:root {
    color-scheme: light;
    --ink: #16252b;
    --muted: #64757c;
    --paper: #f4f6f5;
    --surface: #ffffff;
    --brand: #f4511e;
    --brand-dark: #a22f0c;
    --mack-orange: #f4511e;
    --line: #d9e1df;
    font-family: "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--paper); color: var(--ink); }
a { color: inherit; }
.brand { min-height: 76px; padding: 14px clamp(20px, 5vw, 64px); display: flex; align-items: center; gap: 12px; color: white; background: var(--ink); }
.brand-mark { width: 42px; height: 42px; display: block; }
.brand-mark img { display: block; width: 100%; height: 100%; }
.brand strong, .brand small { display: block; }
.brand small { margin-top: 3px; color: #bdd2d0; letter-spacing: .08em; }
.nav { min-height: 48px; padding: 0 clamp(20px, 5vw, 64px); display: flex; align-items: center; gap: 22px; border-bottom: 1px solid var(--line); background: var(--surface); }
.nav a, .link-button { text-decoration: none; font: inherit; color: var(--ink); }
.nav-spacer { flex: 1; }
.nav form { margin: 0; }
.link-button { border: 0; background: none; padding: 0; cursor: pointer; }
.shell { width: min(1120px, calc(100% - 40px)); margin: 0 auto; padding: 54px 0 80px; }
.hero, .page-heading { max-width: 760px; margin-bottom: 32px; }
h1 { margin: 6px 0 14px; font-size: clamp(2rem, 5vw, 3.6rem); line-height: 1.03; letter-spacing: -.035em; }
h2 { margin: 7px 0 18px; }
p { color: var(--muted); line-height: 1.65; }
.eyebrow { margin: 0; color: var(--brand-dark); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 16px; }
.card, .panel { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: 0 9px 26px rgba(22, 37, 43, .05); }
.card { min-height: 145px; padding: 22px; display: flex; flex-direction: column; gap: 10px; text-decoration: none; }
.card strong { font-size: 1.2rem; }
.card span { color: var(--muted); }
a.card:hover { border-color: var(--brand); transform: translateY(-1px); }
.card.muted { opacity: .72; }
.project-card { min-height: 180px; }
.panel { padding: clamp(24px, 5vw, 44px); }
.panel.narrow { max-width: 520px; margin: 20px auto; }
.stack { display: grid; gap: 18px; margin-top: 28px; }
label { display: grid; gap: 7px; font-weight: 650; }
input { width: 100%; padding: 12px 13px; border: 1px solid #bdc9c6; border-radius: 7px; font: inherit; }
input:focus { outline: 3px solid rgba(244, 81, 30, .17); border-color: var(--brand); }
button[type="submit"]:not(.link-button) { padding: 12px 17px; border: 0; border-radius: 7px; color: white; background: var(--brand); font: inherit; font-weight: 700; cursor: pointer; }
.error { padding: 10px 12px; border-left: 3px solid #a63d40; background: #fff0f0; color: #7d2427; }

.auth-page {
    min-height: 100vh;
    color-scheme: dark;
    color: #f7f7f7;
    background: #080808;
}
.auth-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 40px 24px;
}
.auth-card {
    width: min(384px, 100%);
}
.auth-logo {
    width: 42px;
    height: 42px;
    display: block;
    margin: 0 auto 18px;
}
.auth-logo img {
    display: block;
    width: 100%;
    height: 100%;
}
.auth-heading {
    margin-bottom: 32px;
    text-align: center;
}
.auth-heading h1 {
    margin: 0 0 10px;
    color: var(--mack-orange);
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    letter-spacing: 0;
}
.auth-heading p,
.auth-note {
    margin: 0;
    color: #a1a1aa;
    font-size: .875rem;
    line-height: 1.5;
}
.auth-form {
    display: grid;
    gap: 24px;
}
.auth-form label {
    gap: 8px;
    color: #f4f4f5;
    font-size: .875rem;
    font-weight: 500;
}
.auth-form input:not([type="checkbox"]) {
    height: 38px;
    padding: 8px 12px;
    border: 1px solid #27272a;
    border-radius: 7px;
    color: #fafafa;
    background: transparent;
    box-shadow: 0 1px 2px rgba(0, 0, 0, .2);
}
.auth-form input:not([type="checkbox"]):focus {
    border-color: #71717a;
    outline: 3px solid rgba(244, 81, 30, .18);
}
.auth-form input::placeholder { color: #71717a; }
.auth-form .remember {
    display: flex;
    align-items: center;
    gap: 10px;
}
.auth-form .remember input {
    width: 16px;
    height: 16px;
    margin: 0;
    accent-color: var(--mack-orange);
}
.auth-form button[type="submit"] {
    height: 38px;
    margin-top: 4px;
    padding: 8px 16px;
    border: 0;
    border-radius: 7px;
    color: white;
    background: var(--mack-orange);
    font-weight: 700;
}
.auth-form button[type="submit"]:hover { background: #da4318; }
.auth-note {
    margin-top: 24px;
    text-align: center;
}
.auth-card .error {
    margin: 0 0 24px;
    border-color: var(--mack-orange);
    color: #fecaca;
    background: #2a1010;
}
@media (max-width: 620px) { .nav { gap: 13px; font-size: .9rem; } .nav span:not(.nav-spacer) { display: none; } }