/* ============================================================
   Kartei SVWI – Hauptstylesheet
   Designsprache: Clean Academic / Modern Dark Navy
   ============================================================ */

:root {
  --navy:    #0f172a;
  --navy-2:  #1e293b;
  --navy-3:  #334155;
  --blue:    #3b82f6;
  --blue-2:  #2563eb;
  --blue-light: #eff6ff;
  --teal:    #14b8a6;
  --green:   #22c55e;
  --red:     #ef4444;
  --amber:   #f59e0b;
  --text:    #1e293b;
  --text-2:  #475569;
  --text-3:  #94a3b8;
  --border:  #e2e8f0;
  --bg:      #f8fafc;
  --white:   #ffffff;
  --radius:  10px;
  --radius-lg: 16px;
  --shadow:  0 1px 3px rgba(0,0,0,.08), 0 4px 12px rgba(0,0,0,.05);
  --shadow-lg: 0 8px 32px rgba(0,0,0,.12);
  --font:    'Sora', system-ui, sans-serif;
  --mono:    'JetBrains Mono', monospace;
  --transition: 200ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 20px; }
.text-muted { color: var(--text-2); font-size: 0.92rem; }
.flex-2 { flex: 2 !important; }

/* ── NAVBAR ─────────────────────────────────────────────── */
.navbar {
  background: var(--navy);
  position: sticky; top: 0; z-index: 100;
  box-shadow: 0 1px 0 rgba(255,255,255,.06);
}
.nav-inner {
  max-width: 1100px; margin: 0 auto; padding: 0 20px;
  height: 58px; display: flex; align-items: center; gap: 16px;
}
.nav-logo {
  display: flex; align-items: center; gap: 8px;
  color: white; font-weight: 700; font-size: 1.1rem;
  text-decoration: none;
}
.logo-icon { font-size: 1.4rem; }
.logo-text { color: white; }
.nav-links {
  display: flex; align-items: center; gap: 4px; margin-left: auto;
}
.nav-link {
  color: #94a3b8; padding: 6px 12px; border-radius: 6px;
  font-size: 0.9rem; text-decoration: none; transition: var(--transition);
}
.nav-link:hover { color: white; background: rgba(255,255,255,.07); text-decoration: none; }

.nav-user-menu { position: relative; }
.nav-user-btn {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.1);
  color: white; padding: 6px 12px 6px 8px;
  border-radius: 8px; cursor: pointer; font-size: 0.88rem;
  font-family: var(--font); transition: var(--transition);
}
.nav-user-btn:hover { background: rgba(255,255,255,.14); }
.user-avatar {
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--blue); color: white; font-size: 0.75rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.user-dropdown {
  position: absolute; right: 0; top: calc(100% + 8px);
  background: var(--navy-2); border: 1px solid var(--navy-3);
  border-radius: 10px; min-width: 160px;
  box-shadow: var(--shadow-lg); overflow: hidden;
  opacity: 0; pointer-events: none; transform: translateY(-6px);
  transition: var(--transition);
}
.user-dropdown.open { opacity: 1; pointer-events: all; transform: none; }
.user-dropdown a {
  display: block; padding: 10px 16px; color: #cbd5e1;
  font-size: 0.9rem; text-decoration: none; transition: var(--transition);
}
.user-dropdown a:hover { background: rgba(255,255,255,.06); color: white; }

.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
  margin-left: auto;
}
.nav-toggle span {
  display: block; width: 22px; height: 2px;
  background: #94a3b8; border-radius: 2px; transition: var(--transition);
}

/* ── MAIN LAYOUT ────────────────────────────────────────── */
.site-body {
  display: flex;
  align-items: flex-start;
  min-height: calc(100vh - 58px);
}
.main-content { flex: 1; min-width: 0; }

