/* ============ Trend Notification Card ============ */
.trend-notification-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: flex-start;
}
:root {
  /* ============ Modernisierte Palette (SaaS Blue Dark Mode) ============ */
  --primary: #3b82f6;       /* Leuchtendes Blau */
  --primary-hover: #2563eb;
  --primary-bg: rgba(59, 130, 246, 0.1);
  
  --secondary: #64748b;     /* Slate Grau */
  --secondary-bg: rgba(100, 116, 139, 0.1);

  /* Semantic Colors */
  --danger: #ef4444;        /* Rot */
  --danger-hover: #dc2626;
  --danger-bg: rgba(239, 68, 68, 0.15);
  
  --success: #10b981;       /* Grün */
  --success-bg: rgba(16, 185, 129, 0.15);
  
  --warning: #f59e0b;       /* Orange/Gelb */
  --warning-bg: rgba(245, 158, 11, 0.15);
  
  /* Background Levels */
  --bg-body: #0f172a;       /* Deep Slate */
  --bg-card: #1e293b;       /* Lighter Slate */
  --bg-input: #334155;      /* Input Fields */
  --bg-hover: #334155;      /* Hover States */
  
  /* Text & Borders */
  --text-main: #f8fafc;     /* Fast Weiß */
  --text-muted: #94a3b8;    /* Muted Text */
  --border: #334155;        /* Borders */
  
  /* Effects */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
  --radius: 12px;           /* Etwas runder für modernen Look */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 2rem;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ============ Navigation ============ */
.navbar {
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  margin-bottom: 2rem;
}

.navbar-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.025em;
  background: linear-gradient(to right, var(--text-main), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  text-decoration: none;
}

.navbar-right {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.user-info {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  background: var(--bg-card);
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
}

/* ============ Login Page ============ */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
  background: radial-gradient(circle at top right, #1e3a8a 0%, var(--bg-body) 60%);
}

.login-container {
  width: 100%;
  max-width: 420px;
}

.login-card {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border);
}

.login-card h1 {
  color: var(--text-main);
  margin-bottom: 0.5rem;
  text-align: center;
  font-weight: 700;
  font-size: 1.75rem;
}

.subtitle {
  text-align: center;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* ============ Forms (Inputs) ============ */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 1rem;
  background: var(--bg-input);
  color: var(--text-main);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
  background: #1e293b;
}

.form-group input::placeholder {
  color: rgba(148, 163, 184, 0.5);
}

/* ============ Buttons ============ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  background: var(--bg-input);
  color: var(--text-main);
  gap: 0.5rem;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: 0 4px 6px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 6px 12px rgba(59, 130, 246, 0.3);
}

.btn-secondary {
  background-color: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.btn-secondary:hover {
  background-color: var(--bg-input);
  color: var(--text-main);
  border-color: var(--text-muted);
}

.btn-danger {
  background-color: var(--danger-bg);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

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

.btn-block {
  width: 100%;
  display: flex;
}

/* ============ Dashboard Overview ============ */
.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end; /* Besser für alignment mit Stats */
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.dashboard-header h2 {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(to right, #fff, #94a3b8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-stats {
  display: flex;
  gap: 1rem;
}

.stat-box {
  background: var(--bg-card);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
  border: 1px solid var(--border);
  min-width: 120px;
}

.stat-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.stat-value {
  display: block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
}

.stat-value.danger { color: #f87171; }
.stat-value.success { color: #34d399; }

/* ============ Subjects Grid (Dashboard) ============ */
.subjects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); /* Optimiert für Mobile */
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.subject-card {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
  border: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.subject-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary);
}

/* Specific styling for cards with danger status (Deficit) */
.subject-card.status-danger {
  border-color: rgba(239, 68, 68, 0.5);
  background: linear-gradient(145deg, var(--bg-card), rgba(239, 68, 68, 0.1));
}

.subject-card.status-danger:hover {
  border-color: var(--danger);
  box-shadow: 0 10px 15px -3px rgba(239, 68, 68, 0.2), 0 4px 6px -2px rgba(239, 68, 68, 0.1);
}

.subject-card h3 {
  margin: 0 0 1rem 0;
  color: var(--text-main);
  font-size: 1.35rem;
  font-weight: 700;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

.subject-stats {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.subject-stats .stat {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}

.stat .label { color: var(--text-muted); }
.stat .value { font-weight: 600; color: var(--text-main); }
.stat .value.danger-text { color: #f87171; }

/* Status Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-danger, 
.deficit-badge { /* Added deficit-badge for compatibility */
  background-color: var(--danger-bg);
  color: #fca5a5;
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.badge-success {
  background-color: var(--success-bg);
  color: #6ee7b7;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* ============ Subject Details View (Major Fixes Here) ============ */

/* 1. Header Area */
.subject-header {
  background: linear-gradient(145deg, var(--bg-card), rgba(30, 41, 59, 0.5));
  padding: 2rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
  position: relative;
  overflow: hidden;
}

/* Subtle Glow Effect */
.subject-header::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
  height: 100%;
  background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  pointer-events: none;
}

