:root {
    --primary: #0284c7; --primary-hover: #0369a1;
    --bg-gradient-start: #f8fafc; --bg-gradient-end: #e2e8f0;
    --card-bg: #ffffff; --text-main: #0f172a; --text-muted: #64748b;
    --border-color: #e2e8f0; --primary-light: #e0f2fe;
    --success-bg: #f0fdf4; --success-text: #16a34a; --success-border: #bbf7d0;
}

*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0; padding: 0; font-family: 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--bg-gradient-start) 0%, var(--bg-gradient-end) 100%);
    color: var(--text-main); min-height: 100vh; line-height: 1.6;
}
h1, h2, h3 { margin-top: 0; line-height: 1.2; }

/* Basis Komponenten */
.card-base {
    background: var(--card-bg); border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05);
    border: 1px solid var(--border-color); padding: 1.5rem;
}

/* NEU: Mobile Touch Targets (min-height: 44px) */
.btn {
    display: inline-block; background: var(--primary); color: #ffffff;
    padding: 0.5rem 1rem; border-radius: 8px; border: none; font-size: 1rem; 
    cursor: pointer; transition: background 0.2s ease;
    min-height: 44px; /* Touch-freundlich */
}
.btn:hover { background: var(--primary-hover); color: #ffffff; }

.workspace-container { max-width: 1400px; margin: 0 auto; padding: 2rem 1.5rem; display: flex; flex-direction: column; gap: 1.5rem; }
.tool-header { display: flex; justify-content: space-between; align-items: center; padding: 20px 30px; }
.header-titles h1 { font-size: 2.2rem; font-weight: 700; color: var(--text-main); letter-spacing: -0.5px; margin: 0 0 5px 0; }
.header-titles p { color: var(--text-muted); font-size: 1.1rem; margin: 0; }
.header-right { display: flex; align-items: center; gap: 1rem; flex-wrap: wrap; }

.status-badge { display: inline-flex; align-items: center; gap: 0.5rem; background-color: var(--bg-gradient-start); border: 1px solid var(--border-color); padding: 0.5rem 1rem; border-radius: 9999px; font-size: 0.9rem; font-weight: 500; color: var(--text-muted); min-height: 44px; }
.status-badge.loaded { background-color: var(--success-bg); border-color: var(--success-border); color: var(--success-text); font-weight: 600; }

.btn-tool { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; font-weight: 600; box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05); }
.btn-tool:hover { transform: translateY(-2px); box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1); }
.btn-secondary { background-color: #e2e8f0; color: #334155; }
.btn-secondary:hover { background-color: #cbd5e1; color: #334155; }
.btn-success { background-color: #16a34a; color: white; }
.btn-success:hover { background-color: #15803d; color: white; }

.upload-wrapper { position: relative; overflow: hidden; display: inline-block; }
.upload-wrapper input[type="file"] { position: absolute; left: 0; top: 0; opacity: 0; cursor: pointer; font-size: 100px; height: 100%; }

/* NEU: Sticky Tab Navigation */
.tab-navigation { 
    display: flex; gap: 1rem; padding: 15px 0; flex-wrap: nowrap; overflow-x: auto;
    position: sticky; top: 0; z-index: 100; 
    background: rgba(248, 250, 252, 0.95); backdrop-filter: blur(8px);
    margin-top: -1rem; border-bottom: 1px solid var(--border-color);
}
.tab-navigation::-webkit-scrollbar { display: none; } /* Scrollbar verstecken */
.tab-btn {
    flex: 1; min-width: max-content; padding: 0.75rem 1.25rem; font-size: 1.1rem; font-weight: 700;
    background: var(--card-bg); border: 1px solid var(--border-color); border-radius: 8px;
    color: var(--text-muted); cursor: pointer; transition: all 0.2s;
    display: flex; align-items: center; justify-content: center; gap: 0.75rem;
    min-height: 48px; box-shadow: 0 1px 2px 0 rgb(0 0 0 / 0.05);
}
.tab-btn:hover { background: var(--bg-gradient-start); }
.tab-btn.active { background: var(--primary-light); color: var(--primary); border-color: var(--primary); }
.tab-badge { background: var(--text-muted); color: white; padding: 2px 10px; border-radius: 999px; font-size: 0.9rem; }
.tab-btn.active .tab-badge { background: var(--primary); }
.tab-content { display: none; animation: fadeIn 0.3s ease; }
.tab-content.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Formulare */
.main-content-area { display: flex; flex-direction: column; gap: 1.5rem; }
.controls-toolbar { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.25rem; padding: 24px 30px; align-items: center; }
.search-full-width { grid-column: span 2; } 
.control-field { display: flex; flex-direction: column; gap: 0.4rem; }
.control-field label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--text-muted); }
select, input[type="text"] { width: 100%; padding: 0.75rem 1rem; font-size: 0.95rem; border: 1px solid var(--border-color); border-radius: 8px; background-color: #ffffff; color: var(--text-main); transition: all 0.2s; font-family: inherit; min-height: 44px; }
select:focus, input[type="text"]:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15); }
select:disabled { background-color: var(--bg-gradient-start); color: #94a3b8; cursor: not-allowed; }

