/* ============================================================
   Nicolas Cliche — Site Styles
   Clean, minimal, Apple-inspired professional design
   ============================================================ */

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

:root {
  --color-bg: #fafafa;
  --color-surface: #ffffff;
  --color-text: #1d1d1f;
  --color-text-secondary: #6e6e73;
  --color-accent: #0071e3;
  --color-accent-hover: #0077ed;
  --color-border: #d2d2d7;
  --color-dark-bg: #1d1d1f;
  --color-dark-text: #f5f5f7;
  --font-display: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-body: 'SF Pro Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 980px;
  --max-width-wide: 1200px;
  --section-padding: 120px 24px;
  --transition: 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a:hover { color: var(--color-accent-hover); }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.container--wide {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 24px;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.12;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  margin-bottom: 0.6em;
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  margin-bottom: 0.5em;
}

p {
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.lead {
  font-size: clamp(1.125rem, 2vw, 1.3125rem);
  line-height: 1.5;
  color: var(--color-text-secondary);
  max-width: 680px;
}

.overline {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  display: block;
  margin-bottom: 12px;
}

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(250, 250, 250, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  height: 52px;
  transition: background var(--transition);
}

.nav__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.125rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav__logo:hover { color: var(--color-text); }

.nav__links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav__links a {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  font-weight: 400;
  transition: color var(--transition);
}

.nav__links a:hover { color: var(--color-text); }
.nav__links a.active { color: var(--color-text); font-weight: 500; }

.nav__lang {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  transition: color var(--transition);
}

.nav__lang:hover {
  color: var(--color-text);
}

/* Mobile nav */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 28px;
  height: 28px;
  position: relative;
}

.nav__toggle span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--color-text);
  position: absolute;
  left: 5px;
  transition: all var(--transition);
}

.nav__toggle span:nth-child(1) { top: 9px; }
.nav__toggle span:nth-child(2) { top: 14px; }
.nav__toggle span:nth-child(3) { top: 19px; }

.nav__toggle.open span:nth-child(1) { top: 14px; transform: rotate(45deg); }
.nav__toggle.open span:nth-child(2) { opacity: 0; }
.nav__toggle.open span:nth-child(3) { top: 14px; transform: rotate(-45deg); }

@media (max-width: 768px) {
  .nav {
    background: #fafafa;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .nav__toggle { display: block; }

  .nav__menu {
    position: fixed;
    top: 52px;
    left: 0;
    right: 0;
    bottom: 0;
    background: #fafafa;
    padding: 40px 24px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
  }

  .nav__menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__links {
    flex-direction: column;
    gap: 0;
    align-items: flex-start;
  }

  .nav__links li { width: 100%; }

  .nav__links a {
    display: block;
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--color-text);
    padding: 16px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    font-family: var(--font-display);
    letter-spacing: -0.02em;
  }

  .nav__links li:last-child a {
    border-bottom: none;
  }

  .nav__lang {
    margin-top: 32px;
    font-size: 0.875rem;
    padding: 8px 20px;
  }
}

/* --- Hero Section --- */
.hero {
  padding: 160px 24px 100px;
  background: var(--color-bg);
}

.hero__row {
  display: flex;
  align-items: center;
  gap: 64px;
}

.hero__content {
  flex: 1;
  min-width: 0;
}

.hero__overline { margin-bottom: 20px; }

.hero h1 {
  margin-bottom: 24px;
  max-width: 680px;
}

.hero .lead {
  margin: 0 0 40px;
}

.hero__cta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero__visual {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 280px;
}

.hero__visual img {
  display: block;
  width: 240px;
  height: auto;
  border-radius: 12px;
}

.hero__stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-top: 64px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.hero__stat-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.03em;
  line-height: 1;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-secondary);
  margin-top: 8px;
}

@media (max-width: 768px) {
  .hero { padding: 120px 24px 60px; }
  .hero__row {
    flex-direction: column;
    gap: 40px;
    text-align: center;
  }
  .hero__content { text-align: center; }
  .hero .lead { margin-left: auto; margin-right: auto; }
  .hero__cta { justify-content: center; }
  .hero__visual img { width: 180px; margin: 0 auto; }
  .hero__stats { gap: 24px; flex-wrap: wrap; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-size: 0.9375rem;
  font-weight: 400;
  padding: 12px 24px;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  line-height: 1.2;
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn--secondary {
  background: transparent;
  color: var(--color-accent);
  padding: 12px 0;
}

.btn--secondary:hover { color: var(--color-accent-hover); }

.btn--secondary::after {
  content: '\203A';
  font-size: 1.2em;
  transition: transform var(--transition);
}

