/* ================================
   0. CSS Custom Properties
   ================================ */
:root {
  --color-accent: #1A5CFF;
  --color-accent-dark: #1248D6;
  --color-dark: #0D0D0D;
  --color-light: #FAFAFA;
  --color-tinted: #EEF3FF;
  --color-muted: #666666;
  --color-border: #E0E0E0;
  --color-white: #FFFFFF;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --nav-height: 68px;
  --section-padding: 5rem 0;
  --container-max: 1200px;
  --container-gutter: 1.5rem;
  --radius: 12px;

  --transition: 200ms ease;
  --transition-slow: 400ms ease;
}

/* ================================
   1. Reset / Base
   ================================ */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-main);
  color: var(--color-dark);
  background: var(--color-light);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

ul {
  list-style: none;
}

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

em {
  font-style: normal;
  color: var(--color-accent);
}

/* ================================
   2. Layout Utilities
   ================================ */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-gutter);
}

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

.section--light {
  background: var(--color-light);
}

.section--tinted {
  background: var(--color-tinted);
}

.section--dark {
  background: var(--color-dark);
  color: var(--color-white);
}

/* ================================
   3. Typography
   ================================ */
.section__label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__label--light {
  color: rgba(255, 255, 255, 0.6);
}

.section__header {
  margin-bottom: 3rem;
}

.section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* ================================
   4. Buttons
   ================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
  border: 2px solid transparent;
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-dark);
  border-color: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(26, 92, 255, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
  border-color: var(--color-white);
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-2px);
}

/* ================================
   5. Navigation
   ================================ */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-white);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.nav.scrolled {
  border-color: var(--color-border);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.06);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
}

.nav__logo {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--color-dark);
  flex-shrink: 0;
}

.nav__links {
  display: none;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-muted);
  transition: color var(--transition);
}

.nav__link:hover,
.nav__link.active {
  color: var(--color-dark);
}

.nav__link--cta {
  background: var(--color-accent);
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  font-weight: 700;
  transition: background var(--transition), transform var(--transition);
}

.nav__link--cta:hover {
  background: var(--color-accent-dark);
  transform: translateY(-1px);
}

.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.lang-btn {
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-main);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--color-muted);
  padding: 0.2rem 0.15rem;
  transition: color var(--transition);
}

.lang-btn:hover {
  color: var(--color-dark);
}

.lang-btn--active {
  color: var(--color-accent);
}

.lang-divider {
  font-size: 0.65rem;
  color: var(--color-border);
  user-select: none;
}

.nav__hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  width: 40px;
  height: 40px;
}

.nav__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-dark);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* Hamburger open state */
.nav__hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.nav__hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav overlay */
.nav__links.open {
  display: flex;
  flex-direction: column;
  position: fixed;
  inset: var(--nav-height) 0 0 0;
  background: var(--color-white);
  padding: 2rem var(--container-gutter);
  gap: 1.5rem;
  align-items: flex-start;
}

/* ================================
   6. Hero
   ================================ */
.hero {
  min-height: calc(100vh - var(--nav-height));
  display: flex;
  align-items: center;
  background: var(--color-light);
  padding: 4rem 0;
  scroll-margin-top: var(--nav-height);
}

.hero__inner {
  display: grid;
  gap: 3rem;
  align-items: center;
}

.hero__eyebrow {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.hero__heading {
  font-size: clamp(2.4rem, 5vw, 4.5rem);
  font-weight: 800;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
  max-width: 44ch;
}

.hero__motto {
  font-size: clamp(1.15rem, 2.5vw, 1.55rem);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.45;
  margin-bottom: 2rem;
  max-width: 44ch;
}

.hero__photo {
  order: -1;
  display: flex;
  justify-content: center;
}

.hero__photo img {
  width: 260px;
  height: 260px;
  object-fit: cover;
  object-position: center top;
  border-radius: 50%;
  box-shadow: 0 0 0 6px var(--color-white), 0 0 0 10px var(--color-accent);
}

/* ================================
   7. About
   ================================ */
.about__body {
  max-width: 720px;
}

.about__body p {
  font-size: 1.1rem;
  line-height: 1.75;
  margin-bottom: 1.25rem;
  color: #333;
}

.about__body p:last-child {
  margin-bottom: 0;
}

/* ================================
   8. Services
   ================================ */
.services__grid {
  display: grid;
  gap: 1.5rem;
}

.card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.card__number {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.card__title {
  font-size: 1.25rem;
  font-weight: 800;
  margin-bottom: 0.75rem;
  line-height: 1.25;
}

.card__body {
  color: #444;
  line-height: 1.7;
  margin-bottom: 1rem;
}

.card__body:last-child {
  margin-bottom: 0;
}

.card__list {
  margin: 0.75rem 0;
}

.card__list li {
  position: relative;
  padding-left: 1.25rem;
  color: #444;
  line-height: 1.7;
  margin-bottom: 0.4rem;
}

