/* ============================================================
   LERNINSEL BREMEN — Design System
   Tropisches Insel-Abenteuer für Kinder der Klassen 1-4
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@400;500;600;700;800&family=Nunito:wght@400;600;700;800&display=swap');

/* ─── CSS VARIABLEN ─────────────────────────────────────────── */
:root {
  /* Primärfarben (aus dem Logo) */
  --teal:       #1B4F72;
  --teal-light: #2e7bad;
  --orange:     #E8813A;
  --orange-light:#f5a066;
  --green:      #5AB347;
  --green-light:#7dd16a;
  --sky:        #6BBCDE;
  --sky-light:  #a8d8ee;
  --sand:       #F5E6C8;
  --sand-light: #FDF6E9;
  --yellow:     #F4C65A;
  --yellow-light:#fde289;

  /* Zusätzliche kindliche Farben */
  --pink:       #FF6B9D;
  --purple:     #8B5CF6;
  --lime:       #A8E063;
  --red:        #EF4444;
  --red-light:  #fca5a5;

  /* Neutral */
  --white:      #FFFFFF;
  --gray-50:    #F8FAFC;
  --gray-100:   #F1F5F9;
  --gray-200:   #E2E8F0;
  --gray-300:   #CBD5E1;
  --gray-500:   #64748B;
  --gray-700:   #334155;
  --gray-900:   #0F172A;

  /* Semantisch */
  --success:    #22C55E;
  --error:      #EF4444;
  --warning:    #F59E0B;
  --info:       #3B82F6;

  /* Typografie */
  --font-display: 'Baloo 2', cursive;
  --font-body:    'Nunito', sans-serif;

  /* Abstände */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Radien */
  --radius-sm:  8px;
  --radius-md:  16px;
  --radius-lg:  24px;
  --radius-xl:  40px;
  --radius-full:9999px;

  /* Schatten */
  --shadow-sm:  0 2px 8px rgba(27,79,114,0.10);
  --shadow-md:  0 4px 20px rgba(27,79,114,0.15);
  --shadow-lg:  0 8px 40px rgba(27,79,114,0.20);
  --shadow-xl:  0 16px 60px rgba(27,79,114,0.25);
  --shadow-orange: 0 4px 20px rgba(232,129,58,0.35);
  --shadow-green:  0 4px 20px rgba(90,179,71,0.35);

  /* Transitionen */
  --transition: 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 0.15s ease;
  --transition-slow: 0.4s ease;
}

/* ─── RESET & BASE ──────────────────────────────────────────── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--sand-light);
  color: var(--gray-700);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a  { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-body); border: none; outline: none; }
input, select, textarea {
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
}

/* ─── TYPOGRAFIE ─────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.2;
  color: var(--teal);
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.5rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.8rem); }
h4 { font-size: clamp(1rem, 2vw, 1.4rem); }

p { font-size: 1.05rem; }

.text-orange { color: var(--orange); }
.text-green  { color: var(--green); }
.text-teal   { color: var(--teal); }
.text-white  { color: var(--white); }
.text-pink   { color: var(--pink); }
.text-purple { color: var(--purple); }
.text-center { text-align: center; }

/* ─── LAYOUT ─────────────────────────────────────────────────── */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-sm {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-6); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

/* ─── NAVIGATION ─────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 3px solid var(--sand);
  padding: var(--space-3) 0;
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.navbar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar-logo img {
  height: 48px;
  width: auto;
}

.navbar-logo-text {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--teal);
  line-height: 1.1;
}

.navbar-logo-text span {
  display: block;
  font-size: 0.8rem;
  color: var(--orange);
  font-weight: 600;
}

.navbar-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.nav-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1rem;
  color: var(--teal);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link:hover, .nav-link.active {
  background: var(--sand);
  color: var(--orange);
}

.navbar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.user-stars {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--yellow-light);
  border: 2px solid var(--yellow);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal);
  font-size: 0.95rem;
}

