:root {
    --bg-color: #022c22;
    --card-bg: #064e3b;
    --accent-color: #10b981;
    --accent-hover: #059669;
    --text-primary: #ecfdf5;
    --text-secondary: #a7f3d0;
    --border-color: rgba(16, 185, 129, 0.2);
    --danger-color: #ef4444;
    --warning-color: #f97316;
    --success-color: #10b981;
    --font-family: 'Inter', system-ui, -apple-system, sans-serif;
    --transition-speed: 0.3s;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    min-height: 100vh;
    padding: 20px;
}

.setup-container {
    max-width: 100%;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: 20px;
    padding: 30px;
    border: 1px solid var(--border-color);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.window-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 20px;
    margin-bottom: 20px;
}

/* Tabs */
.settings-tabs {
    display: flex;
    gap: 5px;
    margin-bottom: 30px;
    background: rgba(0, 0, 0, 0.2);
    padding: 5px;
    border-radius: 12px;
}

.tab-btn {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-secondary);
    padding: 12px;
    cursor: pointer;
    font-weight: 600;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    background: rgba(255, 255, 255, 0.05);
}

.tab-btn.active {
    background: var(--accent-color);
    color: #064e3b;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Buttons */
.primary-btn, .secondary-btn {
    border: none;
    border-radius: 8px;
    padding: 10px 20px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 8px;
}

.primary-btn {
    background-color: var(--accent-color);
    color: #064e3b;
}

.primary-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
}

.secondary-btn {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--accent-color);
    border: 1px solid var(--border-color);
}

/* Inputs */
.doc-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    color: white;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 15px;
}

.input-group label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Weichen-style Table Layouts */
.weichen-form-scroll {
    overflow-x: auto;
    margin-bottom: 30px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: rgba(0, 0, 0, 0.1);
}

.weichen-measure-grid {
    width: 100%;
    border-collapse: collapse;
    background: transparent;
    font-size: 0.85rem;
    min-width: 1000px;
}

.weichen-measure-grid th, .weichen-measure-grid td {
    border: 1px solid var(--border-color);
    padding: 12px 15px;
    text-align: left;
}

.weichen-measure-grid th {
    background: rgba(0, 0, 0, 0.4);
    color: var(--accent-color);
    font-weight: 700;
}

.weichen-measure-grid td {
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
}

.weichen-measure-grid tr:hover td {
    background: rgba(16, 185, 129, 0.08);
}

/* BÜ-MODULE SANDBOX CSS (v2.0.3) */

.bu-tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.bu-tab-panel.active {
    display: block;
}

.bu-section-title {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 10px;
    font-weight: 700;
}

/* Checklist Table */
.checklist-table {
    width: 100%;
    margin-top: 15px;
    font-size: 0.95rem;
}

.checklist-table th {
    background: rgba(16, 185, 129, 0.15) !important;
    color: var(--accent-color);
    padding: 12px;
}

.checklist-table td {
    padding: 10px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(255, 255, 255, 0.01);
}

.checklist-table tr:hover td {
    background: rgba(16, 185, 129, 0.03);
}

.checklist-table input[type="radio"] {
    transform: scale(1.2);
    cursor: pointer;
}

.io-text { color: var(--success-color); font-weight: bold; }
.nio-text { color: var(--danger-color); font-weight: bold; }

/* Grid & Cards */
.bu-grid-2col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.bu-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 20px;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Sandbox Specifics */
.doc-input {
    width: 100%;
    padding: 10px;
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--border-color);
    color: white;
    border-radius: 8px;
}

.doc-input:focus {
    border-color: var(--accent-color);
    background: rgba(255,255,255,0.08);
    outline: none;
}

.doc-input.mandatory-field {
    border-color: var(--danger-color);
    box-shadow: 0 0 5px rgba(239, 68, 68, 0.4);
    background: rgba(239, 68, 68, 0.05);
}

.doc-input.readonly {
    background: rgba(255,255,255,0.02) !important;
    color: rgba(255,255,255,0.5);
    border-color: rgba(255,255,255,0.1);
    cursor: default;
}

/* Visibility Markers */
.sicht-marker {
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background: rgba(0,0,0,0.6);
    border: 2px solid white;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
    user-select: none;
    box-shadow: 0 0 10px rgba(0,0,0,0.5);
}

.sicht-marker:hover {
    transform: scale(1.2);
    z-index: 10;
}

.sicht-marker.io { background: var(--success-color); border-color: #064e3b; color: #064e3b; }
.sicht-marker.nio { background: var(--danger-color); border-color: #7f1d1d; color: white; animation: pulseRed 2s infinite; }

@keyframes pulseRed {
    0% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7); }
    70% { box-shadow: 0 0 0 10px rgba(239, 68, 68, 0); }
    100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0); }
}

.sicht-marker-mini { width: 12px; height: 12px; border-radius: 50%; }
.sicht-marker-mini.io { background: var(--success-color); }
.sicht-marker-mini.nio { background: var(--danger-color); }

/* Quadrant 2.0 - Floating Cards and Dual Photos */
.quad-diagram-wrapper {
    position: relative;
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    border: 2px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    background: #000;
}

.calc-table-grid {
    display: grid;
    grid-template-columns: 50px 60px 45px 65px 65px 60px 1fr;
    gap: 8px;
    align-items: center;
    font-size: 0.85rem;
    margin-top: 10px;
}

.calc-table-grid .th {
    font-weight: 700;
    color: var(--accent-color);
    font-size: 0.7rem;
    padding-bottom: 5px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    text-transform: uppercase;
}

.calc-table-grid .td, .calc-table-grid .td-label {
    padding: 4px 0;
}

.calc-table-grid .td-label {
    font-weight: 700;
    color: #fff;
    opacity: 0.9;
}

