/* ============================================
   Tekmob - Design System
   ============================================ */

:root {
  /* Colors */
  --color-bg: #000000;
  --color-secondary: #6F6F6F;
  --color-text: #FFFFFF;
  --color-accent: #0C8DE8;

  /* Typography */
  --font-body: "Schibsted Grotesk", system-ui, sans-serif;
  --font-logo: "Rock Salt", cursive;

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

  /* Layout */
  --max-width: 1200px;
  --nav-height: 4rem;
  --footer-height: 3.25rem;

  /* Landing ribbon palette (warm → cool) */
  --ribbon-warm: #ff5f8f;
  --ribbon-mid: #c084fc;
  --ribbon-cool: #22d3ee;
  --ribbon-glow-warm: rgba(255, 95, 143, 0.28);
  --ribbon-glow-mid: rgba(168, 85, 247, 0.2);
  --ribbon-glow-cool: rgba(34, 211, 238, 0.22);
}

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

html {
  scroll-behavior: smooth;
  min-height: 100%;
  min-height: 100dvh;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100%;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  flex-shrink: 0;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-secondary);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-xl);
  min-height: var(--nav-height);
}

.logo {
  font-family: var(--font-logo);
  font-size: 1.35rem;
  color: var(--color-text);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  line-height: 1.2;
  gap: 0.35rem;
  letter-spacing: 0.02em;
}

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

.logo-text {
  font-size: 1em;
}

.nav-tabs {
  display: flex;
  flex-direction: row;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: var(--space-lg);
  flex-shrink: 0;
}

.tab-btn {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm) var(--space-md);
  letter-spacing: 0.02em;
  transition: color 0.2s ease;
  white-space: nowrap;
}

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

.tab-btn.active {
  color: var(--color-accent);
}

/* Main Content */
.main-content {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl);
  width: 100%;
}

.main-content:has(#home.active) {
  padding-top: 0;
  padding-left: 0;
  padding-right: 0;
  max-width: none;
  width: 100%;
}

.main-content:has(#about.active),
.main-content:has(#contact.active) {
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding-bottom: 0;
}

body.body--home-active {
  overflow: hidden;
  padding-bottom: 0;
}

body.body--home-active .site-footer {
  display: none;
}

.site-footer {
  position: relative;
  z-index: 10;
  flex-shrink: 0;
  width: 100%;
  margin-top: auto;
  padding: var(--space-lg) var(--space-xl);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-secondary);
  background: transparent;
}

/* Tab Panels */
.tab-panel {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-panel.active {
  display: block;
}

.tab-panel.tab-panel--home.active {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Typography */
.section-heading {
  font-family: var(--font-body);
  font-size: 1.5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin: 0 0 var(--space-xl);
  color: var(--color-text);
}

.sub-heading {
  font-family: var(--font-body);
  font-size: 1.125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: var(--space-xl) 0 var(--space-md);
  color: var(--color-text);
}

.sub-heading:first-of-type {
  margin-top: 0;
}

.body-copy {
  margin: 0 0 var(--space-md);
  color: var(--color-text);
  max-width: 65ch;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.65;
}

/* Home — two-pane viewport (hero + What I Offer) */
.home-viewport {
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  width: 100vw;
  --home-viewport-h: calc(100dvh - var(--nav-height));
  height: var(--home-viewport-h);
  max-height: var(--home-viewport-h);
  min-height: var(--home-viewport-h);
  overflow: hidden;
  overscroll-behavior: none;
  /* Definite main size: avoid flex:1 (basis 0%) collapsing with content-sized ancestors */
  flex: 0 0 var(--home-viewport-h);
}

.home-track {
  display: flex;
  flex-direction: column;
  height: calc(var(--home-viewport-h) * 2);
  min-height: calc(var(--home-viewport-h) * 2);
  transform: translate3d(0, 0, 0);
  transition: transform 0.85s cubic-bezier(0.22, 1, 0.36, 1);
  will-change: transform;
}

.home-track.home-track--services {
  transform: translate3d(0, -50%, 0);
}

.home-pane {
  position: relative;
  flex: 0 0 50%;
  min-height: var(--home-viewport-h);
  overflow: hidden;
}

.home-pane--hero {
  display: flex;
  align-items: center;
  justify-content: center;
  padding-top: clamp(0.5rem, 5vh, 2rem);
  background-color: var(--color-bg);
}

/* Soft ribbon glow behind hero + services (matches wave reference) */
.landing-ambient {
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
}

.landing-ambient--hero {
  top: 0;
  bottom: 0;
  filter: blur(42px);
  transform: translateZ(0);
  opacity: 0.55;
  background:
    radial-gradient(ellipse 130% 60% at 8% 92%, rgba(249, 115, 22, 0.55), transparent 50%),
    radial-gradient(ellipse 110% 55% at 48% 88%, rgba(192, 38, 211, 0.48), transparent 52%),
    radial-gradient(ellipse 125% 58% at 88% 90%, rgba(59, 130, 246, 0.52), transparent 50%),
    radial-gradient(ellipse 90% 45% at 62% 95%, rgba(236, 72, 153, 0.28), transparent 55%);
}

