/* ============================================================
   Portfolio-Tracker – Premium Dark UI
   ============================================================ */

:root {
  /* Hintergrund-Schichten */
  --bg:         #080810;
  --surface:    #0f0f1a;
  --surface2:   #16162a;
  --surface3:   #1e1e35;
  --border:     #252540;
  --border-hi:  #363660;

  /* Text */
  --text:       #e4e4f0;
  --text-dim:   #9191b0;
  --text-mute:  #4a4a70;

  /* Akzente */
  --accent:     #6366f1;
  --accent2:    #818cf8;
  --accent-glow: rgba(99,102,241,.25);

  /* Semantische Farben */
  --gruen:      #10b981;
  --gruen-glow: rgba(16,185,129,.18);
  --rot:        #f43f5e;
  --rot-glow:   rgba(244,63,94,.18);
  --gelb:       #f59e0b;
  --lila:       #a78bfa;
  --cyan:       #22d3ee;

  /* Layout */
  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  18px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.5);
  --shadow:     0 4px 24px rgba(0,0,0,.6);
  --shadow-lg:  0 8px 48px rgba(0,0,0,.8);

  /* Übergänge */
  --ease:       cubic-bezier(.4,0,.2,1);
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  background-image:
    radial-gradient(ellipse 80% 50% at 50% -20%, rgba(99,102,241,.08), transparent),
    radial-gradient(ellipse 60% 40% at 80% 100%, rgba(16,185,129,.04), transparent);
  background-attachment: fixed;
  color: var(--text);
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  font-size: 14px;
  line-height: 1.65;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigationsleiste ─────────────────────────────────────── */
.navbar {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 0 2rem;
  height: 58px;
  background: rgba(8,8,16,.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 200;
}

.navbar::after {
  content: '';
  position: absolute;
  inset: 0;
  border-bottom: 1px solid rgba(99,102,241,.15);
  pointer-events: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: .5rem;
  text-decoration: none;
  white-space: nowrap;
}

.brand-icon {
  font-size: 1.4rem;
  background: linear-gradient(135deg, var(--accent), var(--lila));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.brand-text {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -.01em;
  background: linear-gradient(135deg, #e4e4f0, #9191b0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: .25rem;
}

.nav-links a {
  display: flex;
  align-items: center;
  gap: .4rem;
  color: var(--text-dim);
  text-decoration: none;
  padding: .4rem .9rem;
  border-radius: var(--radius-sm);
  font-size: .84rem;
  font-weight: 500;
  transition: color .2s var(--ease), background .2s var(--ease);
  white-space: nowrap;
  position: relative;
}

.nav-links a .nav-icon {
  font-size: .75rem;
  opacity: .7;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface2);
}

.nav-links a.active {
  color: var(--accent2);
  background: rgba(99,102,241,.12);
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  border-radius: 2px;
}

.nav-right {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: .75rem;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: .5rem;
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: .3rem .85rem;
  border-radius: 30px;
  font-size: .8rem;
  font-weight: 500;
  color: var(--text-dim);
}

.user-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--gruen);
  box-shadow: 0 0 6px var(--gruen);
  animation: pulse-dot 2.5s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; }
  50%       { opacity: .4; }
}

/* ── Hauptcontainer ───────────────────────────────────────── */
.container {
  max-width: 1340px;
  margin: 0 auto;
  padding: 2rem 1.75rem;
}

/* ── Flash-Meldungen ──────────────────────────────────────── */
.alert {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .85rem 1.25rem;
  margin-bottom: 1.25rem;
  border-radius: var(--radius);
  font-size: .875rem;
  font-weight: 500;
  animation: slide-down .3s var(--ease);
  backdrop-filter: blur(8px);
}

