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

:root {
    --bg: #152315;
    --bg-soft: #1e2f1d;
    --surface: #243722;
    --surface-hover: #2e4629;
    --border: #3d5837;
    --text: #eaf5e4;
    --text-muted: #a8c69b;
    --yellow: #f0c05a;
    --orange: #e08a4c;
    --red: #d9684f;
    --green: #8bc34a;
    --aqua: #7fb069;
    --blue: #7cc5c0;
    --purple: #b48ead;
    --radius: 8px;
    --shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}

body {
    background:
        linear-gradient(rgba(21, 35, 21, 0.55), rgba(21, 35, 21, 0.72)),
        url("/src/jungle.jpg") center / cover fixed;
    color: var(--text);
    font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

.container {
    width: calc(100% - 40px);
    max-width: 800px;
    margin: 24px auto;
}

.hero {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 48px 24px;
    text-align: center;
    box-shadow: var(--shadow);
}

h1 {
    font-size: clamp(36px, 8vw, 56px);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--yellow);
    margin: 0;
    text-shadow: 2px 2px 0 rgba(0, 0, 0, 0.3);
}

.nickname {
    color: var(--orange);
    font-size: 18px;
    margin-top: 6px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

main {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-top: 20px;
}

.card {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    transition: border-color 0.2s ease;
}

.card:hover {
    border-color: var(--bg-soft);
}

h2 {
    font-size: clamp(20px, 4vw, 26px);
    font-weight: 600;
    margin: 0 0 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
    color: var(--yellow);
}

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

.card p:not(:first-child) {
    margin-top: 12px;
}

ul {
    list-style: disc;
    padding-left: 24px;
    margin-top: 12px;
}

li {
    color: var(--text);
}

li::marker {
    color: var(--orange);
}

.links {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.links a {
    display: block;
    background: var(--bg-soft);
    color: var(--blue);
    text-decoration: none;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.links a:hover {
    background: var(--surface-hover);
    color: var(--yellow);
    transform: translateX(4px);
}

.profile {
    text-align: center;
}

.profile-image {
    width: 180px;
    height: 180px;
    object-fit: cover;
    border-radius: 50%;
    border: 3px solid var(--border);
    margin: 8px auto 16px;
    display: block;
    box-shadow: var(--shadow);
}

footer {
    margin-top: 20px;
}

.btc-box {
    background: var(--surface);
    border: 2px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
}

.btc-address {
    position: relative;
    background: var(--bg-soft);
    color: var(--green);
    border: 1px solid var(--border);
    padding: 14px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 13px;
    word-break: break-all;
    border-radius: var(--radius);
    cursor: pointer;
    text-align: center;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.btc-address:hover {
    background: var(--surface-hover);
    border-color: var(--aqua);
}

.copy-status {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--bg-soft);
    color: var(--green);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 4px 10px;
    font-family: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
    font-size: 14px;
    white-space: nowrap;
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
    margin: 0;
    z-index: 10;
}

.copy-status.show {
    opacity: 1;
    transform: translateX(-50%) translateY(-4px);
}

@media (max-width: 600px) {
    .container {
        width: calc(100% - 24px);
        margin: 12px auto;
    }

    .hero {
        padding: 32px 16px;
    }

    .card,
    .btc-box {
        padding: 18px;
    }
}