:root {
    --bg: #f5f6f8;
    --surface: #ffffff;
    --border: #e2e5ea;
    --text: #1b2027;
    --text-muted: #6b7280;
    --primary: #2f5233;
    --primary-hover: #24401f;
    --danger: #b3392c;
    --danger-bg: #fdecea;
    --success-bg: #e9f3ea;
    --success-text: #24401f;
    --radius: 8px;
    --shadow: 0 1px 2px rgba(20, 20, 20, 0.06), 0 1px 8px rgba(20, 20, 20, 0.04);
}

* { box-sizing: border-box; }

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

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

.page { max-width: 960px; margin: 0 auto; padding: 32px 24px 80px; }

/* Topbar */
.topbar {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.topbar-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 14px 24px;
    display: flex;
    align-items: center;
    gap: 24px;
}
.brand { font-weight: 700; font-size: 1.05rem; color: var(--text); padding: 6px 10px; margin: -6px -10px; border-radius: 6px; transition: background-color 0.12s ease; }
.brand:hover { text-decoration: none; background: var(--bg); }
.topnav { display: flex; gap: 6px; flex: 1; }
.topnav a { color: var(--text-muted); font-size: 0.95rem; padding: 7px 10px; border-radius: 6px; transition: background-color 0.12s ease, color 0.12s ease; }
.topnav a:hover { color: var(--text); text-decoration: none; background: var(--bg); }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: 0.9rem; color: var(--text-muted); }
.idle-timer-badge { font-variant-numeric: tabular-nums; font-size: 0.78rem; background: var(--bg); border: 1px solid var(--border); border-radius: 100px; padding: 3px 10px; color: var(--text-muted); }
.idle-timer-badge.idle-timer-warning { background: var(--danger-bg); border-color: #f2c9c3; color: var(--danger); font-weight: 600; }

/* Layout helpers */
.page-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}
.page-head h1 { margin: 0 0 4px; font-size: 1.5rem; display: flex; align-items: center; gap: 10px; }
.page-head-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.section-title { margin-top: 40px; font-size: 1.15rem; }
.muted { color: var(--text-muted); }
.small { font-size: 0.85rem; }
.back-link { display: inline-block; margin-bottom: 16px; font-size: 0.9rem; }

/* Cards */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 20px;
}

/* Auth */
.auth-wrap { display: flex; justify-content: center; padding-top: 8vh; }
.auth-card { width: 100%; max-width: 360px; }
.auth-card h1 { margin-top: 0; font-size: 1.3rem; }

/* Forms */
label { display: block; font-size: 0.85rem; font-weight: 600; margin: 14px 0 6px; }
input[type="text"], input[type="password"], textarea, select {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: inherit;
    background: var(--surface);
    color: var(--text);
}
input:focus, textarea:focus, select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 1px;
}
textarea { resize: vertical; }

.btn {
    display: inline-block;
    border: none;
    border-radius: 6px;
    padding: 9px 16px;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); text-decoration: none; }
.btn-secondary { background: var(--bg); color: var(--text); border: 1px solid var(--border); }
.btn-secondary:hover { background: #eceef1; text-decoration: none; }
.btn-danger { background: var(--danger-bg); color: var(--danger); border: 1px solid #f2c9c3; }
.btn-danger:hover { background: #fbdbd6; text-decoration: none; }

.btn-link { background: none; border: none; padding: 0; color: var(--primary); cursor: pointer; font-size: 0.85rem; font-family: inherit; }
.btn-link:hover { text-decoration: underline; }
.btn-link-danger { color: var(--danger); }

form.card { margin-bottom: 24px; }
form.card > button { margin-top: 16px; }

/* Alerts */
.alert { padding: 10px 14px; border-radius: 6px; font-size: 0.9rem; margin: 0 0 14px; }
.alert-error { background: var(--danger-bg); color: var(--danger); }
.alert-success { background: var(--success-bg); color: var(--success-text); }
.alert-warning { background: #fbf2d9; color: #8a6a06; border: 1px solid #f0dfa0; }

/* Freitext-Dokumentation */
.doc-content { white-space: pre-line; }
.doc-preview { white-space: pre-line; background: var(--bg); border: 1px dashed var(--border); border-radius: 6px; padding: 12px; margin-top: 8px; font-size: 0.9rem; }