.user-stars .star-icon { color: var(--yellow); font-size: 1.1rem; }

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--orange), var(--yellow));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  color: white;
  font-size: 1.1rem;
  border: 3px solid var(--white);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

/* ─── BUTTONS ────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  transition: all var(--transition);
  border: 3px solid transparent;
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background 0.15s ease;
}

.btn:hover::after {
  background: rgba(255,255,255,0.15);
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: linear-gradient(135deg, var(--orange), #d4692a);
  color: var(--white);
  box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(232,129,58,0.45);
}

.btn-teal {
  background: linear-gradient(135deg, var(--teal), var(--teal-light));
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-teal:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-green {
  background: linear-gradient(135deg, var(--green), var(--green-light));
  color: var(--white);
  box-shadow: var(--shadow-green);
}

.btn-green:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(90,179,71,0.45);
}

.btn-outline {
  background: transparent;
  border-color: var(--teal);
  color: var(--teal);
}

.btn-outline:hover {
  background: var(--teal);
  color: var(--white);
}

.btn-white {
  background: var(--white);
  color: var(--teal);
  box-shadow: var(--shadow-md);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-sm {
  font-size: 0.9rem;
  padding: var(--space-2) var(--space-4);
}

.btn-lg {
  font-size: 1.2rem;
  padding: var(--space-4) var(--space-8);
}

.btn-xl {
  font-size: 1.4rem;
  padding: var(--space-5) var(--space-10);
  border-radius: var(--radius-lg);
}

.btn-paypal {
  background: linear-gradient(135deg, #003087, #009cde);
  color: white;
  font-size: 1.1rem;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(0,48,135,0.3);
}

.btn-paypal:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(0,48,135,0.4);
}

/* ─── CARDS ──────────────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.card-colorful {
  border: 3px solid var(--sand);
  background: linear-gradient(135deg, var(--white) 60%, var(--sand-light));
}

.card-teal {
  background: linear-gradient(135deg, var(--teal), var(--teal-light));
  color: white;
}

.card-orange {
  background: linear-gradient(135deg, var(--orange), var(--orange-light));
  color: white;
}

.card-green {
  background: linear-gradient(135deg, var(--green), var(--green-light));
  color: white;
}

/* ─── SUBJECT CARDS ──────────────────────────────────────────── */
.subject-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: all var(--transition);
  border: 4px solid transparent;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.subject-card::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 200px;
  height: 200px;
  border-radius: 50%;
  opacity: 0.08;
  transition: transform 0.4s ease;
}

.subject-card.mathe::before  { background: var(--orange); }
.subject-card.deutsch::before { background: var(--teal); }

.subject-card:hover {
  transform: translateY(-6px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.subject-card.mathe:hover   { border-color: var(--orange); }
.subject-card.deutsch:hover { border-color: var(--teal); }

.subject-card:hover::before {
  transform: scale(1.5);
}

.subject-icon {
  font-size: 4rem;
  margin-bottom: var(--space-4);
  display: block;
  animation: float 3s ease-in-out infinite;
}

.subject-card:nth-child(2) .subject-icon {
  animation-delay: 1.5s;
}

/* ─── FORTSCHRITTSBALKEN ─────────────────────────────────────── */
.progress-wrap {
  background: var(--gray-100);
  border-radius: var(--radius-full);
  height: 16px;
  overflow: hidden;
  border: 2px solid var(--gray-200);
}

.progress-bar {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--green), var(--lime));
  transition: width 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 2s infinite;
}

.progress-bar.orange {
  background: linear-gradient(90deg, var(--orange), var(--yellow));
}

.progress-bar.teal {
  background: linear-gradient(90deg, var(--teal), var(--sky));
}

/* ─── STERNE ─────────────────────────────────────────────────── */
.stars-display {
  display: flex;
  gap: var(--space-1);
}

