/* ============================================
   Alexander Cameron Global - Stylesheet
   A minimal, professional design system
   ============================================ */

/* ----------------------------------------
   CSS Custom Properties (Design Tokens)
   ---------------------------------------- */
:root {
  /* Brand Colors */
  --color-primary: #ef6718;
  --color-primary-hover: #d55a14;
  --color-primary-light: rgba(239, 103, 24, 0.1);

  --color-background: #041f37;
  --color-background-light: #062a4a;
  --color-background-card: #0a2e4e;

  /* Neutral Colors */
  --color-text: #ffffff;
  --color-text-muted: #a8b8c8;
  --color-text-subtle: #6b7c8c;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-border-light: rgba(255, 255, 255, 0.05);

  /* Typography */
  --font-heading: "Playfair Display", Georgia, serif;
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;

  /* Font Sizes (fluid typography) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --text-base: clamp(1rem, 0.925rem + 0.375vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.375rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.625rem);
  --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2.25rem);
  --text-3xl: clamp(2rem, 1.5rem + 2.5vw, 3.5rem);
  --text-4xl: clamp(2.5rem, 1.75rem + 3.75vw, 4.5rem);

  /* Spacing Scale */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1200px;
  --container-padding: clamp(1rem, 5vw, 2rem);

  /* Effects */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.4);

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;

  /* Header */
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 400;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-text);
  text-decoration: none;
  border-radius: var(--radius-sm);
  z-index: 1000;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-md);
}

/* ----------------------------------------
   Typography
   ---------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 500;
  line-height: 1.2;
  color: var(--color-text);
}

h1 {
  font-size: var(--text-4xl);
}
h2 {
  font-size: var(--text-2xl);
}
h3 {
  font-size: var(--text-xl);
}
h4 {
  font-size: var(--text-lg);
}

p {
  margin-bottom: var(--space-md);
}

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

a:hover,
a:focus {
  color: var(--color-primary-hover);
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* ----------------------------------------
   Layout Utilities
   ---------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
}

.btn:focus-visible {
  outline: 2px solid var(--color-text);
  outline-offset: 2px;
}

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

.btn--primary:hover,
.btn--primary:focus {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-text);
}

.btn--full {
  width: 100%;
}

/* ----------------------------------------
   Header & Navigation
   ---------------------------------------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  padding: var(--space-md) var(--container-padding);
  background: rgba(4, 31, 55, 0.85);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.brand__mark {
  width: 42px;
  height: auto;
  filter: drop-shadow(0 0 6px rgba(0, 0, 0, 0.4));
}

.brand__text {
  display: flex;
  flex-direction: column;
  gap: 2px;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text);
}

.brand__name {
  font-weight: 600;
}

.brand__tagline {
  color: var(--color-text-muted);
  font-weight: 500;
}

.nav {
  display: flex;
  gap: var(--space-md);
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.nav a {
  padding: var(--space-xs) var(--space-sm);
  color: var(--color-text-muted);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.nav a:hover,
.nav a:focus,
.nav a.is-active {
  color: var(--color-text);
  border-color: rgba(239, 103, 24, 0.6);
}

.cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  border-radius: 999px;
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  transition: all var(--transition-fast);
  gap: var(--space-xs);
}

.cta:hover,
.cta:focus {
  background: var(--color-primary);
  color: var(--color-background);
  box-shadow: 0 10px 30px rgba(239, 103, 24, 0.35);
}

.cta--solid {
  background: var(--color-primary);
  color: var(--color-background);
  border-color: var(--color-primary);
}

@media (max-width: 960px) {
  .topbar {
    position: static;
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}

@media (max-width: 620px) {
  .cta {
    width: 100%;
    justify-content: center;
  }
}

/* ----------------------------------------
   Hero Section
   ---------------------------------------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: var(--color-background);
  overflow: hidden;
  position: relative;
}

/* Hero Background Image */
.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
}

.hero__bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.15;
  filter: grayscale(40%);
}

.hero__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
  padding: var(--space-4xl) 0;
  position: relative;
  z-index: 1;
}

.hero__text {
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.2s;
}

.hero__title {
  margin-bottom: var(--space-lg);
  line-height: 1.1;
}

.hero__subtitle {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2xl);
  max-width: 500px;
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
  flex-wrap: wrap;
}

.hero__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  position: relative;
}

.hero__link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-primary);
  transition: width var(--transition-base);
}

.hero__link:hover::after,
.hero__link:focus::after {
  width: 100%;
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease forwards;
  animation-delay: 0.4s;
}

.hero__logo {
  max-width: 350px;
  width: 100%;
  height: auto;
  filter: drop-shadow(0 0 40px rgba(239, 103, 24, 0.15));
}

@media (max-width: 900px) {
  .hero__content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: var(--space-3xl);
  }

  .hero__subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero__actions {
    justify-content: center;
  }

