/* ============================================
   Luke Rutley Ltd — Stylesheet
   ============================================ */

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

:root {
  --color-bg: #fafafa;
  --color-bg-alt: #f1f3f5;
  --color-surface: #ffffff;
  --color-text: #1a1a2e;
  --color-text-secondary: #555770;
  --color-accent: #2563eb;
  --color-accent-light: #dbeafe;
  --color-accent-dark: #1d4ed8;
  --color-border: #e2e5ea;
  --color-dot: #2563eb;
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.07);
  --shadow-lg: 0 12px 48px rgba(0,0,0,0.1);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --container: 1120px;
}

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul {
  list-style: none;
}

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

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 20px 0;
  transition: all var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 12px 0;
  box-shadow: var(--shadow-sm);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

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

.logo-dot {
  color: var(--color-dot);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

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

.nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-align: center;
}

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

.btn-primary:hover {
  background: var(--color-accent-dark);
  color: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  transform: translateY(-1px);
}

.btn-nav {
  background: var(--color-accent);
  color: #fff !important;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
}

.btn-nav:hover {
  background: var(--color-accent-dark);
  color: #fff !important;
  transform: translateY(-1px);
}

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 120px 0 80px;
  background: linear-gradient(160deg, #ffffff 0%, #f0f4ff 100%);
}

.hero-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.hero-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 20px;
  padding: 6px 14px;
  background: var(--color-accent-light);
  border-radius: 100px;
}

.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  color: var(--color-text);
}

.hero-sub {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 540px;
  margin-bottom: 36px;
}

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

.hero-image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image img {
  width: 380px;
  height: 380px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: var(--shadow-lg);
  border: 6px solid var(--color-surface);
}

/* --- Sections --- */
.section {
  padding: 100px 0;
}

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

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 48px;
  color: var(--color-text);
}

/* --- About --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-content p {
  color: var(--color-text-secondary);
  margin-bottom: 18px;
  font-size: 1.02rem;
}

.about-content strong {
  color: var(--color-text);
}

.credential-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 20px;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.credential-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.credential-card h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 14px;
}

.credential-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 8px;
}

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

.credential-detail {
  font-size: 0.88rem !important;
  color: var(--color-text-secondary) !important;
  font-style: italic;
}

.credential-list {
  list-style: none;
}

.credential-list li {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
  padding: 6px 0;
  padding-left: 18px;
  position: relative;
}

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

/* --- Expertise --- */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.expertise-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(24px);
}

.expertise-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.expertise-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.expertise-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent-light);
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  color: var(--color-accent);
}

.expertise-card h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.expertise-card p {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Sectors --- */
.sectors-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.sector-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  position: relative;
  overflow: hidden;
  transition: all var(--transition);
  opacity: 0;
  transform: translateY(24px);
}

.sector-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.sector-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.sector-number {
  font-size: 4rem;
  font-weight: 700;
  color: var(--color-accent-light);
  position: absolute;
  top: -8px;
  right: 16px;
  line-height: 1;
  user-select: none;
}

.sector-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 14px;
  letter-spacing: -0.01em;
}

.sector-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* --- Projects --- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
  opacity: 0;
  transform: translateY(24px);
}

.project-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.project-card:hover {
  color: var(--color-text);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

.project-image {
  overflow: hidden;
  height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  padding: 24px;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.5s ease;
}

.project-card:hover .project-image img {
  transform: scale(1.03);
}

.project-info {
  padding: 32px;
  flex: 1;
}

.project-info-full {
  padding: 40px 32px;
}

.project-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 14px;
}

.project-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.project-info p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: 16px;
}

.project-link {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-accent);
  transition: color var(--transition);
}

.project-card:hover .project-link {
  color: var(--color-accent-dark);
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 48px;
  align-items: start;
}

.contact-text {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.contact-text.revealed {
  opacity: 1;
  transform: translateY(0);
}

.contact-text p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 28px;
}

.contact-email {
  display: inline-block;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: 28px;
  transition: color var(--transition);
}

.contact-email:hover {
  color: var(--color-accent);
}

.social-links {
  display: flex;
  gap: 16px;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  color: var(--color-text-secondary);
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--color-accent);
  color: #fff;
  transform: translateY(-2px);
}

.contact-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 36px;
  box-shadow: var(--shadow-sm);
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.contact-card.revealed {
  opacity: 1;
  transform: translateY(0);
}

.contact-card h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.contact-card > p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.contact-card hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 20px 0;
}

.contact-detail {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 10px;
}

.contact-detail strong {
  display: inline-block;
  width: 70px;
  color: var(--color-text);
  font-weight: 600;
}

.contact-detail a {
  color: var(--color-accent);
}

/* --- Footer --- */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.6);
  padding: 40px 0;
}

.footer-container {
  text-align: center;
}

.footer p {
  font-size: 0.85rem;
}

.footer-sub {
  margin-top: 4px;
  font-size: 0.8rem !important;
  opacity: 0.5;
}

/* --- About content reveal --- */
.about-content {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease;
}

.about-content.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* --- Staggered animations --- */
.expertise-card:nth-child(1) { transition-delay: 0s; }
.expertise-card:nth-child(2) { transition-delay: 0.08s; }
.expertise-card:nth-child(3) { transition-delay: 0.16s; }
.expertise-card:nth-child(4) { transition-delay: 0.24s; }
.expertise-card:nth-child(5) { transition-delay: 0.32s; }
.expertise-card:nth-child(6) { transition-delay: 0.4s; }

.sector-card:nth-child(1) { transition-delay: 0s; }
.sector-card:nth-child(2) { transition-delay: 0.1s; }
.sector-card:nth-child(3) { transition-delay: 0.2s; }

.project-card:nth-child(1) { transition-delay: 0s; }
.project-card:nth-child(2) { transition-delay: 0.1s; }
.project-card:nth-child(3) { transition-delay: 0.2s; }

/* ============================================
   Responsive
   ============================================ */

@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-sub {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-image img {
    width: 280px;
    height: 280px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

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

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

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

  .projects-grid .project-card:first-child {
    grid-column: 1;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    background: var(--color-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 32px 40px;
    gap: 24px;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-toggle {
    display: flex;
    z-index: 101;
  }

  .hero {
    padding: 100px 0 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .section {
    padding: 72px 0;
  }

  .section-title {
    margin-bottom: 32px;
  }

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

  .hero-image img {
    width: 220px;
    height: 220px;
  }

  .contact-email {
    font-size: 1.15rem;
  }
}