.star {
  font-size: 1.5rem;
  transition: all var(--transition);
}

.star.filled  { color: var(--yellow); filter: drop-shadow(0 2px 4px rgba(244,198,90,0.5)); }
.star.empty   { color: var(--gray-300); }
.star.animate { animation: starPop 0.3s cubic-bezier(0.34, 1.56, 0.64, 1) forwards; }

/* ─── ABZEICHEN / BADGES ─────────────────────────────────────── */
.badge-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: var(--space-4);
}

.badge {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  border: 3px solid var(--gray-200);
  transition: all var(--transition);
  text-align: center;
}

.badge.earned {
  border-color: var(--yellow);
  background: linear-gradient(135deg, #fffbeb, var(--white));
  box-shadow: 0 4px 16px rgba(244,198,90,0.3);
}

.badge.earned:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px rgba(244,198,90,0.4);
}

.badge-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.badge.locked { opacity: 0.4; filter: grayscale(1); }
.badge-name {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--teal);
  font-family: var(--font-display);
}

/* ─── AUFGABEN / TASK COMPONENTS ─────────────────────────────── */
.task-container {
  max-width: 760px;
  margin: 0 auto;
}

.task-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
}

.task-counter {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--gray-500);
  font-size: 0.95rem;
}

.task-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  box-shadow: var(--shadow-lg);
  border: 4px solid var(--sand);
  margin-bottom: var(--space-6);
  position: relative;
  min-height: 320px;
}

.task-frage {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 800;
  color: var(--teal);
  text-align: center;
  margin-bottom: var(--space-8);
  line-height: 1.3;
}

.task-klassen-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--teal);
  color: white;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

/* Multiple Choice */
.mc-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.mc-option {
  background: var(--sand-light);
  border: 3px solid var(--sand);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--teal);
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.mc-option:hover {
  border-color: var(--orange);
  background: var(--orange);
  color: white;
  transform: scale(1.03);
  box-shadow: var(--shadow-orange);
}

.mc-option.correct {
  border-color: var(--green);
  background: var(--green);
  color: white;
  animation: correctBounce 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.mc-option.wrong {
  border-color: var(--red);
  background: var(--red);
  color: white;
  animation: shake 0.4s ease;
}

.mc-option.disabled {
  pointer-events: none;
  opacity: 0.7;
}

/* Eingabe */
.eingabe-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.eingabe-field {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  text-align: center;
  color: var(--teal);
  background: var(--sand-light);
  border: 4px solid var(--sand);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-8);
  width: 100%;
  max-width: 300px;
  transition: border-color var(--transition-fast);
}

.eingabe-field:focus {
  border-color: var(--orange);
  background: white;
}

.eingabe-field.correct { border-color: var(--green); background: #f0fdf4; }
.eingabe-field.wrong   { border-color: var(--red); background: #fff1f2; animation: shake 0.4s ease; }

/* Lückentext */
.luecke-satz {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--teal);
  text-align: center;
  margin-bottom: var(--space-6);
  line-height: 2;
}

.luecke-input {
  display: inline-block;
  min-width: 120px;
  border-bottom: 4px solid var(--orange);
  padding: 0 var(--space-3);
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  color: var(--teal);
  background: transparent;
  border-top: none;
  border-left: none;
  border-right: none;
  outline: none;
}

/* Drag & Drop */
.dragdrop-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  align-items: center;
}

.drag-items {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  padding: var(--space-4);
  background: var(--sand-light);
  border-radius: var(--radius-lg);
  border: 3px dashed var(--sand);
  min-height: 70px;
  width: 100%;
}

.drag-item {
  background: white;
  border: 3px solid var(--sky);
  border-radius: var(--radius-md);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--teal);
  cursor: grab;
  user-select: none;
  transition: all var(--transition);
  box-shadow: var(--shadow-sm);
}

.drag-item:hover   { border-color: var(--orange); transform: scale(1.05); }
.drag-item.dragging { opacity: 0.5; cursor: grabbing; }
.drag-item.placed  { border-color: var(--green); background: #f0fdf4; }

