:root {
    --bg: #efe4d2;
    --paper: rgba(255, 249, 239, 0.92);
    --panel: #f4ead9;
    --panel-strong: #ead8ba;
    --border: rgba(105, 73, 36, 0.18);
    --text: #241a10;
    --muted: #6b5d4d;
    --accent: #a35d2f;
    --accent-dark: #6d3917;
    --ink-soft: #3c2a1c;
    --danger: #a5432b;
    --success: #3d6d4e;
    --shadow: 0 24px 60px rgba(67, 39, 13, 0.12);
    --shadow-soft: 0 10px 30px rgba(67, 39, 13, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Palatino Linotype", "Book Antiqua", Palatino, Georgia, serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(163, 93, 47, 0.24), transparent 24%),
        radial-gradient(circle at top right, rgba(109, 57, 23, 0.08), transparent 18%),
        linear-gradient(180deg, #f8efe1 0%, #eddfc8 100%);
    min-height: 100vh;
}

a {
    color: var(--accent-dark);
    text-decoration: none;
}

a:hover {
    color: var(--accent);
}

button,
.button-primary {
    appearance: none;
    border: none;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    color: #fff;
    cursor: pointer;
    padding: 0.8rem 1.2rem;
    font: inherit;
    box-shadow: var(--shadow);
    transition: transform 160ms ease, box-shadow 160ms ease, opacity 160ms ease;
}

button:hover,
.button-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 30px rgba(67, 39, 13, 0.18);
}

.button-secondary {
    background: rgba(255, 255, 255, 0.7);
    color: var(--accent-dark);
    border: 1px solid rgba(105, 73, 36, 0.14);
    box-shadow: var(--shadow-soft);
}

.button-danger {
    background: var(--danger);
    color: #fff;
}

input,
select,
textarea {
    width: 100%;
    padding: 0.8rem 0.95rem;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.8);
    font: inherit;
    color: var(--text);
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.7);
}

.topbar {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: center;
    padding: 1.25rem 2rem;
    border-bottom: 1px solid rgba(111, 62, 23, 0.08);
    background: rgba(255, 248, 238, 0.68);
    backdrop-filter: blur(18px);
    position: sticky;
    top: 0;
    z-index: 10;
}

.topbar h1 {
    margin: 0.15rem 0 0;
    font-size: clamp(1.8rem, 3vw, 2.8rem);
    letter-spacing: -0.03em;
}

.topbar nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.topbar nav a {
    padding: 0.6rem 0.9rem;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.45);
    border: 1px solid rgba(105, 73, 36, 0.08);
}

.page-shell {
    width: min(1320px, calc(100% - 2rem));
    margin: 1.5rem auto 2.5rem;
}

.card {
    background: var(--paper);
    border: 1px solid var(--border);
    border-radius: 28px;
    padding: 1.4rem;
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

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

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.18em;
    font-size: 0.74rem;
    color: var(--accent-dark);
    font-weight: 700;
}

.flash-stack {
    display: grid;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.flash {
    padding: 0.9rem 1rem;
    border-radius: 16px;
}

.flash-success {
    background: rgba(61, 109, 78, 0.12);
}

.flash-danger {
    background: rgba(165, 67, 43, 0.12);
}

.flash-warning,
.flash-info {
    background: rgba(155, 93, 46, 0.12);
}

.chat-layout,
.admin-layout {
    display: grid;
    grid-template-columns: 340px 1fr;
    gap: 1rem;
    align-items: start;
}

.chat-sidebar {
    position: sticky;
    top: 102px;
}

.chat-sidebar h2,
.chat-hero h2,
.admin-main h2,
.form-card h2 {
    margin: 0.35rem 0 0.6rem;
    font-size: clamp(1.5rem, 2.4vw, 2.2rem);
    line-height: 1.05;
    letter-spacing: -0.03em;
}

.intro-copy {
    margin-bottom: 1.2rem;
}

.chat-history {
    min-height: 420px;
    max-height: 65vh;
    overflow-y: auto;
    display: grid;
    gap: 1rem;
    padding: 0.35rem;
    margin-top: 1rem;
}

.message {
    max-width: min(88%, 760px);
    padding: 1rem 1.05rem;
    border-radius: 24px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-soft);
}

