/**
 * Uthini base styles – modern, minimal, fast
 * Structure: Reset | Skip link | Header | Nav | Main | Footer | Sections | Hero | CTAs | Forms | Utility
 */
@import url("variables.css");

/* ========== Reset and base ========== */
*, *::before, *::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: linear-gradient(180deg, var(--color-background) 0%, #f5f9fc 50%, var(--color-background) 100%);
  background-color: var(--color-background);
}

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

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

/* ========== Skip link (a11y) ========== */
.skip-link {
  position: absolute;
  top: -4em;
  left: var(--space-md);
  z-index: 1000;
  padding: var(--space-sm) var(--space-md);
  background: var(--color-primary);
  color: var(--color-surface);
  font-weight: 600;
  transition: top var(--transition-fast);
}
.skip-link:focus {
  top: var(--space-md);
}

/* ========== Header ========== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 2px solid var(--color-primary);
  box-shadow: 0 1px 0 rgba(133, 3, 176, 0.08);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-lg);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 101;
}

.site-logo {
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  transition: opacity var(--transition-fast);
}
.site-logo:hover {
  opacity: 0.9;
}
.site-logo img {
  height: 6rem;
  width: auto;
  max-height: 100%;
}
@media (min-width: 48rem) {
  .site-logo img {
    height: 7rem;
  }
}

/* ========== Navigation ========== */
.main-nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  gap: var(--space-xs);
}

.main-nav a {
  display: block;
  padding: 0.5rem 0.75rem;
  color: var(--color-text);
  font-weight: 600;
  border-radius: 0.25rem;
  transition: color var(--transition-fast), box-shadow var(--transition-fast);
}
.main-nav a:hover {
  color: var(--color-primary);
}
.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  box-shadow: 0 2px 0 0 var(--color-primary);
}
.main-nav a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Software submenu – desktop dropdown */
.nav-item--has-sub {
  position: relative;
}
.nav-sub {
  margin: 0;
  padding: 0;
  list-style: none;
}
@media (min-width: 48rem) {
  .nav-sub {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 10rem;
    padding: var(--space-xs) 0;
    background: var(--color-surface);
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 0.25rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-0.25rem);
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
  }
  .nav-item--has-sub:hover .nav-sub,
  .nav-item--has-sub:focus-within .nav-sub {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-sub a {
    display: block;
    padding: 0.5rem var(--space-lg);
    white-space: nowrap;
  }
}

.nav-backdrop {
  display: none;
}

/* Hide "Menu" text always; show hamburger only on mobile */
.nav-toggle span {
  font-size: 0;
  line-height: 0;
  overflow: hidden;
  white-space: nowrap;
  text-indent: -9999px;
}
/* Desktop: hide nav toggle completely */
@media (min-width: 48rem) {
  .nav-toggle {
    display: none !important;
  }
}
@media (max-width: 47.9375rem) {
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 2.75rem;
    min-height: 2.75rem;
    width: 2.75rem;
    height: 2.75rem;
    background: none;
    border: none;
    padding: 0;
    cursor: pointer;
    color: var(--color-text);
    border-radius: 0.25rem;
  }
  .nav-toggle:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }
  .nav-toggle span {
    position: relative;
    display: block;
    width: 1.25rem;
    height: 2px;
    background: currentColor;
    font-size: 0;
    overflow: visible;
  }
  .nav-toggle span::before,
  .nav-toggle span::after {
    content: "";
    position: absolute;
    left: 0;
    width: 1.25rem;
    height: 2px;
    background: currentColor;
    transition: transform var(--transition-normal);
  }
  .nav-toggle span::before {
    top: -0.375rem;
  }
  .nav-toggle span::after {
    top: 0.375rem;
  }
  .nav-toggle[aria-expanded="true"] span {
    background: transparent;
  }
  .nav-toggle[aria-expanded="true"] span::before {
    transform: translateY(0.375rem) rotate(45deg);
  }
  .nav-toggle[aria-expanded="true"] span::after {
    transform: translateY(-0.375rem) rotate(-45deg);
  }
  body.nav-open {
    overflow: hidden;
  }
  .nav-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 99;
    cursor: pointer;
    transition: opacity var(--transition-normal);
  }
  body.nav-open .nav-backdrop {
    display: block;
  }
  .nav-backdrop[aria-hidden="true"] {
    pointer-events: none;
  }
  .main-nav ul {
    flex-direction: column;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    z-index: 102;
    background: var(--color-surface);
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.35s var(--ease-out), opacity 0.25s var(--ease-out);
  }
  .main-nav:not([aria-hidden="true"]) ul {
    max-height: 26rem;
    opacity: 1;
  }
  .main-nav ul li {
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  }
  .main-nav ul li:last-child {
    border-bottom: none;
  }
  .main-nav .nav-sub {
    position: static;
    min-width: 0;
    padding: 0 0 0 var(--space-lg);
    border: none;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
  }
  .main-nav .nav-sub li {
    border-bottom: none;
  }
  .main-nav .nav-sub a {
    padding: 0.5rem var(--space-lg);
    font-size: 1rem;
  }
  .main-nav a {
    padding: 1rem var(--space-lg);
    font-size: 1.0625rem;
  }
  .main-nav a[aria-current="page"] {
    color: var(--color-primary);
    font-weight: 700;
    padding-left: var(--space-lg);
    border-left: 3px solid var(--color-primary);
    margin-left: var(--space-md);
  }
}