.filter-checkbox-wrapper { display: flex; align-items: center; gap: 0.5rem; background-color: var(--bg-gradient-start); border: 1px solid var(--border-color); padding: 0.75rem 1rem; border-radius: 8px; min-height: 44px; cursor: pointer; font-size: 0.9rem; font-weight: 600; color: var(--text-main); user-select: none; margin-top: 1.4rem; transition: all 0.2s; }
.filter-checkbox-wrapper:hover { border-color: var(--primary-light); background-color: #f1f5f9; }
.filter-checkbox-wrapper input { width: 1.2rem; height: 1.2rem; accent-color: var(--primary); cursor: pointer; }

/* Ergebnisse */
.results-container { display: flex; flex-direction: column; gap: 1.5rem; }
.law-card { padding: 30px; transition: box-shadow 0.2s; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; gap: 10px; }
.badge { background-color: var(--primary-light); color: var(--primary); font-size: 0.8rem; font-weight: 700; padding: 0.35rem 0.85rem; border-radius: 9999px; text-transform: uppercase; }
.law-title-meta { font-size: 0.95rem; color: var(--text-muted); font-weight: 500; margin-left: 0.5rem; }
.paragraph-heading { font-size: 1.4rem; font-weight: 700; color: var(--text-main); margin-bottom: 1.25rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--border-color); }
.paragraph-box { background-color: var(--bg-gradient-start); border: 1px solid var(--border-color); border-radius: 12px; padding: 1.25rem 1.5rem; margin-bottom: 1rem; transition: all 0.2s ease-in-out; }
.paragraph-box-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.75rem; flex-wrap: wrap; gap: 10px; }
.absatz-tag { font-weight: 700; font-size: 0.85rem; color: var(--primary); background-color: var(--primary-light); padding: 0.25rem 0.6rem; border-radius: 6px; }

.action-buttons-group { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.action-icon-btn { background: #ffffff; border: 1px solid var(--border-color); color: var(--text-muted); font-size: 0.85rem; font-weight: 600; padding: 0.6rem 0.75rem; border-radius: 8px; cursor: pointer; transition: all 0.2s; display: inline-flex; align-items: center; gap: 0.35rem; font-family: inherit; min-height: 38px; }
.action-icon-btn.added { background-color: var(--success-bg); color: var(--success-text); border-color: var(--success-border); }

/* NEU: Progressive Disclosure (Text einklappen) */
.text-content-wrapper { margin-bottom: 1rem; }
.text-clamp { display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }
.paragraph-text { font-size: 0.95rem; color: #334155; white-space: pre-line; line-height: 1.6; margin-bottom: 0; }
.revision-preview-box { background-color: #ffffff; border: 1px solid #bae6fd; border-left: 4px solid var(--primary); border-radius: 8px; padding: 1rem 1.25rem; font-size: 0.9rem; color: var(--text-main); white-space: pre-line; line-height: 1.6; }
.toggle-more-btn { background: none; border: none; color: var(--primary); font-weight: 700; font-size: 0.85rem; padding: 5px 0; margin-top: 5px; cursor: pointer; display: flex; align-items: center; gap: 5px; }

