/* style.css — Vertum Component Styles */

/* ============================================
   LAYOUT UTILITIES
   ============================================ */
.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.container--narrow {
  max-width: var(--content-narrow);
}

.container--default {
  max-width: var(--content-default);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: var(--space-4) 0;
  background: oklch(from var(--color-bg) l c h / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition-interactive);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

.nav__logo {
  height: 36px;
  width: auto;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
}

.nav__link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

.nav__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.nav__mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

@media (max-width: 768px) {
  .nav__links {
    display: none;
  }
  .nav__mobile-toggle {
    display: flex;
  }
  .nav__cta-desktop {
    display: none;
  }
}

/* Mobile menu overlay */
.mobile-menu {
  position: fixed;
  inset: 0;
  z-index: 99;
  background: var(--color-bg);
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: var(--space-8);
  opacity: 0;
  pointer-events: none;
  transition: opacity 300ms cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu.is-open {
  opacity: 1;
  pointer-events: auto;
}

.mobile-menu__link {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 600;
  color: var(--color-text);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.mobile-menu__link:hover {
  color: var(--color-primary);
}

.mobile-menu__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-weight: 600;
  font-size: var(--text-sm);
  line-height: 1;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition-interactive),
              color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              transform var(--transition-interactive);
  min-height: 44px;
}

.btn:hover {
  transform: translateY(-1px);
}

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

/* Primary CTA — Amber */
.btn--primary {
  background: var(--color-accent);
  color: #FFFFFF;
  box-shadow: var(--shadow-sm);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  box-shadow: var(--shadow-md);
}

.btn--primary:active {
  background: var(--color-accent-active);
  box-shadow: var(--shadow-sm);
}

/* Secondary — outlined */
.btn--secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-text-faint);
}

/* Ghost */
.btn--ghost {
  background: transparent;
  color: var(--color-text-muted);
  padding: var(--space-2) var(--space-4);
}

.btn--ghost:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* Large variant */
.btn--lg {
  font-size: var(--text-base);
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
}

/* ============================================
   THEME TOGGLE
   ============================================ */
.theme-toggle {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive),
              background var(--transition-interactive);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
  position: relative;
  padding-top: calc(var(--space-32) + var(--space-8));
  padding-bottom: clamp(var(--space-16), 10vw, var(--space-24));
  overflow: hidden;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-6);
}

.hero__subhead {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-8);
  max-width: 560px;
}

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

.hero__secondary-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-interactive);
}

.hero__secondary-link:hover {
  color: var(--color-primary-hover);
}

/* Decorative shape for hero */
.hero__decoration {
  position: absolute;
  top: 5%;
  right: -10%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, oklch(from var(--color-primary) l c h / 0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

.hero__decoration-2 {
  position: absolute;
  bottom: -30%;
  left: -15%;
  width: 500px;
  height: 500px;
  border-radius: 50%;
  background: radial-gradient(circle, oklch(from var(--color-accent) l c h / 0.06) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
}

/* ============================================
   SECTION UTILITIES
   ============================================ */
.section {
  padding: clamp(var(--space-12), 8vw, var(--space-24)) 0;
}

.section--teal {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

.section--teal .section__headline {
  color: var(--color-text-inverse);
}

.section--teal .section__subtext {
  color: oklch(from var(--color-text-inverse) l c h / 0.75);
}

.section--dark {
  background: var(--color-surface-2);
}

.section__headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-4);
}

.section__subtext {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 600px;
  margin-bottom: var(--space-12);
}

/* ============================================
   CARDS
   ============================================ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr));
  gap: var(--space-6);
}

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

@media (max-width: 768px) {
  .card-grid--3 {
    grid-template-columns: 1fr;
  }
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: box-shadow var(--transition-interactive),
              border-color var(--transition-interactive);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.card__text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ============================================
   PROCESS STEPS
   ============================================ */
.process {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  counter-reset: step;
}

@media (max-width: 768px) {
  .process {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }
}