/* ── GLOBAL SIDEBAR ─────────────────────────────────────── */
.global-sidebar {
  width: 200px;
  flex-shrink: 0;
  background: white;
  border-right: 1.5px solid var(--border);
  padding: 16px 0 40px;
  position: sticky;
  top: 0;
  max-height: 100vh;
  overflow-y: auto;
  align-self: flex-start;
}
.gsb-section { margin-bottom: 4px; }
.gsb-label {
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .6px; color: var(--text-3);
  padding: 10px 14px 4px;
}
.gsb-item {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px; font-size: .87rem; color: var(--text-2);
  text-decoration: none; transition: var(--transition);
  white-space: nowrap;
}
.gsb-item:hover { background: var(--bg); color: var(--text); text-decoration: none; }
.gsb-item.active { background: var(--blue-light); color: var(--blue-2); font-weight: 600; }
.gsb-item.gsb-sub { padding-left: 28px; font-size: .82rem; }
.gsb-dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.gsb-name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
.gsb-count {
  font-size: .7rem; color: var(--text-3);
  background: var(--bg); padding: 1px 5px; border-radius: 99px; flex-shrink: 0;
}
/* Akkordeon Ordner */
.gsb-section-head {
  display:flex; align-items:center; justify-content:space-between;
  padding: 10px 14px 4px;
}
.gsb-section-head .gsb-label { padding:0; }
.gsb-add-btn {
  font-size:.9rem; font-weight:700; color:var(--text-3);
  text-decoration:none; width:22px; height:22px; border-radius:6px;
  border:1.5px solid var(--border); display:flex; align-items:center;
  justify-content:center; transition:var(--transition); flex-shrink:0;
}
.gsb-add-btn:hover { background:var(--blue-light); border-color:var(--blue); color:var(--blue-2); text-decoration:none; }
.gsb-folder-row { display:flex; align-items:center; }
.gsb-folder-row .gsb-item { flex:1; min-width:0; }
.gsb-chevron {
  background:none; border:none; cursor:pointer;
  color:var(--text-3); font-size:.65rem; padding:0 10px 0 0;
  flex-shrink:0; line-height:1; transition:color .15s;
}
.gsb-chevron:hover { color:var(--text); }
.gsb-children { overflow:hidden; }
.gsb-toggle { display: none; }
.global-sidebar-backdrop { display: none; }

/* ── MOBILE (<= 800px) ──────────────────────────────────── */
@media (max-width: 800px) {
  .global-sidebar {
    position: fixed; top: 0; left: 0;
    width: 240px; height: 100vh; max-height: 100vh;
    transform: translateX(-100%);
    transition: transform .25s ease;
    box-shadow: 4px 0 24px rgba(0,0,0,.18);
    z-index: 200;
    padding-top: 72px;
  }
  .global-sidebar.open { transform: translateX(0); }
  .global-sidebar-backdrop.open {
    display: block; position: fixed; inset: 0; z-index: 190;
    background: rgba(0,0,0,.4);
  }
  .gsb-toggle {
    display: flex; align-items: center; justify-content: center;
    position: fixed; bottom: 22px; left: 16px; z-index: 180;
    width: 46px; height: 46px; border-radius: 50%; border: none;
    background: var(--navy); color: white; font-size: 1.2rem;
    cursor: pointer; box-shadow: 0 4px 16px rgba(0,0,0,.28);
  }
}

/* ── BUTTONS ────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 18px; border-radius: var(--radius);
  font-family: var(--font); font-size: 0.9rem; font-weight: 600;
  cursor: pointer; border: none; text-decoration: none;
  transition: var(--transition); white-space: nowrap;
  line-height: 1;
}
.btn:hover { text-decoration: none; }
.btn-primary  { background: var(--blue);  color: white; }
.btn-primary:hover { background: var(--blue-2); }
.btn-success  { background: var(--green); color: white; }
.btn-success:hover { background: #16a34a; }
.btn-danger   { background: var(--red);   color: white; }
.btn-danger:hover  { background: #dc2626; }
.btn-outline  {
  background: transparent; color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { background: var(--bg); border-color: #cbd5e1; }
.btn-lg { padding: 13px 28px; font-size: 1rem; border-radius: 12px; }
.btn-sm { padding: 6px 12px; font-size: 0.82rem; }
.btn-block { width: 100%; justify-content: center; }
.btn-icon {
  padding: 6px 8px; background: transparent;
  color: var(--text-2); border: 1px solid var(--border);
  border-radius: 6px; font-size: 0.85rem;
}
.btn-icon:hover { background: var(--bg); color: var(--text); }
.btn-icon.btn-danger { background: transparent; color: var(--red); border-color: #fecaca; }
.btn-icon.btn-danger:hover { background: #fff5f5; }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn-link { background: none; border: none; color: var(--blue); cursor: pointer; font-size: inherit; padding: 0; }

