@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@400;500;600;700;800&family=IBM+Plex+Sans+Arabic:wght@300;400;500;600&display=swap');

:root {
  color-scheme: dark;

  --brand-teal: #30D2BE;
  --brand-green: #0BA360;
  --brand-navy: #0F2027;
  --brand-navy-2: #203A43;
  --brand-navy-3: #2C5364;

  --bg-base: #0B1D24;
  --bg-base-2: #122C35;
  --bg-base-3: #1B3942;
  --bg-surface: rgba(255, 255, 255, 0.05);
  --bg-surface-strong: rgba(255, 255, 255, 0.08);
  --bg-elevated: rgba(10, 24, 31, 0.6);
  --surface-border: rgba(255, 255, 255, 0.15);
  --surface-border-strong: rgba(255, 255, 255, 0.22);
  --surface-shadow: rgba(2, 11, 16, 0.42);
  --surface-shadow-glow: rgba(48, 210, 190, 0.12);

  --text-primary: #F4F7F8;
  --text-secondary: rgba(244, 247, 248, 0.76);
  --text-tertiary: rgba(244, 247, 248, 0.72);
  --text-inverse: #0F2027;

  --gradient-primary: linear-gradient(135deg, #0BA360 0%, #30D2BE 100%);
  --gradient-hero: linear-gradient(180deg, #0F2027 0%, #203A43 50%, #2C5364 100%);
  --gradient-ambient: radial-gradient(circle at 20% 30%, rgba(48, 210, 190, 0.2), transparent 32%), radial-gradient(circle at 80% 70%, rgba(11, 163, 96, 0.18), transparent 28%);

  --orb-a: rgba(48, 210, 190, 0.18);
  --orb-b: rgba(11, 163, 96, 0.14);
  --orb-c: rgba(104, 179, 255, 0.08);

  --glass-blur: 18px;
  --glass-border-width: 1px;

  --shadow-soft: 0 22px 46px rgba(0, 0, 0, 0.22), 0 0 36px rgba(48, 210, 190, 0.08);
  --shadow-strong: 0 28px 72px rgba(0, 0, 0, 0.26), 0 0 60px rgba(48, 210, 190, 0.12);

  --radius-xs: 10px;
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --radius-xl: 36px;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --container-width: 1200px;
  --section-padding: 96px 0;

  --ease-standard: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-emphasized: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.2, 0.8, 0.2, 1);

  --transition-fast: 180ms var(--ease-standard);
  --transition-medium: 320ms var(--ease-standard);
  --transition-slow: 520ms var(--ease-emphasized);

  --font-heading: 'Poppins', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
}

html[data-theme='light'] {
  color-scheme: light;

  --bg-base: #FAFBFB;
  --bg-base-2: #EEF3F2;
  --bg-base-3: #E4EFED;
  --bg-surface: rgba(255, 255, 255, 0.55);
  --bg-surface-strong: rgba(255, 255, 255, 0.7);
  --bg-elevated: rgba(255, 255, 255, 0.75);
  --surface-border: rgba(48, 210, 190, 0.2);
  --surface-border-strong: rgba(48, 210, 190, 0.28);
  --surface-shadow: rgba(16, 43, 48, 0.12);
  --surface-shadow-glow: rgba(48, 210, 190, 0.12);

  --text-primary: #0F2027;
  --text-secondary: rgba(15, 32, 39, 0.76);
  --text-tertiary: rgba(15, 32, 39, 0.68);
  --text-inverse: #F4F7F8;

  --gradient-hero: linear-gradient(180deg, #F7F9F9 0%, #EDF5F4 40%, #E4EFED 100%);
  --gradient-ambient: radial-gradient(circle at 18% 22%, rgba(48, 210, 190, 0.22), transparent 30%), radial-gradient(circle at 78% 68%, rgba(11, 163, 96, 0.16), transparent 26%);

  --orb-a: rgba(48, 210, 190, 0.2);
  --orb-b: rgba(11, 163, 96, 0.14);
  --orb-c: rgba(105, 179, 255, 0.1);

