/* ─────────────────────────────────────────────────────
   Kalender-WebApp – Haupt-Stylesheet
   Portable Node.js + Express + EJS App
   ───────────────────────────────────────────────────── */

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

:root {
  --primary:       #3b82f6;
  --primary-dark:  #2563eb;
  --primary-light: #eff6ff;
  --danger:        #ef4444;
  --danger-dark:   #dc2626;
  --gray-50:       #f9fafb;
  --gray-100:      #f3f4f6;
  --gray-200:      #e5e7eb;
  --gray-300:      #d1d5db;
  --gray-500:      #6b7280;
  --gray-700:      #374151;
  --gray-900:      #111827;
  --white:         #ffffff;
  --radius:        8px;
  --radius-lg:     12px;
  --shadow:        0 1px 3px rgba(0,0,0,.1), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:     0 4px 6px -1px rgba(0,0,0,.1);
  --transition:    all .2s ease;
}

html { font-size: 16px; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--gray-50);
  color: var(--gray-900);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  line-height: 1.6;
}

a { color: var(--primary); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--primary-dark); }

small, .text-muted { color: var(--gray-500); font-size: .82rem; }

/* ─── Topbar ─────────────────────────────────────────── */
.topbar {
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 0 1.5rem;
  height: 68px;
  display: flex;
  align-items: center;
  gap: 1.25rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.brand { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); white-space: nowrap; }
.brand:hover { color: var(--primary); }

.topbar-nav { display: flex; gap: .2rem; flex: 1; }

.topbar-nav a {
  padding: .4rem .8rem;
  border-radius: var(--radius);
  color: var(--gray-700);
  font-size: .88rem;
  font-weight: 500;
}
.topbar-nav a:hover, .topbar-nav a.active {
  background: var(--primary-light);
  color: var(--primary);
}

.topbar-right { display: flex; align-items: center; gap: .6rem; white-space: nowrap; }

.user-badge {
  font-size: .82rem;
  font-weight: 600;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: .28rem .7rem;
  border-radius: 999px;
}

.role-badge {
  font-size: .75rem;
  font-weight: 700;
  color: var(--white);
  background: var(--primary);
  padding: .2rem .55rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

/* Rollenspezifische Farben */
.role-badge-admin   { background: var(--primary); }          /* Blau – Admin      */
.role-badge-editor  { background: #16a34a; }                 /* Gruen – Editor    */
.role-badge-autor   { background: #9333ea; }                 /* Lila – Autor      */
.role-badge-viewer  { background: var(--gray-500); }         /* Grau – Betrachter */

/* ─── Haupt-Content ──────────────────────────────────── */
.main-content {
  flex: 1;
  max-width: 980px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 1.5rem;
}

/* ─── Page Header ────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.page-header h2 { font-size: 1.45rem; font-weight: 700; }
.page-header-left { display: flex; flex-direction: column; gap: .35rem; }
.page-header-actions { display: flex; gap: .5rem; }

/* ─── Buttons ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .52rem 1rem;
  border-radius: var(--radius);
  font-size: .88rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
  text-decoration: none;
  background: none;
  font-family: inherit;
}
.btn-primary  { background: var(--primary); color: var(--white); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: var(--white); }
.btn-outline  { border-color: var(--gray-300); color: var(--gray-700); background: var(--white); }
.btn-outline:hover { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.btn-danger   { background: var(--danger); border-color: var(--danger); color: var(--white); }
.btn-danger:hover { background: var(--danger-dark); border-color: var(--danger-dark); color: var(--white); }
.btn-sm { padding: .32rem .7rem; font-size: .8rem; }
.btn-block { width: 100%; }

/* ─── Karten ─────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
  box-shadow: var(--shadow);
  padding: 1.5rem;
}

/* ─── Event-Listen ───────────────────────────────────── */
.events-list { display: flex; flex-direction: column; gap: .65rem; }

