/* ============================================
   AQUALIZER – base.css
   Design System · Variablen & Grundelemente
   ============================================ */

/* Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;600;700;800&display=swap');

/* ============================================
   CSS VARIABLEN
   ============================================ */
:root {
  /* Farben */
  --color-bg:           #0a1628;
  --color-bg-card:      #111f3a;
  --color-bg-elevated:  #1a2d4a;
  --color-accent:       #2dd4bf;
  --color-accent-hover: #14b8a6;
  --color-text:         #f1f5f9;
  --color-text-muted:   #94a3b8;
  --color-border:       #1e3a5f;
  --color-success:      #22c55e;
  --color-warning:      #f59e0b;
  --color-danger:       #ef4444;

  /* Abgeleitete Farben (Kompatibilität mit alten Komponenten) */
  --color-success-bg:  rgba(34, 197, 94, 0.12);
  --color-warning-bg:  rgba(245, 158, 11, 0.12);
  --color-danger-bg:   rgba(239, 68, 68, 0.12);
  --color-accent-bg:   rgba(45, 212, 191, 0.12);
  --color-accent-glow: rgba(45, 212, 191, 0.25);

  /* Typografie */
  --font-family:    'DM Sans', system-ui, sans-serif;
  --font-size-xs:   0.75rem;
  --font-size-sm:   0.875rem;
  --font-size-base: 1rem;
  --font-size-lg:   1.125rem;
  --font-size-xl:   1.25rem;
  --font-size-2xl:  1.5rem;
  --font-size-3xl:  2rem;
  --font-size-4xl:  2.75rem;

  --font-weight-normal:   400;
  --font-weight-medium:   500;
  --font-weight-semibold: 600;
  --font-weight-bold:     700;

  --line-height-tight:  1.25;
  --line-height-normal: 1.5;
  --line-height-loose:  1.75;

  /* Abstände */
  --spacing-xs:  4px;
  --spacing-sm:  8px;
  --spacing-md:  16px;
  --spacing-lg:  24px;
  --spacing-xl:  48px;
  --spacing-2xl: 80px;

  /* Radien */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 32px;

  /* Schatten */
  --shadow-sm:     0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md:     0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg:     0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-accent: 0 4px 20px var(--color-accent-glow);

  /* Übergänge */
  --transition-fast:   150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow:   400ms ease;

  /* Layout */
  --container-max: 1200px;
  --content-max:   800px;

  /* Remapping klassischer Variablen aus style.css → neue Tokens */
  --panel:      var(--color-bg-card);
  --panel-soft: var(--color-bg-elevated);
  --border:     var(--color-border);
  --border-2:   var(--color-border);
  --bg:         var(--color-bg);
  --muted:      var(--color-text-muted);
  --radius:     var(--radius-md);
  --shadow:     var(--shadow-sm);
  --shadow-md:  0 4px 12px rgba(0, 0, 0, 0.4);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

[hidden] { display: none !important; }

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, video, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
}

ul, ol {
  list-style: none;
}

/* ============================================
   TYPOGRAFIE
   ============================================ */
h1 {
  font-size: var(--font-size-4xl);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text);
}

h2 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
}

h3 {
  font-size: var(--font-size-xl);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text);
}

h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text);
}

p {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Typografie-Utilities */
.text-xs      { font-size: var(--font-size-xs); }
.text-sm      { font-size: var(--font-size-sm); }
.text-base    { font-size: var(--font-size-base); }
.text-lg      { font-size: var(--font-size-lg); }
.text-xl      { font-size: var(--font-size-xl); }
.text-2xl     { font-size: var(--font-size-2xl); }
.text-3xl     { font-size: var(--font-size-3xl); }
.text-4xl     { font-size: var(--font-size-4xl); }
.text-accent  { color: var(--color-accent); }
.text-muted   { color: var(--color-text-muted); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger  { color: var(--color-danger); }
.text-center  { text-align: center; }

.font-medium   { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold     { font-weight: var(--font-weight-bold); }

.leading-tight { line-height: var(--line-height-tight); }
.leading-loose { line-height: var(--line-height-loose); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.hidden { display: none; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: 14px 28px;
  border-radius: var(--radius-xl);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-secondary:hover {
  background: rgba(45, 212, 191, 0.08);
}

/* Alias: btn-outline → btn-secondary (Rückwärtskompatibilität) */
.btn-outline {
  background: transparent;
  color: var(--color-accent);
  border: 1.5px solid var(--color-accent);
}
.btn-outline:hover {
  background: rgba(45, 212, 191, 0.08);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}
.btn-danger:hover {
  background: #dc2626;
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.btn-ghost:hover {
  background: var(--color-bg-elevated);
  color: var(--color-text);
}

