/* ============================================================
   RONZA CLINIC — Base & Foundations
   ============================================================ */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-arabic);
  font-size: var(--fs-body);
  font-weight: var(--fw-body);
  line-height: 1.8;
  color: var(--ronza-text);
  background-color: var(--ronza-cream);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }
h1, h2, h3, h4, p { margin: 0; }

h1, h2, h3, h4 {
  font-weight: var(--fw-heading);
  line-height: 1.35;
  letter-spacing: -0.01em;
}

::selection { background: var(--ronza-blush); color: var(--ronza-deep); }

/* ---------- Serif English / Editorial numbers ---------- */
.serif-en {
  font-family: var(--font-serif-en);
  font-weight: 500;
  letter-spacing: .02em;
}

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

/* ---------- Section scaffolding ---------- */
.section { padding-block: var(--section-y); position: relative; }
.section--white { background: var(--ronza-white); }
.section--blush { background: linear-gradient(180deg, var(--ronza-blush-soft), var(--ronza-white)); }

.section-head { max-width: 720px; margin-bottom: clamp(16px, 2.4vw, 26px); }
.section-head--center { margin-inline: auto; text-align: center; }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--fs-tiny);
  font-weight: var(--fw-subheading);
  letter-spacing: .14em;
  color: var(--ronza-deep);
  text-transform: uppercase;
  margin-bottom: var(--sp-3);
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--ronza-primary);
}
.eyebrow--center::after {
  content: "";
  width: 28px; height: 1px;
  background: var(--ronza-primary);
}

.section-title { font-size: var(--fs-h2); color: var(--ronza-text); }
.section-sub {
  color: var(--ronza-muted);
  margin-top: var(--sp-3);
  max-width: 60ch;
}
.section-head--center .section-sub { margin-inline: auto; }

/* ============================================================
   Buttons
   ============================================================ */
.btn {
  --btn-bg: var(--ronza-primary);
  --btn-fg: #fff;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  min-height: 52px;
  padding: 12px 32px;
  border: 1px solid transparent;
  border-radius: var(--radius-button);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-family: inherit;
  font-size: var(--fs-small);
  font-weight: var(--fw-subheading);
  letter-spacing: .02em;
  white-space: nowrap;
  transition:
    transform var(--dur-fast) var(--ease-lux),
    box-shadow var(--dur-fast) var(--ease-lux),
    background-color var(--dur-fast) var(--ease-lux),
    color var(--dur-fast) var(--ease-lux),
    border-color var(--dur-fast) var(--ease-lux);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn:focus-visible,
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--ronza-deep);
  outline-offset: 3px;
}

.btn--primary { box-shadow: var(--shadow-cta); }
.btn--primary:hover { background: var(--ronza-deep); }

.btn--ghost {
  --btn-bg: transparent;
  --btn-fg: var(--ronza-deep);
  border-color: var(--ronza-border-strong);
}
.btn--ghost:hover { border-color: var(--ronza-primary); background: var(--ronza-blush-soft); }

.btn--light {
  --btn-bg: var(--ronza-white);
  --btn-fg: var(--ronza-deep);
  box-shadow: var(--shadow-md);
}
.btn--light:hover { --btn-fg: var(--ronza-text); }

.btn--sm { min-height: 42px; padding: 8px 22px; font-size: var(--fs-tiny); }
.btn--block { width: 100%; }

.btn .arrow { transition: transform var(--dur-fast) var(--ease-lux); }
.btn:hover .arrow { transform: translateX(-4px); } /* RTL: السهم لليسار */

/* ---------- Text link with arrow ---------- */
.link-more {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  color: var(--ronza-deep);
  font-weight: var(--fw-subheading);
  font-size: var(--fs-small);
  transition: gap var(--dur-fast) var(--ease-lux);
}
.link-more:hover { gap: var(--sp-3); }

/* ============================================================
   Reveal on scroll
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity var(--dur-slow) var(--ease-lux),
    transform var(--dur-slow) var(--ease-lux);
  transition-delay: var(--reveal-delay, 0s);
  will-change: opacity, transform;
}
.reveal.is-visible { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .001s !important; }
}

/* ============================================================
   Accessibility helpers
   ============================================================ */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute;
  inset-inline-start: 16px; top: -60px;
  z-index: 200;
  background: var(--ronza-deep); color: #fff;
  padding: 10px 18px; border-radius: 10px;
  transition: top var(--dur-fast) var(--ease-lux);
}
.skip-link:focus { top: 12px; }