/* Blue-dominant living glow for About / Contact (home hero palette) */
.landing-ambient--page {
  filter: blur(48px);
  transform: translateZ(0);
  opacity: 0.65;
  background:
    linear-gradient(
      to bottom,
      transparent 0%,
      rgba(59, 130, 246, 0.06) 28%,
      rgba(59, 130, 246, 0.18) 58%,
      rgba(59, 130, 246, 0.32) 82%,
      rgba(37, 99, 235, 0.48) 100%
    );
}

.landing-ambient--page::before,
.landing-ambient--page::after {
  content: '';
  position: absolute;
  top: -5%;
  left: -40%;
  right: -40%;
  bottom: -35%;
  border-radius: 50%;
  will-change: transform, opacity;
}

.landing-ambient--page::before {
  background:
    radial-gradient(ellipse 72% 62% at 8% 108%, rgba(249, 115, 22, 0.26), transparent 58%),
    radial-gradient(ellipse 78% 68% at 28% 106%, rgba(192, 38, 211, 0.3), transparent 55%),
    radial-gradient(ellipse 95% 78% at 50% 110%, rgba(59, 130, 246, 0.72), transparent 52%),
    radial-gradient(ellipse 78% 68% at 72% 106%, rgba(59, 130, 246, 0.68), transparent 52%),
    radial-gradient(ellipse 72% 62% at 92% 108%, rgba(34, 211, 238, 0.44), transparent 55%),
    radial-gradient(ellipse 110% 70% at 50% 115%, rgba(59, 130, 246, 0.55), transparent 58%),
    radial-gradient(ellipse 50% 40% at 62% 95%, rgba(236, 72, 153, 0.2), transparent 60%);
}

.landing-ambient--page::after {
  background:
    radial-gradient(ellipse 130% 90% at 50% 115%, rgba(59, 130, 246, 0.62), transparent 56%),
    radial-gradient(ellipse 70% 58% at 12% 110%, rgba(34, 211, 238, 0.38), transparent 55%),
    radial-gradient(ellipse 70% 58% at 88% 110%, rgba(59, 130, 246, 0.42), transparent 55%);
  mix-blend-mode: screen;
  opacity: 0.95;
}

@media (prefers-reduced-motion: no-preference) {
  .landing-ambient--page::before {
    animation: page-glow-drift-a 22s ease-in-out infinite;
  }

  .landing-ambient--page::after {
    animation: page-glow-drift-b 17s ease-in-out infinite;
  }
}

@keyframes page-glow-drift-a {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
  40% {
    transform: translate(5%, -4%) scale(1.07);
    opacity: 0.92;
  }
  70% {
    transform: translate(-4%, 3%) scale(0.96);
    opacity: 1;
  }
}

@keyframes page-glow-drift-b {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 0.85;
  }
  50% {
    transform: translate(-6%, 2%) scale(1.1);
    opacity: 1;
  }
}

.landing-ambient--services {
  background:
    radial-gradient(ellipse 100% 55% at 50% 0%, var(--ribbon-glow-mid), transparent 62%),
    radial-gradient(ellipse 80% 40% at 20% 8%, var(--ribbon-glow-warm), transparent 55%),
    radial-gradient(ellipse 80% 40% at 80% 12%, var(--ribbon-glow-cool), transparent 55%);
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, #000 35%, transparent 100%);
}

.hero-inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-xl);
  width: 100%;
  max-width: min(52rem, calc(100% - var(--space-2xl) * 2));
  margin: clamp(-2.5rem, -8vh, -0.75rem) auto 0;
  padding: var(--space-md) clamp(var(--space-xl), 6vw, var(--space-3xl)) var(--space-xl);
  transform: translateY(var(--home-pull, 0px));
  transition: transform 0.12s ease-out;
}

@media (max-width: 640px) {
  .hero-inner {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  width: 100%;
  gap: var(--space-md);
  margin-top: clamp(1.25rem, 6vh, 3rem);
}

.hero-copy.service-card {
  width: 100%;
  max-width: min(36rem, 100%);
  margin-inline: auto;
  text-align: center;
}

.hero-copy.service-card .service-title,
.hero-copy.service-card .service-desc {
  margin-inline: auto;
  text-align: center;
}

.hero-copy.service-card .service-desc {
  max-width: 56ch;
  line-height: 2;
}

.hero-copy.service-card:hover {
  transform: none;
}

.home-scroll-hint {
  position: absolute;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  margin: 0;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-secondary);
  cursor: pointer;
  transition: opacity 0.35s ease, color 0.2s ease;
  user-select: none;
}

