/* ============================================================
   Rivertide UI kit — tactile components
   Texture buttons · Keycaps · Floating header · Spotlight nav
   Shared by index.html, agents.html, signup.html, watch.html
   ============================================================ */

:root {
  --rt-primary: #003630;
  --rt-teal: #034f46;
  --rt-teal-bright: #94d2c6;
  --rt-ink: #1c1b1b;
}

/* ------------------------------------------------------------
   Texture buttons (Cluely-style: gradient bezel ring + lit face)
   Markup: <a class="tx-btn tx-btn--primary tx-btn--lg">
             <span class="tx-btn__inner">Label</span>
           </a>
   ------------------------------------------------------------ */
.tx-btn {
  position: relative;
  display: inline-flex;
  border-radius: 9999px;
  padding: 2px; /* the bezel ring */
  border: 0;
  cursor: pointer;
  text-decoration: none;
  vertical-align: middle;
  font-family: 'Manrope', sans-serif;
  font-weight: 700;
  line-height: 1;
  transition: transform 0.15s cubic-bezier(0.2, 0.8, 0.4, 1), box-shadow 0.2s ease, filter 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}
.tx-btn:focus-visible {
  outline: 2px solid var(--rt-teal-bright);
  outline-offset: 3px;
}
.tx-btn:hover { transform: translateY(-1px); }
.tx-btn:active { transform: translateY(1px) scale(0.985); filter: brightness(0.97); }

.tx-btn__inner {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6em;
  width: 100%;
  border-radius: 9999px;
  white-space: nowrap;
  overflow: hidden;
}
/* top sheen removed */

/* Primary: deep Rivertide green */
.tx-btn--primary {
  background: #0d4a41;
  box-shadow: 0 1px 2px rgba(0, 33, 29, 0.35), 0 6px 16px -6px rgba(0, 54, 48, 0.45);
}
.tx-btn--primary .tx-btn__inner {
  background: #003630;
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.25), inset 0 -3px 8px rgba(0, 10, 8, 0.45);
  text-shadow: 0 1px 1px rgba(0, 20, 17, 0.4);
}
.tx-btn--primary:hover {
  box-shadow: 0 2px 3px rgba(0, 33, 29, 0.35), 0 10px 26px -6px rgba(3, 79, 70, 0.5);
  filter: saturate(1.1) brightness(1.07);
}

/* Accent: healing teal */
.tx-btn--accent {
  background: #0a5044;
  box-shadow: 0 1px 2px rgba(1, 40, 35, 0.35), 0 6px 16px -6px rgba(3, 79, 70, 0.5);
}
.tx-btn--accent .tx-btn__inner {
  background: #034f46;
  color: #fff;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.28), inset 0 -3px 8px rgba(0, 15, 12, 0.45);
  text-shadow: 0 1px 1px rgba(0, 25, 21, 0.4);
}
.tx-btn--accent:hover {
  box-shadow: 0 2px 3px rgba(1, 40, 35, 0.35), 0 10px 26px -6px rgba(3, 79, 70, 0.55);
  filter: saturate(1.08) brightness(1.08);
}

/* Secondary: warm porcelain */
.tx-btn--secondary {
  background: #ddd7d2;
  box-shadow: 0 1px 2px rgba(28, 27, 27, 0.1), 0 6px 16px -8px rgba(28, 27, 27, 0.28);
}
.tx-btn--secondary .tx-btn__inner {
  background: #f1edea;
  color: var(--rt-ink);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.95), inset 0 -2px 6px rgba(28, 27, 27, 0.08);
}
.tx-btn--secondary:hover {
  box-shadow: 0 2px 3px rgba(28, 27, 27, 0.1), 0 10px 24px -8px rgba(28, 27, 27, 0.32);
}

/* Sizes */
.tx-btn--sm .tx-btn__inner { padding: 0.65rem 1.4rem; font-size: 0.95rem; }
.tx-btn--md .tx-btn__inner { padding: 0.8rem 1.75rem; font-size: 1rem; }
.tx-btn--lg .tx-btn__inner { padding: 1.1rem 2.3rem; font-size: 1.25rem; }
.tx-btn--block { display: flex; width: 100%; }
.tx-btn--icon .tx-btn__inner { width: 2.6rem; height: 2.6rem; padding: 0; }

