:root {
    --heizomat-green: #4a7729;
    --heizomat-green-dark: #355a1c;
    --wood-brown: #6b4423;
    --flame-orange: #e0701e;
    --trouser-grey: #6e6e64;
    --boot-leather: #4a3728;
    --bg-light: #f5f4f0;
    --bg-card: #ffffff;
    --text-dark: #2b2b26;
    --border-light: #ddd9d0;
    --danger: #c0392b;
    --warning: #e0a800;
    --success: #4a7729;
}

* { box-sizing: border-box; }

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

.app-header {
    background: linear-gradient(135deg, var(--heizomat-green) 0%, var(--heizomat-green-dark) 100%);
    color: #fff;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.app-header .brand { display: flex; flex-direction: column; line-height: 1.2; }
.app-header .brand-name { font-size: 1.25rem; font-weight: 700; }
.app-header .brand-kicker { font-size: 0.8rem; color: #e7f0db; font-style: italic; }

.app-shell { display: flex; min-height: 100vh; }

.sidebar {
    width: 230px;
    background: var(--boot-leather);
    color: #ece7df;
    padding: 16px 0;
    flex-shrink: 0;
}
.sidebar a {
    display: block;
    color: #ece7df;
    text-decoration: none;
    padding: 10px 20px;
    font-size: 0.92rem;
    border-left: 3px solid transparent;
}
.sidebar a:hover, .sidebar a.active {
    background: rgba(255,255,255,0.08);
    border-left-color: var(--flame-orange);
}

.main-content { flex: 1; padding: 24px; }

.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.btn {
    display: inline-block;
    padding: 9px 18px;
    border-radius: 6px;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    text-decoration: none;
    font-weight: 600;
}
.btn-primary { background: var(--heizomat-green); color: #fff; }
.btn-primary:hover { background: var(--heizomat-green-dark); }
.btn-accent { background: var(--flame-orange); color: #fff; }
.btn-secondary { background: var(--trouser-grey); color: #fff; }
.btn-danger { background: var(--danger); color: #fff; }

table.data-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
table.data-table th {
    text-align: left;
    background: var(--bg-light);
    padding: 10px 12px;
    border-bottom: 2px solid var(--border-light);
    color: var(--boot-leather);
}
table.data-table td { padding: 9px 12px; border-bottom: 1px solid var(--border-light); }
table.data-table tr:hover { background: #faf9f6; }

.badge { padding: 3px 9px; border-radius: 12px; font-size: 0.75rem; font-weight: 600; }
.badge-green { background: #e3edd9; color: var(--heizomat-green-dark); }
.badge-orange { background: #fbe4d1; color: #a4490f; }
.badge-grey { background: #e6e5e1; color: var(--trouser-grey); }
.badge-red { background: #f5d6d2; color: var(--danger); }

.row-overdue { background: #fde8e6 !important; }
.row-soon { background: #fdf3d6 !important; }

.form-group { margin-bottom: 14px; }
.form-group label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 4px; color: var(--boot-leather); }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border-light);
    border-radius: 5px;
    font-size: 0.9rem;
}
.form-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; }

.autocomplete-wrapper { position: relative; }
.autocomplete-results {
    position: absolute;
    z-index: 50;
    background: #fff;
    border: 1px solid var(--border-light);
    border-radius: 6px;
    width: 100%;
    max-height: 220px;
    overflow-y: auto;
    box-shadow: 0 4px 10px rgba(0,0,0,0.1);
    display: none;
}
.autocomplete-results div { padding: 8px 10px; cursor: pointer; font-size: 0.88rem; }
.autocomplete-results div:hover { background: var(--bg-light); }

.metric-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 14px; margin-bottom: 20px; }
.metric-card { background: #fff; border: 1px solid var(--border-light); border-radius: 8px; padding: 16px; }
.metric-card .value { font-size: 1.6rem; font-weight: 700; color: var(--boot-leather); }
.metric-card .label { font-size: 0.8rem; color: var(--trouser-grey); }
.metric-card-accent { border-left: 4px solid var(--flame-orange); }

.login-shell { display: flex; align-items: center; justify-content: center; min-height: 100vh; }
.login-card { background: #fff; padding: 36px; border-radius: 10px; width: 360px; box-shadow: 0 6px 24px rgba(0,0,0,0.1); }
.login-card h1 { font-size: 1.1rem; text-align: center; color: var(--boot-leather); margin-bottom: 2px; }
.login-card .kicker { text-align: center; font-size: 0.8rem; color: var(--trouser-grey); font-style: italic; margin-bottom: 24px; }

.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; font-size: 0.88rem; }
.alert-error { background: #f5d6d2; color: var(--danger); }
.alert-success { background: #e3edd9; color: var(--heizomat-green-dark); }
.alert-info { background: #d9e6f0; color: #1f4f6e; }