  --shadow-soft: 0 18px 42px rgba(14, 34, 38, 0.12), 0 0 28px rgba(48, 210, 190, 0.08);
  --shadow-strong: 0 24px 60px rgba(14, 34, 38, 0.16), 0 0 42px rgba(48, 210, 190, 0.12);
}

html[lang='ar'] {
  --font-heading: 'Cairo', 'IBM Plex Sans Arabic', 'Segoe UI', sans-serif;
  --font-body: 'IBM Plex Sans Arabic', 'Cairo', 'Segoe UI', sans-serif;
  --arabic-line-height: 1.9;
}

/* ─── Arabic global resets ─────────────────────────────────────────────────── */

html[lang='ar'] body {
  letter-spacing: 0;
  line-height: var(--arabic-line-height);
  /* Ensure words never break across letter boundaries in Arabic */
  word-break: normal;
  overflow-wrap: break-word;
}

html[lang='ar'] h1,
html[lang='ar'] h2,
html[lang='ar'] h3,
html[lang='ar'] h4,
html[lang='ar'] h5,
html[lang='ar'] h6 {
  letter-spacing: 0;
  line-height: 1.35;
  word-break: normal;
  overflow-wrap: break-word;
}

html[lang='ar'] p {
  line-height: var(--arabic-line-height);
  word-break: normal;
  overflow-wrap: break-word;
}

html[lang='ar'] .eyebrow {
  letter-spacing: 0;
  line-height: 1.35;
}

html[lang='ar'] button,
html[lang='ar'] .button-primary,
html[lang='ar'] .button-secondary,
html[lang='ar'] .demo-button {
  letter-spacing: 0;
  line-height: 1.45;
}

/* ─── RTL layout corrections ───────────────────────────────────────────────── */

/* Flex children: prevent collapsing to 0 in RTL */
html[dir='rtl'] .hero-copy-block,
html[dir='rtl'] .hero-message-block,
html[dir='rtl'] .presentation-panel,
html[dir='rtl'] .presentation-meta,
html[dir='rtl'] .problem-header,
html[dir='rtl'] .solution-header {
  min-width: 0;
  text-align: start;
}

/* RTL: flip hero content alignment */
html[dir='rtl'] .hero-content {
  align-items: flex-end;
}

/* RTL: navigation mobile dropdown */
html[dir='rtl'] .nav-menu {
  align-items: flex-end;
}

/* RTL: footer bottom bar */
html[dir='rtl'] .footer-bottom {
  flex-direction: row-reverse;
}

/* RTL: modal action buttons */
html[dir='rtl'] .modal-actions,
html[dir='rtl'] .quote-actions {
  justify-content: flex-start;
}

/* Footer tagline: allow natural width in Arabic */
html[dir='rtl'] .footer-tagline {
  max-width: none;
}

/* ─── Light mode contrast corrections ─────────────────────────────────────── */

/* Ensure button-secondary reads in light mode */
html[data-theme='light'] .button-secondary {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(15, 32, 39, 0.18);
  color: var(--text-primary);
}

html[data-theme='light'] .button-secondary:hover {
  background: rgba(0, 0, 0, 0.07);
  border-color: rgba(15, 32, 39, 0.26);
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme='dark']) {
    color-scheme: light;

    --bg-base: #FAFBFB;
    --bg-base-2: #EEF3F2;
    --bg-base-3: #E4EFED;
    --bg-surface: rgba(255, 255, 255, 0.55);
    --bg-surface-strong: rgba(255, 255, 255, 0.7);
    --bg-elevated: rgba(255, 255, 255, 0.75);
    --surface-border: rgba(48, 210, 190, 0.2);
    --surface-border-strong: rgba(48, 210, 190, 0.28);
    --surface-shadow: rgba(16, 43, 48, 0.12);
    --surface-shadow-glow: rgba(48, 210, 190, 0.12);
    --text-primary: #0F2027;
    --text-secondary: rgba(15, 32, 39, 0.76);
    --text-tertiary: rgba(15, 32, 39, 0.68);
    --text-inverse: #F4F7F8;
    --gradient-hero: linear-gradient(180deg, #F7F9F9 0%, #EDF5F4 40%, #E4EFED 100%);
    --gradient-ambient: radial-gradient(circle at 18% 22%, rgba(48, 210, 190, 0.22), transparent 30%), radial-gradient(circle at 78% 68%, rgba(11, 163, 96, 0.16), transparent 26%);
    --orb-a: rgba(48, 210, 190, 0.2);
    --orb-b: rgba(11, 163, 96, 0.14);
    --orb-c: rgba(105, 179, 255, 0.1);
    --shadow-soft: 0 18px 42px rgba(14, 34, 38, 0.12), 0 0 28px rgba(48, 210, 190, 0.08);
    --shadow-strong: 0 24px 60px rgba(14, 34, 38, 0.16), 0 0 42px rgba(48, 210, 190, 0.12);
  }
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  background: var(--bg-base);
  overflow-x: hidden;
}