.subject-header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.subject-header h2 {
  font-size: 2.5rem;
  margin: 0;
  color: white;
}

/* 2. Overview Stats Grid */
.subject-overview {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); /* Flexibler für Mobile */
  gap: 1rem;
}

.stat-block {
  background: rgba(15, 23, 42, 0.6);
  padding: 1.25rem;
  border-radius: var(--radius);
  text-align: center;
  border: 1px solid var(--border);
  transition: var(--transition);
}

/* Specific styling for danger stats in detail view */
.stat-block.danger {
  border-color: rgba(239, 68, 68, 0.4);
  background: rgba(239, 68, 68, 0.05);
}

.stat-block:hover {
  border-color: var(--secondary);
  background: rgba(15, 23, 42, 0.9);
}

.stat-block.danger:hover {
  border-color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

.stat-block .label {
  display: block;
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.stat-block .value {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1;
}

.stat-block.danger .value {
  color: #f87171; /* Text color for danger value */
}

/* 3. Target Planner Integration */
.target-planner {
  background: var(--bg-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  margin-bottom: 2rem;
  border-left: 4px solid var(--warning); /* Accent line */
}

.target-planner h3 {
  color: var(--text-main);
  margin-bottom: 1rem;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.input-group {
  display: flex;
  gap: 0.75rem;
}

.target-result {
  margin-top: 1rem;
  padding: 1rem;
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius);
  color: #fbbf24;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* 4. Grades Tables (The tricky part) */
.grades-section {
  display: grid;
  /* FIX: 450px war zu breit für Mobile. 300px ist sicher, auto-fit regelt den Rest */
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); 
  gap: 2rem;
  margin-bottom: 3rem;
}

.grades-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
}

.grades-category h3 {
  background: rgba(30, 41, 59, 0.5);
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 1.1rem;
  margin: 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-main);
}

.weight-badge {
  font-size: 0.75rem;
  background: var(--bg-body);
  color: var(--text-muted);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  border: 1px solid var(--border);
}

/* Scroll Wrapper für Tabellen auf Mobile */
.table-wrapper {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch; /* Smooth scroll iOS */
}

.grades-table {
  width: 100%;
  border-collapse: collapse;
  white-space: nowrap; /* Verhindert Umbruch bei kleinen Screens in der Zeile */
}

.grades-table th {
  padding: 1rem 1.5rem;
  text-align: left;
  font-weight: 600;
  color: var(--secondary);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.3);
}

.grades-table td {
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  font-size: 0.95rem;
}

.grades-table tr:last-child td {
  border-bottom: none;
}

.grades-table tr:hover td {
  background-color: rgba(255,255,255,0.02);
}

/* Note als "Badge" stylen für bessere Lesbarkeit */
.grade-badge {
  display: inline-block;
  font-weight: 700;
  color: var(--text-main);
  background: var(--bg-input);
  padding: 0.35rem 0.85rem;
  border-radius: 6px;
  min-width: 40px;
  text-align: center;
  border: 1px solid var(--border);
}

.grade-badge.good { background: rgba(16, 185, 129, 0.2); border-color: rgba(16, 185, 129, 0.3); color: #6ee7b7; }
.grade-badge.bad { background: rgba(239, 68, 68, 0.2); border-color: rgba(239, 68, 68, 0.3); color: #fca5a5; }

.category-average {
  margin-top: auto; /* Drückt den Footer nach unten wenn Grid unterschiedlich hoch */
  text-align: right;
  padding: 1.25rem 1.5rem;
  background: rgba(30, 41, 59, 0.5);
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.category-average .avg-value {
  color: var(--text-main);
  font-weight: 700;
  font-size: 1.1rem;
  margin-left: 0.5rem;
}

/* ============ Alerts & Notifications ============ */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.95rem;
  line-height: 1.5;
}

.alert-danger {
  background-color: rgba(239, 68, 68, 0.1);
  color: #fca5a5;
  border-left: 4px solid var(--danger);
}

/* ============ Responsive Utilities ============ */
@media (max-width: 768px) {
  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .header-stats {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr; /* 2 Spalten auf Mobile */
  }
  
  .stat-box { min-width: auto; }

  .navbar-content {
    flex-direction: column;
    gap: 1rem;
    align-items: stretch;
  }

  .navbar-right {
    justify-content: space-between;
    width: 100%;
  }

  /* Grades Section Mobile Fixes */
  .grades-section {
    grid-template-columns: 1fr; /* Volle Breite auf Mobile */
    gap: 1.5rem;
  }

  .subject-header {
    padding: 1.5rem;
  }
  
  .subject-header h2 {
    font-size: 1.75rem;
  }

  .subject-overview {
    grid-template-columns: 1fr 1fr; /* 2 Spalten Stats */
  }

  .input-group {
    flex-direction: column;
  }
  
  .input-group button {
    width: 100%;
  }
}

@media (max-width: 480px) {
  /* Sehr kleine Screens */
  .header-stats {
    grid-template-columns: 1fr; /* Alles untereinander */
  }
  
  .subject-overview {
    grid-template-columns: 1fr;
  }
}