:root {
    --bg: #070a12;
    --bg-alt: #0f1420;
    --accent: #4dd2ff;
    --accent-soft: rgba(77, 210, 255, 0.15);
    --text-main: #f5f7ff;
    --text-muted: #a5aec6;
    --border-subtle: #23273a;
    --danger: #ff4d6a;
    --font-main: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
}

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

body {
    background: radial-gradient(circle at top, #161b2a 0, #050711 55%);
    color: var(--text-main);
    font-family: var(--font-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    color: var(--accent);
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

.page {
    max-width: 960px;
    margin: 0 auto;
    padding: 24px 16px 48px;
    width: 100%;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-mark {
    width: 500px;
    height: 200px;
    /* border-radius: 10px;
    background: radial-gradient(circle at 20% 20%, #4dd2ff, #1b88ff);
    box-shadow: 0 0 18px rgba(77, 210, 255, 0.55); */
}

.logo-text {
    font-weight: 600;
    letter-spacing: 0.03em;
}

.tagline {
    font-size: 0.85rem;
    color: var(--text-muted);
}

main {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(0, 1fr);
    gap: 28px;
}

@media (max-width: 800px) {
    main {
    grid-template-columns: 1fr;
    }
    header {
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    }
}

.hero-title {
    font-size: clamp(2rem, 4vw, 2.6rem);
    line-height: 1.08;
    margin-bottom: 12px;
}

.hero-highlight {
    color: var(--accent);
}

.hero-subtitle {
    font-size: 0.96rem;
    color: var(--text-muted);
    max-width: 520px;
    margin-bottom: 18px;
}

.hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

.badge {
    padding: 4px 10px;
    border-radius: 999px;
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    font-size: 0.78rem;
    background: rgba(5, 8, 20, 0.9);
}

.badge-accent {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-soft);
}

.hero-note {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.hero-footer {
    margin-top: 18px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.card {
    background: linear-gradient(145deg, #0c101c, #050813);
    border-radius: 16px;
    padding: 18px 18px 20px;
    border: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow:
    0 28px 80px rgba(0, 0, 0, 0.75),
    0 0 0 1px rgba(255, 255, 255, 0.01) inset;
}

.card-header {
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.card-title {
    font-size: 0.95rem;
    font-weight: 600;
}

.card-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.pill {
    padding: 3px 8px;
    border-radius: 999px;
    border: 1px solid var(--border-subtle);
    font-size: 0.7rem;
    color: var(--text-muted);
}

form {
    margin-top: 8px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

label {
    font-size: 0.82rem;
    color: var(--text-muted);
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

input[type="file"],
input[type="text"] {
    background: #050711;
    color: var(--text-main);
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    padding: 8px 10px;
    font-size: 0.85rem;
}

input[type="file"] {
    padding: 6px 8px;
}

input:focus,
button:focus {
    outline: 1px solid var(--accent);
    outline-offset: 1px;
}

.btn-primary {
    margin-top: 4px;
    padding: 9px 12px;
    border-radius: 999px;
    border: none;
    background: linear-gradient(135deg, #4dd2ff, #1b88ff);
    color: #020309;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    box-shadow: 0 12px 40px rgba(27, 136, 255, 0.5);
}

.btn-primary:hover {
    filter: brightness(1.05);
}

.btn-secondary {
    margin-top: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--border-subtle);
    background: transparent;
    color: var(--text-muted);
    font-size: 0.78rem;
    cursor: pointer;
}

.hash-output {
    margin-top: 8px;
    padding: 8px 10px;
    border-radius: 10px;
    background: rgba(7, 9, 18, 0.95);
    border: 1px dashed var(--border-subtle);
    font-family: "SF Mono", ui-monospace, Menlo, Monaco, Consolas, monospace;
    font-size: 0.78rem;
    color: var(--accent);
    word-break: break-all;
    min-height: 42px;
    display: flex;
    align-items: center;
}

.hash-placeholder {
    color: var(--text-muted);
}

.steps {
    margin-top: 18px;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 12px;
}

.steps-title {
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 8px;
}

.steps-list {
    list-style: none;
    display: grid;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.steps-list li::before {
    content: "•";
    margin-right: 6px;
    color: var(--accent);
}

footer {
    margin-top: auto;
    padding: 12px 16px 20px;
    font-size: 0.76rem;
    color: var(--text-muted);
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    background: rgba(2, 3, 8, 0.9);
}