/* ------------------------------------------------------------
   Keycaps — physical keys with walls, top sheen and press travel
   Markup: <span class="keycap keycap--md">fn</span>
           <span class="keycap keycap--teal keycap--lg">ctrl + fn</span>
   ------------------------------------------------------------ */
.keycap {
  --cap-hi: #46464a;
  --cap-lo: #232326;
  --cap-wall: #0f0f11;
  --cap-edge: rgba(255, 255, 255, 0.3);
  --cap-text: #f7f6f5;
  --cap-glow: rgba(255, 255, 255, 0.35);
  --cap-lift: 3px;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--cap-text);
  border-radius: 9px;
  background: var(--cap-lo);
  box-shadow:
    inset 0 1px 0 var(--cap-edge),
    inset 0 -1px 1px rgba(0, 0, 0, 0.45),
    inset 1px 0 0 rgba(255, 255, 255, 0.08),
    inset -1px 0 0 rgba(0, 0, 0, 0.3),
    0 var(--cap-lift) 0 var(--cap-wall),
    0 calc(var(--cap-lift) + 1px) 2px rgba(0, 0, 0, 0.35),
    0 calc(var(--cap-lift) + 7px) 14px -4px rgba(8, 10, 10, 0.4);
  transition:
    transform 0.1s cubic-bezier(0.3, 0.7, 0.4, 1),
    box-shadow 0.1s cubic-bezier(0.3, 0.7, 0.4, 1),
    text-shadow 0.15s ease;
  user-select: none;
  -webkit-user-select: none;
}
/* concave top-face sheen removed */
/* pressed: key travels down, backlight blooms */
.keycap:active,
.keycap.is-pressed {
  transform: translateY(var(--cap-lift));
  box-shadow:
    inset 0 1px 0 var(--cap-edge),
    inset 0 -1px 1px rgba(0, 0, 0, 0.45),
    inset 1px 0 0 rgba(255, 255, 255, 0.08),
    inset -1px 0 0 rgba(0, 0, 0, 0.3),
    0 0 0 var(--cap-wall),
    0 1px 2px rgba(0, 0, 0, 0.3),
    0 0 22px var(--cap-glow);
  text-shadow: 0 0 10px var(--cap-glow), 0 0 2px rgba(255, 255, 255, 0.6);
}

.keycap--teal {
  --cap-hi: #106e5e;
  --cap-lo: #03423a;
  --cap-wall: #011f1a;
  --cap-edge: rgba(190, 255, 240, 0.35);
  --cap-glow: rgba(148, 210, 198, 0.65);
}

.keycap--md { min-width: 2.5rem; height: 2.5rem; padding: 0 0.7rem; font-size: 0.85rem; }
.keycap--lg { min-width: 3.25rem; height: 3.1rem; padding: 0 1.1rem; font-size: 1rem; border-radius: 11px; }

/* Key combos: separate physical keys joined by a plus */
.keycap-combo {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}
.keycap-plus {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 500;
  color: #6f7976;
  user-select: none;
}

/* Raised porcelain chip that houses a keycap + label (WisprFlow-style) */
.key-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.7rem 1.15rem 0.85rem 0.8rem;
  border-radius: 1.15rem;
  background: #f7f4f2;
  border: 1px solid rgba(28, 27, 27, 0.07);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.9),
    0 2px 6px rgba(28, 27, 27, 0.05),
    0 14px 28px -14px rgba(0, 54, 48, 0.22);
}

