:root {
  --bg: #090c14;
  --bg-secondary: #0d111c;
  --card-bg-solid: #131926;
  --card-border: rgba(148, 163, 184, 0.12);
  --text: #e7eaf1;
  --text-muted: #8a92a8;
  --accent: #3d7eff;
  --accent-light: #74a3ff;
  --accent-dark: #245ad1;
  --accent-glow: rgba(61, 126, 255, 0.35);
  --success: #22c55e;
  --warning: #f5a524;
  --danger: #f0455c;
  --radius-lg: 8px;
  --radius-md: 6px;
  --header-h: 72px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Segoe UI", -apple-system, BlinkMacSystemFont, "Inter", Roboto, Arial, sans-serif;
}

:root[data-theme="light"] {
  --bg: #f4f6fb;
  --bg-secondary: #ffffff;
  --card-bg-solid: #ffffff;
  --card-border: rgba(15, 23, 42, 0.16);
  --text: #10152a;
  --text-muted: #4c5670;
  --accent: #2158e0;
  --accent-light: #3b6fe8;
  --accent-dark: #17429f;
  --accent-glow: rgba(33, 88, 224, 0.22);
  --success: #0d6e33;
  --warning: #9a5b00;
  --danger: #c81e3a;
}

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

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.015em;
}

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

.page-title {
  font-size: 1.7rem;
  margin-bottom: 24px;
}

/* LOGIN */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.login-card {
  width: 100%;
  max-width: 380px;
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
}

.login-card h1 { font-size: 1.4rem; margin-bottom: 24px; }
.login-card label { display: block; font-size: 0.9rem; color: var(--text-muted); margin-bottom: 6px; }

.login-card input {
  width: 100%;
  padding: 11px 14px;
  margin-bottom: 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
}

.login-error {
  background: rgba(240, 69, 92, 0.12);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 6px;
  margin-bottom: 18px;
  font-size: 0.9rem;
}

/* BUTTONS */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  white-space: nowrap;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 22px var(--accent-glow); }
.btn-primary:hover { background: var(--accent-dark); }
.btn-block { width: 100%; }

/* HEADER */
.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--card-border);
  height: var(--header-h);
}

.app-header-inner {
  max-width: 1180px;
  margin: 0 auto;
  height: 100%;
  padding: 0 24px;
  display: flex;
  align-items: center;
  gap: 32px;
}

.app-logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  white-space: nowrap;
}

.app-nav {
  display: flex;
  gap: 22px;
  flex: 1;
}

.app-nav a {
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 8px 0;
  border-bottom: 2px solid transparent;
}

.app-nav a:hover,
.app-nav a.active {
  color: var(--text);
  border-bottom-color: var(--accent);
}

.app-header-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.btn-new-task { padding: 10px 18px; font-size: 0.9rem; }

.app-profile {
  display: flex;
  align-items: center;
  gap: 8px;
}

.app-profile-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-glow);
  color: var(--accent-light);
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.app-profile-name {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.app-logout {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 600;
}

.app-logout:hover { color: var(--danger); }

.app-nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.3rem;
  cursor: pointer;
}

/* OVERVIEW */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.overview-card h2 {
  font-size: 1.1rem;
  margin-bottom: 14px;
}

.overview-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: -10px;
  margin-bottom: 14px;
}

.card {
  background: var(--card-bg-solid);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-lg);
  padding: 24px;
}

.empty-state {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.task-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.task-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
}

.task-item:hover { border-color: var(--accent-glow); }

.task-subject {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin-bottom: 4px;
}

.task-text {
  font-size: 0.92rem;
  color: var(--text);
  margin-bottom: 4px;
}

.task-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.task-due {
  font-size: 0.82rem;
  color: var(--text-muted);
  white-space: nowrap;
  font-weight: 600;
}

.task-due-overdue { color: var(--danger); }

/* RESPONSIVE */
@media (max-width: 900px) {
  .overview-grid { grid-template-columns: 1fr; }

  .app-nav {
    position: absolute;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--card-border);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px;
    display: none;
  }

  .app-nav.is-open { display: flex; }

  .app-nav a { padding: 12px 0; border-bottom: 1px solid var(--card-border); }

  .app-header-actions .app-profile-name { display: none; }

  .app-nav-toggle { display: block; }

  .btn-new-task span.label { display: none; }
}

@media (max-width: 600px) {
  .btn-new-task { padding: 10px 14px; }
}
/* FORMULARE */
.container-narrow {
  max-width: 720px;
}

.form-errors {
  background: rgba(240, 69, 92, 0.12);
  color: var(--danger);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  margin-bottom: 20px;
  font-size: 0.9rem;
}

.form-errors p { margin: 0; }
.form-errors p + p { margin-top: 6px; }

.form-card { padding: 28px; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group { margin-bottom: 18px; }
.form-group-small { max-width: 160px; }

.form-group label {
  display: block;
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 11px 14px;
  background: var(--bg-secondary);
  border: 1px solid var(--card-border);
  border-radius: var(--radius-md);
  color: var(--text);
  font: inherit;
}

.form-input[readonly] { color: var(--text-muted); }

.form-textarea { resize: vertical; }

.form-file {
  width: 100%;
  padding: 10px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.field-hint {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 6px;
}

.field-hint-error { color: var(--danger); }

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 12px;
  margin-top: 8px;
}

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

.btn-ghost:hover {
  border-color: var(--accent-light);
  color: var(--accent-light);
}

@media (max-width: 600px) {
  .form-row { grid-template-columns: 1fr; }
  .form-group-small { max-width: none; }
  .form-actions { flex-direction: column-reverse; }
  .form-actions .btn { width: 100%; }
}
/* FILTERLEISTE */
.filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 22px;
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.filter-pill {
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  border: 1px solid var(--card-border);
  background: var(--card-bg-solid);
}

.filter-pill:hover { color: var(--text); }

.filter-pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

.filter-selects {
  display: flex;
  gap: 10px;
}

.form-select-inline {
  padding: 9px 12px;
  font-size: 0.85rem;
  width: auto;
}

/* HAUSAUFGABEN-LISTE */
.hw-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.hw-card {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}

.hw-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.hw-task {
  font-size: 1rem;
  margin-bottom: 8px;
}

.hw-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.hw-note {
  font-size: 0.88rem;
  color: var(--text-muted);
  background: var(--bg-secondary);
  padding: 10px 12px;
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.hw-attachment {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--accent-light);
  font-weight: 600;
}

.hw-card-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-shrink: 0;
}

.btn-small {
  padding: 8px 16px;
  font-size: 0.85rem;
  width: 100%;
}

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

@media (max-width: 700px) {
  .hw-card { flex-direction: column; }
  .hw-card-actions { flex-direction: row; width: 100%; }
  .btn-small { width: auto; flex: 1; }
  .filter-bar { flex-direction: column; align-items: stretch; }
  .filter-selects { flex-direction: column; }
}