:root {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-muted: #a0aec0;
    --border-light: #e8eaed;
    --border-medium: #e2e8f0;
    --accent: #c9895a;
    --accent-hover: #b5764a;
    --success-bg: #f0f9f0;
    --success-border: #bfe3bf;
    --success-text: #2f7a2f;
    --error-bg: #fef2f2;
    --error-border: #fecaca;
    --error-text: #c53030;
    --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 4px 10px rgba(0, 0, 0, 0.08);
    --label-default: #a8c5e3;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-primary: #1a202c;
        --bg-secondary: #232b3a;
        --text-primary: #e2e8f0;
        --text-secondary: #b0bdcc;
        --text-muted: #718096;
        --border-light: #37414f;
        --border-medium: #37414f;
        --accent: #d99b6c;
        --accent-hover: #e8ac7f;
        --success-bg: #1e2e1e;
        --success-border: #315a31;
        --success-text: #8fd48f;
        --error-bg: #3d2323;
        --error-border: #7a4141;
        --error-text: #f5a3a3;
        --shadow-md: 0 1px 3px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 4px 10px rgba(0, 0, 0, 0.4);
    }
}

:root[data-theme="dark"] {
    --bg-primary: #1a202c;
    --bg-secondary: #232b3a;
    --text-primary: #e2e8f0;
    --text-secondary: #b0bdcc;
    --text-muted: #718096;
    --border-light: #37414f;
    --border-medium: #37414f;
    --accent: #d99b6c;
    --accent-hover: #e8ac7f;
    --success-bg: #1e2e1e;
    --success-border: #315a31;
    --success-text: #8fd48f;
    --error-bg: #3d2323;
    --error-border: #7a4141;
    --error-text: #f5a3a3;
}

:root[data-theme="light"] {
    --bg-primary: #fafafa;
    --bg-secondary: #ffffff;
    --text-primary: #2c3e50;
    --text-secondary: #5a6c7d;
    --text-muted: #a0aec0;
    --border-light: #e8eaed;
    --border-medium: #e2e8f0;
    --accent: #c9895a;
    --accent-hover: #b5764a;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 16px 64px;
}

.navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-light);
    box-shadow: var(--shadow-md);
}

.navbar-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 12px 16px;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.navbar-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    flex: 1;
}

.navbar-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
}

.navbar-links a.active {
    color: var(--text-primary);
    border-bottom-color: var(--accent);
}

.navbar-user {
    font-size: 0.9rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-md);
}

.card h2, .card h3 { margin-top: 0; }

.grid {
    display: grid;
    gap: 16px;
}

.grid-2 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); }

.stat {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 10px;
    padding: 16px 20px;
}

.stat .value { font-size: 1.6rem; font-weight: 700; }
.stat .label { color: var(--text-muted); font-size: 0.85rem; }

.btn {
    display: inline-block;
    background: var(--accent);
    color: #fff;
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
}
.btn:hover { background: var(--accent-hover); text-decoration: none; }
.btn-secondary {
    background: transparent;
    border: 1px solid var(--border-medium);
    color: var(--text-primary);
}
.btn-secondary:hover { background: var(--border-light); }
.btn-danger { background: var(--error-text); }
.btn-danger:hover { background: #a52a2a; }
.btn-sm { padding: 4px 10px; font-size: 0.85rem; }

form.inline { display: inline; }

label { display: block; margin: 12px 0 4px; font-weight: 600; font-size: 0.9rem; }

input[type=text], input[type=password], input[type=date], input[type=time],
input[type=number], input[type=file], select, textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border-medium);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
}

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

.checkbox-group { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.checkbox-group label {
    font-weight: 400;
    margin: 0;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-medium);
    padding: 4px 10px;
    border-radius: 20px;
}
.checkbox-group input { width: auto; }

.flash {
    padding: 10px 14px;
    border-radius: 6px;
    margin-bottom: 16px;
    font-size: 0.9rem;
}
.flash-success { background: var(--success-bg); border: 1px solid var(--success-border); color: var(--success-text); }
.flash-error { background: var(--error-bg); border: 1px solid var(--error-border); color: var(--error-text); }

.label-chip {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.78rem;
    color: #1a202c;
    margin-right: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    text-align: left;
    padding: 8px 10px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.92rem;
}
th { color: var(--text-muted); font-weight: 600; text-transform: uppercase; font-size: 0.75rem; }

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 6px;
}
.calendar-weekday {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 600;
    padding-bottom: 4px;
}
.calendar-day {
    min-height: 90px;
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 6px;
    background: var(--bg-secondary);
    font-size: 0.8rem;
}
.calendar-day.other-month { opacity: 0.35; }
.calendar-day.today { border-color: var(--accent); border-width: 2px; }
.calendar-day .day-number { font-weight: 700; margin-bottom: 4px; display: block; }
.calendar-day .entry-dot {
    display: block;
    background: var(--label-default);
    color: #1a202c;
    border-radius: 4px;
    padding: 1px 5px;
    margin-bottom: 2px;
    font-size: 0.72rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.calendar-nav { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }

.photo-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 10px;
    margin-top: 12px;
}
.photo-grid img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    border: 1px solid var(--border-light);
}
.photo-item { position: relative; }

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-primary);
}
.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-light);
    border-radius: 12px;
    padding: 36px;
    width: 340px;
    box-shadow: var(--shadow-lg);
}
.login-card h1 { font-size: 1.3rem; text-align: center; margin-bottom: 24px; }

.muted { color: var(--text-muted); font-size: 0.85rem; }
.text-right { text-align: right; }
.mt-16 { margin-top: 16px; }
.flex-between { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; }