/* ── FORMS ──────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 5px; flex: 1; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-2); }
.form-group label small { font-weight: 400; color: var(--text-3); }
.form-row { display: flex; gap: 16px; flex-wrap: wrap; }
input[type=text], input[type=email], input[type=password],
input[type=file], select, textarea {
  font-family: var(--font); font-size: 0.92rem;
  padding: 9px 12px; border: 1.5px solid var(--border);
  border-radius: var(--radius); background: white; color: var(--text);
  transition: var(--transition); width: 100%;
}
input:focus, select:focus, textarea:focus {
  outline: none; border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(59,130,246,.12);
}
textarea { resize: vertical; min-height: 120px; }
.textarea-info {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 0.8rem; color: var(--text-3); margin-top: 4px;
}

/* ── ALERTS ─────────────────────────────────────────────── */
.alert {
  padding: 12px 16px; border-radius: var(--radius);
  font-size: 0.9rem; margin-bottom: 16px;
}
.alert-error   { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-success { background: #f0fdf4; color: #166534; border: 1px solid #bbf7d0; }

/* ── PANELS ─────────────────────────────────────────────── */
.card-panel {
  background: white; border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 24px;
  margin-bottom: 20px; box-shadow: var(--shadow);
}
.card-panel h2 { font-size: 1.05rem; margin-bottom: 16px; }

/* ── BADGES ─────────────────────────────────────────────── */
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 99px;
  font-size: 0.75rem; font-weight: 600;
  background: var(--blue-light); color: var(--blue-2);
}
.vis-badge { font-size: 0.78rem; font-weight: 600; }
.vis-badge.public { color: var(--teal); }
.vis-badge.private { color: var(--text-3); }

/* ── TOAST ──────────────────────────────────────────────── */
.toast {
  position: fixed; bottom: 30px; right: 30px; z-index: 9999;
  background: var(--navy); color: white; padding: 12px 20px;
  border-radius: 10px; font-size: 0.92rem; font-weight: 600;
  box-shadow: var(--shadow-lg);
  opacity: 0; transform: translateY(10px); transition: all 300ms ease;
}
.toast.show { opacity: 1; transform: none; }

/* ── HERO ───────────────────────────────────────────────── */
.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #1e3a5f 60%, #0e4f6a 100%);
  color: white; padding: 80px 20px 90px;
  text-align: center;
}
.hero-content { max-width: 680px; margin: 0 auto; }
.hero h1 { font-size: 2.4rem; line-height: 1.25; margin-bottom: 16px; font-weight: 700; }
.hero p { font-size: 1.1rem; color: #94a3b8; margin-bottom: 32px; }
.hero-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── FEATURES ───────────────────────────────────────────── */
.features { padding: 60px 20px; }
.feature-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px; max-width: 1000px; margin: 0 auto;
}
.feature-card {
  background: white; border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px 20px;
  text-align: center; box-shadow: var(--shadow);
  transition: var(--transition);
}
.feature-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.feature-icon { font-size: 2.2rem; margin-bottom: 12px; }
.feature-card h3 { font-size: 1rem; margin-bottom: 8px; }
.feature-card p { font-size: 0.88rem; color: var(--text-2); }

/* ── SETS GRID ──────────────────────────────────────────── */
.public-sets { padding: 40px 20px 60px; }
.public-sets h2, .dashboard h2 { font-size: 1.4rem; margin-bottom: 20px; }
.sets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}
.set-card {
  background: white; border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 18px;
  box-shadow: var(--shadow); transition: var(--transition);
  display: flex; flex-direction: column; gap: 10px;
  text-decoration: none; color: var(--text);
}
.set-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); border-color: #93c5fd; text-decoration: none; }
.set-card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 8px; }
.set-card-header h3 { font-size: 0.97rem; font-weight: 700; line-height: 1.3; flex: 1; }
.set-desc { font-size: 0.82rem; color: var(--text-2); }
.set-card-footer { display: flex; justify-content: space-between; font-size: 0.78rem; color: var(--text-3); margin-top: auto; }
.set-card-actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 6px; }