/* ========== Main content ========== */
main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-lg);
  min-height: calc(100vh - var(--header-height) - 12rem);
}
body.home main {
  padding-top: 0;
}
/* Tighter space between header and first page title (h1) on inner pages */
main > section.section:first-child {
  padding-block-start: var(--space-lg);
}

/* ========== Footer ========== */
.site-footer {
  background: var(--color-primary);
  color: var(--color-surface);
  padding: var(--space-2xl) var(--space-lg);
  margin-top: var(--space-3xl);
  border-top: 3px solid var(--color-highlight);
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-highlight-alt), var(--color-highlight), var(--color-highlight-alt));
  opacity: 0.9;
}

.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}
@media (min-width: 48rem) {
  .site-footer__inner {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: space-between;
  }
}

.site-footer a {
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition-fast);
}
.site-footer a:hover {
  color: var(--color-surface);
}

.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm) var(--space-md);
}
.site-footer nav a {
  padding: var(--space-xs) 0;
}
.site-footer nav a + a::before {
  content: "\00b7";
  margin: 0 var(--space-md);
  color: rgba(255, 255, 255, 0.5);
  font-weight: 700;
}
.site-footer nav a:first-of-type::before {
  display: none;
}

.site-footer small {
  opacity: 0.8;
}

/* Sections – consistent spacing, no alternating backgrounds */
.section {
  padding-block: var(--space-3xl);
}
.section--card {
  background: var(--color-surface);
  padding: var(--space-2xl);
  border-radius: 0.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.section--reveal {
  opacity: 0;
  transform: translateY(1.25rem);
  transition: opacity 0.6s var(--ease-out), transform 0.6s var(--ease-out);
}
.section--reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}
/* Page title (h1) – same accent on all main sections */
.section > .section__title {
  padding-left: var(--space-md);
  border-left: 4px solid var(--color-primary);
}
.section--form .contact-form {
  max-width: 32rem;
}
.form-thanks {
  max-width: 32rem;
}
.form-thanks--error .form-thanks__message {
  color: var(--color-primary);
}
.form-thanks__message {
  font-size: 1.125rem;
  font-weight: 500;
  margin-bottom: var(--space-lg);
}
.section__meta {
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

.section__title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  margin: 0 0 var(--space-lg);
  color: var(--color-primary);
  position: relative;
  padding-bottom: var(--space-sm);
}
.section__title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 3rem;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-highlight));
  border-radius: 2px;
}

.section__subtitle {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin: var(--space-xl) 0 var(--space-sm);
  color: var(--color-primary);
  padding-left: var(--space-md);
  border-left: 3px solid var(--color-primary);
}
/* Brand accent per service: purple, cyan, orange from logo */
.section__subtitle:nth-of-type(3n+1) { border-left-color: var(--color-primary); }
.section__subtitle:nth-of-type(3n+2) { border-left-color: var(--color-highlight); }
.section__subtitle:nth-of-type(3n+3) { border-left-color: var(--color-highlight-alt); }

.why-list {
  margin: 0 0 var(--space-xl);
  padding-left: 1.25rem;
  max-width: 40rem;
}
.why-list li {
  margin-bottom: var(--space-md);
}
.why-list strong {
  color: var(--color-primary);
}
.trust-links {
  margin-bottom: var(--space-lg);
}
.trust-links a {
  font-weight: 600;
}

/* Product/page: lead, prose, feature grid */
.section__lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 40rem;
  margin: 0 0 var(--space-2xl);
}
.prose {
  max-width: 48rem;
}
.prose ul {
  margin: 0 0 var(--space-lg);
  padding-left: 1.25rem;
}
.prose li {
  margin-bottom: var(--space-sm);
}
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr));
  gap: var(--space-md);
  list-style: none;
  margin: 0 0 var(--space-2xl);
  padding: 0;
}
@media (min-width: var(--bp-md)) {
  .feature-grid {
    grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
  }
}
.feature-grid__item {
  display: block;
  padding: var(--space-md) var(--space-lg);
  background: rgba(133, 3, 176, 0.08);
  border-left: 3px solid var(--color-primary);
  border-radius: 0.25rem;
  font-weight: 600;
  color: var(--color-primary);
}
.section__cta-text {
  margin: 0 0 var(--space-lg);
  font-size: 1.125rem;
}

