/* ============================================================
   APTIKDEV — Main Stylesheet
   Defines global resets, typography,
   layout utilities, header, hero, footer, and components.
   Core visual values use CSS custom properties from tokens.css.
   ============================================================ */

/* ---- Reset & Base ----------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-body);
  background-color: var(--color-bg-page);
  overflow-x: hidden;
}

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

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

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

a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

ul {
  list-style: none;
}

/* ---- Container -------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* ---- Buttons ---------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  min-width: 48px;
  padding: var(--space-1) var(--space-4);
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: 600;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-wide);
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition:
    background-color var(--transition-base),
    color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-medium);
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
}

.btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* Primary button — teal, white text (contrast 5.3:1) */
.btn-primary {
  background-color: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border-color: var(--btn-primary-bg);
}

.btn-primary:hover {
  background-color: var(--btn-primary-bg-hover);
  border-color: var(--btn-primary-bg-hover);
  color: var(--btn-primary-text);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Hero button — white bg, navy text (contrast 12.4:1) */
.btn-hero {
  background-color: var(--btn-hero-bg);
  color: var(--btn-hero-text);
  border-color: var(--btn-hero-bg);
  padding: var(--space-2) var(--space-6);
  font-size: var(--text-xl);
  letter-spacing: var(--tracking-wide);
}

.btn-hero:hover {
  background-color: var(--btn-hero-bg-hover);
  border-color: var(--btn-hero-bg-hover);
  color: var(--btn-hero-text);
  box-shadow: var(--shadow-btn-hero-hover);
  transform: translateY(-2px);
}

.btn-hero:active {
  transform: translateY(0);
}

/* ---- Site Header ------------------------------------------ */

.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background-color: var(--color-primary-alpha-97);
  backdrop-filter: blur(var(--blur-md));
  -webkit-backdrop-filter: blur(var(--blur-md));
  border-bottom: var(--border-width-1) solid var(--color-white-alpha-08);
}

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Logo */
.nav-logo {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-wider);
  min-width: var(--tap-target-min);
  min-height: var(--tap-target-min);
  color: var(--color-white);
  text-decoration: none;
  text-transform: uppercase;
  transition: color var(--transition-base);
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}

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

.nav-logo::after {
  content: '';
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-medium);
  transform-origin: left center;
  margin-top: 2px;
}

.nav-logo:hover::after {
  transform: scaleX(1);
}

/* Nav links */
.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  letter-spacing: var(--tracking-wide);
  color: var(--color-white-alpha-80);
  text-decoration: none;
  text-transform: uppercase;
  padding-block: var(--space-1);
  position: relative;
  transition: color var(--transition-base);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transition: transform var(--transition-medium);
  transform-origin: center;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--color-white);
}

.nav-link[aria-current="page"]::after,
.nav-link:hover::after {
  transform: scaleX(1);
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 44px;
  height: 44px;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-base);
}

.nav-toggle:hover {
  background-color: var(--color-white-alpha-08);
}

.nav-toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-white);
  border-radius: var(--radius-full);
  transition: transform var(--transition-medium), opacity var(--transition-base);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---- Hero Section ----------------------------------------- */

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  background-color: var(--color-bg-hero);
  overflow: hidden;
  padding-top: var(--header-height);
}

/* Dot-grid blueprint texture */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, var(--color-white-alpha-12) var(--effect-size-1), transparent var(--effect-size-1));
  background-size: 28px 28px;
  pointer-events: none;
  z-index: 0;
}

/* Diagonal gradient vignette */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg,
      var(--color-accent-dark-alpha-15) 0%,
      transparent 50%,
      var(--color-primary-alpha-40) 100%);
  pointer-events: none;
  z-index: 0;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
  padding-block: var(--space-12) var(--space-16);
}

.hero-content {
  max-width: 760px;
  animation: hero-reveal 0.8s ease both;
}

@keyframes hero-reveal {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Hero eyebrow line */
.hero-content::before {
  content: '';
  display: block;
  width: 64px;
  height: 3px;
  background-color: var(--color-accent);
  margin-bottom: var(--space-4);
  animation: expand-line 0.6s ease both 0.2s;
}

