/* Mahe — minimal CSS, no build step (matches PROJECT.md D1/D18/Sec 5: clean, minimal,
   distraction-free UI). Plain CSS, no framework. */

:root {
    --bg: #f7f7f5;
    --card-bg: #ffffff;
    --text: #2b2b2b;
    --muted: #6b6b6b;
    --accent: #2f6f4f;
    --accent-hover: #24593f;
    --border: #e0e0dc;
    --error: #b3261e;
    --error-bg: #fbeceb;
}

* { box-sizing: border-box; }

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

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: var(--card-bg);
    border-bottom: 1px solid var(--border);
}

.brand {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--accent);
}

.nav a {
    margin-left: 1rem;
    text-decoration: none;
    color: var(--text);
    font-size: 0.95rem;
}

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

.content {
    max-width: 720px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

h1, h2 {
    color: var(--text);
}

label {
    display: block;
    margin-top: 1rem;
    margin-bottom: 0.25rem;
    font-weight: 600;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    font-size: 1rem;
}

.checkbox-row {
    display: flex;
    align-items: center;
    margin-top: 1rem;
}

.checkbox-row input {
    margin-right: 0.5rem;
}

button, .button {
    display: inline-block;
    margin-top: 1.5rem;
    padding: 0.6rem 1.2rem;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
}

button:hover, .button:hover {
    background: var(--accent-hover);
}

.error {
    background: var(--error-bg);
    color: var(--error);
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-top: 1rem;
}

.success {
    background: #e8f3ec;
    color: var(--accent);
    padding: 0.75rem 1rem;
    border-radius: 4px;
    margin-top: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    text-align: left;
    padding: 0.5rem;
    border-bottom: 1px solid var(--border);
}

.muted {
    color: var(--muted);
    font-size: 0.9rem;
}

.placeholder-page {
    text-align: center;
    padding: 4rem 1rem;
    color: var(--muted);
}