/* base */
*, *::before, *::after { 
    box-sizing: border-box; 
    margin: 0;
    padding: 0; 
}
:root {
    --bg: hsl(220 10% 8%);
    --fg: hsl(220 5% 78%);
    --fg-dim: hsl(220 5% 40%);
    --card: hsl(220 8% 11%);
    --border: hsl(220 6% 15%);
    --primary: hsl(215 25% 45%);
    --primary-fade: hsl(251, 25%, 45%);
    --primary-fg: hsl(220 5% 90%);
    --secondary: hsl(220 8% 14%);
    --surface-glass: hsl(220 8% 10%);
    --dot: hsl(220 6% 14%);
    --radius: 0.375rem;
    --glass-bg: hsla(220 8% 13% / 0.68);
    --glass-border: hsla(220 6% 28% / 0.32);
    --error: rgb(165, 67, 83);
}
html {
    height: 100%;
    scroll-behavior: smooth;
}
body {
    background: var(--bg);
    background-image: radial-gradient(var(--dot) 1px, transparent 1px);
    background-size: 24px 24px;
    background-position: center;
    color: var(--fg);
    font-family: "Inter", system-ui, sans-serif;
    -webkit-font-smoothing: antialiased;
    line-height: 1.5;
    display: flex;
    min-height: 100vh;
    flex-direction: column;
}
.mono {
    font-family: "JetBrains Mono", monospace;
}
.no-select {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    cursor: default;
}
a {
    color: inherit;
    text-decoration: none;
}

/* form group */
.form-group {
    margin-bottom: 1.25rem;
    text-align: left;
}
.form-group label {
    display: block;
    font-size: 10px;
    color: var(--fg-dim);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.form-group input {
    width: 100%;
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--fg);
    padding: 0.875rem 1rem;
    border-radius: var(--radius);
    font-size: 14px;
    font-family: "Inter", system-ui, sans-serif;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px hsla(215 25% 45% / 0.2);
}
.form-group input:disabled { 
    opacity: 0.6;
    cursor: not-allowed; 
}

/* nav */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    background: hsla(220, 8%, 10%, 0.7);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}
nav .inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
nav .logo {
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--fg);
    cursor: pointer;
    transition: color 0.15s;
}
nav .logo:hover {
    color: var(--primary);
}
.nav-links {
    display: flex;
    gap: 1.5rem;
    font-size: 12px;
    color: var(--fg-dim);
}
.nav-links a:hover {
    color: var(--fg);
    transition: color 0.15s;
}

/* footer */
footer {
    border-top: 1px solid var(--border);
    padding: 2rem 0;
}
footer .inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    font-size: 11px;
    color: var(--fg-dim);
}