.calc-card-tabular {
    padding: 15px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 15px;
}

.calc-card-tabular.warning-border {
    border-color: var(--danger-color);
    background: rgba(127, 29, 29, 0.05);
}

.badge.danger {
    background: var(--danger-color);
    color: #fff;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 700;
}

.quad-diagram-img {
    width: 100%;
    display: block;
    opacity: 1.0;
}

.quad-card-floating {
    position: absolute;
    width: 270px;
    background: rgba(6, 78, 59, 0.7);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 16px;
    padding: 15px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.6);
    z-index: 5;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.quad-card-floating:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--accent-color);
    background: rgba(6, 78, 59, 0.85);
    z-index: 50;
}

.quad-card-floating.nio-status {
    border-color: var(--danger-color);
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.3);
    background: rgba(127, 29, 29, 0.4);
}

.quad-card-title {
    font-weight: 800;
    font-size: 0.85rem;
    color: var(--accent-color);
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
}

.quad-photo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 10px;
}

.quad-photo-slot {
    position: relative;
    height: 80px;
    background: rgba(255,255,255,0.05);
    border: 1px dashed rgba(255,255,255,0.2);
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.quad-photo-slot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.la-center-container {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    gap: 5px;
    z-index: 100;
    pointer-events: none; /* Klicks gehen durch auf das Diagramm falls nötig */
}

.la-center-container.pos-top { top: 20px; }
.la-center-container.pos-bottom { bottom: 20px; }

.la-box-main, .la-box-sub {
    background: rgba(16, 185, 129, 0.85); /* Akzent-Grün */
    backdrop-filter: blur(5px);
    border: 1px solid white;
    color: white;
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    text-align: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    min-width: 120px;
}

.la-box-sub {
    background: rgba(6, 78, 59, 0.8); /* Dunkleres Grün */
    font-size: 0.8rem;
    padding: 4px 10px;
    margin-top: 50px; /* Verschiebung Vmax Oben zur Mitte */
}

.pos-bottom .la-box-sub {
    margin-top: 0;
    margin-bottom: 50px; /* Verschiebung Vmax Unten zur Mitte */
}

.la-box-main span, .la-box-sub span {
    color: #fcd34d; /* Gelb-Akzent für die Werte */
    font-size: 1rem;
}

.quad-photo-label {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.6);
    color: white;
    font-size: 0.75rem;
    text-align: center;
    padding: 5px 0;
    font-weight: 700;
    pointer-events: none;
}

/* Positioning for the 4 corners */
.pos-q1 { bottom: 15px; left: 15px; }   /* LH */
.pos-q2 { top: 15px; left: 15px; }      /* LV */
.pos-q3 { top: 15px; right: 15px; }     /* RV */
.pos-q4 { bottom: 15px; right: 15px; }  /* RH */

.la-display-box { display: none; } /* Veraltet */
.small-input { display: none; } /* Veraltet */


.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    transition: transform 0.1s;
}

.icon-btn:hover {
    transform: scale(1.2);
}

/* Photo Delete Button Overlay */
.photo-delete-btn {
    position: absolute;
    top: 5px;
    right: 5px;
    width: 20px;
    height: 20px;
    background: var(--danger-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    font-weight: bold;
    cursor: pointer;
    z-index: 10;
    border: 1px solid white;
    box-shadow: 0 0 5px rgba(0,0,0,0.5);
    line-height: 1;
    user-select: none;
}

.photo-delete-btn:hover {
    background: #b91c1c;
    transform: scale(1.1);
}

/* Sichtflächen-Berechnung (VDV 363) */
.calc-card {
    padding: 12px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 0;
    transition: all 0.3s ease;
}

.calc-card:hover {
    background: rgba(16, 185, 129, 0.05);
    border-color: var(--accent-color);
}

.calc-card-header {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 10px;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 5px;
}

.calc-grid-inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.calc-input label {
    display: block;
    font-size: 0.7rem;
    opacity: 0.7;
    margin-bottom: 4px;
}

.doc-input.compact {
    padding: 5px 8px !important;
    font-size: 0.85rem !important;
    height: auto !important;
    background: rgba(0,0,0,0.2) !important;
}

.calc-result {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.res-lbl {
    font-size: 0.65rem;
    opacity: 0.6;
}

.res-val {
    font-size: 1.2rem;
    font-weight: 800;
    color: #fff;
}

.calc-result.highlight .res-val {
    color: #fcd34d; /* Gelb für La */
}

.v-min-overlay {
    position: absolute;
    top: 15px;
    background: rgba(16, 185, 129, 0.9);
    backdrop-filter: blur(4px);
    color: white;
    padding: 5px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 900;
    box-shadow: 0 4px 15px rgba(0,0,0,0.4);
    z-index: 10;
    border: 1px solid white;
}

.overlay-left { left: 15px; }
.overlay-right { right: 15px; }

.sicht-marker {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    cursor: pointer;
    border: 2px solid white;
    box-shadow: 0 0 12px rgba(0,0,0,0.6);
    transition: all 0.2s;
    font-size: 0.85rem;
}

.sicht-marker:hover {
    transform: scale(1.2) !important;
    z-index: 100;
}

#buMainContent {
    background: rgba(255, 255, 255, 0.02);
    border-radius: 12px;
    padding: 25px;
    border: 1px solid var(--border-color);
    min-height: 500px;
    width: 100%;
    animation: fadeIn 0.3s ease;
}

/* Modal Overlays */
#newBUModal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.modal-content {
    background: var(--card-bg);
    padding: 30px;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    width: 450px;
    max-width: 90%;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content h3 {
    margin-bottom: 20px;
    color: var(--accent-color);
    font-size: 1.3rem;
    margin-top: 0;
}