/* ── DASHBOARD ──────────────────────────────────────────── */
.dashboard { padding: 30px 0; }
.dashboard-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; margin-bottom: 28px; }
.dashboard-header h1 { font-size: 1.6rem; }
.dashboard-actions { display: flex; gap: 10px; }
.empty-state { text-align: center; padding: 80px 20px; }
.empty-icon { font-size: 3rem; margin-bottom: 12px; }
.empty-state h2 { font-size: 1.4rem; margin-bottom: 8px; }
.empty-state p { color: var(--text-2); margin-bottom: 24px; }
.empty-btns { display: flex; gap: 12px; justify-content: center; }

/* ── AUTH ───────────────────────────────────────────────── */
.auth-page {
  min-height: calc(100vh - 58px);
  display: flex; align-items: center; justify-content: center;
  padding: 40px 20px;
  background: linear-gradient(135deg, #f0f7ff 0%, #e8f4fd 100%);
}
.auth-box {
  background: white; border-radius: var(--radius-lg);
  padding: 40px; width: 100%; max-width: 420px;
  box-shadow: var(--shadow-lg); border: 1.5px solid var(--border);
}
.auth-logo { font-size: 2.5rem; text-align: center; margin-bottom: 8px; }
.auth-box h1 { text-align: center; font-size: 1.4rem; margin-bottom: 24px; }
.auth-form { display: flex; flex-direction: column; gap: 16px; margin-bottom: 20px; }
.auth-switch { text-align: center; font-size: 0.88rem; color: var(--text-2); }

/* ── EDITOR PAGE ────────────────────────────────────────── */
.editor-page { padding: 24px 0 60px; }
.editor-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 24px;
}
.editor-header h1 { font-size: 1.4rem; flex: 1; }

.card-editor {
  background: white; border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); margin-bottom: 16px;
  box-shadow: var(--shadow); overflow: hidden;
  transition: var(--transition);
}
.card-editor:hover { border-color: #93c5fd; }
.card-editor-inner { padding: 20px; }
.card-editor-num {
  display: flex; justify-content: space-between; align-items: center;
  margin-bottom: 14px;
}
.card-num-badge {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--navy); color: white; font-size: 0.8rem; font-weight: 700;
}
.card-sides {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: start;
}
.card-sides-divider {
  font-size: 1.2rem; color: var(--text-3); padding-top: 40px;
  display: flex; align-items: center;
}
.card-side { display: flex; flex-direction: column; gap: 8px; }
.card-side-label { font-size: 0.78rem; font-weight: 700; color: var(--text-3); text-transform: uppercase; letter-spacing: .5px; }

.rich-editor {
  min-height: 80px; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  background: white; font-family: var(--font); font-size: 0.95rem;
  transition: var(--transition); outline: none; line-height: 1.5;
}
.rich-editor:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(59,130,246,.1); }
.rich-editor:empty::before {
  content: attr(data-placeholder); color: var(--text-3); pointer-events: none;
}

.card-side-tools { display: flex; gap: 4px; flex-wrap: wrap; }

.card-image-preview { margin-top: 4px; }
.card-image-preview img {
  max-width: 100%; max-height: 160px; border-radius: 6px;
  border: 1px solid var(--border); object-fit: contain; display: block;
}
.add-card-area { margin-top: 8px; }

/* ── STUDY PAGE ─────────────────────────────────────────── */
.study-page { max-width: 820px; margin: 0 auto; padding: 24px 20px 60px; }
.study-header {
  display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-bottom: 20px;
}
.study-title { flex: 1; }
.study-title h1 { font-size: 1.3rem; }
.study-header-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.study-progress-bar {
  display: flex; align-items: center; gap: 12px; margin-bottom: 24px;
}
.progress-track {
  flex: 1; height: 8px; background: var(--border);
  border-radius: 99px; overflow: hidden;
}
.progress-fill {
  height: 100%; background: var(--green);
  border-radius: 99px; transition: width 400ms ease;
}
.flashcard-area { }
.flashcard-counter { text-align: center; font-size: 0.85rem; color: var(--text-3); margin-bottom: 14px; }