.drop-zone {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: center;
  padding: var(--space-4);
  background: white;
  border-radius: var(--radius-lg);
  border: 3px dashed var(--gray-300);
  min-height: 70px;
  width: 100%;
  transition: border-color var(--transition-fast);
}

.drop-zone.drag-over { border-color: var(--orange); background: #fff8f5; }
.drop-zone.correct   { border-color: var(--green); background: #f0fdf4; }
.drop-zone.wrong     { border-color: var(--red); background: #fff1f2; animation: shake 0.4s ease; }

/* ─── FEEDBACK OVERLAY ───────────────────────────────────────── */
.feedback-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.feedback-overlay.show {
  opacity: 1;
  pointer-events: all;
}

.feedback-box {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-12);
  box-shadow: var(--shadow-xl);
  text-align: center;
  transform: scale(0.8);
  transition: transform var(--transition);
  border: 6px solid var(--green);
  max-width: 500px;
  width: 90%;
}

.feedback-overlay.show .feedback-box {
  transform: scale(1);
}

.feedback-box.wrong {
  border-color: var(--red);
}

.feedback-emoji {
  font-size: 5rem;
  display: block;
  margin-bottom: var(--space-4);
  animation: bounceIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.feedback-text {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--teal);
  margin-bottom: var(--space-2);
}

.feedback-subtext {
  color: var(--gray-500);
  font-size: 1.1rem;
}

/* ─── KONFETTI ───────────────────────────────────────────────── */
.confetti-piece {
  position: fixed;
  width: 12px;
  height: 12px;
  top: -20px;
  border-radius: 2px;
  animation: confettiFall linear forwards;
  pointer-events: none;
  z-index: 3000;
}

/* ─── HERO SECTION ───────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(160deg,
    var(--sky-light) 0%,
    #c8e8f8 30%,
    var(--sand-light) 70%,
    var(--sand) 100%
  );
  z-index: 0;
}

/* Wellen-Hintergrund */
.wave-bottom {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: center;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.hero-text { max-width: 600px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--orange);
  color: white;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-5);
  animation: slideInLeft 0.6s ease forwards;
}

.hero-title {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  line-height: 1.05;
  margin-bottom: var(--space-5);
  animation: slideInLeft 0.6s ease 0.1s both;
}

.hero-title span { color: var(--orange); }

.hero-desc {
  font-size: 1.2rem;
  color: var(--gray-700);
  margin-bottom: var(--space-8);
  animation: slideInLeft 0.6s ease 0.2s both;
}

.hero-actions {
  display: flex;
  gap: var(--space-4);
  flex-wrap: wrap;
  animation: slideInLeft 0.6s ease 0.3s both;
}

.hero-stats {
  display: flex;
  gap: var(--space-8);
  margin-top: var(--space-8);
  animation: slideInLeft 0.6s ease 0.4s both;
}

.hero-stat-number {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 800;
  color: var(--teal);
}

.hero-stat-label {
  font-size: 0.9rem;
  color: var(--gray-500);
  font-weight: 600;
}

.hero-visual {
  display: flex;
  justify-content: center;
  animation: float 4s ease-in-out infinite;
}

.hero-logo {
  width: min(400px, 90%);
  filter: drop-shadow(0 20px 40px rgba(27,79,114,0.2));
}

/* ─── FEATURES SECTION ───────────────────────────────────────── */
.features {
  padding: var(--space-20) 0;
  background: white;
  position: relative;
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-4);
}

.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto var(--space-12);
}

.feature-card {
  background: var(--sand-light);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  border: 3px solid var(--sand);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-6px);
  border-color: var(--orange);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  font-size: 3.5rem;
  margin-bottom: var(--space-4);
  display: block;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: var(--space-3);
  color: var(--teal);
}

