:root {
    --ink: #161410;
    --muted: #6b645b;
    --paper: #f3eee6;
    --sheet: #fffdf8;
    --line: #e4dcd0;
    --accent: #b4532a;
    --accent-dark: #8f3f1e;
    --ok: #2f6b3a;
    --err: #9b2c2c;
    --shadow: 0 18px 50px rgba(22, 20, 16, 0.08);
}

* { box-sizing: border-box; }

html, body {
    margin: 0;
    min-height: 100%;
}

body {
    font-family: "Segoe UI", "Trebuchet MS", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(1200px 500px at 10% -10%, #fff8ee, transparent 50%),
        radial-gradient(900px 400px at 100% 0%, #efe4d4, transparent 45%),
        var(--paper);
    line-height: 1.5;
}

.page-public {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 16px;
}

.sheet,
.card,
.admin {
    width: min(920px, 100%);
}

.sheet,
.card {
    background: var(--sheet);
    border: 1px solid var(--line);
    border-radius: 28px;
    box-shadow: var(--shadow);
}

.sheet {
    padding: 48px 40px;
    text-align: center;
}

.admin {
    margin: 0 auto;
    padding: 40px 16px 64px;
}

.admin-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}

.kicker {
    margin: 0 0 8px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    font-size: 11px;
    color: var(--accent);
    font-weight: 700;
}

h1, h2 {
    margin: 0 0 10px;
    letter-spacing: -0.03em;
}

h1 { font-size: clamp(28px, 5vw, 42px); }
h2 { font-size: 20px; }

.lead, .muted {
    color: var(--muted);
    margin: 0 0 22px;
}

.tiny {
    font-size: 12px;
    color: var(--muted);
}

code {
    font-family: Consolas, "Courier New", monospace;
    background: #efe8dc;
    padding: 1px 6px;
    border-radius: 6px;
    word-break: break-all;
}

.file-card {
    display: flex;
    align-items: center;
    gap: 14px;
    text-align: left;
    background: #f7f1e8;
    border: 1px dashed #d8cec0;
    border-radius: 16px;
    padding: 14px 16px;
    margin: 0 auto 24px;
    width: min(420px, 100%);
}

.file-card.compact {
    margin: 0 0 18px;
    width: 100%;
}

.file-card span {
    display: block;
    color: var(--muted);
    font-size: 13px;
}

.file-icon {
    width: 42px;
    height: 42px;
    border-radius: 12px;
    background: var(--ink);
    color: #fff;
    display: grid;
    place-items: center;
    font-size: 20px;
    flex: 0 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid transparent;
    text-decoration: none;
    font: inherit;
    font-weight: 650;
    cursor: pointer;
}

.btn-primary {
    background: var(--accent);
    color: #fff;
}

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

.btn-ghost {
    background: transparent;
    border-color: var(--line);
    color: var(--ink);
}

.hint {
    margin: 22px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.card {
    padding: 24px;
    margin-bottom: 18px;
}

.grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 650;
    margin-bottom: 14px;
}

input[type="text"],
input[type="url"],
input[type="password"] {
    display: block;
    width: 100%;
    margin-top: 6px;
    min-height: 44px;
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 0 12px;
    font: inherit;
    background: #fff;
}

.file-input {
    display: block;
    padding: 14px;
    border: 1px dashed #d8cec0;
    border-radius: 14px;
    background: #f7f1e8;
    margin-bottom: 16px;
}

.qr-card {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 24px;
    align-items: center;
}

.qr-wrap {
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 24px;
    padding: 18px;
    display: grid;
    place-items: center;
}

.qr-wrap img,
.qr-wrap canvas {
    display: block;
}

.url-line {
    margin: 0 0 16px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.alert {
    padding: 12px 14px;
    border-radius: 12px;
    margin-bottom: 16px;
    font-weight: 600;
}

.alert-ok { background: #e7f4ea; color: var(--ok); }
.alert-error { background: #fdecec; color: var(--err); }

.steps ol {
    margin: 0;
    padding-left: 18px;
    color: var(--muted);
}

.steps li { margin: 8px 0; }

.page-qr {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 32px 16px;
}

.qr-page .qr-print {
    width: min(360px, 100%);
    margin: 8px auto 20px;
    padding: 18px;
    background: #fff;
    border: 1px solid var(--line);
    border-radius: 24px;
}

.qr-page .qr-print svg {
    display: block;
    width: 100%;
    height: auto;
}

@media print {
    body {
        background: #fff;
    }
    .actions, .hint, .kicker {
        display: none !important;
    }
    .sheet {
        box-shadow: none;
        border: 0;
    }
}

@media (max-width: 820px) {
    .grid,
    .qr-card { grid-template-columns: 1fr; }
    .sheet { padding: 36px 22px; }
}