;
}

details:hover {
    border-color: var(--text-muted);
}

summary {
    padding: 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.1rem;
    list-style: none;
    position: relative;
    padding-right: 50px; /* Space for the icon */
    
    /* Remove default triangle in Webkit */
    -webkit-user-select: none;
    user-select: none;
}

summary::-webkit-details-marker {
    display: none;
}

/* Custom Icon for Summary */
summary::after {
    content: '+';
    position: absolute;
    right: 20px;
    top: 20px; /* Aligned to top for multi-line questions */
    font-size: 1.5rem;
    color: var(--accent);
    font-weight: bold;
    line-height: 1;
}

details[open] summary::after {
    content: '-';
}

details[open] {
    border-color: var(--accent);
}

.answer {
    padding: 0 20px 20px 20px;
    color: #cbd5e1;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

/* Code block handling - CRITICAL for Mobile */
.answer code {
    background-color: #0f172a;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', Courier, monospace;
    color: var(--accent);
    
    /* Ensures long strings (like crypto addresses) wrap nicely on phones */
    word-break: break-word; 
    white-space: pre-wrap; 
}

.answer a {
    color: var(--accent);
    text-decoration: none;
}

/* Footer */
footer {
    text-align: center;
    margin-top: 60px;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding-bottom: 40px;
}

/* Hidden Class for Search */
.hidden {
    display: none !important;
}

/* --- Mobile Specific Overrides --- */
@media (max-width: 600px) {
    body {
        padding: 15px;
    }

    header {
        margin-bottom: 30px;
    }

    h1 {
        font-size: 2rem;
    }

    .category-title {
        font-size: 1.3rem;
    }

    summary {
        font-size: 1rem;
        padding: 15px;
        padding-right: 45px;
    }

    summary::after {
        right: 15px;
        top: 15px;
    }

    .answer {
        padding: 0 15px 15px 15px;
    }
}