/* ==========================================================================
   Quailworks - CSS Foundation
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Theming)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - derived from navy quail logo */
  --color-primary: #0d1b2a;
  --color-primary-light: #1b263b;
  --color-secondary: #415a77;
  --color-accent: #778da9;
  --color-white: #ffffff;
  --color-off-white: #f8f9fa;
  --color-text: #1a1a2e;
  --color-text-muted: #6c757d;

  /* Typography */
  --font-family-base: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-family-heading: var(--font-family-base);

  /* Font sizes - responsive scale */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;
  --font-size-5xl: 3rem;

  /* 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;

  /* Layout */
  --container-max-width: 1200px;
  --container-padding: var(--space-lg);
  --header-height: 80px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 300ms ease;
}

/* --------------------------------------------------------------------------
   CSS Reset / Normalize
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

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

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

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

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

ul,
ol {
  list-style: none;
}

/* --------------------------------------------------------------------------
   Base Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

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

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

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

/* Sections */
.section {
  padding-top: var(--space-4xl);
  padding-bottom: var(--space-4xl);
}

.section--hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding-top: var(--header-height);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-xl);
}

.hero__logo-wrapper {
  margin-bottom: var(--space-2xl);
}

.hero__logo {
  width: 200px;
  height: auto;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
}

.hero__tagline {
  font-size: var(--font-size-xl);
  font-weight: 300;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-2xl);
}

.hero__cta {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
  transition: all var(--transition-base);
}

.hero__cta:hover {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* Hero Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__logo-wrapper {
  animation: fadeInUp 0.8s ease-out forwards;
}

.hero__title {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.hero__tagline {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.hero__cta {
  opacity: 0;
  animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  .hero__logo-wrapper,
  .hero__title,
  .hero__tagline,
  .hero__cta {
    animation: none;
    opacity: 1;
  }
}

/* --------------------------------------------------------------------------
   Scroll-Triggered Animations
   -------------------------------------------------------------------------- */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.animate-on-scroll--visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .animate-on-scroll {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

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

.services__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

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

.services__intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-2xl);
}

.service-card {
  padding: var(--space-xl);
  background-color: var(--color-white);
  border-top: 3px solid var(--color-primary);
}

.service-card__title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.service-card__description {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.section--contact {
  background-color: var(--color-white);
}

.contact__header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--space-3xl);
}

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

.contact__intro {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
}

.contact__form {
  max-width: 500px;
  margin: 0 auto;
}

.form__group {
  margin-bottom: var(--space-lg);
}

.form__label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
}

.form__input {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--font-size-base);
  color: var(--color-text);
  background-color: var(--color-white);
  border: 1px solid var(--color-accent);
  transition: border-color var(--transition-fast);
}

.form__input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form__input::placeholder {
  color: var(--color-text-muted);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__submit {
  display: block;
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-white);
  background-color: var(--color-primary);
  border: 1px solid var(--color-primary);
  cursor: pointer;
  transition: all var(--transition-base);
}

.form__submit:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary-light);
}

.form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  z-index: 100;
  border-bottom: 1px solid var(--color-off-white);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo-img {
  height: 50px;
  width: auto;
}

.nav__links {
  display: flex;
  gap: var(--space-xl);
}

.nav__link {
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text);
  transition: color var(--transition-fast);
}

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

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  padding: var(--space-xl) 0;
  background-color: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  font-size: var(--font-size-sm);
}

/* --------------------------------------------------------------------------
   Responsive Breakpoints
   -------------------------------------------------------------------------- */

/* Tablet and up (768px) */
@media (min-width: 768px) {
  :root {
    --font-size-4xl: 3rem;
    --font-size-5xl: 4rem;
  }

  .section {
    padding-top: var(--space-4xl);
    padding-bottom: var(--space-4xl);
  }

  .hero__logo {
    width: 250px;
  }

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

/* Desktop (1024px) */
@media (min-width: 1024px) {
  :root {
    --font-size-4xl: 3.5rem;
    --font-size-5xl: 5rem;
  }

  .hero__logo {
    width: 300px;
  }

  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile adjustments */
@media (max-width: 767px) {
  :root {
    --container-padding: var(--space-md);
  }

  .nav__links {
    gap: var(--space-lg);
  }

  .nav__link {
    font-size: var(--font-size-xs);
  }

  .nav__logo-img {
    height: 40px;
  }

  .hero__logo {
    width: 150px;
  }

  .hero__title {
    font-size: var(--font-size-3xl);
  }

  .hero__tagline {
    font-size: var(--font-size-base);
    letter-spacing: 0.05em;
  }

  .hero__cta {
    padding: var(--space-sm) var(--space-lg);
  }

  .form__input {
    padding: var(--space-md) var(--space-md);
    font-size: var(--font-size-base);
  }

  .form__submit {
    padding: var(--space-md) var(--space-lg);
  }
}

/* Extra small screens (320px) */
@media (max-width: 359px) {
  .nav__links {
    gap: var(--space-md);
  }

  .hero__logo {
    width: 120px;
  }

  .hero__title {
    font-size: var(--font-size-2xl);
  }
}