/* ═══════════════════════════════════════════════════════════════════
   KIVIEO DESIGN-SYSTEM v1 (Phase 45)
   Globale Tokens + konsistente Button-Klassen + Mikro-Interaktionen.
   Eingebunden auf ALLEN Pages via <link rel="stylesheet" href="/kv-design.css">.
   ═══════════════════════════════════════════════════════════════════ */

:root {
  /* Brand-Tokens (Kivieo) */
  --kv-bg:           oklch(7% .005 160);
  --kv-bg-card:      oklch(11% .008 160);
  --kv-bg-elev:      oklch(15% .01 160);
  --kv-border:       oklch(100% 0 0 / .10);
  --kv-border-hover: oklch(100% 0 0 / .22);

  --kv-green:        oklch(80% .24 145);     /* Primary */
  --kv-green-dim:    oklch(65% .18 145);
  --kv-cyan:         oklch(78% .14 200);
  --kv-violet:       oklch(65% .22 295);
  --kv-orange:       oklch(80% .17 75);
  --kv-red:          oklch(65% .22 30);

  --kv-text:         oklch(92% .005 145);
  --kv-text-dim:     oklch(72% .01 145);
  --kv-text-muted:   oklch(58% .01 145);

  /* Radius-Skala (bewusste Hierarchie) */
  --kv-r-xs:    4px;
  --kv-r-sm:    8px;
  --kv-r-md:   12px;
  --kv-r-lg:   18px;
  --kv-r-xl:   24px;
  --kv-r-pill: 999px;

  /* Spacing-Skala */
  --kv-sp-1: 4px;  --kv-sp-2: 8px;  --kv-sp-3: 12px; --kv-sp-4: 16px;
  --kv-sp-5: 20px; --kv-sp-6: 24px; --kv-sp-8: 32px; --kv-sp-10: 40px;
  --kv-sp-12: 48px; --kv-sp-16: 64px; --kv-sp-20: 80px; --kv-sp-24: 96px;

  /* Easing & Timing */
  --kv-ease-out:  cubic-bezier(.22, 1, .36, 1);
  --kv-ease-in:   cubic-bezier(.55, 0, .68, .25);
  --kv-ease-spring: cubic-bezier(.34, 1.56, .64, 1);
  --kv-t-fast:   .15s;
  --kv-t-med:    .25s;
  --kv-t-slow:   .45s;

  /* Z-Layers */
  --kv-z-sticky:  100;
  --kv-z-drawer:  200;
  --kv-z-modal:   300;
  --kv-z-toast:   400;
  --kv-z-overlay: 500;

  /* Schatten */
  --kv-shadow-sm:  0 2px 6px rgba(0,0,0,.20);
  --kv-shadow-md:  0 4px 14px rgba(0,0,0,.30);
  --kv-shadow-lg:  0 12px 36px rgba(0,0,0,.45);
  --kv-shadow-xl:  0 24px 60px rgba(0,0,0,.55);
  --kv-glow-green: 0 0 0 3px oklch(80% .24 145 / .15), 0 8px 24px oklch(80% .24 145 / .25);

  /* ═══ Responsive-Foundation v1 (Phase 60, 2026-05-30) ═══
     Zentrale Breakpoint-Tokens — diese sind die Source-of-Truth.
     Media-Queries nutzen dieselben Zahlen konsistent (CSS-Spec erlaubt
     Custom-Properties NICHT in @media-Queries, daher Zahlen-Duplikation
     in Code). Werte hier als visueller Anker für Devs. */
  --kv-bp-xs:   380px;  /* iPhone SE und kleiner */
  --kv-bp-sm:   540px;  /* großes Mobile */
  --kv-bp-md:   768px;  /* Tablet portrait */
  --kv-bp-lg:   920px;  /* Tablet landscape / kleines Laptop */
  --kv-bp-xl:  1024px;  /* Laptop */
  --kv-bp-xxl: 1280px;  /* Desktop */
  --kv-bp-xxxl:1440px;  /* Large Desktop */

  /* Fluid-Container & Spacing */
  --kv-cx-pad:       clamp(16px, 4vw, 32px);   /* Section padding-inline */
  --kv-cx-pad-tight: clamp(12px, 2.5vw, 20px);
  --kv-sec-y:        clamp(60px, 10vh, 120px); /* Section vertical-spacing */
  --kv-sec-y-tight:  clamp(40px, 6vh, 80px);
  --kv-stack-gap:    clamp(16px, 3vw, 32px);

