:root {
    --accent: #a47764;
    --accent-dark: #835b4a;
    --bg: #fdfcfb;
    --bg-soft: #f6efe9;
    --card: rgba(255, 255, 255, 0.96);
    --text: #2e2623;
    --muted: #756860;
    --border: #eadfd9;
    --border-strong: #dcc7bc;
    --success: #4f5d31;
    --success-bg: #f3f6eb;
    --danger: #8d4326;
    --danger-bg: #fdf1eb;
    --cooldown: #7a5e2f;
    --cooldown-bg: #fbf4e5;
    --shadow: 0 24px 70px rgba(104, 74, 57, 0.08);
    --shadow-strong: 0 28px 80px rgba(104, 74, 57, 0.14);
    --radius-xl: 30px;
    --radius-lg: 22px;
    --radius-md: 18px;
    --transition: 0.28s ease;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }

body {
    font-family: "Montserrat", sans-serif;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(164, 119, 100, 0.12), transparent 24%),
        radial-gradient(circle at 85% 15%, rgba(234, 223, 217, 0.8), transparent 20%),
        linear-gradient(180deg, #fffaf7 0%, #f8f1ec 34%, #fdfcfb 100%);
}

button, input, textarea, select { font: inherit; }
a { color: inherit; text-decoration: none; }

.auth-shell { min-height: 100vh; display: grid; place-items: center; padding: 32px 18px; }

.auth-card, .panel-card, .tool-card, .chat-dialog, .hero, .side-panel, .alert, .admin-nav-card, .management-card, .tool-library-card, .empty-state {
    background: var(--card);
    border: 1px solid rgba(234, 223, 217, 0.95);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.auth-card { width: min(520px, 100%); padding: 34px; border-radius: 34px; }

.brand-chip, .status-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 0.82rem;
    font-weight: 700;
}

.brand-chip { background: var(--bg-soft); color: var(--accent-dark); }
.status-badge { border: 1px solid var(--border); background: #fff; color: var(--muted); text-transform: capitalize; }
.status-active { background: var(--success-bg); color: var(--success); border-color: rgba(79,93,49,.16); }
.status-blocked { background: var(--danger-bg); color: var(--danger); border-color: rgba(141,67,38,.14); }
.status-cooldown { background: var(--cooldown-bg); color: var(--cooldown); border-color: rgba(122,94,47,.14); }

.auth-card h1, .hero h1 {
    margin: 18px 0 12px;
    font-size: clamp(2rem, 5vw, 3rem);
    line-height: 1.03;
    letter-spacing: -0.03em;
}

.auth-card p, .hero p, .muted, .section-head p, .chat-tool-meta p, .admin-nav-card p, .management-card p, .tool-library-copy small, .tool-library-copy p, .empty-state p, .info-strip span {
    color: var(--muted);
    line-height: 1.6;
    margin: 0;
}

.auth-form, .stack-form, .stack-list { display: grid; gap: 16px; }
.auth-form label, .stack-form label, .field-group { display: grid; gap: 8px; }
label > span, .field-group > span { font-size: .92rem; font-weight: 600; color: var(--text); }

input, textarea, select {
    width: 100%;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    border-radius: 16px;
    padding: 14px 16px;
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition), transform var(--transition);
}

input:focus, textarea:focus, select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(164, 119, 100, 0.12);
}

textarea { resize: vertical; min-height: 120px; }

.btn-primary, .btn-secondary, .btn-danger, .btn-link, .icon-btn, .tool-card {
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition), border-color var(--transition);
}

.btn-primary, .btn-secondary, .btn-danger, .btn-link, .icon-btn { cursor: pointer; }
.btn-primary {
    border: 0;
    background: linear-gradient(135deg, var(--accent), var(--accent-dark));
    color: #fff;
    font-weight: 700;
    border-radius: 18px;
    padding: 14px 18px;
    box-shadow: 0 14px 28px rgba(131, 91, 74, 0.22);
}

.btn-secondary, .btn-danger, .btn-link { border-radius: 14px; padding: 12px 16px; }
.btn-secondary, .btn-link { border: 1px solid var(--border); background: #fff; color: var(--text); display: inline-flex; align-items: center; justify-content: center; }
.btn-danger { border: 1px solid rgba(141,67,38,.16); background: var(--danger-bg); color: var(--danger); font-weight: 600; }