.message.user {
    justify-self: end;
    background: linear-gradient(180deg, #fff 0%, #f8efe3 100%);
}

.message.assistant {
    background:
        linear-gradient(180deg, rgba(244, 234, 217, 0.95) 0%, rgba(255, 248, 238, 0.92) 100%);
}

.message-role {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 0.4rem;
}

.message-body {
    white-space: pre-wrap;
    line-height: 1.6;
}

.message-tools {
    margin-top: 0.8rem;
    display: flex;
    justify-content: flex-end;
}

.chat-form {
    margin-top: 1rem;
    display: grid;
    gap: 0.75rem;
}

.chat-panel {
    min-height: 76vh;
    position: relative;
    overflow: hidden;
}

.chat-panel::before {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background:
        radial-gradient(circle at 85% 8%, rgba(163, 93, 47, 0.11), transparent 18%),
        radial-gradient(circle at 12% 100%, rgba(109, 57, 23, 0.08), transparent 24%);
}

.chat-panel > * {
    position: relative;
    z-index: 1;
}

.chat-hero {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.4rem 0 1rem;
    border-bottom: 1px solid rgba(105, 73, 36, 0.1);
}

.hero-badge {
    border-radius: 999px;
    padding: 0.75rem 0.95rem;
    background: linear-gradient(135deg, #f1dcc0 0%, #ead0ad 100%);
    border: 1px solid rgba(105, 73, 36, 0.14);
    white-space: nowrap;
    color: var(--ink-soft);
    font-weight: 700;
}

.chat-actions,
.section-heading,
.actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
    justify-content: space-between;
}

.field-group {
    margin-bottom: 1rem;
}

.section-divider {
    border: 0;
    border-top: 1px solid rgba(105, 73, 36, 0.12);
    margin: 1.4rem 0 1.2rem;
}

.field-group label {
    display: block;
    margin-bottom: 0.35rem;
    font-weight: 600;
}

.meta-block + .meta-block {
    margin-top: 1rem;
}

.meta-block {
    padding-top: 0.9rem;
    border-top: 1px solid rgba(105, 73, 36, 0.08);
}

.voice-stack {
    display: grid;
    gap: 0.75rem;
}

.toggle-row {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    font-weight: 600;
}

.toggle-row input {
    width: auto;
    margin: 0;
}

.plain-list {
    margin: 0;
    padding-left: 1.1rem;
    line-height: 1.6;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 1rem;
}

.stat-card h2 {
    margin: 0;
    font-size: 2rem;
}

.admin-main {
    display: grid;
    gap: 1rem;
}

.admin-sidebar {
    position: sticky;
    top: 102px;
}

.sidebar-nav {
    display: grid;
    gap: 0.75rem;
}

.sidebar-nav a {
    padding: 0.8rem 0.95rem;
    border-radius: 18px;
    background: rgba(255, 255, 255, 0.45);
    border: 1px solid rgba(105, 73, 36, 0.08);
}

.data-table {
    width: 100%;
    border-collapse: collapse;
}

.data-table th,
.data-table td {
    text-align: left;
    padding: 0.85rem 0.5rem;
    border-bottom: 1px solid rgba(214, 199, 170, 0.7);
    vertical-align: top;
}

.actions form {
    display: inline-flex;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background: rgba(155, 93, 46, 0.12);
}

.badge-success {
    background: rgba(61, 109, 78, 0.15);
}

.auth-shell {
    display: grid;
    place-items: center;
    min-height: 60vh;
}

.auth-card {
    width: min(460px, 100%);
}

.log-list {
    display: grid;
    gap: 0.75rem;
}

.log-list pre {
    margin: 0;
    overflow-x: auto;
    padding: 1rem;
    border-radius: 18px;
    background: #fbf7f0;
    border: 1px solid rgba(214, 199, 170, 0.6);
}

@media (max-width: 900px) {
    .chat-layout,
    .admin-layout,
    .stats-grid {
        grid-template-columns: 1fr;
    }

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

    .message {
        max-width: 100%;
    }

    .chat-sidebar,
    .admin-sidebar {
        position: static;
    }

    .chat-hero {
        flex-direction: column;
    }
}