:root {
    --bg: #f5efe4;
    --panel: rgba(255, 252, 246, 0.94);
    --ink: #1f1a17;
    --muted: #62554b;
    --accent: #a64b2a;
    --accent-dark: #7e3418;
    --line: rgba(31, 26, 23, 0.12);
    --ok: #275d38;
    --danger: #8e2b2b;
    --shadow: 0 18px 50px rgba(40, 23, 10, 0.12);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: Georgia, "Times New Roman", serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(166, 75, 42, 0.18), transparent 30%),
        radial-gradient(circle at bottom right, rgba(39, 93, 56, 0.16), transparent 26%),
        linear-gradient(180deg, #f7f1e7 0%, #efe3d2 100%);
}

a {
    color: inherit;
}

.shell {
    width: min(1080px, calc(100% - 2rem));
    margin: 0 auto;
    padding: 2rem 0 3rem;
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.brand {
    font-size: 1.25rem;
    font-weight: 700;
    text-decoration: none;
    letter-spacing: 0.04em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.hero,
.card {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.hero {
    display: grid;
    grid-template-columns: 1.3fr 0.9fr;
    gap: 2rem;
    padding: 2rem;
}

.hero h1,
.card h1 {
    margin-top: 0;
    font-size: clamp(2.2rem, 5vw, 4.2rem);
    line-height: 0.95;
}

.hero p,
.card p,
label,
input,
button {
    font-size: 1rem;
}

.panel-list {
    margin: 1.5rem 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 0.9rem;
}

.panel-list li {
    border-left: 3px solid var(--accent);
    padding-left: 0.85rem;
    color: var(--muted);
}

.card {
    padding: 1.5rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.form-card {
    width: min(620px, 100%);
    margin: 0 auto;
}

form {
    display: grid;
    gap: 1rem;
}

label {
    display: grid;
    gap: 0.4rem;
    color: var(--muted);
}

input {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 14px;
    padding: 0.9rem 1rem;
    background: white;
}

input:focus {
    outline: 2px solid rgba(166, 75, 42, 0.25);
    border-color: var(--accent);
}

.btn,
button {
    border: 0;
    border-radius: 999px;
    padding: 0.9rem 1.2rem;
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    background: var(--accent);
    color: #fff7f1;
    font-weight: 700;
}

.btn:hover,
button:hover {
    background: var(--accent-dark);
}

.btn-secondary {
    background: transparent;
    color: var(--ink);
    border: 1px solid var(--line);
}

.flash,
.errors {
    border-radius: 16px;
    padding: 1rem 1.1rem;
    margin-bottom: 1rem;
}

.flash {
    background: rgba(39, 93, 56, 0.1);
    border: 1px solid rgba(39, 93, 56, 0.2);
    color: var(--ok);
}

.errors {
    background: rgba(142, 43, 43, 0.08);
    border: 1px solid rgba(142, 43, 43, 0.18);
    color: var(--danger);
}

.muted {
    color: var(--muted);
}

.inline {
    display: inline;
}

@media (max-width: 720px) {
    .hero,
    .grid {
        grid-template-columns: 1fr;
    }

    .nav {
        flex-direction: column;
        align-items: flex-start;
    }
}