.btn-primary:hover, .btn-secondary:hover, .btn-danger:hover, .btn-link:hover, .icon-btn:hover, .tool-card:hover, .admin-nav-card:hover, .tool-library-card:hover { transform: translateY(-2px); }

.page-shell { display: grid; grid-template-columns: 300px 1fr; gap: 24px; padding: 24px; }
.side-panel {
    border-radius: var(--radius-xl);
    padding: 22px;
    position: sticky;
    top: 24px;
    height: calc(100vh - 48px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 20px;
}

.side-panel-top, .profile-block, .side-nav, .side-summary { display: grid; gap: 14px; }
.profile-block h2 { margin: 0; font-size: 1.55rem; }
.side-nav a { display: flex; align-items: center; gap: 12px; border-radius: 18px; padding: 14px 16px; color: var(--muted); font-weight: 700; }
.side-nav a.active, .side-nav a:hover { background: var(--bg-soft); color: var(--accent-dark); }
.side-summary { grid-template-columns: repeat(3, minmax(0,1fr)); }
.mini-stat { border: 1px solid var(--border); border-radius: 18px; background: rgba(255,255,255,.9); padding: 14px 12px; text-align: center; }
.mini-stat span { display: block; color: var(--muted); font-size: .78rem; margin-bottom: 4px; }
.mini-stat strong { font-size: 1.1rem; }

.content-area { display: grid; gap: 22px; align-content: start; }
.hero {
    border-radius: 34px;
    padding: 34px;
    overflow: hidden;
    position: relative;
    min-height: 220px;
    display: flex;
    align-items: flex-end;
}

.hero::before, .hero::after {
    content: "";
    position: absolute;
    border-radius: 999px;
    pointer-events: none;
}

.hero::before { width: 320px; height: 320px; right: -120px; top: -120px; background: radial-gradient(circle, rgba(164,119,100,.28), transparent 68%); }
.hero::after { width: 240px; height: 240px; right: 8%; bottom: -100px; background: radial-gradient(circle, rgba(246,239,233,.9), transparent 68%); }
.admin-hero { min-height: 240px; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .78rem; font-weight: 800; color: var(--accent-dark); }

.admin-nav-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 18px; }
.admin-nav-card {
    border-radius: 24px;
    padding: 22px;
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 16px;
    align-items: center;
}
.admin-nav-card.active { border-color: var(--border-strong); box-shadow: var(--shadow-strong); background: linear-gradient(180deg, rgba(255,255,255,.98), rgba(252,247,244,.96)); }
.admin-nav-card strong { display: block; margin-bottom: 6px; font-size: 1rem; }
.admin-nav-icon, .tool-library-icon {
    width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center;
    background: var(--bg-soft); color: var(--accent-dark); font-size: 1.2rem;
}
.admin-nav-count {
    min-width: 42px; height: 42px; border-radius: 999px; background: #fff; border: 1px solid var(--border);
    display: grid; place-items: center; font-weight: 800; color: var(--accent-dark);
}

.admin-layout { display: grid; gap: 18px; }
.admin-layout-two { grid-template-columns: minmax(360px,.95fr) minmax(420px,1.05fr); }
.admin-layout-users { grid-template-columns: minmax(520px,1.1fr) minmax(360px,.9fr); }
.panel-card { border-radius: var(--radius-xl); padding: 26px; display: grid; gap: 20px; align-content: start; }
.section-head { display: grid; gap: 6px; }
.section-head.compact { gap: 3px; }
.section-head h3, .management-card h4 { margin: 0; font-size: 1.1rem; }

.inline-fields, .meta-grid, .card-actions, .head-badges { display: grid; gap: 14px; }
.inline-fields-double { grid-template-columns: repeat(2, minmax(0,1fr)); }
.inline-fields-triple, .meta-grid { grid-template-columns: repeat(3, minmax(0,1fr)); }
.meta-box { border: 1px solid var(--border); border-radius: 18px; padding: 14px 16px; background: #fff; min-height: 78px; display: grid; align-content: center; gap: 4px; }
.meta-box span { color: var(--muted); font-size: .8rem; }
.meta-box strong { font-size: .94rem; line-height: 1.4; }