.feature-card p {
  color: var(--gray-500);
  font-size: 0.95rem;
}

/* ─── MODULE SECTION ─────────────────────────────────────────── */
.modules-section {
  padding: var(--space-20) 0;
  background: linear-gradient(180deg, var(--sand-light), white);
}

.module-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition);
  border: 3px solid transparent;
}

.module-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
}

.module-card-header {
  padding: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.module-card-header.mathe { background: linear-gradient(135deg, #fff8f5, #ffefdf); }
.module-card-header.deutsch { background: linear-gradient(135deg, #f0f8ff, #dbeafe); }

.module-icon { font-size: 2.5rem; }

.module-tag {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-full);
}

.module-tag.kostenlos { background: var(--green); color: white; }
.module-tag.premium   { background: var(--orange); color: white; }

.module-card-body { padding: var(--space-6); }

.module-progress-text {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gray-500);
  margin-bottom: var(--space-2);
}

/* ─── DASHBOARD ──────────────────────────────────────────────── */
.dashboard-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
  padding: calc(80px + var(--space-8)) var(--space-6) var(--space-8);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 90px;
  height: fit-content;
}

.sidebar-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  margin-bottom: var(--space-4);
}

.sidebar-user {
  text-align: center;
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--sand);
  margin-bottom: var(--space-4);
}

.sidebar-avatar {
  width: 80px;
  height: 80px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--orange), var(--yellow));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  color: white;
  font-size: 2rem;
  margin: 0 auto var(--space-3);
  border: 4px solid var(--sand);
  box-shadow: var(--shadow-md);
}

.sidebar-name {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--teal);
}

.sidebar-class {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 600;
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal);
  transition: all var(--transition-fast);
  font-size: 1rem;
}

.sidebar-nav-link:hover, .sidebar-nav-link.active {
  background: var(--sand);
  color: var(--orange);
}

.sidebar-nav-link span:first-child { font-size: 1.3rem; }

/* ─── LEVEL / XP SYSTEM ──────────────────────────────────────── */
.level-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: linear-gradient(135deg, var(--yellow), var(--orange));
  color: white;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-orange);
}

.xp-bar-wrap {
  margin-top: var(--space-3);
}

.xp-text {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--gray-500);
  margin-bottom: var(--space-1);
}

/* ─── STAT CARDS ─────────────────────────────────────────────── */
.stat-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-sm);
  border: 3px solid var(--sand);
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.stat-icon {
  font-size: 2.5rem;
  background: var(--sand-light);
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 2px solid var(--sand);
  flex-shrink: 0;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--teal);
  line-height: 1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 600;
}

/* ─── RANGLISTE ──────────────────────────────────────────────── */
.leaderboard-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-lg);
  background: white;
  border: 3px solid var(--sand);
  margin-bottom: var(--space-3);
  transition: all var(--transition-fast);
}

.leaderboard-row:hover {
  transform: translateX(4px);
  border-color: var(--orange);
  box-shadow: var(--shadow-sm);
}

.leaderboard-rank {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.3rem;
  color: var(--gray-500);
  min-width: 36px;
  text-align: center;
}

.leaderboard-rank.gold   { color: #F59E0B; }
.leaderboard-rank.silver { color: #94A3B8; }
.leaderboard-rank.bronze { color: #B45309; }

.leaderboard-name {
  flex: 1;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal);
}

.leaderboard-stars {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--teal);
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

/* ─── FORMS ──────────────────────────────────────────────────── */
.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal);
  margin-bottom: var(--space-2);
  font-size: 1rem;
}

.form-input {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  border: 3px solid var(--sand);
  border-radius: var(--radius-lg);
  background: var(--white);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-700);
  transition: border-color var(--transition-fast);
}

.form-input:focus {
  border-color: var(--orange);
}

.form-input.error { border-color: var(--red); }

.form-select {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  border: 3px solid var(--sand);
  border-radius: var(--radius-lg);
  background: var(--white);
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-700);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%231B4F72' stroke-width='3' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.form-select:focus { border-color: var(--orange); }

