:root {
    --bg: #0d1117;
    --bg-card: #161b22;
    --bg-card-hover: #1c2129;
    --border: #30363d;
    --text: #e6edf3;
    --text-muted: #8b949e;
    --accent: #f7931a;
    --accent-dim: #c77616;
    --green: #3fb950;
    --red: #f85149;
    --yellow: #d29922;
    --link: #58a6ff;
    --mono: 'JetBrains Mono', 'Fira Code', monospace;
    --sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    font-size: 16px;
}

.container {
    max-width: 820px;
    margin: 0 auto;
    padding: 0 20px;
}

/* HEADER */
header {
    background: linear-gradient(135deg, #1a1e24 0%, #0d1117 100%);
    border-bottom: 1px solid var(--border);
    padding: 48px 0 40px;
    text-align: center;
}

header h1 {
    font-size: 2.4rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 8px;
    letter-spacing: -0.5px;
}

header .subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 500px;
    margin: 0 auto;
}

.tip-btn {
    display: inline-block;
    margin-top: 16px;
    padding: 10px 24px;
    background: transparent;
    border: 1px solid var(--accent);
    border-radius: 6px;
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all 0.2s;
}

.tip-btn:hover {
    background: var(--accent);
    color: #000;
    text-decoration: none;
}

/* CARDS */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 32px;
    margin: 24px 0;
}

.card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
}

.card h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin: 24px 0 10px;
    color: var(--text);
}

.card p {
    margin-bottom: 12px;
    color: var(--text-muted);
}

.card p strong {
    color: var(--text);
}

.card-warning {
    border-color: var(--yellow);
    background: #1a1700;
}

.card-tip {
    border-color: var(--accent);
    text-align: center;
}

/* TABLES */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    font-size: 0.9rem;
}

table td {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border);
    color: var(--text-muted);
}

table td:first-child {
    font-weight: 500;
    color: var(--text);
    white-space: nowrap;
    width: 180px;
}

table a {
    color: var(--link);
    text-decoration: none;
}

table a:hover {
    text-decoration: underline;
}

/* LISTS */
.card ul, .card ol {
    margin: 12px 0;
    padding-left: 24px;
    color: var(--text-muted);
}

.card li {
    margin-bottom: 8px;
}

.card li strong {
    color: var(--text);
}

/* SEARCH */
.search-box {
    display: flex;
    gap: 8px;
    margin: 20px 0 16px;
}

#address-input {
    flex: 1;
    padding: 14px 16px;
    font-family: var(--mono);
    font-size: 0.95rem;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s;
}

#address-input:focus {
    border-color: var(--accent);
}

#address-input::placeholder {
    color: #484f58;
    font-family: var(--sans);
    font-size: 0.85rem;
}

#search-btn {
    padding: 14px 28px;
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
    white-space: nowrap;
}

#search-btn:hover {
    background: var(--accent-dim);
}

#search-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* RESULTS */
.result {
    padding: 20px;
    border-radius: 6px;
    margin-top: 16px;
    font-size: 0.95rem;
}

.result.hidden {
    display: none;
}

.result-found {
    background: #0d2818;
    border: 1px solid var(--green);
}

.result-found .result-title {
    color: var(--green);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 12px;
}

.result-not-found {
    background: #1a1a1a;
    border: 1px solid var(--border);
}

.result-not-found .result-title {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.result-error {
    background: #2d1212;
    border: 1px solid var(--red);
    color: var(--red);
}

.result-detail {
    color: var(--text-muted);
    margin: 4px 0;
}

.result-detail code {
    font-family: var(--mono);
    color: var(--accent);
    font-size: 0.9rem;
}

.result-action {
    margin-top: 16px;
    padding-top: 12px;
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--text-muted);
}

.result-action a {
    color: var(--link);
    text-decoration: none;
}

.result-action a:hover {
    text-decoration: underline;
}

.partial-match {
    margin: 8px 0;
    padding: 8px 12px;
    background: rgba(255,255,255,0.03);
    border-radius: 4px;
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--text-muted);
}

.partial-match strong {
    color: var(--accent);
}

/* HIGHLIGHT BOX */
.highlight-box {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 16px;
    text-align: center;
    font-family: var(--mono);
    font-size: 1rem;
}

.highlight-box a {
    color: var(--link);
    text-decoration: none;
}

.highlight-box a:hover {
    text-decoration: underline;
}

/* TEMPLATE */
.template-box {
    position: relative;
    margin: 16px 0;
}

.template-box pre {
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 24px;
    font-family: var(--mono);
    font-size: 0.8rem;
    line-height: 1.5;
    color: var(--text-muted);
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
}

.copy-btn {
    padding: 8px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 4px;
    color: var(--text-muted);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
}

.copy-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.template-box .copy-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    z-index: 1;
}

/* TIP JAR */
.tip-address {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin: 20px 0;
    padding: 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 6px;
}

.tip-address code {
    font-family: var(--mono);
    font-size: 0.85rem;
    color: var(--accent);
    word-break: break-all;
}

.tip-note {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* FOOTER */
footer {
    border-top: 1px solid var(--border);
    padding: 32px 0;
    margin-top: 48px;
    text-align: center;
}

footer p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin: 4px 0;
}

/* LINKS */
a {
    color: var(--link);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* RESPONSIVE */
@media (max-width: 600px) {
    header {
        padding: 32px 0 28px;
    }

    header h1 {
        font-size: 1.8rem;
    }

    header .subtitle {
        font-size: 0.95rem;
    }

    .card {
        padding: 20px;
        margin: 16px 0;
    }

    .search-box {
        flex-direction: column;
    }

    #search-btn {
        width: 100%;
    }

    table td:first-child {
        width: auto;
    }

    .tip-address {
        flex-direction: column;
    }
}