/* ------------------------------------------------------------
   Glow card: slow conic teal/lavender halo behind a card
   Apply to an element that already has a border-radius + bg.
   ------------------------------------------------------------ */
@property --glow-angle {
  syntax: '<angle>';
  inherits: false;
  initial-value: 0deg;
}
.glow-card {
  position: relative;
  isolation: isolate;
}
.glow-card::before {
  content: "";
  position: absolute;
  inset: -3px;
  z-index: -1;
  border-radius: inherit;
  background: conic-gradient(
    from var(--glow-angle),
    rgba(148, 210, 198, 0.55),
    rgba(240, 215, 255, 0.5),
    rgba(3, 79, 70, 0.35),
    rgba(148, 210, 198, 0.55)
  );
  filter: blur(12px);
  opacity: 0.55;
  animation: glow-spin 10s linear infinite;
}
@keyframes glow-spin {
  to { --glow-angle: 360deg; }
}
@media (prefers-reduced-motion: reduce) {
  .glow-card::before { animation: none; }
}

/* Staggered scroll reveal (opt-in via data-stagger on a grid/list) */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s cubic-bezier(0.16, 1, 0.3, 1), transform 0.7s cubic-bezier(0.16, 1, 0.3, 1);
  transition-delay: var(--stagger-delay, 0ms);
}
[data-stagger].is-revealed > * {
  opacity: 1;
  transform: translateY(0);
}
@media (prefers-reduced-motion: reduce) {
  [data-stagger] > * { opacity: 1; transform: none; transition: none; }
}

/* ------------------------------------------------------------
   Floating header: three separated pieces
   ------------------------------------------------------------ */
.floating-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  pointer-events: none;
}
.floating-header__row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  height: 5rem;
}
.floating-header__row > :last-child { justify-self: end; }
.floating-header .tx-btn,
.floating-header .brand-chip,
.floating-header .spotlight-nav { pointer-events: auto; }

.brand-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  justify-self: start;
  padding: 0.4rem 1.1rem 0.4rem 0.55rem;
  border-radius: 9999px;
  text-decoration: none;
  background: rgba(255, 255, 255, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid rgba(255, 255, 255, 0.6);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 6px 18px -8px rgba(0, 54, 48, 0.3);
  transition: box-shadow 0.2s ease;
}
.brand-chip:hover { box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.85), 0 8px 22px -8px rgba(0, 54, 48, 0.4); }

/* ------------------------------------------------------------
   Spotlight nav — dark pill, mouse-tracked underlight,
   ambient glow resting under the active tab
   ------------------------------------------------------------ */
.spotlight-nav {
  position: relative;
  overflow: hidden;
  border-radius: 9999px;
  height: 2.9rem;
  background: #0d1a15;
  border: 1px solid rgba(255, 255, 255, 0.09);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    inset 0 -6px 12px -6px rgba(0, 0, 0, 0.6),
    0 10px 30px -10px rgba(0, 20, 17, 0.55);
}
.spotlight-nav ul {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  height: 100%;
  margin: 0;
  padding: 0 0.5rem;
  list-style: none;
}
.spotlight-nav li { height: 100%; display: flex; align-items: center; }
.spotlight-nav a {
  display: inline-flex;
  align-items: center;
  height: 100%;
  padding: 0 1.15rem;
  font-family: 'Manrope', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 9999px;
  color: rgba(255, 255, 255, 0.62);
  transition: color 0.2s ease;
}
.spotlight-nav a:hover { color: #fff; }
.spotlight-nav a[data-active] { color: #fff; }
.spotlight-nav a:focus-visible {
  outline: 2px solid rgba(148, 210, 198, 0.7);
  outline-offset: -6px;
}
/* spotlight and ambient indicators removed */

/* Mobile: nav pill is hidden; let brand chip and CTA share the row */
@media (max-width: 767px) {
  .floating-header .floating-header__row {
    display: flex;
    justify-content: space-between;
    padding-left: 1rem !important;  /* beat the px-container-padding utility */
    padding-right: 1rem !important;
  }
}
@media (max-width: 480px) {
  .tx-btn--sm .tx-btn__inner { padding: 0.55rem 1rem; font-size: 0.85rem; }
  .brand-chip { padding-right: 0.8rem; gap: 0.45rem; }
  .brand-chip span { font-size: 1rem; }
}

@media (prefers-reduced-motion: reduce) {
  .tx-btn,
  .keycap { transition: none; }
  .tx-btn:hover { transform: none; }
}