/* ==========================================================================
   Erepal Technologies - Stylesheet
   ========================================================================== */

:root {
  --color-bg: #050816;
  --color-surface: rgba(11, 18, 36, 0.84);
  --color-surface-strong: #0f1730;
  --color-surface-alt: #121c38;
  --color-primary: #123a8f;
  --color-primary-bright: #1f6fff;
  --color-accent: #36c2ff;
  --color-text: #f5f8ff;
  --color-text-muted: #9ca9c7;
  --color-border: rgba(255, 255, 255, 0.12);
  --color-shadow: rgba(0, 0, 0, 0.4);
  --gradient-primary: linear-gradient(135deg, #36c2ff 0%, #1f6fff 45%, #123a8f 100%);
  --gradient-surface: radial-gradient(circle at top, rgba(54, 194, 255, 0.16), transparent 36%),
    linear-gradient(180deg, rgba(11, 18, 36, 0.94), rgba(5, 8, 22, 1));
  --font-display: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Inter', ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow-lg: 0 30px 80px rgba(0, 0, 0, 0.3);
  --shadow-card: 0 18px 48px rgba(0, 0, 0, 0.25);
  --radius-sm: 14px;
  --radius-md: 20px;
  --radius-lg: 28px;
  --container: 1200px;
  --transition: 180ms ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background:
    radial-gradient(circle at top left, rgba(54, 194, 255, 0.12), transparent 24%),
    radial-gradient(circle at top right, rgba(31, 111, 255, 0.12), transparent 22%),
    var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

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

main {
  flex: 1;
  overflow: hidden;
}

.container {
  width: min(calc(100% - 2rem), var(--container));
  margin: 0 auto;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  background: rgba(5, 8, 22, 0.72);
  border-bottom: 1px solid var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 84px;
  gap: 1rem;
}

.site-header__actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.site-nav__link {
  color: var(--color-text-muted);
  transition: color var(--transition);
  font-weight: 500;
}

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

.menu-toggle {
  display: none;
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 999px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, 0.04);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 0.35rem;
  cursor: pointer;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: var(--color-text);
  display: block;
  transition: transform 200ms ease, opacity 200ms ease;
}

.mobile-nav {
  max-height: 0;
  overflow: hidden;
  transition: max-height 220ms ease;
  border-top: 1px solid transparent;
  background: rgba(5, 8, 22, 0.96);
}

.mobile-nav--open {
  max-height: 360px;
  border-top-color: var(--color-border);
}

.mobile-nav__inner {
  display: flex;
  flex-direction: column;
  padding: 1rem 0 1.5rem;
  gap: 1rem;
}

.mobile-nav__link {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  padding: 0.25rem 0;
}

.mobile-nav__link--active {
  color: var(--color-accent);
}

.mobile-nav__cta {
  width: fit-content;
  margin-top: 0.5rem;
}

.logo {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
}

.logo__image {
  display: block;
  width: min(100%, 280px);
  height: auto;
}

.logo--compact .logo__image {
  width: min(100%, 220px);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.9rem 1.35rem;
  border: 1px solid transparent;
  font-weight: 600;
  font-size: 0.95rem;
  transition:
    transform var(--transition),
    border-color var(--transition),
    background var(--transition),
    color var(--transition),
    box-shadow var(--transition);
  cursor: pointer;
  text-decoration: none;
}

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

.button:disabled {
  cursor: not-allowed;
  opacity: 0.72;
  transform: none;
}

.button--primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 16px 40px rgba(31, 111, 255, 0.28);
}

.button--secondary {
  border-color: rgba(54, 194, 255, 0.4);
  background: rgba(255, 255, 255, 0.02);
  color: var(--color-text);
}

.button--secondary:hover {
  background: rgba(54, 194, 255, 0.1);
  border-color: var(--color-accent);
}

.button--ghost {
  padding-left: 0;
  padding-right: 0;
  background: transparent;
  color: var(--color-accent);
}

.button--ghost:hover {
  color: #72d4ff;
  text-decoration: underline;
}

.hero-section {
  position: relative;
  padding: 6rem 0 4rem;
}

.hero-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-surface);
  pointer-events: none;
}

.hero-section__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 2rem;
  align-items: center;
}

.hero-section__eyebrow,
.section-heading__eyebrow,
.page-hero__eyebrow,
.cta-section__eyebrow,
.hero-panel__eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.22em;
  color: var(--color-accent);
  font-size: 0.78rem;
  margin: 0 0 1rem;
  font-weight: 600;
}