/* Project grid */
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 16px;
}
.project-card { display: block; color: inherit; }
.project-card:hover { text-decoration: none; border-color: var(--primary); }
.project-card-top { display: flex; justify-content: space-between; align-items: flex-start; gap: 10px; }
.project-card h2 { font-size: 1.05rem; margin: 0 0 8px; }
.project-desc { color: var(--text-muted); font-size: 0.88rem; min-height: 40px; }
.project-meta { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--text-muted); margin-top: 10px; }
.project-full-desc { color: var(--text-muted); white-space: pre-line; }

.empty-state { color: var(--text-muted); padding: 40px 0; text-align: center; }

/* Badges */
.badge { display: inline-block; padding: 3px 9px; border-radius: 100px; font-size: 0.72rem; font-weight: 600; }
.badge-geplant { background: #e8eef7; color: #2a4d8f; }
.badge-aktiv { background: var(--success-bg); color: var(--success-text); }
.badge-pausiert { background: #fbf2d9; color: #8a6a06; }
.badge-abgeschlossen { background: #e9e9ec; color: #4b4b52; }

/* Entries */
.entry-list { display: flex; flex-direction: column; gap: 14px; margin-top: 16px; }
.entry-head { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.entry-head h3 { margin: 0; font-size: 1rem; }
.entry-content { white-space: pre-line; margin: 10px 0 6px; }
.entry-delete { text-align: right; }

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(20, 20, 20, 0.45);
    align-items: center;
    justify-content: center;
    padding: 20px;
    z-index: 50;
}
.modal-overlay.open { display: flex; }
.modal { width: 100%; max-width: 440px; }
.modal h2 { margin-top: 0; font-size: 1.1rem; }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }

/* Table */
.user-table { width: 100%; border-collapse: collapse; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.user-table th, .user-table td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.user-table th { background: var(--bg); font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--text-muted); }
.user-table tr:last-child td { border-bottom: none; }
.user-actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.inline-form { display: inline; }
.role-select { width: auto; padding: 4px 8px; font-size: 0.85rem; display: inline-block; }
.radio-option { display: flex; align-items: flex-start; gap: 8px; font-weight: normal; font-size: 0.9rem; margin: 10px 0; cursor: pointer; }
.radio-option input[type="radio"] { margin-top: 3px; width: auto; }

/* Port-Zeilen (Geräteformular) */
.port-row { display: flex; align-items: center; gap: 10px; margin-bottom: 8px; }
.port-direction-label { width: 64px; flex-shrink: 0; font-size: 0.78rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.03em; padding: 3px 8px; border-radius: 100px; text-align: center; }
.port-row-input .port-direction-label { background: #e8eef7; color: #2a4d8f; }
.port-row-output .port-direction-label { background: var(--success-bg); color: var(--success-text); }
.port-label-input { margin: 0; flex: 1; }
.bulk-port-add { display: flex; gap: 20px; flex-wrap: wrap; margin: 14px 0; padding: 12px; background: var(--bg); border-radius: 6px; }
.bulk-port-add label { margin: 0 0 6px; }

/* Bildergalerie */
.image-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-top: 14px; }
.image-thumb { position: relative; display: block; border-radius: var(--radius); overflow: hidden; border: 1px solid var(--border); aspect-ratio: 1 / 1; background: var(--bg); }
.image-thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.image-thumb .annotation-count { position: absolute; bottom: 6px; right: 6px; background: rgba(20,20,20,0.65); color: #fff; font-size: 0.72rem; padding: 2px 7px; border-radius: 100px; }
.upload-drop { border: 2px dashed var(--border); border-radius: var(--radius); padding: 24px; text-align: center; color: var(--text-muted); margin-top: 14px; cursor: pointer; background: var(--surface); }
.upload-drop.dragover { border-color: var(--primary); background: var(--success-bg); }
.upload-drop input[type=file] { display: none; }

/* Dokumente */
.document-list { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.document-row { display: flex; flex-direction: column; gap: 6px; background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 10px 14px; }
.document-row-main { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.document-note-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; padding-left: 2px; }
.document-note-text { font-size: 0.85rem; color: var(--text-muted); white-space: pre-line; }
.document-name { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.document-name-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; display: inline-block; max-width: min(380px, 55vw); vertical-align: middle; }
.document-ext { background: var(--bg); color: var(--text-muted); font-size: 0.7rem; font-weight: 700; padding: 3px 7px; border-radius: 4px; letter-spacing: 0.02em; flex-shrink: 0; }