/* Entwurf Ansicht */
.document-view { background-color: #ffffff; border-radius: 12px; box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04); padding: 40px 50px; display: flex; flex-direction: column; gap: 1.5rem; }
.doc-header { display: flex; justify-content: space-between; align-items: flex-end; border-bottom: 2px solid var(--text-main); padding-bottom: 1rem; margin-bottom: 1rem; flex-wrap: wrap; gap: 10px;}
.doc-header h3 { font-size: 1.5rem; font-weight: 700; color: var(--text-main); margin: 0; letter-spacing: -0.5px; }
.counter-badge { background-color: var(--primary-light); color: var(--primary); font-size: 0.85rem; font-weight: 700; padding: 0.3rem 0.8rem; border-radius: 9999px; }
.doc-items-list { display: flex; flex-direction: column; }
.doc-item { padding: 1.5rem 0; border-bottom: 1px dashed var(--border-color); position: relative; transition: background 0.2s; }
.doc-item:last-child { border-bottom: none; }
.doc-item-title-row { display: flex; align-items: baseline; gap: 0.5rem; margin-bottom: 0.5rem; flex-wrap: wrap; }
.doc-item-num { font-weight: 700; font-size: 1.1rem; color: var(--text-main); }
.doc-title-input { flex-grow: 1; min-width: 200px; font-size: 1.1rem; font-weight: 700; color: var(--text-main); border: 1px solid transparent; background: transparent; padding: 0.2rem 0.5rem; border-radius: 4px; transition: all 0.2s; margin-left: -0.5rem; }
.doc-title-input:hover, .doc-title-input:focus { border-color: var(--primary-light); background: #f1f5f9; outline: none; }
.doc-editable-text { font-size: 1rem; color: #1e293b; white-space: pre-wrap; line-height: 1.6; text-align: justify; outline: none; padding: 0.5rem; margin-left: -0.5rem; border-radius: 4px; border: 1px solid transparent; transition: all 0.2s; }
.doc-editable-text:hover { background-color: #f1f5f9; cursor: text; }
.doc-editable-text:focus { border-color: var(--primary-light); background-color: #ffffff; box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15); }
.doc-item-actions { opacity: 0; position: absolute; top: 1.5rem; right: 0; background: #f8fafc; padding-left: 10px; box-shadow: -10px 0 10px #f8fafc; display: flex; gap: 0.35rem; transition: opacity 0.2s; }
.doc-item:hover .doc-item-actions { opacity: 1; right: 15px; }
.doc-empty { text-align: center; padding: 4rem 2rem; color: var(--text-muted); font-size: 1.1rem; border: 2px dashed var(--border-color); border-radius: 8px; margin-top: 2rem; }
.doc-footer { display: flex; gap: 1rem; margin-top: 1rem; padding-top: 1rem; border-top: 1px solid var(--border-color); flex-wrap: wrap; }

/* NEU: Toast Notification */
.toast {
    position: fixed; bottom: 30px; left: 50%; transform: translateX(-50%) translateY(100px);
    background: #1f2937; color: white; padding: 14px 24px; border-radius: 50px;
    font-weight: 600; font-size: 1rem; box-shadow: 0 10px 15px -3px rgba(0,0,0,0.1);
    opacity: 0; transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55); z-index: 9999;
    pointer-events: none;
}
.toast.show { transform: translateX(-50%) translateY(0); opacity: 1; }

/* =========================================
   NEU: STRICT MOBILE OPTIMIZATION (bis 900px)
   ========================================= */
@media (max-width: 900px) { 
    .workspace-container { padding: 1rem 0.75rem; gap: 1rem; }
    .tool-header { padding: 15px; flex-direction: column; align-items: flex-start; gap: 15px; }
    .controls-toolbar { grid-template-columns: 1fr; padding: 15px; gap: 1rem; } 
    .search-full-width { grid-column: span 1; } 
    .card-base { padding: 15px; }
    .law-card { padding: 15px; }
    .paragraph-box { padding: 15px; }
    .document-view { padding: 20px 15px; }
    .doc-item-actions { opacity: 1; position: static; box-shadow: none; padding: 10px 0 0 0; justify-content: flex-end; background: transparent; } 
    .doc-item:hover { padding: 1.5rem 0; margin: 0; border-radius: 0; background-color: transparent;}
    .filter-checkbox-wrapper { margin-top: 0.5rem; }
}