.management-card, .tool-library-card { border-radius: 24px; padding: 20px; }
.management-card { display: grid; gap: 18px; }
.management-card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.card-actions { grid-template-columns: repeat(1, minmax(0,max-content)); }
.split-actions { grid-template-columns: repeat(3, minmax(0,max-content)); justify-content: space-between; align-items: center; }
.editor-actions { align-items: center; }

.info-strip { display: flex; align-items: center; gap: 10px; border-radius: 16px; padding: 14px 16px; background: var(--bg-soft); color: var(--accent-dark); }
.model-grid, .access-grid { display: grid; gap: 12px; }
.model-grid, .access-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
.model-card, .access-card {
    display: flex; align-items: flex-start; gap: 12px; border: 1px solid var(--border); border-radius: 18px;
    background: #fff; padding: 14px 16px; cursor: pointer; transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition), background var(--transition);
}

.model-card:hover, .access-card:hover { border-color: var(--border-strong); box-shadow: 0 10px 24px rgba(104,74,57,.08); }
.model-card input, .access-card input, .inline-check input { width: auto; margin-top: 4px; }
.model-card strong, .access-card span { display: block; }
.model-card small { color: var(--muted); font-size: .8rem; margin-top: 6px; word-break: break-word; }
.model-card:has(input:checked), .access-card:has(input:checked), .model-card.selected, .access-card.selected {
    border-color: rgba(164,119,100,.55); background: linear-gradient(180deg, #fff 0%, #fcf6f3 100%); box-shadow: 0 12px 28px rgba(131,91,74,.12);
}
.inline-check { display: flex; align-items: center; gap: 10px; border: 1px dashed var(--border-strong); border-radius: 16px; padding: 12px 14px; background: rgba(255,255,255,.8); }

.tool-library-card { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; }
.tool-library-icon { color: var(--accent); font-size: 1.35rem; }
.tool-library-copy { display: grid; gap: 4px; }
.tool-library-copy span { color: var(--accent-dark); font-size: .88rem; font-weight: 700; }
.tool-library-link { color: var(--accent-dark); font-weight: 700; }

.users-table-wrap { overflow: auto; border: 1px solid var(--border); border-radius: 22px; background: rgba(255,255,255,.9); }
.users-table { width: 100%; border-collapse: collapse; min-width: 760px; }
.users-table th, .users-table td { padding: 16px 18px; text-align: left; border-bottom: 1px solid var(--border); vertical-align: middle; }
.users-table th { font-size: .84rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; background: rgba(246,239,233,.75); }
.users-table td strong { display: block; margin-bottom: 4px; }
.users-table td small { color: var(--muted); }
.users-table tbody tr.is-active { background: rgba(246,239,233,.58); }
.table-action { display: inline-flex; align-items: center; justify-content: center; padding: 10px 14px; border: 1px solid var(--border); border-radius: 12px; background: #fff; font-weight: 700; color: var(--accent-dark); }
.compact-empty { box-shadow: none; border: 0; background: transparent; padding: 22px; }

.empty-state { border-radius: 24px; padding: 34px 22px; text-align: center; display: grid; gap: 10px; place-items: center; }
.empty-state i { font-size: 2rem; color: var(--accent); }

.tools-grid { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 18px; }
.tool-card {
    min-height: 240px; border: 1px solid rgba(234,223,217,.95); border-radius: var(--radius-xl); cursor: pointer;
    display: grid; align-content: center; justify-items: center; gap: 12px; text-align: center; padding: 22px;
}
.tool-card:hover { box-shadow: var(--shadow-strong); }
.tool-card i { font-size: 2.7rem; color: var(--accent); }
.tool-card strong { font-size: 1.08rem; }
.tool-card p { margin: 0; color: var(--muted); line-height: 1.55; }

.alert { border-radius: 18px; padding: 16px 18px; }
.alert-success { color: var(--success); background: var(--success-bg); }
.alert-error { color: var(--danger); background: var(--danger-bg); }