  .hero__visual {
    order: -1;
  }

  .hero__logo {
    max-width: 200px;
  }
}

/* ----------------------------------------
   Section Common Styles
   ---------------------------------------- */
section {
  padding: var(--space-5xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-title {
  margin-bottom: var(--space-md);
}

.section-divider {
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
  margin: 0 auto;
}

.eyebrow {
  display: inline-block;
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-sm);
}

.section__lede {
  color: var(--color-text-muted);
  margin-top: var(--space-sm);
}

/* Scroll Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ----------------------------------------
   About Section
   ---------------------------------------- */
.about {
  background-color: var(--color-background-light);
}

.about__content {
  max-width: 800px;
  margin: 0 auto var(--space-3xl);
  text-align: center;
}

/* About Section Image */
.about__image-wrapper {
  max-width: 900px;
  margin: 0 auto var(--space-3xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--color-border);
}

.about__image {
  width: 100%;
  height: auto;
  display: block;
  filter: grayscale(20%);
  transition: filter var(--transition-slow);
}

.about__image-wrapper:hover .about__image {
  filter: grayscale(0%);
}

.about__text {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.8;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.pillar {
  text-align: center;
  padding: var(--space-xl);
}

.pillar__title {
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.pillar__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .pillars {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 500px) {
  .pillars {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------
   Services Section
   ---------------------------------------- */
.services {
  background-color: var(--color-background);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.service-card {
  padding: var(--space-2xl);
  background-color: var(--color-background-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.service-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-4px);
}

.service-card__title {
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

.service-card__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
  line-height: 1.7;
}

@media (max-width: 900px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

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

/* ----------------------------------------
   Approach Section
   ---------------------------------------- */
.approach {
  background-color: var(--color-background-light);
}

.approach__timeline {
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
}

.approach__step {
  display: flex;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
  border-left: 2px solid var(--color-border);
  padding-left: var(--space-2xl);
  margin-left: var(--space-lg);
  position: relative;
}

.approach__step:last-child {
  border-left-color: transparent;
}

.approach__number {
  position: absolute;
  left: calc(-1 * var(--space-lg) - 16px);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-text);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-sm);
  border-radius: 50%;
}

.approach__title {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.approach__text {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

.approach__quote {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: var(--space-2xl);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.approach__quote p {
  font-family: var(--font-heading);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--color-text-muted);
  margin: 0;
}

@media (max-width: 500px) {
  .approach__step {
    margin-left: var(--space-md);
    padding-left: var(--space-xl);
  }

  .approach__number {
    left: calc(-1 * var(--space-md) - 16px);
  }
}

/* ----------------------------------------
   Clients Section
   ---------------------------------------- */
.clients {
  background-color: var(--color-background);
}

.clients__intro {
  text-align: center;
  max-width: 700px;
  margin: 0 auto var(--space-3xl);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
}

.clients__sectors {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xl);
}

.sector {
  flex: 1 1 240px;
  max-width: 260px;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.sector__title {
  font-size: var(--text-lg);
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.sector__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: 0;
}

@media (max-width: 900px) {
  .sector {
    flex: 1 1 320px;
    max-width: 360px;
  }
}

@media (max-width: 500px) {
  .sector {
    flex: 1 1 100%;
    max-width: 100%;
  }
}

/* ----------------------------------------
   Contact Section
   ---------------------------------------- */
.contact {
  display: grid;
  gap: var(--space-lg);
  max-width: var(--container-max);
  margin: 0 auto;
  padding: var(--space-2xl) var(--container-padding);
  background: linear-gradient(
    120deg,
    rgba(239, 103, 24, 0.12),
    rgba(4, 31, 55, 0.9)
  );
  border: 1px solid rgba(239, 103, 24, 0.35);
  border-radius: 20px;
  box-shadow: var(--shadow-lg);
}

.contact__content h2 {
  margin-bottom: var(--space-sm);
}

.contact__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-md);
  margin: var(--space-lg) 0 var(--space-md);
}

.contact__card {
  padding: var(--space-md);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(255, 255, 255, 0.04);
}

.contact__label {
  font-size: var(--text-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
}

.contact__link {
  color: var(--color-text);
  font-weight: 600;
}

.contact__note {
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

.contact__note p {
  margin: 0;
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
.footer {
  max-width: var(--container-max);
  margin: var(--space-3xl) auto var(--space-4xl);
  padding: var(--space-xl) var(--container-padding) 0;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  gap: var(--space-lg);
  color: var(--color-text-muted);
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.footer__meta {
  max-width: 520px;
}

.footer__meta p {
  margin-bottom: var(--space-sm);
}

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

.muted {
  color: var(--color-text-subtle);
  font-size: var(--text-xs);
}

@media (max-width: 960px) {
  .footer {
    flex-direction: column;
  }
}

/* ----------------------------------------
   Keyframe Animations
   ---------------------------------------- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ----------------------------------------
   Reduced Motion Preference
   ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}