.btn--secondary:hover::after { transform: translateX(4px); }

.btn--dark {
  background: var(--color-text);
  color: #fff;
}

.btn--dark:hover { background: #333; color: #fff; }

/* --- Sections --- */
.section {
  padding: var(--section-padding);
}

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

.section--dark p { color: rgba(245, 245, 247, 0.7); }
.section--dark h2 { color: var(--color-dark-text); }

.section--gray { background: #f5f5f7; }

.section__header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 64px;
}

.section__header .overline { margin-bottom: 16px; }

/* --- Pillar / Feature Grid --- */
.pillars {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.pillar {
  padding: 48px 32px;
  background: var(--color-surface);
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: all var(--transition);
}

.pillar:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
}

.pillar__number {
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.pillar h3 { margin-bottom: 16px; }

.pillar p {
  font-size: 0.9375rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .pillars { grid-template-columns: 1fr; gap: 20px; }
  .pillar { padding: 36px 24px; }
}

/* --- About Preview (homepage) --- */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-preview__image {
  border-radius: 4px;
  overflow: hidden;
  aspect-ratio: 4/5;
}

.about-preview__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.6s ease;
}

.about-preview__image:hover img { filter: grayscale(0%); }

.about-preview__content h2 { margin-bottom: 24px; }

.about-preview__content p {
  margin-bottom: 16px;
}

.about-preview__content .btn { margin-top: 16px; }

@media (max-width: 768px) {
  .about-preview {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-preview__image {
    max-width: 400px;
    margin: 0 auto;
  }
}

/* --- Client Logos --- */
.logos-section {
  padding: 64px 24px;
  text-align: center;
}

.logos-section .overline {
  color: rgba(29, 29, 31, 0.4);
  margin-bottom: 32px;
  display: block;
}

.logos-grid {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  justify-content: center;
  gap: 48px;
  max-width: 1060px;
  margin: 0 auto;
}

.logos-grid img {
  height: 36px;
  width: auto;
  filter: grayscale(1) opacity(0.45);
  transition: filter 0.3s ease;
}

.logos-grid img:hover {
  filter: grayscale(0) opacity(1);
}

@media (max-width: 768px) {
  .logos-section { padding: 48px 24px; }
  .logos-grid {
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px 32px;
    max-width: 400px;
  }
  .logos-grid img { height: 26px; }
}

/* --- Testimonials --- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.testimonial {
  padding: 40px 32px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
}

.testimonial__quote {
  font-size: 1rem;
  line-height: 1.65;
  color: rgba(245, 245, 247, 0.8);
  flex: 1;
  margin-bottom: 24px;
}

.testimonial__quote::before {
  content: '\201C';
  display: block;
  font-size: 2.5rem;
  font-family: Georgia, serif;
  color: rgba(255, 255, 255, 0.15);
  line-height: 1;
  margin-bottom: 12px;
}

.testimonial__author {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-dark-text);
}

.testimonial__role {
  font-size: 0.8125rem;
  color: rgba(245, 245, 247, 0.5);
  margin-top: 2px;
}

@media (max-width: 768px) {
  .testimonials-grid { grid-template-columns: 1fr; }
}

/* --- CTA Section --- */
.cta-section {
  text-align: center;
  padding: 100px 24px;
  background: #f5f5f7;
}

.cta-section h2 { margin-bottom: 16px; }
.cta-section p { margin-bottom: 32px; }

/* --- Services Page --- */
.service-detail {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  padding: 48px 0;
  border-bottom: 1px solid var(--color-border);
}

.service-detail:last-child { border-bottom: none; }

.service-detail__number {
  font-family: var(--font-display);
  font-size: 4rem;
  font-weight: 700;
  color: rgba(0, 0, 0, 0.06);
  letter-spacing: -0.03em;
  line-height: 1;
}

.service-detail h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}

.service-detail p {
  margin-bottom: 12px;
}

.service-detail__list {
  margin-top: 16px;
  padding-left: 0;
  list-style: none;
}

.service-detail__list li {
  font-size: 0.9375rem;
  color: var(--color-text-secondary);
  padding: 8px 0;
  padding-left: 24px;
  position: relative;
}

.service-detail__list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 16px;
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
}

@media (max-width: 768px) {
  .service-detail {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .service-detail__number { font-size: 2.5rem; }
}

/* --- About Page --- */
.about-hero {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 80px;
  align-items: start;
  padding-top: 40px;
}

.about-hero__image {
  border-radius: 4px;
  overflow: hidden;
  position: sticky;
  top: 80px;
}

