/* CloudUnit converter — styles v1.3.2 */
* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0f1117;
    --card: #1a1d27;
    --card-2: #22263340;
    --accent: #6c63ff;
    --accent2: #ff6584;
    --text: #e4e6eb;
    --muted: #8b8fa3;
    --border: #2a2d3a;
    --success: #4ade80;
    --radius: 14px;
    --shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

html, body { height: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: radial-gradient(1200px 600px at 50% -10%, rgba(108, 99, 255, 0.15), transparent 60%), var(--bg);
    color: var(--text);
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font: inherit; }

/* Header */
header {
    background: rgba(26, 29, 39, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}
.header-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--accent), var(--accent2));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}
nav a {
    color: var(--muted);
    margin-left: 1.75rem;
    font-size: 0.95rem;
    transition: color 0.2s ease;
}
nav a:hover { color: var(--text); }

/* Hero */
.hero {
    text-align: center;
    padding: 5rem 2rem 3rem;
    max-width: 800px;
    margin: 0 auto;
}
.hero h1 {
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}
.hero p {
    font-size: 1.15rem;
    color: var(--muted);
    max-width: 560px;
    margin: 0 auto;
}

/* Converter card */
.converter-card {
    max-width: 720px;
    margin: 0 auto 4rem;
    padding: 0 1rem;
}
.converter-inner {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    box-shadow: var(--shadow);
}
.converter-inner h2 {
    font-size: 1.3rem;
    margin-bottom: 1.25rem;
    font-weight: 700;
}
.form-row {
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}
.form-row.dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
label {
    color: var(--muted);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}
select, input[type="number"] {
    width: 100%;
    padding: 0.75rem 0.9rem;
    background: var(--card-2);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--text);
    font-size: 1rem;
    outline: none;
    transition: border-color 0.2s;
}
select:focus, input[type="number"]:focus {
    border-color: var(--accent);
}
.input-group {
    display: grid;
    grid-template-columns: 1fr 140px;
    gap: 0.5rem;
}
.result {
    margin-top: 1.25rem;
    padding: 0.9rem 1rem;
    background: rgba(74, 222, 128, 0.08);
    border: 1px solid rgba(74, 222, 128, 0.25);
    color: var(--success);
    border-radius: 10px;
    font-family: 'SF Mono', Menlo, Consolas, monospace;
    font-size: 0.95rem;
    min-height: 3rem;
}

/* Features */
.features {
    max-width: 1100px;
    margin: 0 auto 5rem;
    padding: 0 1rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}
.feature-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: transform 0.2s, border-color 0.2s;
}
.feature-card:hover {
    transform: translateY(-2px);
    border-color: var(--accent);
}
.feature-card h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}
.feature-card p {
    color: var(--muted);
    font-size: 0.95rem;
}

/* About */
.about {
    max-width: 720px;
    margin: 0 auto 5rem;
    padding: 0 1rem;
}
.about h2 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}
.about p {
    color: var(--muted);
    margin-bottom: 0.75rem;
}
.about .muted {
    font-size: 0.85rem;
    color: var(--muted);
}

/* Footer */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem;
    background: rgba(15, 17, 23, 0.6);
}
.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    color: var(--muted);
    font-size: 0.9rem;
}
.footer-inner nav a {
    margin-left: 1.25rem;
}

@media (max-width: 640px) {
    header { padding: 0.75rem 1rem; }
    nav a { margin-left: 1rem; font-size: 0.9rem; }
    .hero { padding: 3rem 1rem 2rem; }
    .converter-inner { padding: 1.25rem; }
    .form-row.dual { grid-template-columns: 1fr; }
    .input-group { grid-template-columns: 1fr; }
    .footer-inner { flex-direction: column; text-align: center; }
    .footer-inner nav a { margin: 0 0.6rem; }
}