@keyframes slide-down {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.alert-success { background: rgba(16,185,129,.1);  border: 1px solid rgba(16,185,129,.3);  color: var(--gruen); }
.alert-danger  { background: rgba(244,63,94,.1);   border: 1px solid rgba(244,63,94,.3);   color: var(--rot);   }
.alert-warning { background: rgba(245,158,11,.1);  border: 1px solid rgba(245,158,11,.3);  color: var(--gelb);  }
.alert-info    { background: rgba(99,102,241,.1);  border: 1px solid rgba(99,102,241,.3);  color: var(--accent2); }

/* ── Schaltflächen ────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  padding: .5rem 1.1rem;
  border-radius: var(--radius-sm);
  font-size: .84rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid transparent;
  text-decoration: none;
  transition: all .2s var(--ease);
  white-space: nowrap;
  letter-spacing: .01em;
}

.btn:hover   { transform: translateY(-1px); }
.btn:active  { transform: translateY(0); }
.btn:disabled { opacity: .35; cursor: not-allowed; transform: none; }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #7c3aed);
  color: #fff;
  box-shadow: 0 0 20px rgba(99,102,241,.3), inset 0 1px 0 rgba(255,255,255,.1);
}
.btn-primary:hover {
  box-shadow: 0 0 30px rgba(99,102,241,.45), inset 0 1px 0 rgba(255,255,255,.1);
}

.btn-outline {
  background: rgba(255,255,255,.04);
  border-color: var(--border-hi);
  color: var(--text);
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent2);
  background: rgba(99,102,241,.1);
}

.btn-danger {
  background: rgba(244,63,94,.15);
  border-color: rgba(244,63,94,.3);
  color: var(--rot);
}
.btn-danger:hover {
  background: rgba(244,63,94,.25);
  border-color: var(--rot);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-dim);
}
.btn-ghost:hover {
  color: var(--text);
  background: var(--surface2);
}

.btn-sm    { padding: .3rem .7rem; font-size: .78rem; }
.btn-block { width: 100%; }

/* ── Karten ───────────────────────────────────────────────── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.25rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(99,102,241,.4), transparent);
  pointer-events: none;
}

.card h2 {
  font-size: .72rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: .1em;
}

/* ── Seitenüberschrift ────────────────────────────────────── */
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
  gap: .75rem;
}

.page-header h1 {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -.03em;
  background: linear-gradient(135deg, var(--text) 60%, var(--text-dim));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── KPI-Kennzahlen-Karten ────────────────────────────────── */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
  transition: border-color .25s var(--ease), transform .25s var(--ease);
}

.kpi-card:hover {
  transform: translateY(-2px);
}

.kpi-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--border-hi);
  transition: background .25s;
}

.kpi-card.positiv { border-color: rgba(16,185,129,.25); }
.kpi-card.positiv::after { background: linear-gradient(90deg, transparent, var(--gruen), transparent); }

.kpi-card.negativ { border-color: rgba(244,63,94,.25); }
.kpi-card.negativ::after { background: linear-gradient(90deg, transparent, var(--rot), transparent); }

.kpi-card.neutral::after { background: linear-gradient(90deg, transparent, var(--accent), transparent); }

.kpi-label {
  font-size: .7rem;
  font-weight: 600;
  color: var(--text-mute);
  text-transform: uppercase;
  letter-spacing: .1em;
}

.kpi-value {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -.03em;
  line-height: 1.2;
}

.kpi-card.positiv .kpi-value { color: var(--gruen); }
.kpi-card.negativ .kpi-value { color: var(--rot);   }
.kpi-card:not(.positiv):not(.negativ) .kpi-value { color: var(--accent2); }

.kpi-value small {
  font-size: .8rem;
  font-weight: 400;
  color: var(--text-dim);
  margin-left: .2rem;
}
.kpi-sub {
  font-size: .75rem;
  color: var(--text-sub);
  margin-top: .25rem;
  opacity: .8;
}

/* ── Datentabellen ────────────────────────────────────────── */
.table-wrapper { overflow-x: auto; margin: 0 -.25rem; }