.process__step {
  counter-increment: step;
  position: relative;
}

.process__number {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.process__number::before {
  content: counter(step, decimal-leading-zero);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-primary);
  opacity: 0.3;
  line-height: 1;
}

.process__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.process__text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* Connector line between steps (desktop only) */
@media (min-width: 769px) {
  .process__step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: var(--space-6);
    right: calc(-1 * var(--space-4));
    width: var(--space-8);
    height: 1px;
    background: var(--color-border);
  }
}

/* ============================================
   INDUSTRIES
   ============================================ */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr));
  gap: var(--space-4);
}

@media (min-width: 769px) {
  .industries-grid {
    grid-template-columns: repeat(5, 1fr);
  }
}

@media (max-width: 640px) {
  .industries-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.industry-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  text-align: center;
  transition: box-shadow var(--transition-interactive),
              border-color var(--transition-interactive);
}

.industry-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.industry-card__icon {
  width: 48px;
  height: 48px;
  margin: 0 auto var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: var(--color-primary-highlight);
  color: var(--color-primary);
}

.industry-card__name {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-2);
}

.industry-card__desc {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================
   STATS
   ============================================ */
.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  text-align: center;
  padding: var(--space-12) 0;
}

@media (max-width: 640px) {
  .stats {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: var(--space-2);
}

.stat__label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* On teal background */
.section--teal .stat__number {
  color: #F59E0B;
}

.section--teal .stat__label {
  color: oklch(from #F8FAFC l c h / 0.75);
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
  text-align: center;
  padding: clamp(var(--space-16), 10vw, var(--space-32)) 0;
}

.cta-section__headline {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-4);
}

.cta-section__text {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin: 0 auto var(--space-8);
}

.cta-section__email {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}

.cta-section__email a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.cta-section__email a:hover {
  color: var(--color-primary-hover);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: var(--space-12) 0 var(--space-8);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-8);
  flex-wrap: wrap;
}

.footer__logo {
  height: 32px;
  width: auto;
  margin-bottom: var(--space-4);
}

.footer__brand-text {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  max-width: 280px;
}

.footer__links {
  display: flex;
  gap: var(--space-8);
}

.footer__link-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer__link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

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

.footer__bottom {
  margin-top: var(--space-8);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.footer__socials {
  display: flex;
  gap: var(--space-4);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  transition: color var(--transition-interactive),
              background var(--transition-interactive);
}

.footer__social-link:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .fade-in {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 35%;
  }
}

@keyframes reveal-fade {
  to { opacity: 1; }
}

/* JS fallback for browsers without scroll-driven animations */
@supports not (animation-timeline: scroll()) {
  .js-fade-in {
    opacity: 0;
    transition: opacity 600ms cubic-bezier(0.16, 1, 0.3, 1);
  }
  .js-fade-in.is-visible {
    opacity: 1;
  }
}

/* ============================================
   STAGGER CHILDREN
   ============================================ */
.stagger-children > * {
  opacity: 1;
}

@supports (animation-timeline: scroll()) {
  .stagger-children > * {
    opacity: 0;
    animation: reveal-fade linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 40%;
  }
  .stagger-children > :nth-child(1) { animation-delay: 0ms; }
  .stagger-children > :nth-child(2) { animation-delay: 60ms; }
  .stagger-children > :nth-child(3) { animation-delay: 120ms; }
  .stagger-children > :nth-child(4) { animation-delay: 180ms; }
  .stagger-children > :nth-child(5) { animation-delay: 240ms; }
}

/* ============================================
   DIVIDER
   ============================================ */
.divider {
  border: none;
  height: 1px;
  background: var(--color-divider);
  margin: 0;
}

/* ============================================
   OFF-SCREEN PERFORMANCE
   ============================================ */
.section:not(.hero) {
  content-visibility: auto;
}

/* ============================================
   MOBILE FOOTER
   ============================================ */
@media (max-width: 640px) {
  .footer__inner {
    flex-direction: column;
    gap: var(--space-6);
  }
  .footer__bottom {
    flex-direction: column;
    align-items: flex-start;
  }
  .cta-section__text {
    padding-inline: var(--space-4);
  }
}