.hero-section h1,
.page-hero h1,
.cta-section h2,
.section-heading h2 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.08;
  letter-spacing: -0.04em;
}

.hero-section h1 {
  font-size: clamp(2.8rem, 8vw, 5.4rem);
  max-width: 12ch;
}

.hero-section__description,
.page-hero p,
.section-heading__description,
.info-card p,
.timeline-card p,
.content-card p,
.site-footer__tagline,
.contact-form__feedback {
  color: var(--color-text-muted);
  line-height: 1.7;
}

.hero-section__actions,
.cta-section__actions,
.section-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-panel,
.content-card,
.info-card,
.timeline-card,
.contact-form,
.contact-detail-card,
.page-hero,
.cta-section__inner {
  border: 1px solid var(--color-border);
  background: rgba(11, 18, 36, 0.72);
  box-shadow: var(--shadow-card);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  padding: 2rem;
  border-radius: var(--radius-lg);
}

.hero-panel__glow {
  position: absolute;
  inset: -15% auto auto -15%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(54, 194, 255, 0.45), transparent 60%);
  filter: blur(10px);
}

.hero-stats {
  display: grid;
  gap: 1rem;
  position: relative;
}

.hero-stat-card {
  display: grid;
  gap: 0.4rem;
  padding: 1.15rem;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.hero-stat-card strong {
  font-size: 1.1rem;
}

.hero-stat-card span,
.capability-strip span,
.site-footer__links a,
.site-footer__links span {
  color: var(--color-text-muted);
}

.capability-strip {
  padding: 0 0 2rem;
}

.capability-strip__inner {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 1rem;
}

.capability-strip span {
  display: flex;
  justify-content: center;
  padding: 1rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--color-border);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 500;
}

.section-block {
  padding: 5rem 0;
}

.section-block--muted {
  background: linear-gradient(180deg, rgba(17, 26, 51, 0.24), rgba(5, 8, 22, 0));
}

.section-heading {
  max-width: 44rem;
  margin-bottom: 2rem;
}

.section-heading--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-heading h2 {
  font-size: clamp(2rem, 4.6vw, 3.5rem);
}

.two-column-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  align-items: start;
}

.content-card,
.info-card,
.timeline-card,
.contact-detail-card,
.contact-form,
.page-hero,
.cta-section__inner {
  border-radius: var(--radius-lg);
  padding: 1.6rem;
}

.card-grid {
  display: grid;
  gap: 1.5rem;
}

.card-grid--three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.card-grid--two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-card {
  display: grid;
  gap: 1rem;
}

.solution-card {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  transition:
    transform 260ms ease,
    border-color 260ms ease,
    box-shadow 260ms ease,
    background 260ms ease;
  animation: solution-float 6s ease-in-out infinite;
}

.solution-card:hover {
  transform: translateY(-8px);
  border-color: rgba(54, 194, 255, 0.28);
  box-shadow: 0 24px 60px rgba(7, 15, 36, 0.45);
  background: rgba(13, 22, 43, 0.88);
}

.solution-card__glow {
  position: absolute;
  inset: auto -10% -30% auto;
  width: 170px;
  height: 170px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(54, 194, 255, 0.18), transparent 65%);
  filter: blur(10px);
  z-index: -1;
  transition: transform 260ms ease, opacity 260ms ease;
}

.solution-card:hover .solution-card__glow {
  transform: scale(1.12);
  opacity: 1;
}

.solution-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.solution-card__icon-wrap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3.5rem;
  height: 3.5rem;
  border-radius: 18px;
  color: var(--color-text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.04)),
    var(--gradient-primary);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.14),
    0 14px 28px rgba(31, 111, 255, 0.18);
}

.solution-card__pulse {
  width: 0.7rem;
  height: 0.7rem;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 0 rgba(54, 194, 255, 0.45);
  animation: solution-pulse 2.4s ease-out infinite;
}

.solution-card__footer {
  margin-top: auto;
  padding-top: 0.5rem;
}

.info-card h3,
.info-card h2,
.timeline-card h3 {
  margin: 0;
  font-size: 1.35rem;
}