.flashcard {
  perspective: 1200px; cursor: pointer; user-select: none;
  margin: 0 auto 20px; max-width: 680px;
}
.flashcard-inner {
  position: relative; width: 100%; height: 320px;
  transform-style: preserve-3d; transition: transform 500ms cubic-bezier(.4,0,.2,1);
  border-radius: var(--radius-lg);
}
.flashcard-inner.flipped { transform: rotateY(180deg); }
.flashcard-front, .flashcard-back {
  position: absolute; inset: 0;
  backface-visibility: hidden; -webkit-backface-visibility: hidden;
  border-radius: var(--radius-lg); overflow: hidden;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 32px; gap: 14px;
  box-shadow: var(--shadow-lg);
}
.flashcard-front {
  background: white; border: 2px solid var(--border);
}
.flashcard-back {
  background: linear-gradient(135deg, var(--navy) 0%, #1e3a5f 100%);
  color: white; border: 2px solid var(--navy-3);
  transform: rotateY(180deg);
}
.flashcard-content { font-size: 1.3rem; font-weight: 600; text-align: center; line-height: 1.4; }
.flashcard-back .flashcard-content { color: white; }
.flashcard-img-wrap img { max-height: 160px; max-width: 100%; object-fit: contain; border-radius: 8px; }
.flashcard-hint { text-align: center; font-size: 0.78rem; color: var(--text-3); margin-top: 8px; }
.flashcard-answer-btns { display: flex; gap: 16px; justify-content: center; margin-bottom: 16px; }
.flashcard-nav { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-top: 8px; }
.nav-dots { display: flex; gap: 6px; align-items: center; flex-wrap: wrap; justify-content: center; }
.nav-dot {
  width: 8px; height: 8px; border-radius: 50%; background: var(--border);
  cursor: pointer; transition: var(--transition); border: none;
}
.nav-dot.active { background: var(--blue); width: 22px; border-radius: 4px; }
.nav-dot:hover { background: #93c5fd; }
.study-stats {
  display: flex; justify-content: center; gap: 24px; margin-top: 24px;
  padding: 18px; background: white; border-radius: var(--radius-lg);
  border: 1.5px solid var(--border);
}
.stat-item { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.stat-item span { font-size: 1.6rem; font-weight: 700; }
.stat-item small { font-size: 0.75rem; color: var(--text-3); }
.stat-item.correct span { color: #16a34a; }
.stat-item.incorrect span { color: #dc2626; }
.stat-item.mastered span { color: #d97706; }
.study-complete { text-align: center; padding: 60px 20px; }
.complete-icon { font-size: 3.5rem; margin-bottom: 12px; }
.study-complete h2 { font-size: 1.8rem; margin-bottom: 20px; }
.complete-stats { display: flex; gap: 32px; justify-content: center; font-size: 1.2rem; font-weight: 700; margin-bottom: 28px; }
.complete-btns { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }

/* ── IMPORT PAGE ────────────────────────────────────────── */
.import-page { padding: 30px 0 60px; }
.import-header { display: flex; align-items: center; gap: 14px; margin-bottom: 24px; }
.import-header h1 { font-size: 1.4rem; }
.import-card {
  background: white; border: 1.5px solid var(--border);
  border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow);
}
.import-instructions {
  background: var(--blue-light); border-radius: var(--radius);
  padding: 16px 20px; margin-bottom: 24px;
  border-left: 4px solid var(--blue);
}
.import-instructions h3 { font-size: 0.92rem; margin-bottom: 8px; color: var(--blue-2); }
.import-instructions ol { padding-left: 18px; font-size: 0.88rem; color: var(--text); display: flex; flex-direction: column; gap: 4px; }
.info-note { font-size: 0.82rem; color: var(--text-2); margin-top: 8px; }
.import-card .form-group, .import-card .form-row { margin-bottom: 16px; }

/* ── PROFILE PAGE ───────────────────────────────────────── */
.profile-page { padding: 30px 0 60px; }
.profile-page h1 { font-size: 1.5rem; margin-bottom: 24px; }

/* ── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  background: var(--navy); color: #475569;
  padding: 18px 20px; margin-top: auto;
}
.footer-inner { max-width: 1100px; margin: 0 auto; display: flex; gap: 10px; font-size: 0.82rem; }
.footer-inner a { color: #64748b; }
.footer-inner a:hover { color: #94a3b8; }
.footer-sep { color: #334155; }

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 800px) {
  /* Navbar */
  .nav-links { display: none; flex-direction: column; gap: 2px; position: absolute; top: 58px; left: 0; right: 0; background: var(--navy); padding: 12px 16px 16px; z-index: 199; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  /* Dashboard sets grid */
  .sets-grid { grid-template-columns: 1fr 1fr !important; gap: 12px !important; }

  /* Edit set */
  .edit-set-page .container { padding: 12px !important; }
  .set-meta-grid { grid-template-columns: 1fr !important; }
  .card-sides { grid-template-columns: 1fr !important; }
  .card-sides-divider { display: none; }

  /* Study */
  .flashcard-inner { height: 260px; }
  .flashcard-content { font-size: 1.1rem; }
  .study-header-actions { gap: 4px; }

  /* General */
  .form-row { flex-direction: column; }
  .hero h1 { font-size: 1.6rem; }
  .dashboard-header { flex-direction: column; align-items: flex-start; }
  .dashboard-actions { width: 100%; }
  .dashboard-actions .btn { flex: 1; justify-content: center; }
  .container { padding-left: 12px !important; padding-right: 12px !important; }
  .import-page .container { padding: 12px; }

  /* Bottom padding for toggle button */
  .main-content { padding-bottom: 70px; }
}

@media (max-width: 480px) {
  .sets-grid { grid-template-columns: 1fr !important; }
  .set-card-actions { flex-wrap: wrap; gap: 6px; }
}

/* ── COLOR PICKER / PREVIEW ─────────────────────────────── */
.color-row { display:flex; align-items:center; gap:10px; }
.color-none-toggle { display:flex; align-items:center; gap:6px; font-size:.85rem; color:var(--text-2); cursor:pointer; }
.color-pos-btns { display:flex; gap:6px; flex-wrap:wrap; }
.pos-btn {
  padding:5px 12px; border:1.5px solid var(--border); border-radius:6px;
  background:white; cursor:pointer; font-size:.82rem; font-family:var(--font);
  transition:var(--transition);
}
.pos-btn.active { background:var(--navy); color:white; border-color:var(--navy); }
.card-preview-mini {
  width:120px; height:80px; border:1.5px solid var(--border);
  border-radius:8px; position:relative; display:flex;
  flex-direction:column; overflow:hidden; background:white;
  font-size:.6rem;
}
.cp-header { padding:3px 6px; color:var(--text-3); border-bottom:1px solid var(--border); min-height:14px; }
.cp-body   { flex:1; display:flex; align-items:center; justify-content:center; font-size:.65rem; color:var(--text-2); }
.cp-footer { padding:3px 6px; color:var(--text-3); border-top:1px solid var(--border); min-height:14px; }

/* ── FLASHCARD HEADER/FOOTER ────────────────────────────── */
.flashcard-header-note, .flashcard-footer-note {
  font-size:.72rem; color:var(--text-3); text-align:center;
  padding:4px 12px;
}
.flashcard-back .flashcard-header-note,
.flashcard-back .flashcard-footer-note { color:rgba(255,255,255,.5); }

/* Farbbalken auf Karteikarte */
.flashcard-front.bar-left   { border-left:5px solid var(--bar-color) !important; }
.flashcard-front.bar-right  { border-right:5px solid var(--bar-color) !important; }
.flashcard-front.bar-top    { border-top:5px solid var(--bar-color) !important; }
.flashcard-front.bar-bottom { border-bottom:5px solid var(--bar-color) !important; }
.flashcard-back.bar-left    { border-left:5px solid var(--bar-color) !important; }
.flashcard-back.bar-right   { border-right:5px solid var(--bar-color) !important; }
.flashcard-back.bar-top     { border-top:5px solid var(--bar-color) !important; }
.flashcard-back.bar-bottom  { border-bottom:5px solid var(--bar-color) !important; }