.card__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.65em;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

.card__note {
  font-size: 0.875rem;
  color: var(--color-muted);
  font-style: italic;
  line-height: 1.6;
  border-left: 3px solid var(--color-accent);
  padding-left: 0.75rem;
  margin-top: 1rem;
}

/* ================================
   9. Pricing Callout
   ================================ */
.pricing-callout {
  margin-top: 3rem;
  padding: 1.75rem 2rem;
  background: var(--color-tinted);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.pricing-callout__label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.6rem;
}

.pricing-callout__body {
  font-size: 1rem;
  line-height: 1.7;
  color: #333;
  max-width: 680px;
}

/* ================================
   11. Value
   ================================ */
.pullquote {
  font-size: clamp(1.3rem, 3vw, 2rem);
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--color-dark);
  border-left: 5px solid var(--color-accent);
  padding-left: 1.5rem;
  margin-bottom: 3rem;
  max-width: 700px;
}

.value__grid {
  display: grid;
  gap: 1.25rem;
}

.value__item {
  display: flex;
  align-items: flex-start;
  gap: 0.875rem;
  padding: 1.25rem 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
}

.value__icon {
  display: inline-block;
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 0.15rem;
  background: var(--color-accent);
  border-radius: 50%;
  position: relative;
}

/* Checkmark via pseudo-element */
.value__icon::after {
  content: '';
  position: absolute;
  top: 4px;
  left: 5px;
  width: 5px;
  height: 9px;
  border: 2px solid white;
  border-top: none;
  border-left: none;
  transform: rotate(45deg);
}

.value__item p {
  font-size: 0.95rem;
  line-height: 1.6;
  color: #333;
}

/* ================================
   10. Experience
   ================================ */
.experience__intro {
  font-size: 1.1rem;
  color: #444;
  margin-bottom: 2.5rem;
  max-width: 640px;
}

.timeline {
  display: grid;
  gap: 0;
}

.timeline__item {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  position: relative;
  padding-bottom: 1.75rem;
}

.timeline__item:last-child {
  padding-bottom: 0;
}

/* Vertical line */
.timeline__item::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 20px;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent) 0%, rgba(26, 92, 255, 0.1) 100%);
}

.timeline__item:last-child::before {
  display: none;
}

.timeline__dot {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  background: var(--color-accent);
  border-radius: 50%;
  margin-top: 0.2em;
  box-shadow: 0 0 0 4px var(--color-tinted);
  position: relative;
  z-index: 1;
}

.timeline__item p {
  font-size: 1rem;
  line-height: 1.65;
  color: #333;
}

/* ================================
   11. Who I Help
   ================================ */
.who__grid {
  display: grid;
  gap: 1rem;
}

.who__item {
  padding: 1.25rem 1.75rem;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-dark);
  text-align: center;
  transition: background var(--transition), color var(--transition), transform var(--transition);
}

.who__item:hover {
  background: var(--color-accent);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* ================================
   12. Contact / Footer
   ================================ */
.contact__inner {
  padding: 5rem 0 4rem;
}

.contact__title {
  font-size: clamp(3rem, 7vw, 6rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.04em;
  margin: 0.5rem 0 1rem;
}

.contact__sub {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.65);
  margin-bottom: 2.5rem;
}

.contact__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem 0;
}

.footer p {
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.35);
}

/* ================================
   13. Scroll Reveal Animations
   ================================ */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.reveal--right {
  transform: translateY(0) translateX(24px);
}

.reveal.visible {
  opacity: 1;
  transform: translate(0);
}

/* ================================
   14. Section scroll offset
   ================================ */
section[id] {
  scroll-margin-top: var(--nav-height);
}

/* ================================
   15. Media Queries — Tablet (768px+)
   ================================ */
@media (min-width: 768px) {
  :root {
    --container-gutter: 2.5rem;
  }

  .nav__links {
    display: flex;
  }

  .nav__hamburger {
    display: none;
  }

  .hero__inner {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }

  .hero__photo {
    order: 0;
  }

  .hero__photo img {
    width: 100%;
    height: auto;
    max-width: 460px;
    border-radius: 16px;
    box-shadow: -8px 8px 0 var(--color-accent);
  }

  .services__grid {
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
  }

  .value__grid {
    grid-template-columns: 1fr 1fr;
  }

  .who__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ================================
   16. Media Queries — Desktop (1024px+)
   ================================ */
@media (min-width: 1024px) {
  :root {
    --section-padding: 7rem 0;
  }

  .hero {
    padding: 0;
  }

  .hero__photo img {
    max-width: 520px;
  }

  .who__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}