@keyframes expand-line {
  from { width: 0; opacity: 0; }
  to   { width: 64px; opacity: 1; }
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
  font-weight: 700;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-white);
  margin-bottom: var(--space-4);
  animation: hero-reveal 0.8s ease both 0.1s;
  /* Subtle text shadow for depth */
  text-shadow: var(--shadow-text-hero);
}

.hero-tagline {
  font-family: var(--font-body);
  font-size: clamp(var(--text-lg), 2.5vw, var(--text-2xl));
  font-weight: 400;
  line-height: var(--leading-snug);
  color: var(--color-white-alpha-88);
  margin-bottom: var(--space-8);
  max-width: 600px;
  animation: hero-reveal 0.8s ease both 0.2s;
}

.hero .btn-hero {
  animation: hero-reveal 0.8s ease both 0.35s;
}

/* ---- Home: Services Overview (US-1.2) ---------------------- */

.services-overview {
  padding-block: var(--space-10);
  background-color: var(--color-bg-section-alt);
}

.services-overview-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  line-height: var(--leading-tight);
  color: var(--color-primary);
  margin-bottom: var(--space-5);
}

.services-overview-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}

.service-card {
  background-color: var(--color-white);
  border: var(--border-width-1) solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.service-card-title {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  line-height: var(--leading-snug);
  color: var(--color-text-body);
  overflow-wrap: anywhere;
}

/* ---- Home: Company Presentation (US-1.3) -------------------- */

.company-presentation {
  padding-block: var(--space-10);
  background-color: var(--color-bg-page);
}

.company-presentation-inner {
  display: grid;
  gap: var(--space-3);
}

.company-presentation-title {
  font-family: var(--font-display);
  font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
  line-height: var(--leading-tight);
  color: var(--color-primary);
}

.company-presentation-text {
  max-width: var(--measure-readable);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-body);
}

/* ---- Service Detail Subpages --------------------------------- */

.subpage-main {
  padding-top: calc(var(--header-height) + var(--space-2));
}

.breadcrumb {
  padding-block: var(--space-2);
}

.breadcrumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.breadcrumb-list a {
  display: inline-flex;
  align-items: center;
  min-width: var(--tap-target-min);
  min-height: var(--tap-target-min);
  padding-inline: var(--space-1);
  color: var(--color-link);
}

.breadcrumb-list a:hover {
  color: var(--color-link-hover);
}

.service-detail {
  padding-block: var(--space-4) var(--space-10);
  display: grid;
  gap: var(--space-3);
}

.service-title {
  max-width: var(--measure-readable);
  font-family: var(--font-display);
  font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
  line-height: var(--leading-tight);
  color: var(--color-primary);
}

.service-description {
  max-width: var(--measure-readable);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-body);
}

.service-cta {
  justify-self: start;
}

/* ---- Contact Page (US-3.1) ---------------------------------- */

.contact-page {
  padding-block: var(--space-4) var(--space-10);
}

.contact-intro {
  max-width: var(--measure-readable);
  margin-top: var(--space-2);
  margin-bottom: var(--space-4);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--color-text-body);
}

.contact-form {
  display: grid;
  gap: var(--space-3);
  max-width: var(--max-width-form);
  padding: var(--space-4);
  border: var(--border-width-1) solid var(--color-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.form-field {
  display: grid;
  gap: var(--space-1);
}

.form-field label {
  font-size: var(--text-base);
  font-weight: 600;
  line-height: var(--leading-snug);
  color: var(--color-text-body);
}

.form-field input,
.form-field textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-1) var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-body);
  background-color: var(--color-white);
  border: var(--border-width-1) solid var(--color-gray-400);
  border-radius: var(--radius-md);
}

.form-field textarea {
  resize: vertical;
  min-height: 132px;
}

.form-consent-field {
  gap: var(--space-2);
}

.consent-control {
  display: grid;
  grid-template-columns: auto 1fr;
  align-items: center;
  gap: var(--space-2);
}

.consent-control input[type="checkbox"] {
  width: 44px;
  height: 44px;
  margin: 0;
  cursor: pointer;
}

.consent-control label {
  cursor: pointer;
}

.consent-policy {
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text-body);
}

.consent-policy a {
  text-decoration: underline;
}

.form-field input:focus-visible,
.form-field textarea:focus-visible {
  outline: none;
  border-color: var(--color-accent-dark);
  box-shadow: var(--focus-ring);
}

