/* ==========================================
   AHMED ELSISY — BASE DESIGN SYSTEM & TOKENS
   ========================================== */

@import url('https://fonts.googleapis.com/css2?family=Alexandria:wght@300;400;500;600;700;800&family=Cairo:wght@300;400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@300;400;500;600;700;800&display=swap');

:root {
  /* ——— Color Palette: Deep Navy, Charcoal, Off-White ——— */
  --color-background: #0a111e;
  --color-surface:    #111a2e;
  --color-surface-hover: #18253f;
  --color-surface-elevated: #1a2742;
  --color-card:       #131e33;
  --color-text:       #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-muted:      #94a3b8;

  /* Accent: refined steel-sky — intentional, not generic medical blue */
  --color-accent:       #38bdf8;
  --color-accent-hover: #7dd3fc;
  --color-accent-subtle: rgba(56, 189, 248, 0.12);
  --color-accent-deep:   rgba(56, 189, 248, 0.06);

  --color-border:       rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.18);
  --color-dark-overlay: rgba(10, 17, 30, 0.88);

  /* ——— Typography ——— */
  --font-sans:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-arabic:  'Cairo', 'Alexandria', -apple-system, BlinkMacSystemFont, sans-serif;

  /* ——— Layout Containers ——— */
  --container-max:    1280px;
  --container-narrow: 840px;
  --container-fluid:  92%;

  /* ——— Radii ——— */
  --radius-sm:   8px;
  --radius-md:   14px;
  --radius-lg:   24px;
  --radius-pill: 9999px;

  /* ——— Spacing ——— */
  --space-xs: clamp(0.5rem, 1vw, 0.75rem);
  --space-sm: clamp(1rem, 2vw, 1.5rem);
  --space-md: clamp(2rem, 4vw, 3rem);
  --space-lg: clamp(3.5rem, 6vw, 5.5rem);
  --space-xl: clamp(5rem, 10vw, 8.5rem);

  /* ——— Transitions ——— */
  --transition-fast:   0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow:   0.7s cubic-bezier(0.16, 1, 0.3, 1);

  /* ——— Shadows ——— */
  --shadow-subtle: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
  --shadow-card:   0 20px 40px -15px rgba(0, 0, 0, 0.5);
  --shadow-glow:   0 0 40px rgba(56, 189, 248, 0.18);
}

/* ——— Base Resets ——— */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--color-background);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  line-height: 1.65;
  background-color: var(--color-background);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
}

/* ——— Accessibility: Focus Visible ——— */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, textarea, select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

ul[role="list"],
ol[role="list"] {
  list-style: none;
}

/* ——— Layout Utilities ——— */
.container {
  width: min(var(--container-fluid), var(--container-max));
  margin-inline: auto;
}

.container-narrow {
  width: min(var(--container-fluid), var(--container-narrow));
  margin-inline: auto;
}

.section-spacing {
  padding-block: var(--space-lg);
}

.section-spacing-lg {
  padding-block: var(--space-xl);
}

/* ——— Typography Hierarchy ——— */
.editorial-label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  font-weight: 600;
  display: inline-block;
  margin-bottom: 0.75rem;
}

[dir="rtl"] .editorial-label {
  letter-spacing: 0.05em;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 1.25rem;
  color: var(--color-text);
}

[dir="rtl"] .section-title {
  font-family: var(--font-arabic);
  letter-spacing: normal;
}

.narrative-statement {
  font-family: var(--font-heading);
  font-size: clamp(1.4rem, 2.8vw, 2.1rem);
  font-weight: 400;
  line-height: 1.35;
  color: var(--color-text-secondary);
}

[dir="rtl"] .narrative-statement {
  font-family: var(--font-arabic);
}

.massive-statement {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6.5vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

/* body-copy is a MODIFIER — apply to a container whose children need subdued styling */
.body-copy {
  font-size: clamp(1rem, 1.2vw, 1.15rem);
  color: var(--color-text-secondary);
  line-height: 1.78;
}

.body-copy p + p {
  margin-top: 1.25rem;
}

/* Keep links inside body-copy legible */
.body-copy a {
  color: var(--color-accent);
  text-decoration-line: underline;
  text-underline-offset: 3px;
}

.metric-number {
  font-family: var(--font-heading);
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  letter-spacing: -0.03em;
}

.metric-label {
  font-size: 0.9rem;
  color: var(--color-muted);
  font-weight: 500;
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.accent-text  { color: var(--color-accent); }
.text-muted   { color: var(--color-muted); }