:root {
    color-scheme: light;
    --bg: #f6f1e8;
    --panel: #fffdfa;
    --panel-soft: #fff7ed;
    --text: #1f2a36;
    --muted: #6b7280;
    --line: #ead9c3;
    --brand: #b45309;
    --brand-dark: #7c2d12;
    --success: #166534;
    --danger: #b91c1c;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(180, 83, 9, 0.16), transparent 30%),
        radial-gradient(circle at bottom right, rgba(124, 45, 18, 0.14), transparent 24%),
        linear-gradient(180deg, #fff8ef 0%, var(--bg) 100%);
}

.shell {
    width: min(100%, 1080px);
    margin: 0 auto;
    padding: 24px 18px 56px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 26px;
}

.brand {
    color: var(--brand-dark);
    font-weight: 800;
    letter-spacing: 0.03em;
    text-decoration: none;
}

.nav {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.nav a,
.nav button {
    border: 1px solid var(--line);
    background: rgba(255, 255, 255, 0.8);
    color: var(--text);
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 999px;
    font: inherit;
    cursor: pointer;
}

.nav-inline-form {
    margin: 0;
}

.layout {
    display: grid;
    gap: 22px;
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: start;
}

.hero,
.panel {
    background: rgba(255, 253, 250, 0.92);
    border: 1px solid var(--line);
    border-radius: 28px;
    box-shadow: 0 24px 60px rgba(31, 42, 54, 0.08);
    backdrop-filter: blur(8px);
}

.hero {
    padding: 28px;
}

.hero-tag {
    display: inline-flex;
    padding: 8px 12px;
    border-radius: 999px;
    background: rgba(180, 83, 9, 0.1);
    color: var(--brand-dark);
    font-weight: 700;
    margin-bottom: 18px;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin: 0 0 12px;
    line-height: 1.05;
}

.hero p {
    margin: 0;
    color: var(--muted);
    line-height: 1.65;
}

.hero-list {
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    gap: 12px;
}

.hero-list li {
    padding: 14px 16px;
    border-radius: 18px;
    background: var(--panel-soft);
    border: 1px solid rgba(180, 83, 9, 0.12);
}

.panel {
    padding: 24px;
}

h2 {
    margin: 0 0 18px;
    font-size: 1.35rem;
}

.stack {
    display: grid;
    gap: 16px;
}

label {
    display: grid;
    gap: 8px;
    font-weight: 600;
}

input,
select {
    width: 100%;
    padding: 13px 14px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--text);
    font: inherit;
}

input:focus,
select:focus {
    outline: 2px solid rgba(180, 83, 9, 0.18);
    border-color: var(--brand);
}

.inline {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.inline input[type="checkbox"] {
    width: auto;
}

.actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
    margin-top: 4px;
}

.actions-start {
    margin-top: 18px;
    justify-content: flex-start;
}

.btn-primary,
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 14px;
    border: 0;
    cursor: pointer;
    font: inherit;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #fff;
    font-weight: 700;
}

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

.meta,
.hint {
    color: var(--muted);
    font-size: 0.96rem;
    line-height: 1.6;
}

.alert {
    padding: 14px 16px;
    border-radius: 16px;
    margin-bottom: 16px;
    line-height: 1.55;
}

.alert-success {
    color: var(--success);
    border: 1px solid rgba(22, 101, 52, 0.18);
    background: rgba(240, 253, 244, 0.92);
}

.alert-error {
    color: var(--danger);
    border: 1px solid rgba(185, 28, 28, 0.18);
    background: rgba(254, 242, 242, 0.95);
}

.error-text {
    color: var(--danger);
    font-size: 0.92rem;
    font-weight: 500;
}

.grid-2 {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.readonly {
    padding: 13px 14px;
    border-radius: 14px;
    border: 1px solid var(--line);
    background: #f7f2eb;
    color: var(--muted);
}

@media (max-width: 860px) {
    .layout {
        grid-template-columns: 1fr;
    }

    .grid-2 {
        grid-template-columns: 1fr;
    }

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