.form-field.has-error input,
.form-field.has-error textarea {
  border-color: var(--color-accent-darker);
}

.form-field.has-error input[type="checkbox"],
.consent-control.has-error input[type="checkbox"] {
  outline: 2px solid var(--color-accent-darker);
  outline-offset: 1px;
}

.form-error {
  margin: 0;
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  font-weight: 600;
  color: var(--color-accent-darker);
  overflow-wrap: break-word;
}

.contact-form .btn-primary {
  justify-self: start;
}

/* ---- Contact Success Message (US-3.4) --------------------- */

.contact-success {
  max-width: var(--max-width-form);
  margin-top: var(--space-4);
  padding: var(--space-3) var(--space-4);
  border: var(--border-width-1) solid var(--color-success-border);
  border-radius: var(--radius-lg);
  background-color: var(--color-success-bg);
  font-size: var(--text-base);
  font-weight: 600;
  line-height: var(--leading-normal);
  color: var(--color-success-text);
}

/* ---- Site Footer ------------------------------------------ */

.site-footer {
  background-color: var(--color-gray-900);
  color: var(--color-gray-400);
  padding-block: var(--space-6);
  border-top: var(--border-width-1) solid var(--color-white-alpha-06);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.footer-copy {
  font-size: var(--text-sm);
  color: var(--color-gray-500);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  align-items: center;
}

.footer-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: var(--tap-target-min);
  min-height: var(--tap-target-min);
  padding-inline: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-gray-400);
  text-decoration: none;
  transition: color var(--transition-base);
}

.footer-nav a:hover {
  color: var(--color-white);
}

.footer-nav a:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ---- Skip link (accessibility) ---------------------------- */

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-2);
  z-index: 200;
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background-color: var(--color-accent-dark);
  color: var(--color-white);
  font-size: var(--text-sm);
  font-weight: 600;
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: var(--space-2);
}

/* ---- Responsive: Tablet (768px) --------------------------- */

@media (max-width: 1024px) {
  :root {
    --container-pad: var(--space-3);
  }

  .hero-inner {
    padding-block: var(--space-8) var(--space-12);
  }

  .services-overview {
    padding-block: var(--space-8);
  }
}

@media (max-width: 767px) {
  :root {
    --container-pad: var(--space-2);
    --header-height: 64px;
  }

  /* Mobile nav */
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    background-color: var(--color-primary-alpha-98);
    backdrop-filter: blur(var(--blur-lg));
    -webkit-backdrop-filter: blur(var(--blur-lg));
    z-index: 99;
    animation: none;
  }

  .nav-menu.is-open {
    display: flex;
  }

  .nav-link {
    font-size: var(--text-xl);
    letter-spacing: var(--tracking-wider);
  }

  .hero-inner {
    padding-block: var(--space-6) var(--space-8);
  }

  .hero-title {
    font-size: clamp(var(--text-3xl), 12vw, var(--text-4xl));
  }

  .hero-tagline {
    font-size: clamp(var(--text-base), 4vw, var(--text-xl));
    margin-bottom: var(--space-6);
  }

  .btn-hero {
    width: 100%;
    max-width: 320px;
    font-size: var(--text-lg);
    padding: var(--space-2) var(--space-4);
  }

  .services-overview-title {
    margin-bottom: var(--space-4);
  }

  .service-detail {
    padding-bottom: var(--space-8);
  }

  .contact-form {
    padding: var(--space-3);
  }

  .contact-form .btn-primary {
    width: 100%;
    justify-self: stretch;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }

  .footer-nav {
    justify-content: center;
    gap: var(--space-3);
  }
}

@media (min-width: 768px) {
  .services-overview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1200px) {
  .services-overview-grid {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* Extra small (360px) — ensure no overflow */
@media (max-width: 400px) {
  :root {
    --container-pad: var(--space-2);
  }

  .hero-title {
    font-size: clamp(var(--text-2xl), 13vw, var(--text-3xl));
  }

  .hero-tagline {
    font-size: var(--text-base);
  }

  .btn-hero {
    max-width: 100%;
    min-height: 52px;
  }

  .footer-nav {
    flex-direction: column;
    gap: var(--space-2);
  }
}