.home-scroll-hint:hover,
.home-scroll-hint:focus-visible {
  color: var(--color-text);
  outline: none;
}

.home-viewport.home-viewport--pane-services .home-scroll-hint {
  opacity: 0;
  pointer-events: none;
}

.home-pane--services {
  background-color: var(--color-bg);
}

.home-services-scroll {
  position: relative;
  z-index: 1;
  height: 100%;
  overflow-y: auto;
  overflow-x: hidden;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.home-services-scroll .services {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-2xl) var(--space-xl) var(--space-xl);
}

.home-services-footer {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-xl) var(--space-3xl);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-secondary);
}

.home-services-scroll .section-heading {
  color: var(--color-text);
}

@media (prefers-reduced-motion: reduce) {
  .home-track {
    transition-duration: 0.01ms;
  }

}

/* Home / Services */
.tagline {
  font-family: var(--font-body);
  font-size: clamp(2.5rem, 7.5vw, 4rem);
  font-weight: 600;
  letter-spacing: -0.03em;
  line-height: 1.12;
  margin: 0;
  color: var(--color-text);
  max-width: none;
  text-align: center;
}

.tagline-continued {
  white-space: nowrap;
}

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

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.service-card {
  position: relative;
  padding: var(--space-xl);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 2px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  transition: border-color 0.25s ease, box-shadow 0.25s ease, transform 0.25s ease;
}

.service-card::before {
  content: "";
  position: absolute;
  inset: 0;
  padding: 1px;
  border-radius: 2px;
  background: linear-gradient(
    135deg,
    rgba(255, 95, 143, 0.55) 0%,
    rgba(192, 132, 252, 0.4) 45%,
    rgba(34, 211, 238, 0.45) 100%
  );
  -webkit-mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  mask:
    linear-gradient(#fff 0 0) content-box,
    linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

.service-card:hover {
  border-color: rgba(255, 255, 255, 0.22);
  box-shadow:
    0 16px 48px rgba(0, 0, 0, 0.45),
    0 0 32px var(--ribbon-glow-mid);
  transform: translateY(-2px);
}

.service-title {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.service-desc {
  margin: 0;
  color: var(--color-text);
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.65;
}

/* About / Contact — full-viewport glow panels */
.tab-panel--glow {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  background-color: var(--color-bg);
}

.tab-panel--glow.active {
  display: flex;
  flex-direction: column;
}

.tab-panel--glow .about-content,
.tab-panel--glow .contact-content {
  position: relative;
  z-index: 2;
  flex: 1;
}

.about-content {
  max-width: 720px;
}

.about-content > .section-heading {
  margin-bottom: var(--space-lg);
}

.about-intro {
  list-style: none;
  margin: 0 0 var(--space-2xl);
  padding: 0;
  max-width: 65ch;
  font-size: 0.9375rem;
  font-weight: 400;
  line-height: 1.65;
  color: var(--color-text);
}

.about-intro li + li {
  margin-top: var(--space-sm);
}

.about-section + .about-section {
  margin-top: var(--space-3xl);
}

.about-section .sub-heading {
  margin-top: 0;
}

.about-section .body-copy:last-child {
  margin-bottom: 0;
}

/* Contact */
.contact-content {
  max-width: 480px;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

.contact-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  min-height: 3rem;
  background-color: var(--color-text);
  color: var(--color-bg);
  border: 1px solid var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  width: fit-content;
}

.contact-btn:hover {
  background-color: #e8e8e8;
  border-color: #e8e8e8;
  color: var(--color-bg);
}

.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  min-height: 3rem;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 500;
  text-decoration: none;
  border: 1px solid transparent;
  transition: border-color 0.2s ease, color 0.2s ease, background-color 0.2s ease;
  width: fit-content;
}

.contact-link--ghost {
  background-color: var(--color-bg);
  border-color: var(--color-text);
}

.contact-link--ghost:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.contact-link--accent {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: #fff;
}

.contact-link--accent:hover {
  background-color: color-mix(in srgb, var(--color-accent) 82%, white);
  border-color: color-mix(in srgb, var(--color-accent) 82%, white);
  color: #fff;
}

.contact-link--accent:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--color-accent) 70%, black);
  outline-offset: 2px;
}

.link-arrow {
  font-size: 0.95em;
  line-height: 1;
  font-weight: 400;
}

/* Responsive */
@media (max-width: 768px) {
  .nav {
    padding: var(--space-md);
    gap: var(--space-sm);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .nav-tabs {
    gap: var(--space-xs);
    margin-left: auto;
  }

  .tab-btn {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.8125rem;
  }

  .logo {
    font-size: 1.1rem;
  }

  .main-content {
    padding: var(--space-xl) var(--space-md);
  }

  .main-content:has(#home.active) {
    padding-left: 0;
    padding-right: 0;
    padding-top: 0;
  }

  .site-footer {
    padding: var(--space-md) var(--space-md);
  }

}