.software-list {
  list-style: none;
  margin: 0 0 var(--space-2xl);
  padding: 0;
}
.software-list__item {
  padding: var(--space-xl) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}
.software-list__item:last-child {
  border-bottom: none;
}
.software-list__item .section__subtitle {
  margin-top: 0;
}
.software-list__item .section__subtitle a {
  color: var(--color-primary);
}
.software-list__item .section__subtitle a:hover {
  color: var(--color-secondary);
}

/* ========== Hero ========== */
.hero {
  position: relative;
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  margin: 0 0 var(--space-2xl);
  min-height: min(32rem, 60vh);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--hero-gradient);
  background-image: url("../images/hero-banner-web-small.jpg"), var(--hero-gradient);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  color: var(--color-surface);
  overflow: hidden;
  border-radius: 0 0 2rem 2rem;
  box-shadow:
    0 4px 20px rgba(133, 3, 176, 0.2),
    0 0 0 1px rgba(255, 255, 255, 0.06) inset,
    0 8px 32px rgba(0, 0, 0, 0.15);
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 50% at 50% 120%, transparent 40%, rgba(0, 0, 0, 0.25) 100%),
    linear-gradient(145deg, rgba(92, 3, 144, 0.78) 0%, rgba(133, 3, 176, 0.65) 40%, rgba(13, 122, 138, 0.55) 100%);
  z-index: 0;
  border-radius: 0 0 2rem 2rem;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -20%;
  right: -10%;
  width: 55%;
  max-width: 28rem;
  height: 85%;
  background: radial-gradient(ellipse, rgba(115, 236, 255, 0.18) 0%, transparent 65%);
  z-index: 0;
  pointer-events: none;
}
.hero__accent {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: block;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-highlight), var(--color-highlight-alt), var(--color-primary));
  z-index: 1;
  border-radius: 0 0 2rem 2rem;
  box-shadow: 0 -2px 12px rgba(115, 236, 255, 0.4);
}
.hero__logo-wrap {
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-md);
}
.hero__logo {
  display: block;
  max-width: min(340px, 75vw);
  height: auto;
  filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.35));
  opacity: 0;
  transform: translateY(-3rem) scale(0.92);
  transition: opacity 0.9s var(--ease-out), transform 0.9s var(--ease-out);
}
.hero__logo.hero__logo--in {
  opacity: 1;
  transform: translateY(0) scale(1);
}
.hero .hero__title,
.hero .hero__subtitle,
.hero .cta {
  position: relative;
  z-index: 1;
}
.hero .hero__title {
  animation: heroFadeIn 0.7s var(--ease-out) 0.35s both;
}
.hero .hero__subtitle {
  animation: heroFadeIn 0.7s var(--ease-out) 0.5s both;
}
.hero .hero__cta {
  animation: heroFadeIn 0.7s var(--ease-out) 0.65s both;
  background: var(--color-highlight);
  color: var(--color-primary);
  border: 2px solid rgba(255, 255, 255, 0.5);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
}
.hero .hero__cta:hover {
  background: var(--color-surface);
  color: var(--color-primary);
  border-color: var(--color-surface);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.3);
}
@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(1rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 700;
  margin: 0 0 var(--space-sm);
  color: var(--color-surface);
  letter-spacing: -0.02em;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.35);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: rgba(255, 255, 255, 0.95);
  max-width: 36rem;
  margin: 0 auto var(--space-xl);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.3);
}
@media (max-width: var(--bp-sm)) {
  .hero {
    padding: var(--space-2xl) var(--space-md);
    min-height: min(26rem, 55vh);
  }
  .hero__logo {
    max-width: min(280px, 75vw);
  }
}

/* ========== CTAs ========== */
.cta {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-weight: 600;
  background: var(--color-highlight);
  color: var(--color-primary);
  border-radius: 0.375rem;
  transition: background var(--transition-normal), transform var(--transition-fast), color var(--transition-fast);
}
.cta:hover {
  background: var(--color-primary);
  color: var(--color-surface);
  transform: translateY(-2px);
}

.cta--secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}
.cta--secondary:hover {
  background: var(--color-primary);
  color: var(--color-surface);
}

/* ========== Contact form ========== */
.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea {
  width: 100%;
  max-width: 100%;
  padding: var(--space-md);
  font: inherit;
  border: 1px solid rgba(0, 0, 0, 0.12);
  border-radius: 0.375rem;
  background: var(--color-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(133, 3, 176, 0.2);
}
.form-group textarea {
  min-height: 8rem;
  resize: vertical;
}
.required {
  color: var(--color-primary);
}
button.cta[type="submit"],
.cta--submit {
  cursor: pointer;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}
.cta--submit:disabled,
.contact-form.is-sending .cta--submit {
  cursor: not-allowed;
  opacity: 0.85;
}
.cta__spinner {
  display: inline-block;
  width: 1.125rem;
  height: 1.125rem;
  border: 2px solid rgba(255, 255, 255, 0.35);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: cta-spin 0.7s linear infinite;
}
.cta__spinner[hidden] {
  display: none;
}
@keyframes cta-spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========== Utility ========== */
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}