/* Bild-Annotator */
.annotator-toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.annotator-toolbar-secondary { margin-bottom: 14px; margin-top: -6px; }
.annotator-toolbar .tool-btn { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 7px 12px; font-size: 0.85rem; cursor: pointer; }
.annotator-toolbar .tool-btn.active { background: var(--primary); color: #fff; border-color: var(--primary); }
.color-picker { display: flex; gap: 6px; align-items: center; padding: 0 6px; border-left: 1px solid var(--border); border-right: 1px solid var(--border); }
.color-swatch { width: 20px; height: 20px; border-radius: 50%; border: 2px solid transparent; cursor: pointer; padding: 0; }
.color-swatch.active { border-color: var(--text); box-shadow: 0 0 0 2px var(--surface); }
.stroke-picker { display: flex; gap: 6px; align-items: center; padding: 0 6px; }
.stroke-swatch { width: 30px; height: 24px; border-radius: 5px; border: 1px solid var(--border); background: var(--surface); cursor: pointer; display: flex; align-items: center; justify-content: center; padding: 0; }
.stroke-swatch span { display: block; width: 18px; background: var(--text); border-radius: 2px; }
.stroke-swatch.active { border-color: var(--primary); background: var(--success-bg); }
.annotation-popup-edit { padding: 8px 10px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }
.annotation-popup-edit .color-picker, .annotation-popup-edit .stroke-picker { border: none; padding: 0; }
.annotator-stage-wrap { position: relative; background: #14161a; border-radius: var(--radius); overflow: auto; display: flex; justify-content: center; }
.annotator-stage { position: relative; display: inline-block; line-height: 0; }
.annotator-stage img { max-width: 100%; display: block; user-select: none; -webkit-user-drag: none; }
.annotator-stage svg { position: absolute; top: 0; left: 0; cursor: crosshair; touch-action: none; }
.annotation-comment-popup {
    position: absolute; background: var(--surface); border: 1px solid var(--border); border-radius: 8px;
    box-shadow: 0 4px 16px rgba(20,20,20,0.18); width: 250px; font-size: 0.85rem; z-index: 20; overflow: hidden;
}
.annotation-popup-header { display: flex; justify-content: space-between; align-items: center; padding: 8px 10px; background: var(--bg); border-bottom: 1px solid var(--border); }
.annotation-popup-header strong { font-size: 0.85rem; }
.annotation-popup-close { background: none; border: none; font-size: 1.1rem; line-height: 1; cursor: pointer; color: var(--text-muted); padding: 0 2px; }
.annotation-popup-body { padding: 10px; line-height: 1.5; white-space: pre-wrap; word-break: break-word; color: var(--text); }
.annotation-popup-footer { padding: 0 10px 10px; }

