/* ============================================================
   buttons.css — canonical button system for In&Out Consulting
   Single source of truth. Import alongside chrome.css.

     <link rel="stylesheet" href="chrome.css" />
     <link rel="stylesheet" href="buttons.css" />

   Anatomy:  .btn .btn-{variant}  [.btn-{size}]  [.btn-pill]  [.btn-block]

   Variants: primary | brand | secondary | ghost | danger
   Sizes:    sm | (default) | lg
   Shape:    pill, block (full width)
   ============================================================ */

:root {
  --btn-radius: 10px;
  --btn-radius-pill: 999px;

  --btn-h-sm: 32px;
  --btn-h-md: 40px;
  --btn-h-lg: 48px;

  --btn-px-sm: 12px;
  --btn-px-md: 18px;
  --btn-px-lg: 24px;

  --btn-fs-sm: 12.5px;
  --btn-fs-md: 14px;
  --btn-fs-lg: 15px;

  /* Brand variant colors (kept in sync with chrome.css --brand) */
  --btn-brand:        var(--brand);
  --btn-brand-hover:  #0bc278;
  --btn-brand-active: #0aa868;

  --btn-danger:       #b91c1c;
  --btn-danger-bg:    #fef2f2;
  --btn-danger-border:#fecaca;
}

/* ----------------------------------------------------------------
   Base
   NOTE: keep selector list class-only — adding `button.btn` raises
   specificity above `.btn-primary` etc. and silently breaks variants.
   ---------------------------------------------------------------- */
.btn {
  /* Layout */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  vertical-align: middle;

  /* Size (default = md) */
  height: var(--btn-h-md);
  padding: 0 var(--btn-px-md);
  border-radius: var(--btn-radius);

  /* Type */
  font-family: inherit;
  font-size: var(--btn-fs-md);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -0.005em;
  text-decoration: none;
  white-space: nowrap;

  /* Reset */
  background: transparent;
  color: inherit;
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  -webkit-appearance: none;
  appearance: none;

  transition: background .15s ease, border-color .15s ease,
              color .15s ease, transform .12s ease, box-shadow .15s ease;
}
.btn:active { transform: translateY(1px); }
.btn:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(13, 221, 134, 0.28);
}
.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.6;
  transform: none;
  box-shadow: none;
}
.btn svg {
  width: 14px; height: 14px;
  flex-shrink: 0;
}

/* ----------------------------------------------------------------
   Sizes
   ---------------------------------------------------------------- */
.btn-sm {
  height: var(--btn-h-sm);
  padding: 0 var(--btn-px-sm);
  font-size: var(--btn-fs-sm);
  gap: 6px;
}
.btn-sm svg { width: 12px; height: 12px; }

.btn-lg {
  height: var(--btn-h-lg);
  padding: 0 var(--btn-px-lg);
  font-size: var(--btn-fs-lg);
  gap: 10px;
}
.btn-lg svg { width: 16px; height: 16px; }

/* ----------------------------------------------------------------
   Shape & width modifiers
   ---------------------------------------------------------------- */
.btn-pill  { border-radius: var(--btn-radius-pill); }
.btn-block { display: flex; width: 100%; }

/* Icon-only — square button sized to its height (kebab menus, toolbar icons).
   Pair with a variant (usually .btn-secondary or .btn-ghost). */
.btn-icon { padding: 0; width: var(--btn-h-md); }
.btn-icon.btn-sm { width: var(--btn-h-sm); }
.btn-icon.btn-lg { width: var(--btn-h-lg); }

/* ----------------------------------------------------------------
   Variant: PRIMARY — dark ink, default for primary actions
   ---------------------------------------------------------------- */
.btn-primary {
  background: var(--ink);
  color: #fff;
  border-color: var(--ink);
}
.btn-primary:hover { background: #000; border-color: #000; }
.btn-primary:disabled,
.btn-primary[aria-disabled="true"] { background: #d6dadf; border-color: #d6dadf; color: #fff; }

/* ----------------------------------------------------------------
   Variant: BRAND — green, for marketing / signup conversion CTAs
   ---------------------------------------------------------------- */
.btn-brand {
  background: var(--btn-brand);
  color: #fff;
  border-color: var(--btn-brand);
}
.btn-brand:hover {
  color: #fff;
  background: var(--btn-brand-hover);
  border-color: var(--btn-brand-hover);
  box-shadow: 0 8px 18px rgba(13, 221, 134, 0.28);
}
.btn-brand:disabled,
.btn-brand[aria-disabled="true"] { background: #d6dadf; border-color: #d6dadf; color: #fff; box-shadow: none; }

/* ----------------------------------------------------------------
   Variant: SECONDARY — white with hairline border, neutral
   ---------------------------------------------------------------- */
.btn-secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}
.btn-secondary:hover { border-color: var(--ink); }

/* ----------------------------------------------------------------
   Variant: GHOST — transparent text, lightest action
   ---------------------------------------------------------------- */
.btn-ghost {
  background: transparent;
  color: var(--ink-2);
  border-color: transparent;
}
.btn-ghost:hover { background: var(--bg-soft); color: var(--ink); }

/* ----------------------------------------------------------------
   Variant: DANGER — destructive (delete account, leave team, etc.)
   ---------------------------------------------------------------- */
.btn-danger {
  background: #fff;
  color: var(--btn-danger);
  border-color: var(--btn-danger-border);
}
.btn-danger:hover {
  background: var(--btn-danger-bg);
  border-color: #fca5a5;
}

/* ----------------------------------------------------------------
   Inline / link-style — for in-text actions ("Mehr erfahren →")
   ---------------------------------------------------------------- */
.btn-link {
  display: inline-flex; align-items: center; gap: 4px;
  background: transparent; border: 0; padding: 2px 4px;
  font-family: inherit; font-size: 13px; font-weight: 600; line-height: 1.4;
  color: var(--brand-deep);
  cursor: pointer; border-radius: 6px;
}
.btn-link:hover { background: var(--brand-soft); color: var(--brand-deep); }

/* ----------------------------------------------------------------
   Button group — joined toggle row (visual match to .segmented).
   Sits on a soft track; the active button gets a white "lifted" pill.
   ---------------------------------------------------------------- */
.btn-group {
  display: inline-flex;
  padding: 3px; gap: 2px;
  background: var(--bg-soft);
  border: 1px solid var(--line);
  border-radius: var(--btn-radius);
}
.btn-group > .btn,
.btn-group > button {
  appearance: none;
  height: 32px; padding: 0 14px;
  border: 0; border-radius: 7px;
  background: transparent;
  color: var(--ink-2);
  font-family: inherit; font-size: 13px; font-weight: 600;
  cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  transition: background .15s ease, color .15s ease, box-shadow .15s ease;
}
.btn-group > .btn:hover,
.btn-group > button:hover { color: var(--ink); }
.btn-group > .btn.is-active,
.btn-group > button.is-active {
  background: #fff; color: var(--ink);
  box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
}
.btn-group.is-pill { border-radius: 999px; }
.btn-group.is-pill > .btn,
.btn-group.is-pill > button { border-radius: 999px; }

/* ----------------------------------------------------------------
   Mobile — large marketing CTAs stretch full-width.
   .btn-lg is the marketing-CTA size (hero actions, inline-CTA bands,
   gate cards). Below 640px we promote it to a block button so the
   hit target spans the full column. Opt out with .btn-keep-inline.
   ---------------------------------------------------------------- */
@media (max-width: 640px) {
  .btn-lg:not(.btn-keep-inline) {
    display: flex;
    width: 100%;
  }
}