.chat-modal { position: fixed; inset: 0; display: none; z-index: 40; }
.chat-modal.open { display: block; animation: fadeIn .3s ease; }
.chat-backdrop { position: absolute; inset: 0; background: rgba(34,26,22,.36); }

.chat-dialog {
    position: relative;
    width: min(78vw, 1180px);
    height: min(86vh, 920px);
    margin: 4vh auto;
    border-radius: 34px;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr auto auto;
    overflow: hidden;
}

.chat-dialog.expanded { width: 90vw; height: 90vh; margin: 2.5vh auto; }
.chat-dialog.show-history { grid-template-columns: 310px 1fr; grid-template-rows: auto 1fr auto auto; }
.chat-dialog.show-history .chat-header { grid-column: 1 / -1; }
.chat-dialog.show-history .chat-history-panel { display: grid; }
.chat-dialog.show-history .chat-messages,
.chat-dialog.show-history .chat-inline-notice,
.chat-dialog.show-history .chat-footer { grid-column: 2; }

.chat-header, .chat-footer {
    padding: 20px 22px; display: flex; align-items: center; justify-content: space-between; gap: 16px; border-bottom: 1px solid var(--border);
}
.chat-footer { border-bottom: 0; border-top: 1px solid var(--border); align-items: flex-end; }
.chat-tool-meta { display: flex; align-items: center; gap: 14px; }
.chat-tool-meta h3 { margin: 0; }
.chat-icon { width: 56px; height: 56px; border-radius: 18px; display: grid; place-items: center; background: var(--bg-soft); color: var(--accent); font-size: 1.4rem; }
.chat-actions { display: flex; align-items: center; gap: 12px; }
.icon-btn { width: 44px; height: 44px; border: 0; border-radius: 14px; background: var(--bg-soft); color: var(--accent-dark); }

.chat-history-panel {
    display: none;
    border-right: 1px solid var(--border);
    background: rgba(252,248,245,.92);
    padding: 18px;
    gap: 14px;
    align-content: start;
}

.chat-history-head { display: grid; gap: 4px; }
.chat-history-head span { color: var(--muted); font-size: .82rem; }
.chat-history-list { display: grid; gap: 10px; max-height: 100%; overflow: auto; }
.chat-history-item {
    border: 1px solid var(--border); background: #fff; border-radius: 16px; padding: 12px 14px; text-align: left; display: grid; gap: 6px;
}
.chat-history-item strong { font-size: .9rem; }
.chat-history-item span, .chat-history-empty { color: var(--muted); font-size: .8rem; line-height: 1.5; }
.chat-history-item.active { border-color: var(--border-strong); background: var(--bg-soft); }

.chat-messages {
    padding: 22px;
    overflow: auto;
    background: linear-gradient(180deg, rgba(245,237,232,.38), transparent 42%), #fffdfa;
    display: grid;
    gap: 14px;
    align-content: start;
}

.message { max-width: min(76%,760px); padding: 16px 18px; border-radius: 22px; line-height: 1.7; box-shadow: 0 10px 24px rgba(91,70,58,.06); }
.message.user { margin-left: auto; background: #f5ede8; border-bottom-right-radius: 6px; }
.message.assistant { margin-right: auto; background: #fff; border: 1px solid rgba(164,119,100,.36); border-bottom-left-radius: 6px; }

.typing-bubble { display: inline-flex; align-items: center; gap: 8px; min-height: 26px; }
.typing-bubble span {
    width: 9px; height: 9px; border-radius: 999px; background: rgba(164,119,100,.75); animation: typingPulse 1.1s infinite ease-in-out;
}
.typing-bubble span:nth-child(2) { animation-delay: .16s; }
.typing-bubble span:nth-child(3) { animation-delay: .32s; }

.message pre { position: relative; margin: 16px 0 0; background: #241f1d; color: #f5efeb; border-radius: 18px; padding: 16px; overflow: auto; }
.copy-code {
    position: absolute; top: 10px; right: 10px; border: 0; border-radius: 10px; padding: 7px 10px; background: rgba(255,255,255,.14); color: #fff; cursor: pointer;
}