  /* Fluid-Typografie */
  --kv-fs-h1:    clamp(32px, 6.5vw, 78px);
  --kv-fs-h2:    clamp(26px, 4vw, 46px);
  --kv-fs-h3:    clamp(18px, 2.5vw, 24px);
  --kv-fs-body:  clamp(14px, 1.6vw, 18px);
  --kv-fs-small: clamp(12px, 1.3vw, 14px);

  /* Touch-Target Minimum (Apple HIG 44px / Material 48px) */
  --kv-tap-min:  48px;
}

/* ═══ Wiederverwendbare Layout-Utility-Klassen ═══ */
.kv-container{
  width:100%;
  max-width:1280px;
  margin-inline:auto;
  padding-inline:var(--kv-cx-pad);
}
.kv-container-narrow{
  width:100%;
  max-width:920px;
  margin-inline:auto;
  padding-inline:var(--kv-cx-pad);
}
.kv-container-wide{
  width:100%;
  max-width:1440px;
  margin-inline:auto;
  padding-inline:var(--kv-cx-pad);
}
.kv-stack > * + *{ margin-top:var(--kv-stack-gap); }
.kv-tap{ min-height:var(--kv-tap-min); min-width:var(--kv-tap-min); }

/* Globale Safety-Net: kein H-Scroll wegen Overflow.
   WICHTIG: overflow-x:clip statt hidden — `hidden` macht <body> zum Scroll-Container
   und bricht damit `position:sticky` (Header/Warenkorb scrollen weg → auf Mobile war
   der Cart-Button nicht erreichbar). `clip` kappt H-Overflow OHNE Scroll-Container. */
html{ scroll-behavior:smooth; }
body{ overflow-x:clip; }

/* ═══════════════════════════════════════════════════════════════════
   BUTTONS — 6 Varianten × 3 Größen. Mehr Varianten = inkonsistenter Look.
   ═══════════════════════════════════════════════════════════════════ */

.kv-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--kv-sp-2);
  font-family: inherit;
  font-weight: 600;
  letter-spacing: -.005em;
  border: 1px solid transparent;
  border-radius: var(--kv-r-md);
  cursor: pointer;
  transition: all var(--kv-t-fast) var(--kv-ease-out);
  text-decoration: none;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}
.kv-btn:focus-visible { outline: 2px solid var(--kv-green); outline-offset: 2px; }
.kv-btn:active { transform: scale(.97); transition-duration: 80ms; }
.kv-btn[disabled],
.kv-btn[aria-disabled="true"] { opacity: .5; cursor: not-allowed; pointer-events: none; }

/* Größen */
.kv-btn-sm { padding: 6px 14px; font-size: 12.5px; min-height: 32px; }
.kv-btn-md { padding: 10px 18px; font-size: 14px;   min-height: 40px; }
.kv-btn-lg { padding: 14px 24px; font-size: 15.5px; min-height: 48px; }

/* Varianten */
.kv-btn-primary {
  background: var(--kv-green);
  color: oklch(15% .02 160);
  font-weight: 700;
}
.kv-btn-primary:hover { background: oklch(85% .24 145); transform: translateY(-2px); box-shadow: var(--kv-glow-green); }

.kv-btn-secondary {
  background: transparent;
  color: var(--kv-text);
  border-color: var(--kv-border-hover);
}
.kv-btn-secondary:hover { border-color: var(--kv-green); color: var(--kv-green); background: oklch(80% .24 145 / .04); }

.kv-btn-ghost {
  background: transparent;
  color: var(--kv-text-dim);
}
.kv-btn-ghost:hover { color: var(--kv-text); background: oklch(100% 0 0 / .05); }

.kv-btn-link {
  background: transparent;
  color: var(--kv-green);
  padding: 4px 0;
  min-height: auto;
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1.5px;
}
.kv-btn-link:hover { color: oklch(85% .24 145); }

.kv-btn-icon {
  background: transparent;
  color: var(--kv-text-dim);
  border-radius: var(--kv-r-pill);
  padding: 0;
  width: 40px; height: 40px;
}
.kv-btn-icon.kv-btn-sm { width: 32px; height: 32px; }
.kv-btn-icon.kv-btn-lg { width: 48px; height: 48px; }
.kv-btn-icon:hover { color: var(--kv-text); background: oklch(100% 0 0 / .08); }