.btn-sm  { padding: 8px 18px;   font-size: var(--font-size-sm); }
.btn-lg  { padding: 18px 36px;  font-size: var(--font-size-lg); }

/* ============================================
   CARDS
   ============================================ */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: border-color 0.2s ease;
}
.card:hover {
  border-color: var(--color-accent);
}

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

/* ============================================
   CHIPS & BADGES
   ============================================ */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: 6px 14px;
  border-radius: var(--radius-xl);
  font-size: var(--font-size-sm);
  font-weight: 500;
  background: var(--color-bg-elevated);
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
}
.chip-accent  { background: rgba(45, 212, 191, 0.1);  color: var(--color-accent);  border-color: rgba(45, 212, 191, 0.3);  box-shadow: 0 0 7px rgba(45, 212, 191, .28); }
.chip-success { background: rgba(34, 197, 94, 0.1);   color: var(--color-success); border-color: rgba(34, 197, 94, 0.3);   box-shadow: 0 0 7px rgba(34, 197, 94, .28); }
.chip-warning { background: rgba(245, 158, 11, 0.1);  color: var(--color-warning); border-color: rgba(245, 158, 11, 0.3);  box-shadow: 0 0 7px rgba(245, 158, 11, .28); }
.chip-danger  { background: rgba(239, 68, 68, 0.1);   color: var(--color-danger);  border-color: rgba(239, 68, 68, 0.3);   box-shadow: 0 0 7px rgba(239, 68, 68, .28); }

.badge {
  display: inline-block;
  background: rgba(45, 212, 191, 0.15);
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   INPUT FIELDS
   ============================================ */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-md);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text);
}

input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="range"]):not([type="hidden"]),
textarea,
select {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  width: 100%;
  box-sizing: border-box;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
}

.input-sm,
.input-sm input,
input.input-sm,
select.input-sm,
textarea.input-sm {
  padding: .38rem .6rem !important;
  font-size: var(--font-size-sm) !important;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  appearance: none;
  -webkit-appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-text-muted);
  opacity: 0.7;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  border-color: #2d4a6e;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus,
input:not([type="checkbox"]):not([type="radio"]):not([type="submit"]):not([type="button"]):not([type="range"]):focus,
textarea:focus,
select:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.12);
  outline: none;
}

.form-input.input-error,
.form-select.input-error,
.form-textarea.input-error {
  border-color: var(--color-danger);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.12);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

.form-select {
  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='%2394a3b8' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-hint  { font-size: var(--font-size-xs); color: var(--color-text-muted); }
.form-error { font-size: var(--font-size-xs); color: var(--color-danger); }

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  cursor: pointer;
}
.form-check input[type="checkbox"],
.form-check input[type="radio"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-accent);
  cursor: pointer;
  flex-shrink: 0;
}
.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  cursor: pointer;
}

/* ============================================
   LOCK-OVERLAY (Premium-Feature gesperrt)
   ============================================ */
.premium-lock {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.premium-lock-content {
  filter: blur(4px);
  pointer-events: none;
  user-select: none;
}
.premium-lock-overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 22, 40, 0.75);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  text-align: center;
  padding: var(--spacing-lg);
}
.premium-lock-overlay p {
  font-size: var(--font-size-sm);
  color: var(--color-text);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

/* ============================================
   KI-ZÄHLER
   ============================================ */
.ai-counter {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-xs);
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-xl);
}
.ai-counter-ok    { background: rgba(34, 197, 94, 0.1);  color: var(--color-success); border: 1px solid rgba(34, 197, 94, 0.3); }
.ai-counter-low   { background: rgba(245, 158, 11, 0.1); color: var(--color-warning); border: 1px solid rgba(245, 158, 11, 0.3); }
.ai-counter-empty { background: rgba(239, 68, 68, 0.1);  color: var(--color-danger);  border: 1px solid rgba(239, 68, 68, 0.3); }

/* ============================================
   TRIAL-BANNER
   ============================================ */
.trial-banner {
  background: rgba(45, 212, 191, 0.08);
  border: 1px solid rgba(45, 212, 191, 0.25);
  border-radius: var(--radius-md);
  padding: var(--spacing-sm) var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  font-size: var(--font-size-sm);
}
.trial-banner span {
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================
   DIVIDER
   ============================================ */
.divider {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: var(--spacing-xl) 0;
}

/* ============================================
   UTILITY / LAYOUT
   ============================================ */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-xl) var(--spacing-lg);
}

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--spacing-lg); }
.grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--spacing-lg); }

@media (max-width: 640px) {
  .grid-2, .grid-3 { grid-template-columns: 1fr; }
  h1 { font-size: var(--font-size-3xl); }
  h2 { font-size: var(--font-size-2xl); }
  .section { padding: var(--spacing-lg) var(--spacing-md); }
}