.chat-inline-notice {
    margin: 0 22px;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(246,239,233,.85);
    color: var(--accent-dark);
    text-align: center;
    font-size: .88rem;
}
.chat-inline-notice.success { background: var(--success-bg); color: var(--success); }
.chat-inline-notice.error { background: var(--danger-bg); color: var(--danger); }
.chat-inline-notice.warning { background: var(--cooldown-bg); color: var(--cooldown); }

.chat-input-wrap { flex: 1; display: grid; gap: 8px; }
.chat-disclaimer { margin: 0; text-align: center; font-size: .78rem; color: var(--muted); }
.chat-footer textarea { min-height: 54px; max-height: 180px; resize: none; }
.chat-footer .icon-send { width: 58px; height: 58px; display: grid; place-items: center; flex: 0 0 58px; }

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes typingPulse {
    0%, 80%, 100% { opacity: .35; transform: translateY(0); }
    40% { opacity: 1; transform: translateY(-4px); }
}

@media (max-width: 1360px) {
    .admin-layout-two, .admin-layout-users { grid-template-columns: 1fr; }
}

@media (max-width: 1180px) {
    .tools-grid, .admin-nav-grid { grid-template-columns: repeat(2, minmax(0,1fr)); }
    .chat-dialog { width: min(94vw, 1180px); }
}

@media (max-width: 920px) {
    .page-shell { grid-template-columns: 1fr; }
    .side-panel { position: static; height: auto; }
    .tools-grid, .model-grid, .access-grid, .inline-fields-double, .inline-fields-triple, .meta-grid, .side-summary { grid-template-columns: 1fr; }
    .chat-dialog, .chat-dialog.expanded { width: 100vw; height: 100vh; margin: 0; border-radius: 0; }
    .chat-dialog.show-history { grid-template-columns: 1fr; grid-template-rows: auto auto 1fr auto auto; }
    .chat-dialog.show-history .chat-history-panel, .chat-dialog.show-history .chat-messages, .chat-dialog.show-history .chat-inline-notice, .chat-dialog.show-history .chat-footer { grid-column: 1; }
    .chat-history-panel { border-right: 0; border-bottom: 1px solid var(--border); }
}

@media (max-width: 640px) {
    .page-shell { padding: 16px; gap: 16px; }
    .hero, .panel-card, .auth-card, .side-panel, .admin-nav-card, .management-card, .tool-library-card { padding: 22px; border-radius: 24px; }
    .tools-grid, .admin-nav-grid, .split-actions { grid-template-columns: 1fr; }
    .message { max-width: 100%; }
    .tool-library-card, .admin-nav-card { grid-template-columns: 1fr; }
    .chat-header, .chat-footer { padding: 16px; }
    .chat-actions { gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
    /* Prevent fixed-width admin layout columns from overflowing */
    .admin-layout-two, .admin-layout-users { grid-template-columns: 1fr !important; }
    /* Side nav stays readable */
    .side-nav a { padding: 11px 14px; font-size: .9rem; }
    /* Mini stats always 3-col on small but fallback to 1 */
    .side-summary { grid-template-columns: repeat(3, minmax(0,1fr)); gap: 8px; }
    /* Tool card min-height smaller on phone */
    .tool-card { min-height: 190px; }
    /* Auth card full width */
    .auth-card { padding: 26px 20px; }
    /* Hero less padding */
    .hero { min-height: 160px; padding: 22px; }
    /* Management card head wraps */
    .management-card-head { flex-wrap: wrap; }
}

@media (max-width: 400px) {
    .page-shell { padding: 10px; gap: 10px; }
    .side-summary { grid-template-columns: 1fr; }
    .hero, .panel-card, .auth-card, .side-panel { padding: 16px; border-radius: 20px; }
    .tool-card { min-height: 160px; padding: 16px; }
    .side-nav a { padding: 9px 12px; }
    .profile-block h2 { font-size: 1.25rem; }
}

.key-dot {
    display: inline-block;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #4caf50;
    margin-left: auto;
    flex-shrink: 0;
}

.auth-copyright {
    margin: 18px 0 0;
    text-align: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.03em;
    opacity: 0.7;
}

.side-copyright {
    margin: 14px 0 0;
    text-align: center;
    font-size: 0.62rem;
    font-weight: 600;
    color: var(--muted);
    letter-spacing: 0.03em;
    opacity: 0.6;
    line-height: 1.5;
}