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th {
  padding: .65rem .9rem;
  color: var(--text-mute);
  font-size: .68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .1em;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table th:first-child { border-radius: var(--radius-sm) 0 0 0; }
.data-table th:last-child  { border-radius: 0 var(--radius-sm) 0 0; }

.data-table td {
  padding: .7rem .9rem;
  border-bottom: 1px solid rgba(37,37,64,.7);
  white-space: nowrap;
  vertical-align: middle;
  transition: background .15s;
}

.data-table tbody tr {
  transition: background .15s var(--ease);
}

.data-table tbody tr:hover td {
  background: rgba(99,102,241,.04);
}

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

.data-table .num {
  text-align: right;
  font-variant-numeric: tabular-nums;
  font-feature-settings: "tnum";
}

.data-table .name-cell,
.data-table .notes-cell {
  color: var(--text-dim);
  max-width: 130px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* Hervorgehobene Zeile (bald fällige Dividende) */
.highlight-row td {
  background: rgba(245,158,11,.04) !important;
}

/* ── Badges ───────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  padding: .2rem .6rem;
  border-radius: 30px;
  font-size: .68rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
}

.badge-kauf     { background: rgba(16,185,129,.12);   border: 1px solid rgba(16,185,129,.3);  color: var(--gruen); }
.badge-verkauf  { background: rgba(244,63,94,.12);    border: 1px solid rgba(244,63,94,.3);   color: var(--rot);   }
.badge-heute    { background: rgba(244,63,94,.2);     border: 1px solid var(--rot);           color: var(--rot);   }
.badge-bald     { background: rgba(245,158,11,.12);   border: 1px solid rgba(245,158,11,.3);  color: var(--gelb);  }
.badge-prognose { background: rgba(99,102,241,.12);   border: 1px solid rgba(99,102,241,.3);  color: var(--accent2); cursor: help; }

/* ── Farb-Hilfsklassen ────────────────────────────────────── */
.positiv      { color: var(--gruen); }
.negativ      { color: var(--rot);   }
.text-subtext { color: var(--text-dim); }

/* ── Formulare ────────────────────────────────────────────── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: .78rem;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: .02em;
}

.form-group label small {
  font-size: .7rem;
  font-weight: 400;
  color: var(--text-mute);
}

.form-group input,
.form-group select,
.form-group textarea {
  background: var(--surface2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: .6rem .9rem;
  font-size: .875rem;
  font-family: inherit;
  width: 100%;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease), background .2s;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-mute);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface3);
  box-shadow: 0 0 0 3px rgba(99,102,241,.15);
}

.form-group select option {
  background: var(--surface2);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(155px, 1fr));
  gap: 1rem;
}

.btn-row {
  display: flex;
  gap: .75rem;
  margin-top: 1.25rem;
}

.checkbox-row {
  flex-direction: row;
  align-items: center;
  gap: .5rem;
  margin-bottom: .5rem;
}

/* ── Anmelde-/Registrierungskarte ─────────────────────────── */
.auth-card {
  max-width: 420px;
  margin: 6vh auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

.auth-logo {
  text-align: center;
  font-size: 2.8rem;
  margin-bottom: .75rem;
  filter: drop-shadow(0 0 20px rgba(99,102,241,.4));
}

.auth-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -.03em;
  margin-bottom: .25rem;
  text-align: center;
}

.auth-subtitle {
  text-align: center;
  color: var(--text-dim);
  font-size: .85rem;
  margin-bottom: 2rem;
}

.auth-link {
  text-align: center;
  margin-top: 1.25rem;
  font-size: .84rem;
  color: var(--text-dim);
}

.auth-link a {
  color: var(--accent2);
  text-decoration: none;
  font-weight: 500;
}
.auth-link a:hover { text-decoration: underline; }

