/* =======================================================
   TEMA 4 — Blue Wave · base.css
   ======================================================= */

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

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

body {
  font-family: var(--font-family);
  font-size: var(--fs-body);
  font-weight: var(--fw-regular);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg-deep);
  background-image:
    radial-gradient(ellipse at 20% 0%, rgba(125, 211, 252, 0.18) 0%, transparent 55%),
    radial-gradient(ellipse at 100% 30%, rgba(56, 189, 248, 0.10) 0%, transparent 50%),
    var(--color-bg-deep);
  overflow-x: clip;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
@supports not (overflow-x: clip) { body { overflow-x: hidden; } }

img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--color-text);
}

::selection { background: var(--color-accent); color: #fff; }

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  position: relative;
}

/* ===== Eyebrow con ola decorativa ===== */
.eyebrow {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  padding: 0;
  background: none;
  border: 0;
  font-size: var(--fs-xs);
  font-weight: var(--fw-bold);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-brand);
  line-height: 1.2;
}
.eyebrow .eyebrow-text { display: inline-block; }
.eyebrow-wave {
  display: block;
  width: clamp(72px, 7vw, 96px);
  height: 10px;
  overflow: visible;
}
.eyebrow-wave path {
  fill: none;
  stroke: var(--color-accent);
  stroke-width: 2;
  stroke-linecap: round;
}
.no-js .eyebrow-wave path { stroke-dasharray: none; }

/* En heads centrados, la ola se alinea al centro del texto */
.section-head.center .eyebrow,
.cta-final .eyebrow {
  align-items: center;
}

/* Variant para fondos oscuros/azul (CTA, paneles) */
.eyebrow.on-wave { color: var(--color-text-on-wave); }
.eyebrow.on-wave .eyebrow-wave path { stroke: #fff; }

/* ===== Botones ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 26px;
  font-weight: var(--fw-semi);
  font-size: var(--fs-md);
  border-radius: var(--radius-pill);
  cursor: pointer;
  white-space: nowrap;
  transition:
    transform var(--dur-fast) var(--ease-out),
    box-shadow var(--dur-base) var(--ease-out),
    background var(--dur-base) var(--ease-out);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  color: #fff;
  background: var(--grad-accent);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover { box-shadow: 0 12px 32px rgba(14, 165, 233, .55), var(--glow-accent); }

.btn-ghost {
  color: var(--color-text);
  background: rgba(255,255,255,0.6);
  border: 1px solid rgba(15, 23, 42, 0.10);
  backdrop-filter: blur(var(--blur-sm));
  -webkit-backdrop-filter: blur(var(--blur-sm));
}
.btn-ghost:hover { background: #fff; border-color: rgba(15, 23, 42, 0.18); }

.btn-ghost.on-wave {
  color: #fff;
  background: rgba(255,255,255,0.16);
  border-color: rgba(255,255,255,0.40);
}
.btn-ghost.on-wave:hover { background: rgba(255,255,255,0.28); }

.btn-arrow svg { transition: transform var(--dur-fast) var(--ease-out); }
.btn-arrow:hover svg { transform: translateX(4px); }

/* ===== Section title ===== */
.section-title {
  font-size: var(--fs-display);
  margin: var(--space-3) 0 var(--space-5);
}
.section-title .accent {
  background: var(--grad-accent);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.section-lead {
  font-size: var(--fs-lead);
  color: var(--color-text-muted);
  max-width: 60ch;
}

/* ===== Glass cards ===== */
.glass {
  background: rgba(255, 255, 255, 0.65);
  border: 1px solid rgba(255, 255, 255, 0.85);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  box-shadow:
    0 16px 40px -12px rgba(15, 23, 42, 0.18),
    inset 0 1px 0 rgba(255, 255, 255, 0.9);
}
.glass.on-wave {
  background: rgba(255, 255, 255, 0.16);
  border-color: rgba(255, 255, 255, 0.35);
  box-shadow:
    0 30px 60px -18px rgba(0, 0, 0, 0.30),
    inset 0 1px 0 rgba(255, 255, 255, 0.45);
  backdrop-filter: blur(var(--blur-lg)) saturate(140%);
  -webkit-backdrop-filter: blur(var(--blur-lg)) saturate(140%);
  color: var(--color-text-on-wave);
}

/* ===== Reveal ===== */
.reveal { opacity: 0; transform: translateY(30px); will-change: transform, opacity; }
.no-js .reveal { opacity: 1; transform: none; }

/* ===== Reduced motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1 !important; transform: none !important; }
}