.info-card span {
  color: var(--color-accent);
  line-height: 1.6;
}

.info-card--large {
  min-height: 100%;
}

.card-grid .solution-card:nth-child(2n) {
  animation-delay: 0.3s;
}

.card-grid .solution-card:nth-child(3n) {
  animation-delay: 0.6s;
}

.timeline-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 1rem;
}

.timeline-card {
  display: grid;
  gap: 0.85rem;
}

.timeline-card__index {
  color: var(--color-accent);
  font-size: 0.95rem;
  letter-spacing: 0.16em;
  font-weight: 700;
}

.cta-section {
  padding: 2rem 0 5rem;
}

.cta-section__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
  background: linear-gradient(135deg, rgba(18, 58, 143, 0.86), rgba(5, 8, 22, 0.96));
}

.cta-section h2 {
  font-size: clamp(2rem, 4.6vw, 3rem);
  max-width: 14ch;
}

.contact-details {
  display: grid;
  gap: 1rem;
  margin-top: 2rem;
}

.contact-detail-card {
  display: grid;
  gap: 0.5rem;
}

.contact-detail-card span {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.contact-detail-card a:hover {
  color: var(--color-accent);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.contact-form__grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
}

.contact-form label {
  display: grid;
  gap: 0.5rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  padding: 0.95rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--color-text);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.contact-form select option {
  background: #0b1224;
  color: #f5f8ff;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  border-color: rgba(54, 194, 255, 0.55);
  box-shadow: 0 0 0 4px rgba(54, 194, 255, 0.12);
}

.contact-form__honeypot {
  position: absolute !important;
  left: -9999px !important;
  opacity: 0 !important;
  pointer-events: none !important;
}

.contact-form__feedback {
  min-height: 1.6rem;
  margin: 0;
  font-weight: 500;
  transition: opacity 200ms ease;
}

.contact-form__feedback--success {
  color: #89f0b7;
}

.contact-form__feedback--error {
  color: #ff9da8;
}

.page-hero {
  margin-top: 2rem;
}

.page-hero--legal {
  margin: 2rem auto 5rem;
  width: min(calc(100% - 2rem), var(--container));
}

.page-hero h1 {
  font-size: clamp(2.3rem, 5vw, 4rem);
  max-width: 13ch;
}

.site-footer {
  padding: 2.5rem 0 3.5rem;
  border-top: 1px solid var(--color-border);
  margin-top: auto;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr;
  gap: 1.5rem;
}

.site-footer__heading {
  margin: 0 0 1rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--color-accent);
  font-size: 0.76rem;
  font-weight: 600;
}

.site-footer__links {
  display: grid;
  gap: 0.7rem;
}

.site-footer__links a {
  transition: color var(--transition);
}

.site-footer__links a:hover {
  color: var(--color-accent);
}

@keyframes solution-float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-6px);
  }
}

@keyframes solution-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(54, 194, 255, 0.35);
    opacity: 0.9;
  }
  70% {
    box-shadow: 0 0 0 14px rgba(54, 194, 255, 0);
    opacity: 1;
  }
  100% {
    box-shadow: 0 0 0 0 rgba(54, 194, 255, 0);
    opacity: 0.9;
  }
}

@media (max-width: 1100px) {
  .hero-section__inner,
  .two-column-grid,
  .contact-grid,
  .card-grid--three,
  .card-grid--two,
  .timeline-grid,
  .site-footer__inner,
  .capability-strip__inner {
    grid-template-columns: 1fr 1fr;
  }

  .timeline-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .site-footer__inner {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 820px) {
  .site-nav,
  .site-header__actions .button {
    display: none;
  }

  .menu-toggle {
    display: inline-flex;
  }

  .hero-section {
    padding-top: 4rem;
  }

  .hero-section__inner,
  .two-column-grid,
  .contact-grid,
  .card-grid--three,
  .card-grid--two,
  .timeline-grid,
  .site-footer__inner,
  .capability-strip__inner,
  .contact-form__grid {
    grid-template-columns: 1fr;
  }

  .cta-section__inner {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 560px) {
  .container,
  .page-hero--legal {
    width: min(calc(100% - 1.25rem), var(--container));
  }

  .hero-section h1,
  .page-hero h1,
  .section-heading h2,
  .cta-section h2 {
    max-width: none;
  }

  .logo__image {
    width: min(100%, 210px);
  }

  .content-card,
  .info-card,
  .timeline-card,
  .contact-detail-card,
  .contact-form,
  .page-hero,
  .cta-section__inner,
  .hero-panel {
    padding: 1.2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition: none !important;
  }

  .solution-card,
  .solution-card__pulse {
    animation: none !important;
  }
}