/* ── Symbol-Link ──────────────────────────────────────────── */
.symbol-link {
  color: var(--accent2);
  text-decoration: none;
  font-weight: 600;
  transition: color .15s;
}
.symbol-link:hover { color: #fff; }

/* ── Leere Zustände ───────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-dim);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  opacity: .5;
}

.empty-state p { margin-bottom: 1rem; }

.empty-msg {
  color: var(--text-mute);
  padding: 1.5rem 0;
  font-style: italic;
  font-size: .875rem;
}

/* ── Kursdiagramm-Seite ───────────────────────────────────── */
.period-tabs {
  display: flex;
  gap: .35rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
  background: var(--surface2);
  padding: .35rem;
  border-radius: var(--radius);
  width: fit-content;
}

.period-btn {
  padding: .35rem 1rem;
  border-radius: var(--radius-sm);
  border: none;
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  font-size: .82rem;
  font-weight: 500;
  font-family: inherit;
  transition: all .2s var(--ease);
}

.period-btn:hover {
  color: var(--text);
  background: var(--surface3);
}

.period-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(99,102,241,.4);
}

.chart-container {
  min-height: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.chart-loading {
  color: var(--text-dim);
  font-size: .875rem;
  display: flex;
  align-items: center;
  gap: .5rem;
}

.chart-loading::before {
  content: '';
  width: 16px; height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ── Scrollbar ────────────────────────────────────────────── */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-hi); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-mute); }

/* ── Mobile Bottom Navigation ─────────────────────────────── */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: rgba(8,8,16,.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  padding: .4rem 0;
  padding-bottom: env(safe-area-inset-bottom, .4rem);
}

.mobile-nav a {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: .15rem;
  text-decoration: none;
  color: var(--text-mute);
  font-size: .65rem;
  padding: .3rem .5rem;
  transition: color .2s;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav a.active {
  color: var(--accent2);
}

.mobile-nav .mobile-nav-icon {
  font-size: 1.2rem;
  line-height: 1;
}

/* ── PWA Install Banner ──────────────────────────────────── */
.pwa-install-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 400;
  background: var(--surface2);
  border-top: 1px solid var(--accent);
  padding: .8rem 1.2rem;
  display: flex;
  align-items: center;
  gap: .8rem;
  box-shadow: 0 -4px 20px rgba(0,0,0,.5);
  animation: slideUp .4s var(--ease);
}

.pwa-install-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: .1rem;
}

.pwa-install-content strong {
  font-size: .85rem;
  color: var(--text);
}

.pwa-install-content small {
  font-size: .7rem;
  color: var(--text-dim);
}

@keyframes slideUp {
  from { transform: translateY(100%); }
  to   { transform: translateY(0); }
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar { padding: 0 1rem; gap: .75rem; }
  .navbar .nav-links { display: none; }
  .navbar .nav-right { margin-left: auto; }
  .mobile-nav { display: flex; justify-content: space-around; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
  .page-header { flex-direction: column; align-items: flex-start; }
  .container { padding: 1.25rem 1rem; padding-bottom: calc(4.5rem + env(safe-area-inset-bottom, 0px)); }
  .pwa-install-banner { bottom: calc(3.5rem + env(safe-area-inset-bottom, 0px)); }

  /* Touch-optimierte Tabellenzellen */
  .data-table td, .data-table th { padding: .6rem .5rem; font-size: .78rem; }
  .data-table .name-cell { max-width: 90px; }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }
}

/* ── iOS Safe Areas ──────────────────────────────────────── */
@supports (padding: env(safe-area-inset-top)) {
  .navbar { padding-top: env(safe-area-inset-top); }
  body { padding-top: env(safe-area-inset-top); }
}

/* ── Touch Verbesserungen ────────────────────────────────── */
@media (hover: none) and (pointer: coarse) {
  .kpi-card { -webkit-tap-highlight-color: transparent; }
  .btn, .kpi-card, .mobile-nav a { touch-action: manipulation; }
}