/* Patchplan-Canvas */
.patch-toolbar { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; flex-wrap: wrap; }
.patch-canvas-wrap { position: relative; border: 1px solid var(--border); border-radius: var(--radius); background:
    linear-gradient(0deg, transparent 24px, var(--border) 25px), linear-gradient(90deg, transparent 24px, var(--border) 25px);
    background-size: 25px 25px; background-color: var(--surface);
    height: 640px; overflow: auto;
}
.patch-canvas { position: relative; width: 2000px; height: 1400px; }
.patch-canvas svg { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; }
.patch-device {
    position: absolute; background: var(--surface); border: 1px solid var(--border); border-radius: 6px;
    box-shadow: var(--shadow); min-width: 170px; cursor: move; user-select: none;
}
.patch-device-head { display: flex; justify-content: space-between; align-items: center; padding: 7px 10px; background: var(--bg); border-bottom: 1px solid var(--border); border-radius: 6px 6px 0 0; font-size: 0.85rem; font-weight: 600; touch-action: none; }
.patch-device-head .remove-device-btn { background: none; border: none; color: var(--danger); cursor: pointer; font-size: 0.9rem; line-height: 1; }
.patch-device-body { display: flex; justify-content: space-between; padding: 8px 0; gap: 8px; }
.patch-port-col { display: flex; flex-direction: column; gap: 6px; flex: 1; }
.patch-port-col.outputs { align-items: flex-end; }
.patch-port { display: flex; align-items: center; gap: 6px; font-size: 0.76rem; color: var(--text-muted); white-space: nowrap; }
.patch-port-col.outputs .patch-port { flex-direction: row-reverse; }
.patch-port-dot { display: inline-block; width: 11px; height: 11px; border-radius: 50%; background: var(--surface); border: 2px solid var(--primary); cursor: crosshair; flex-shrink: 0; }
.patch-port-dot:hover, .patch-port-dot.selected { background: var(--primary); }
.patch-port-col.inputs .patch-port-dot { margin-left: -16px; }
.patch-port-col.outputs .patch-port-dot { margin-right: -16px; }
.patch-device-palette { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.patch-device-palette button { background: var(--surface); border: 1px solid var(--border); border-radius: 6px; padding: 7px 12px; font-size: 0.85rem; cursor: pointer; }
.patch-device-palette button:hover { border-color: var(--primary); }
.patch-connection-line { stroke: var(--primary); stroke-width: 2; fill: none; pointer-events: stroke; cursor: pointer; }
.patch-connection-line:hover { stroke: var(--danger); }
.cable-type-legend { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 12px; }
.cable-type-chip { display: inline-flex; align-items: center; gap: 6px; font-size: 0.82rem; color: var(--text-muted); }
.cable-type-dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.patch-connection-label { font-size: 10px; fill: var(--text-muted); }

/* Fahrzeuge/Servicetypen-Kataloge */
.catalog-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 16px; margin-bottom: 8px; }
.catalog-list { list-style: none; padding: 0; margin: 10px 0 0; }
.catalog-list li { display: flex; justify-content: space-between; align-items: center; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }
.catalog-list li:last-child { border-bottom: none; }
.status-badge { display: inline-block; padding: 3px 10px; border-radius: 100px; font-size: 0.78rem; font-weight: 600; border: 1px solid; }
.archive-list { display: none; opacity: 0.85; }
.archive-list.open-archive { display: flex; }

/* Impressum / rechtliche Seiten */
.legal-page { max-width: 640px; }
.legal-page h2 { font-size: 1.05rem; margin-top: 28px; margin-bottom: 6px; }
.legal-page p { line-height: 1.6; }
.legal-page ul { line-height: 1.6; padding-left: 22px; }
.legal-page li { margin-bottom: 4px; }
.legal-footer-link { text-align: center; margin-top: 18px; font-size: 0.85rem; }
.site-footer { text-align: center; padding: 24px; font-size: 0.82rem; color: var(--text-muted); }
.site-footer a { color: var(--text-muted); }

@media (max-width: 640px) {
    .page { padding: 20px 14px 60px; }
    .topbar-inner { flex-wrap: wrap; gap: 10px; padding: 12px 14px; }
    .topnav { gap: 14px; }
    .page-head { flex-direction: column; align-items: stretch; }
    .page-head-actions { flex-wrap: wrap; }
    .page-head h1 { font-size: 1.25rem; }
    .user-table { display: block; overflow-x: auto; }
    .project-grid { grid-template-columns: 1fr; }
    .image-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
    .modal-overlay { padding: 12px; align-items: flex-end; }
    .modal { max-width: 100%; max-height: 85vh; overflow-y: auto; }
    .annotator-toolbar { gap: 6px; }
    .annotator-toolbar .tool-btn { padding: 7px 9px; font-size: 0.8rem; }
    .color-picker, .stroke-picker { border: none; padding: 4px 0; }
    .annotator-stage-wrap { max-height: 60vh; }
    .patch-canvas-wrap { height: 70vh; }
    .patch-device-palette { max-height: 140px; overflow-y: auto; }
    .modal-actions { flex-wrap: wrap; }
    .modal-actions form, .modal-actions button { flex: 1; min-width: 120px; }
    .bulk-port-add { flex-direction: column; gap: 10px; }
    table.user-table th, table.user-table td { padding: 8px 10px; font-size: 0.82rem; }
    .entry-head { flex-direction: column; align-items: flex-start; gap: 2px; }
}

@media (max-width: 420px) {
    .page-head-actions .btn, .page-head-actions button { width: 100%; }
}