body {
  min-height: 100vh;
  max-width: 100vw;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  background:
    linear-gradient(180deg, var(--bg-base) 0%, var(--bg-base-2) 42%, var(--bg-base-3) 100%);
  overflow-x: hidden;
  transition: background var(--transition-medium), color var(--transition-medium);
}

html, body, .page-shell, .site-main, .section, .page-hero {
  max-width: 100%;
}

body::before,
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: -2;
}

body::before {
  background:
    radial-gradient(120px 120px at 18% 18%, var(--orb-a), transparent 62%),
    radial-gradient(150px 150px at 78% 68%, var(--orb-b), transparent 58%),
    radial-gradient(180px 180px at 50% 50%, var(--orb-c), transparent 52%);
  filter: blur(45px);
  opacity: 0.9;
}

body::after {
  background: linear-gradient(120deg, rgba(255, 255, 255, 0.08), transparent 40%, rgba(255, 255, 255, 0.02) 60%, transparent 100%);
  opacity: 0.9;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

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

ul,
ol {
  list-style: none;
}

:focus-visible {
  outline: 2px solid var(--brand-teal);
  outline-offset: 3px;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  color: var(--text-primary);
  line-height: 1.04;
  letter-spacing: -0.045em;
  font-weight: 700;
  margin: 0 0 0.7em;
}

h1 {
  font-size: clamp(2.9rem, 6vw, 5.4rem);
}

h2 {
  font-size: clamp(2.3rem, 4vw, 3.5rem);
}

h3 {
  font-size: clamp(1.3rem, 2vw, 1.8rem);
}

p {
  color: var(--text-secondary);
  font-size: 1.02rem;
  line-height: 1.8;
}

small,
.caption {
  color: var(--text-tertiary);
  font-size: 0.76rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.ltr-number {
  direction: ltr;
  unicode-bidi: isolate;
  display: inline-block;
  white-space: nowrap;
}

.container {
  width: min(var(--container-width), calc(100% - 28px));
  margin: 0 auto;
}

.section {
  padding: var(--section-padding);
}

@media (max-width: 480px) {
  .container {
    width: min(var(--container-width), calc(100% - 20px));
  }

  .section {
    padding: clamp(56px, 18vw, 88px) 0;
  }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.74rem;
  line-height: 1;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-teal);
  font-weight: 700;
}

.gradient-text,
.gradient-accent {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.glass-panel {
  position: relative;
  background: linear-gradient(180deg, var(--bg-surface) 0%, rgba(255, 255, 255, 0.02) 100%);
  border: var(--glass-border-width) solid var(--surface-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
}

html[data-theme='light'] .glass-panel {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(255, 255, 255, 0.5));
  border-color: rgba(48, 210, 190, 0.18);
  box-shadow: var(--shadow-soft);
}

.theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 46px;
  height: 46px;
  border-radius: 999px;
  border: 1px solid var(--surface-border);
  background: var(--bg-surface);
  box-shadow: var(--shadow-soft);
  color: var(--text-primary);
  cursor: pointer;
  transition: transform var(--transition-medium), background var(--transition-medium), border-color var(--transition-medium), box-shadow var(--transition-medium);
}

.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: var(--surface-border-strong);
}

.site-main {
  position: relative;
  z-index: 1;
}