.error-msg {
  font-size: 0.85rem;
  color: var(--red);
  margin-top: var(--space-2);
  font-weight: 600;
  display: none;
}

.error-msg.show { display: block; }

/* ─── AUTH PAGES ─────────────────────────────────────────────── */
.auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, var(--sky-light), var(--sand-light));
  padding: var(--space-8) var(--space-4);
  position: relative;
  overflow: hidden;
}

.auth-bg-shapes {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.auth-shape {
  position: absolute;
  border-radius: 50%;
  opacity: 0.15;
}

.auth-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-10) var(--space-10);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 480px;
  position: relative;
  z-index: 1;
  border: 4px solid var(--sand);
}

.auth-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: var(--space-8);
}

.auth-logo img {
  height: 80px;
  margin-bottom: var(--space-3);
}

.auth-title {
  font-size: 1.8rem;
  text-align: center;
  color: var(--teal);
}

.auth-subtitle {
  text-align: center;
  color: var(--gray-500);
  font-size: 0.95rem;
  margin-bottom: var(--space-6);
}

.auth-divider {
  text-align: center;
  color: var(--gray-400);
  font-size: 0.9rem;
  font-weight: 600;
  margin: var(--space-5) 0;
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--sand);
}

.auth-link {
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray-500);
  margin-top: var(--space-5);
}

.auth-link a {
  color: var(--orange);
  font-weight: 700;
}

/* ─── MODAL ──────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.6);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
  pointer-events: none;
}

.modal-overlay.open {
  opacity: 1;
  pointer-events: all;
}

.modal {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  max-width: 500px;
  width: 90%;
  box-shadow: var(--shadow-xl);
  transform: scale(0.9) translateY(20px);
  transition: transform var(--transition);
  border: 4px solid var(--sand);
}

.modal-overlay.open .modal {
  transform: scale(1) translateY(0);
}

.modal-header {
  text-align: center;
  margin-bottom: var(--space-6);
}

.modal-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: var(--space-3);
}

/* ─── TOAST NOTIFICATIONS ────────────────────────────────────── */
.toast-container {
  position: fixed;
  top: 90px;
  right: var(--space-6);
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 280px;
  border-left: 5px solid var(--green);
  transform: translateX(120%);
  transition: transform var(--transition);
  font-family: var(--font-display);
  font-weight: 700;
}

.toast.show { transform: translateX(0); }
.toast.success { border-color: var(--green); }
.toast.error   { border-color: var(--red); }
.toast.info    { border-color: var(--sky); }

/* ─── ANIMATIONEN ────────────────────────────────────────────── */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50%       { transform: translateY(-16px); }
}

@keyframes floatSlow {
  0%, 100% { transform: translateY(0px) rotate(0deg); }
  50%       { transform: translateY(-10px) rotate(3deg); }
}

@keyframes bounceIn {
  0%   { transform: scale(0); opacity: 0; }
  50%  { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}

@keyframes correctBounce {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.08); }
  100% { transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%  { transform: translateX(-6px); }
  40%  { transform: translateX(6px); }
  60%  { transform: translateX(-4px); }
  80%  { transform: translateX(4px); }
}

@keyframes starPop {
  0%   { transform: scale(0) rotate(-30deg); }
  70%  { transform: scale(1.3) rotate(10deg); }
  100% { transform: scale(1) rotate(0deg); }
}

@keyframes slideInLeft {
  from { opacity: 0; transform: translateX(-30px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes slideInUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes confettiFall {
  0%   { transform: translateY(-20px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(110vh) rotate(720deg); opacity: 0; }
}

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%       { transform: scale(1.05); }
}

@keyframes wiggle {
  0%, 100% { transform: rotate(0deg); }
  25%  { transform: rotate(-5deg); }
  75%  { transform: rotate(5deg); }
}