.about-hero__image img {
  width: 100%;
  filter: grayscale(100%);
}

.about-hero__content h1 { margin-bottom: 32px; }
.about-hero__content p { margin-bottom: 16px; }

.timeline {
  margin-top: 48px;
}

.timeline__item {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 32px;
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}

.timeline__year {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text);
}

.timeline__content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.timeline__content p {
  font-size: 0.875rem;
}

@media (max-width: 768px) {
  .about-hero {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .about-hero__image {
    position: static;
    max-width: 320px;
    order: -1;
  }
  .timeline__item {
    grid-template-columns: 1fr;
    gap: 8px;
  }
}

/* --- Education & Accomplishments --- */
.credentials {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 48px;
}

.credential-block h3 { margin-bottom: 24px; }

.credential-item {
  padding: 16px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.credential-item h4 {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-dark-text);
  margin-bottom: 4px;
}

.credential-item p {
  font-size: 0.8125rem;
  color: rgba(245, 245, 247, 0.5);
}

@media (max-width: 768px) {
  .credentials { grid-template-columns: 1fr; gap: 32px; }
}

/* --- Contact Page --- */
.contact-hero {
  text-align: center;
  padding-top: 40px;
}

.contact-hero h1 { margin-bottom: 16px; }
.contact-hero .lead { margin: 0 auto 48px; }

.contact-methods {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 800px;
  margin: 0 auto;
}

.contact-method {
  text-align: center;
  padding: 48px 24px;
  background: var(--color-surface);
  border-radius: 4px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  transition: all var(--transition);
}

.contact-method:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.06);
}

.contact-method__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f5f5f7;
  border-radius: 4px;
}

.contact-method__icon svg {
  width: 24px;
  height: 24px;
  stroke: var(--color-text);
}

.contact-method h3 {
  font-size: 1rem;
  margin-bottom: 8px;
}

.contact-method p {
  font-size: 0.875rem;
}

@media (max-width: 600px) {
  .contact-methods { grid-template-columns: 1fr; }
}

/* --- Footer --- */
.footer {
  padding: 48px 24px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer__inner {
  max-width: var(--max-width-wide);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.footer__copy {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.footer__links {
  display: flex;
  gap: 24px;
  list-style: none;
}

.footer__links a {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
}

.footer__links a:hover { color: var(--color-text); }

@media (max-width: 600px) {
  .footer__inner {
    flex-direction: column;
    text-align: center;
  }
}

/* --- Page Header (inner pages) --- */
.page-header {
  padding: 140px 24px 80px;
  text-align: center;
  background: var(--color-bg);
}

.page-header h1 { margin-bottom: 16px; }

.page-header .lead {
  margin: 0 auto;
}

/* --- Value Props (what you get) --- */
.value-props {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.value-prop {
  text-align: center;
  padding: 40px 24px;
}

.value-prop h3 {
  margin-bottom: 8px;
}

@media (max-width: 768px) {
  .value-props { grid-template-columns: 1fr; }
}

/* --- Fade-in animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}

/* --- Social links --- */
.social-links {
  display: flex;
  gap: 16px;
  margin-top: 24px;
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  transition: all var(--transition);
}

.social-links a:hover {
  background: rgba(255, 255, 255, 0.16);
}

.social-links svg {
  width: 18px;
  height: 18px;
  fill: var(--color-dark-text);
}

/* --- Skip link (accessibility) --- */
.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--color-accent);
  color: #fff;
  padding: 8px 16px;
  z-index: 9999;
  font-size: 0.875rem;
}

.skip-link:focus { top: 0; }

/* --- Tagline nowrap --- */
.tagline-nowrap {
  white-space: nowrap;
}

@media (max-width: 600px) {
  .tagline-nowrap {
    white-space: normal;
  }
}

/* --- Mobile refinements --- */
@media (max-width: 480px) {
  .hero { padding: 100px 16px 48px; }
  .hero h1 { font-size: 2rem; }
  .hero .lead { font-size: 1rem; }
  .hero__stats { gap: 16px; margin-top: 40px; padding-top: 32px; }
  .hero__stat-number { font-size: 1.8rem; }
  .section { padding: 64px 16px; }
  .section__header { margin-bottom: 40px; }
  .page-header { padding: 100px 16px 48px; }
  .page-header h1 { font-size: 2rem; }
  .cta-section { padding: 64px 16px; }
  .cta-section h2 { font-size: 1.5rem; }
  .pillar { padding: 28px 20px; }
  .about-preview__content h2 { font-size: 1.5rem; }
  .testimonial { padding: 28px 20px; }
  .service-detail__number { font-size: 2rem; }
  .contact-method { padding: 32px 16px; }
  .footer__inner { padding: 0 16px; }
}