:root {
    --bg: #f4f1e8;
    --panel: #fffdf8;
    --line: #ded6c6;
    --text: #1d1a16;
    --muted: #6e6559;
    --brand: #0f766e;
    --brand-dark: #115e59;
    --accent: #f59e0b;
    --danger: #b91c1c;
    --ok: #166534;
    --shadow: 0 20px 40px rgba(31, 24, 16, 0.08);
}

html {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
}

* {
    box-sizing: border-box;
    font-family: inherit;
}

body {
    margin: 0;
    font-family: inherit;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(245, 158, 11, 0.12), transparent 35%),
        linear-gradient(135deg, #efe7d2 0%, #f8f5ee 45%, #ece3d0 100%);
}

input,
select,
textarea,
button {
    font: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

.app-shell {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 260px 1fr;
    transition: grid-template-columns 0.25s ease;
}

.app-shell.sidebar-collapsed {
    grid-template-columns: 88px 1fr;
}

.sidebar {
    background: linear-gradient(180deg, #163b37 0%, #1f5d56 100%);
    color: #f7f4ed;
    padding: 16px 14px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow: hidden;
}

.sidebar-top {
    display: grid;
    gap: 4px;
}

.brand-wrap {
    display: grid;
    gap: 0;
}

.brand {
    font-size: 1.8rem;
    font-weight: 700;
    line-height: 1.1;
}

.brand-subtitle {
    margin-top: 4px;
    color: rgba(255, 255, 255, 0.72);
    font-size: 0.9rem;
}

.nav {
    display: grid;
    gap: 4px;
}

.nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
    color: rgba(255, 255, 255, 0.86);
}

.nav-icon {
    width: 20px;
    height: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.nav-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.nav-label {
    white-space: nowrap;
}

.nav a.active,
.nav a:hover {
    background: rgba(255, 255, 255, 0.14);
    color: #fff;
}

.sidebar-footer {
    padding-top: 4px;
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    display: grid;
    gap: 4px;
    margin-top: 2px;
}

.sidebar-footer a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: 12px;
}

.sidebar-footer a:hover {
    background: rgba(255, 255, 255, 0.14);
}

.sidebar-toggle {
    width: 42px;
    height: 42px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 0;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.12);
}

.sidebar-toggle svg {
    width: 22px;
    height: 22px;
    fill: #fff;
}

.sidebar-toggle-inside {
    justify-self: start;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 6px;
}

.sidebar-toggle-main {
    flex-shrink: 0;
}

.app-shell.sidebar-collapsed .brand-subtitle,
.app-shell.sidebar-collapsed .sidebar-footer div,
.app-shell.sidebar-collapsed .nav-label,
.app-shell.sidebar-collapsed .sidebar-footer .nav-label {
    display: none;
}

.app-shell.sidebar-collapsed .nav a {
    min-height: 42px;
    justify-content: center;
}

.app-shell.sidebar-collapsed .sidebar-footer a {
    justify-content: center;
}

.app-shell.sidebar-collapsed .brand {
    font-size: 0;
    min-height: 16px;
    position: relative;
}

.app-shell.sidebar-collapsed .brand::before {
    content: "FB";
    font-size: 1rem;
    font-weight: 700;
}

.content {
    padding: 28px;
}

.content-full {
    grid-column: 1 / -1;
    max-width: 540px;
    margin: 0 auto;
    width: 100%;
    padding-top: 72px;
}

.topbar h1 {
    margin: 0;
    font-size: 2rem;
}

.topbar p {
    margin: 8px 0 0;
    color: var(--muted);
}

.grid-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin: 24px 0;
}

.card,
.table-card,
.form-card,
.login-card {
    background: rgba(255, 253, 248, 0.9);
    border: 1px solid rgba(222, 214, 198, 0.9);
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.card {
    padding: 20px;
}

.stat-label {
    color: var(--muted);
    margin-bottom: 10px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
}

.page-grid {
    display: grid;
    gap: 20px;
}

.form-card,
.table-card,
.login-card {
    padding: 22px;
}

.form-card h2,
.table-card h2,
.login-card h2 {
    margin-top: 0;
}

form {
    display: grid;
    gap: 14px;
}

.form-grid {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

label {
    display: grid;
    gap: 8px;
    font-size: 0.95rem;
    color: var(--muted);
}

input,
select,
textarea,
button {
    font: inherit;
}

input,
select,
textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #fff;
    color: var(--text);
}

textarea {
    min-height: 96px;
    resize: vertical;
}

button {
    border: none;
    border-radius: 12px;
    padding: 12px 16px;
    background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    color: #fff;
    cursor: pointer;
    font-weight: 700;
}

button:hover {
    opacity: 0.94;
}

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

th,
td {
    text-align: left;
    padding: 12px 10px;
    border-bottom: 1px solid #ece4d8;
    vertical-align: top;
}

th {
    color: var(--muted);
    font-size: 0.92rem;
}

.badge {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(15, 118, 110, 0.12);
    color: var(--brand-dark);
    font-size: 0.86rem;
    font-weight: 700;
}

.alert {
    margin: 18px 0;
    padding: 14px 16px;
    border-radius: 14px;
}

.alert-success {
    background: rgba(22, 101, 52, 0.12);
    color: var(--ok);
}

.alert-error {
    background: rgba(185, 28, 28, 0.12);
    color: var(--danger);
}

.login-card {
    margin-top: 36px;
}

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

@media (max-width: 900px) {
    .app-shell {
        grid-template-columns: 1fr;
    }

    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        width: min(280px, 82vw);
        z-index: 30;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
    }

    .app-shell.sidebar-collapsed .sidebar {
        transform: translateX(0);
    }

    .app-shell.sidebar-collapsed .brand-subtitle,
    .app-shell.sidebar-collapsed .sidebar-footer div,
    .app-shell.sidebar-collapsed .nav-label,
    .app-shell.sidebar-collapsed .sidebar-footer .nav-label {
        display: block;
    }

    .app-shell.sidebar-collapsed .nav a,
    .app-shell.sidebar-collapsed .sidebar-footer a {
        justify-content: flex-start;
    }

    .app-shell.sidebar-collapsed .brand {
        font-size: 1.8rem;
        min-height: 0;
    }

    .app-shell.sidebar-collapsed .brand::before {
        content: none;
    }

    .app-shell.has-sidebar .content {
        padding: 20px;
    }

    .app-shell:not(.sidebar-collapsed) .sidebar-toggle-inside {
        display: none;
    }

    .app-shell.has-sidebar:not(.sidebar-collapsed) .sidebar-toggle-main {
        display: inline-flex;
    }

    .app-shell.has-sidebar.sidebar-collapsed .sidebar-toggle-main {
        background: linear-gradient(135deg, var(--brand) 0%, var(--brand-dark) 100%);
    }

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