.kv-btn-pill {
  background: oklch(100% 0 0 / .04);
  color: var(--kv-text-dim);
  border-color: var(--kv-border);
  border-radius: var(--kv-r-pill);
  padding: 6px 14px;
  font-size: 12.5px;
  font-weight: 600;
  min-height: 32px;
}
.kv-btn-pill:hover { color: var(--kv-text); border-color: var(--kv-border-hover); }
.kv-btn-pill.is-active {
  background: oklch(80% .24 145 / .12);
  color: var(--kv-green);
  border-color: oklch(80% .24 145 / .42);
}

/* Loading-State */
.kv-btn[data-loading="true"] {
  pointer-events: none;
  position: relative;
  color: transparent !important;
}
.kv-btn[data-loading="true"]::after {
  content: '';
  position: absolute;
  width: 14px; height: 14px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: kv-spin .7s linear infinite;
  color: oklch(15% .02 160);
}
@keyframes kv-spin { to { transform: rotate(360deg); } }

/* ═══════════════════════════════════════════════════════════════════
   PILLS — Standalone-Filter (z.B. „Sie / Du" oder Branche-Auswahl)
   ═══════════════════════════════════════════════════════════════════ */

.kv-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.kv-pill-group .kv-btn-pill { margin: 0; }

/* ═══════════════════════════════════════════════════════════════════
   INPUTS — konsistente Form-Elemente
   ═══════════════════════════════════════════════════════════════════ */

.kv-input, .kv-textarea, .kv-select {
  width: 100%;
  background: var(--kv-bg-elev);
  border: 1px solid var(--kv-border);
  color: var(--kv-text);
  font-family: inherit;
  font-size: 14px;
  padding: 10px 14px;
  border-radius: var(--kv-r-sm);
  transition: border-color var(--kv-t-fast) var(--kv-ease-out), box-shadow var(--kv-t-fast);
  min-height: 40px;
}
.kv-input:focus, .kv-textarea:focus, .kv-select:focus {
  outline: none;
  border-color: var(--kv-green);
  box-shadow: 0 0 0 3px oklch(80% .24 145 / .12);
}
.kv-textarea { min-height: 88px; resize: vertical; line-height: 1.55; }

.kv-input-label {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  color: var(--kv-text-dim);
  text-transform: uppercase;
  letter-spacing: .1em;
  margin-bottom: 6px;
}

/* ═══════════════════════════════════════════════════════════════════
   CARDS
   ═══════════════════════════════════════════════════════════════════ */

.kv-card {
  background: var(--kv-bg-card);
  border: 1px solid var(--kv-border);
  border-radius: var(--kv-r-md);
  padding: var(--kv-sp-5);
  transition: border-color var(--kv-t-fast) var(--kv-ease-out), transform var(--kv-t-fast), box-shadow var(--kv-t-fast);
}
.kv-card-hover:hover {
  border-color: var(--kv-border-hover);
  transform: translateY(-2px);
  box-shadow: var(--kv-shadow-md);
}

/* ═══════════════════════════════════════════════════════════════════
   BADGE / CHIP
   ═══════════════════════════════════════════════════════════════════ */

.kv-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  background: oklch(100% 0 0 / .06);
  border: 1px solid oklch(100% 0 0 / .12);
  color: var(--kv-text-dim);
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: var(--kv-r-pill);
}
.kv-badge.is-beta   { background: oklch(80% .17 75 / .15); color: var(--kv-orange); border-color: oklch(80% .17 75 / .35); }
.kv-badge.is-soon   { background: oklch(80% .24 145 / .12); color: var(--kv-green); border-color: oklch(80% .24 145 / .32); }
.kv-badge.is-live   { background: oklch(65% .22 30 / .14);  color: var(--kv-red); border-color: oklch(65% .22 30 / .32); }
.kv-badge.is-dot::before { content: ''; width: 6px; height: 6px; background: currentColor; border-radius: 50%; }

/* ═══════════════════════════════════════════════════════════════════
   FOCUS-RING global — Accessibility
   ═══════════════════════════════════════════════════════════════════ */

*:focus-visible {
  outline: 2px solid var(--kv-green);
  outline-offset: 2px;
  border-radius: var(--kv-r-xs);
}

/* ═══════════════════════════════════════════════════════════════════
   MOTION-PREFERENCE
   ═══════════════════════════════════════════════════════════════════ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }
}