.event-card {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--primary);
  padding: .9rem 1.1rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}
.event-card:hover { box-shadow: var(--shadow-md); transform: translateY(-1px); }
.event-card--today { background: #f0f9ff; }

.event-date {
  font-size: .78rem;
  color: var(--gray-500);
  font-weight: 600;
  white-space: nowrap;
  min-width: 110px;
  line-height: 1.4;
}

.event-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; margin-top: 5px; }

.event-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: .2rem; }

.event-title { font-size: .97rem; font-weight: 600; }
.event-title a { color: var(--gray-900); }
.event-title a:hover { color: var(--primary); }

.event-location, .event-organizer, .event-time {
  font-size: .8rem;
  color: var(--gray-500);
}

.event-desc {
  font-size: .82rem;
  color: var(--gray-500);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.event-actions { display: flex; gap: .4rem; flex-shrink: 0; align-self: center; }

/* ─── Kategorie-Tags ─────────────────────────────────── */
.category-tag {
  display: inline-block;
  font-size: .72rem;
  font-weight: 700;
  padding: .15rem .55rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: .04em;
  width: fit-content;
}

.category-badge {
  display: inline-block;
  font-size: .82rem;
  font-weight: 700;
  padding: .25rem .75rem;
  border-radius: 999px;
}

.tag-allday {
  color: var(--primary);
  font-weight: 600;
  font-size: .75rem;
}

/* ─── Dashboard-Sektionen ────────────────────────────── */
.dashboard-section { margin-bottom: 2.25rem; }

.section-title {
  font-size: .85rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .75rem;
}

.dashboard-footer { margin-top: 1.1rem; }

/* ─── Kalender-Navigation ────────────────────────────── */
.calendar-nav { display: flex; gap: .5rem; margin-bottom: 1.25rem; flex-wrap: wrap; }

/* ─── Formular-Seite ─────────────────────────────────── */
.form-page { max-width: 700px; margin: 0 auto; }

.form-card { display: flex; flex-direction: column; gap: 0; padding: 0; overflow: hidden; }

.form-section {
  padding: 1.4rem 1.5rem;
  border-bottom: 1px solid var(--gray-100);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-section:last-child { border-bottom: none; }

.form-section-title {
  font-size: .85rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin-bottom: .1rem;
}

.form-group { display: flex; flex-direction: column; gap: .3rem; }

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
@media (max-width: 560px) { .form-row { grid-template-columns: 1fr; } }

label { font-size: .875rem; font-weight: 600; color: var(--gray-700); }

.required { color: var(--danger); }

.form-control {
  width: 100%;
  padding: .58rem .85rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: .92rem;
  color: var(--gray-900);
  background: var(--white);
  transition: var(--transition);
  font-family: inherit;
}
.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59,130,246,.15);
}

textarea.form-control { resize: vertical; min-height: 80px; }
select.form-control { cursor: pointer; }

.checkbox-label {
  display: flex;
  align-items: center;
  gap: .5rem;
  font-size: .9rem;
  font-weight: 500;
  cursor: pointer;
}
.checkbox-label input[type="checkbox"] { width: 16px; height: 16px; cursor: pointer; }

.conditional-field {
  flex-direction: column;
  gap: .3rem;
  padding-left: 1.5rem;
  border-left: 3px solid var(--gray-200);
}

.form-hint { font-size: .78rem; color: var(--gray-500); margin-top: .1rem; }

/* Kategorie-Vorschau im Formular */
.category-preview {
  margin-top: .4rem;
  padding: .35rem .75rem;
  border-radius: var(--radius);
  font-size: .85rem;
  font-weight: 600;
  width: fit-content;
}

.form-actions {
  display: flex;
  gap: .75rem;
  align-items: center;
  flex-wrap: wrap;
  padding: 1.25rem 1.5rem;
  background: var(--gray-50);
  border-top: 1px solid var(--gray-200);
}

