:root {
    --primary: #89bfa3;
    --primary-dark: #5c9b7c;
    --accent: #2f6b5271;
    --bg: #f4f7f5;
    --surface: #ffffff;
    --surface-2: #eef3f0;
    --text: #1f2a25;
    --muted: #6b7a72;
    --border: #dbe3de;
    --danger: #c0392b;
    --ok: #2e7d5b;
    --radius: 10px;
    --shadow: 0 1px 3px rgba(0, 0, 0, .08), 0 6px 20px rgba(0, 0, 0, .05);
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    font-size: 15px;
}

a { color: var(--primary-dark); }

h1 { font-size: 1.5rem; margin: 0; }
h3 { margin: 0 0 .35rem; }

.muted { color: var(--muted); }
.invisible { display: none !important; }

/* Layout */
.layout { display: flex; min-height: 100vh; }

.sidebar {
    width: 250px;
    background: var(--surface);
    border-right: 1px solid var(--border);
    padding: 1rem;
    display: flex;
    flex-direction: column;
    gap: .25rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: .6rem;
    padding: .5rem .25rem 1rem;
}
.brand small { display: block; color: var(--muted); font-size: .75rem; }
.brand-center { justify-content: center; }

.brand-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px; height: 38px;
    border-radius: 10px;
    background: var(--primary);
    color: #fff;
    font-weight: 800;
}

.nav-btn {
    display: block;
    padding: .55rem .7rem;
    border-radius: 8px;
    text-decoration: none;
    color: var(--text);
    font-weight: 500;
}
.nav-btn:hover { background: var(--surface-2); }
.nav-btn.active { background: var(--primary); color: #fff; }

.sidebar-foot { margin-top: auto; display: flex; flex-direction: column; gap: .25rem; padding-top: 1rem; }
.sidebar-foot small { color: var(--muted); padding: .25rem .7rem; }

.content { flex: 1; padding: 1.5rem 2rem 3rem; max-width: 1200px; }

.content-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}

/* Cards */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}
.tile {
    display: block;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.1rem;
    text-decoration: none;
    color: var(--text);
    box-shadow: var(--shadow);
    transition: transform .12s ease, border-color .12s ease;
}
.tile:hover { transform: translateY(-2px); border-color: var(--primary); }
.tile p { margin: 0; color: var(--muted); font-size: .9rem; }

/* Forms */
label { display: block; margin: .6rem 0; font-weight: 600; font-size: .9rem; }
input, select {
    display: block;
    width: 100%;
    margin-top: .3rem;
    padding: .55rem .65rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-size: .95rem;
    background: #fff;
    font-weight: 400;
}
input:focus, select:focus { outline: 2px solid var(--primary); border-color: var(--primary); }

.form-narrow { max-width: 420px; }
.form-inline { display: flex; align-items: flex-end; gap: 1rem; flex-wrap: wrap; }
.form-inline label { margin: 0; min-width: 200px; }

.btn {
    display: inline-block;
    padding: .55rem .9rem;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: #fff;
    color: var(--text);
    cursor: pointer;
    font-weight: 600;
    font-size: .9rem;
}
.btn:hover { background: var(--surface-2); }
.btn-primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-danger { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: #fdecea; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-sm { padding: .3rem .55rem; font-size: .8rem; }

/* Tables */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-top: 1rem;
}
.data-table th, .data-table td {
    text-align: left;
    padding: .6rem .7rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
.data-table th { background: var(--surface-2); font-size: .8rem; text-transform: uppercase; letter-spacing: .03em; color: var(--muted); }
.data-table tr:last-child td { border-bottom: none; }
.data-table input[type="text"], .data-table select { margin: 0; }

.pill { display: inline-block; padding: .1rem .5rem; border-radius: 999px; font-size: .75rem; font-weight: 700; }
.pill-on { background: #e3f4ec; color: var(--ok); }
.pill-off { background: #f1f1f1; color: var(--muted); }
.pill-warn { background: #fdecea; color: var(--danger); }

.copy-row { display: flex; gap: .4rem; }
.copy-row input { margin: 0; }

.status-message { font-size: .9rem; margin-top: .5rem; color: var(--muted); min-height: 1.1em; }
.status-message.success { color: var(--ok); }
.status-message.fail { color: var(--danger); }

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(140deg, #eaf3ee, #f4f7f5 60%);
}
.login-card {
    background: var(--surface);
    padding: 2rem;
    border-radius: 14px;
    box-shadow: var(--shadow);
    width: min(380px, 92vw);
}
.login-card h1 { font-size: 1.2rem; }

/* Toasts */
.toast-container { position: fixed; right: 1rem; bottom: 1rem; display: flex; flex-direction: column; gap: .5rem; z-index: 2000; }
.toast {
    background: #22312b;
    color: #fff;
    padding: .6rem .9rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    font-size: .9rem;
    animation: toastIn .18s ease;
}
.toast.success { background: var(--ok); }
.toast.fail { background: var(--danger); }
@keyframes toastIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.5); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; vertical-align: -2px; }
@keyframes spin { to { transform: rotate(360deg); } }

@media (max-width: 780px) {
    .layout { flex-direction: column; }
    .sidebar { width: 100%; border-right: none; border-bottom: 1px solid var(--border); }
    .content { padding: 1rem; }
}