.animate-float     { animation: float 3s ease-in-out infinite; }
.animate-pulse     { animation: pulse 2s ease-in-out infinite; }
.animate-wiggle    { animation: wiggle 1s ease-in-out infinite; }
.animate-fadeIn    { animation: fadeIn 0.4s ease forwards; }
.animate-slideUp   { animation: slideInUp 0.5s ease forwards; }

/* ─── SCROLL ANIMATIONS ──────────────────────────────────────── */
.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ─── FOOTER ─────────────────────────────────────────────────── */
.footer {
  background: var(--teal);
  color: rgba(255,255,255,0.8);
  padding: var(--space-12) 0 var(--space-6);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}

.footer-brand img { height: 50px; margin-bottom: var(--space-4); }
.footer-brand p   { font-size: 0.9rem; line-height: 1.7; }

.footer-title {
  font-family: var(--font-display);
  font-weight: 800;
  color: white;
  font-size: 1rem;
  margin-bottom: var(--space-4);
}

.footer-link {
  display: block;
  color: rgba(255,255,255,0.7);
  font-size: 0.9rem;
  padding: var(--space-1) 0;
  transition: color var(--transition-fast);
}

.footer-link:hover { color: var(--orange); }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
}

/* ─── PROFIL ─────────────────────────────────────────────────── */
.profile-hero {
  background: linear-gradient(135deg, var(--teal), var(--teal-light));
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  color: white;
  display: flex;
  align-items: center;
  gap: var(--space-8);
  margin-bottom: var(--space-6);
  position: relative;
  overflow: hidden;
}

.profile-hero::after {
  content: '🏝️';
  position: absolute;
  right: var(--space-8);
  bottom: -10px;
  font-size: 8rem;
  opacity: 0.15;
}

.profile-avatar-lg {
  width: 120px;
  height: 120px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--orange), var(--yellow));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  color: white;
  font-size: 3rem;
  border: 5px solid rgba(255,255,255,0.4);
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}

.profile-info h2 {
  color: white;
  font-size: 2rem;
  margin-bottom: var(--space-2);
}

.profile-class-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(255,255,255,0.2);
  color: white;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.9rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-4);
}

.profile-stats-mini {
  display: flex;
  gap: var(--space-6);
}

.profile-stat-mini {
  text-align: center;
}

.profile-stat-mini .num {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--yellow);
}

.profile-stat-mini .lbl {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  font-weight: 600;
}

/* ─── ELTERN-DASHBOARD ───────────────────────────────────────── */
.chart-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.chart-bar-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.chart-bar-label {
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal);
  min-width: 80px;
  font-size: 0.9rem;
}

.chart-bar-outer {
  flex: 1;
  background: var(--gray-100);
  border-radius: var(--radius-full);
  height: 24px;
  overflow: hidden;
}

.chart-bar-inner {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--teal), var(--sky));
  transition: width 1s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.chart-bar-inner.orange {
  background: linear-gradient(90deg, var(--orange), var(--yellow));
}

.chart-bar-val {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--teal);
  min-width: 36px;
  text-align: right;
  font-size: 0.9rem;
}

/* ─── FREISCHALTEN MODAL ─────────────────────────────────────── */
.unlock-card {
  background: linear-gradient(135deg, #fff8f5, white);
  border: 4px solid var(--orange);
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  text-align: center;
  max-width: 480px;
  margin: 0 auto;
}

.unlock-price {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 800;
  color: var(--orange);
  line-height: 1;
  margin: var(--space-4) 0;
}

.unlock-features {
  text-align: left;
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  margin: var(--space-6) 0;
  border: 2px solid var(--sand);
}

.unlock-feature-row {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) 0;
  font-weight: 700;
  color: var(--teal);
}

.unlock-feature-row span:first-child { font-size: 1.3rem; }

/* ─── PAGE HEADER ────────────────────────────────────────────── */
.page-header {
  background: linear-gradient(135deg, var(--teal), var(--teal-light));
  padding: calc(80px + var(--space-10)) 0 var(--space-10);
  color: white;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: var(--sand-light);
  clip-path: ellipse(55% 100% at 50% 100%);
}