/* ─── Detail-Ansicht ─────────────────────────────────── */
.detail-card { position: relative; }

.detail-list {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: .65rem 1.1rem;
  margin-bottom: 1.25rem;
}

dt {
  font-size: .8rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .04em;
  padding-top: .1rem;
}

dd { color: var(--gray-900); line-height: 1.5; }

.description-text { white-space: pre-wrap; line-height: 1.7; }

.detail-section-divider {
  font-size: .8rem;
  font-weight: 700;
  color: var(--gray-500);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin: 1.25rem 0 .75rem;
  padding-bottom: .4rem;
  border-bottom: 1px solid var(--gray-100);
}

.detail-meta {
  font-size: .78rem;
  color: var(--gray-400);
  margin-top: 1.25rem;
  padding-top: .75rem;
  border-top: 1px solid var(--gray-100);
}

.detail-actions {
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  border-top: 1px solid var(--gray-200);
  padding-top: 1.25rem;
  margin-top: 1rem;
}

/* ─── Login-Seite ────────────────────────────────────── */
body.login-page {
  background: linear-gradient(135deg, #1e3a5f 0%, #3b82f6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.login-wrapper { width: 100%; max-width: 400px; padding: 1.5rem; }

.login-card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  padding: 2.5rem;
}

.login-header { text-align: center; margin-bottom: 2rem; }
.login-icon { font-size: 3rem; margin-bottom: .5rem; }
.login-header h1 { font-size: 1.75rem; font-weight: 800; margin-bottom: .25rem; }
.login-subtitle { color: var(--gray-500); font-size: .95rem; }
.login-form { display: flex; flex-direction: column; gap: 1.1rem; }

.login-hint {
  text-align: center;
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--gray-200);
  color: var(--gray-500);
}
.login-hint code {
  background: var(--gray-100);
  padding: .15rem .4rem;
  border-radius: 4px;
  font-size: .85rem;
  color: var(--gray-700);
}

/* ─── Alerts ─────────────────────────────────────────── */
.alert { padding: .85rem 1.1rem; border-radius: var(--radius); font-size: .9rem; margin-bottom: 1rem; }
.alert-error { background: #fef2f2; border: 1px solid #fecaca; color: #b91c1c; }

/* ─── Empty State ────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  background: var(--white);
  border-radius: var(--radius-lg);
  border: 2px dashed var(--gray-200);
}
.empty-icon { font-size: 3rem; margin-bottom: 1rem; }
.empty-state h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .5rem; }
.empty-state p { color: var(--gray-500); margin-bottom: 1.5rem; }

/* ─── Footer ─────────────────────────────────────────── */
.footer {
  text-align: center;
  padding: 1.1rem;
  color: var(--gray-500);
  font-size: .78rem;
  border-top: 1px solid var(--gray-200);
  background: var(--white);
  margin-top: auto;
}

/* ─── Responsive ─────────────────────────────────────── */
@media (max-width: 640px) {
  .topbar { padding: 0 1rem; gap: .6rem; }
  .topbar-nav a { padding: .4rem .5rem; font-size: .8rem; }
  .user-badge, .role-badge { display: none; }
  .main-content { padding: 0 1rem; margin: 1.25rem auto; }
  .event-card { flex-wrap: wrap; }
  .event-date { min-width: auto; }
  .event-actions { width: 100%; }
  .detail-list { grid-template-columns: 1fr; }
  dt { padding-bottom: 0; margin-bottom: -.3rem; }
}

/* ─── Topbar-Links: Flex-Container für Logo + Theme-Umschalter ───────────── */
.topbar-left { display: flex; align-items: center; gap: .5rem; }

/* ─── CSS-Variable Ergänzungen ───────────────────────────────────────────── */
:root { --gray-600: #4b5563; --nav-dark: #111827; }

/* ─── Theme-Umschalter ───────────────────────────────────────────────────── */
.theme-switcher { position: relative; display: flex; align-items: center; }

.theme-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border: none;
  border-radius: var(--radius);
  background: transparent;
  color: var(--gray-500);
  font-size: .95rem;
  cursor: pointer;
  transition: background .15s, color .15s;
  font-family: inherit;
  padding: 0;
  line-height: 1;
}
.theme-btn:hover,
.theme-btn.active { background: var(--gray-100); color: var(--gray-900); }

.theme-menu {
  position: absolute;
  top: calc(100% + 4px);
  right: 0;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  min-width: 130px;
  z-index: 9999;
  overflow: hidden;
}

.theme-opt {
  display: flex;
  align-items: center;
  gap: .45rem;
  width: 100%;
  padding: .48rem .85rem;
  border: none;
  background: transparent;
  color: var(--gray-700);
  font-size: .83rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .12s;
  font-family: inherit;
  text-align: left;
}
.theme-opt:hover { background: var(--gray-100); }
.theme-opt.active { background: var(--primary-light); color: var(--primary); font-weight: 700; }

/* ─── Dark Mode – explizit aktiviert per data-theme="dark" ──────────────── */
:root[data-theme="dark"] {
  color-scheme: dark;
  --primary:       #60a5fa;
  --primary-dark:  #3b82f6;
  --primary-light: #0f2d5a;
  --danger:        #f87171;
  --danger-dark:   #ef4444;
  --gray-50:       #0f172a;
  --gray-100:      #1e293b;
  --gray-200:      #334155;
  --gray-300:      #475569;
  --gray-500:      #94a3b8;
  --gray-600:      #cbd5e1;
  --gray-700:      #e2e8f0;
  --gray-900:      #f1f5f9;
  --white:         #1e293b;
  --nav-dark:      #0f172a;
  --shadow:        0 1px 3px rgba(0,0,0,.4), 0 1px 2px rgba(0,0,0,.3);
  --shadow-md:     0 4px 6px -1px rgba(0,0,0,.5);
}

/* ─── Dark Mode – automatisch via Systemeinstellung ─────────────────────── */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) {
    color-scheme: dark;
    --primary:       #60a5fa;
    --primary-dark:  #3b82f6;
    --primary-light: #0f2d5a;
    --danger:        #f87171;
    --danger-dark:   #ef4444;
    --gray-50:       #0f172a;
    --gray-100:      #1e293b;
    --gray-200:      #334155;
    --gray-300:      #475569;
    --gray-500:      #94a3b8;
    --gray-600:      #cbd5e1;
    --gray-700:      #e2e8f0;
    --gray-900:      #f1f5f9;
    --white:         #1e293b;
    --nav-dark:      #0f172a;
    --shadow:        0 1px 3px rgba(0,0,0,.4), 0 1px 2px rgba(0,0,0,.3);
    --shadow-md:     0 4px 6px -1px rgba(0,0,0,.5);
  }
}

/* ─── Dark Mode – weißer Text auf farbigen Hintergründen erhalten ────────── */
/* Buttons und Badges nutzen --white für Text – muss im Dark Mode übersteuert */
/* werden, da --white dort zur dunklen Flächenfarbe wird.                      */
:root[data-theme="dark"] .btn-primary,
:root[data-theme="dark"] .btn-danger { color: #ffffff; }
:root[data-theme="dark"] .role-badge,
:root[data-theme="dark"] .role-badge-admin,
:root[data-theme="dark"] .role-badge-editor,
:root[data-theme="dark"] .role-badge-autor,
:root[data-theme="dark"] .role-badge-viewer { color: #ffffff; }

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]):not([data-theme="dark"]) .btn-primary,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .btn-danger { color: #ffffff; }
  :root:not([data-theme="light"]):not([data-theme="dark"]) .role-badge,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .role-badge-admin,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .role-badge-editor,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .role-badge-autor,
  :root:not([data-theme="light"]):not([data-theme="dark"]) .role-badge-viewer { color: #ffffff; }
}