.page-header h1 { color: white; margin-bottom: var(--space-3); }
.page-header p  { color: rgba(255,255,255,0.8); font-size: 1.1rem; }

/* ─── HAUPTINHALT PADDING ────────────────────────────────────── */
.main-content {
  padding: var(--space-10) 0;
}

.main-content-padded {
  padding: calc(80px + var(--space-8)) var(--space-6) var(--space-8);
  max-width: 1200px;
  margin: 0 auto;
}

/* ─── SONDERFÄLLE: AUFGABEN-SEITE ────────────────────────────── */
.aufgabe-page {
  min-height: 100vh;
  background: linear-gradient(160deg, var(--sky-light), var(--sand-light));
  padding: calc(80px + var(--space-8)) var(--space-6) var(--space-8);
}

.aufgabe-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-6);
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-md);
}

.streak-counter {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--orange);
  font-size: 1.1rem;
}

.streak-counter .fire { font-size: 1.5rem; }

.hint-btn {
  background: var(--sky-light);
  border: 2px solid var(--sky);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--teal);
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hint-btn:hover { background: var(--sky); color: white; }

.hint-box {
  background: #f0f9ff;
  border: 3px solid var(--sky);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-4);
  font-weight: 600;
  color: var(--teal);
  display: none;
}

.hint-box.show { display: block; animation: slideInUp 0.3s ease; }

/* ─── KLASSEN-SELECTOR ───────────────────────────────────────── */
.klassen-tabs {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
  flex-wrap: wrap;
}

.klassen-tab {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-full);
  border: 3px solid var(--sand);
  background: white;
  color: var(--teal);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.klassen-tab:hover, .klassen-tab.active {
  background: var(--orange);
  border-color: var(--orange);
  color: white;
  box-shadow: var(--shadow-orange);
}

/* ─── RESPONSIVE ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .dashboard-layout {
    grid-template-columns: 240px 1fr;
  }
}

@media (max-width: 768px) {
  .grid-3  { grid-template-columns: 1fr; }
  .grid-4  { grid-template-columns: repeat(2, 1fr); }
  .grid-2  { grid-template-columns: 1fr; }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-visual { display: none; }
  .hero-actions { justify-content: center; }
  .hero-stats   { justify-content: center; }

  .dashboard-layout {
    grid-template-columns: 1fr;
  }

  .sidebar { position: static; }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-bottom { flex-direction: column; gap: var(--space-3); }

  .profile-hero {
    flex-direction: column;
    text-align: center;
  }

  .profile-stats-mini { justify-content: center; }

  .mc-options { grid-template-columns: 1fr; }

  .navbar-nav { display: none; }

  .auth-card { padding: var(--space-6); }

  .task-card { padding: var(--space-6); }
}

@media (max-width: 480px) {
  .grid-4 { grid-template-columns: 1fr; }
  .klassen-tabs { gap: var(--space-2); }
  .klassen-tab { padding: var(--space-2) var(--space-3); font-size: 0.9rem; }
}

/* ─── UTILITY ────────────────────────────────────────────────── */
.hidden   { display: none !important; }
.mt-4     { margin-top: var(--space-4); }
.mt-6     { margin-top: var(--space-6); }
.mt-8     { margin-top: var(--space-8); }
.mb-4     { margin-bottom: var(--space-4); }
.mb-6     { margin-bottom: var(--space-6); }
.mb-8     { margin-bottom: var(--space-8); }
.w-full   { width: 100%; }
.relative { position: relative; }
.overflow-hidden { overflow: hidden; }

/* Colorful scrollbar */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--sand-light); }
::-webkit-scrollbar-thumb {
  background: linear-gradient(var(--teal), var(--orange));
  border-radius: var(--radius-full);
}