/* ============================================
   Survelia Gest — Landing Page Styles
   ============================================ */

:root {
  --color-primary: #0d4f6e;
  --color-primary-light: #1565a0;
  --color-primary-dark: #083549;
  --color-accent: #2aab8e;
  --color-accent-light: #3dccb0;
  --color-surface: #f7f9fb;
  --color-surface-alt: #eef3f7;
  --color-text: #1a2b3c;
  --color-text-muted: #5a6d7e;
  --color-white: #ffffff;
  --color-border: #d8e2ea;

  --font-sans: 'DM Sans', system-ui, sans-serif;
  --font-serif: 'Instrument Serif', Georgia, serif;

  --header-height: 72px;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(13, 79, 110, 0.08);
  --shadow-lg: 0 12px 48px rgba(13, 79, 110, 0.12);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Typography ---- */

.section__label {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary-dark);
  margin-bottom: 1rem;
}

.section__title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--color-primary);
}

.section__desc {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  max-width: 600px;
}

.section__header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section__header .section__desc {
  margin: 0 auto;
}

.section {
  padding: 6rem 0;
}

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

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  border-radius: 50px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: var(--color-white);
  border-color: var(--color-accent);
}

.btn--primary:hover {
  background: var(--color-accent-light);
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(42, 171, 142, 0.3);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
}

.btn--outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--color-white);
}

.btn--full {
  width: 100%;
}

/* ---- Header / Nav ---- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  transition: background var(--transition), box-shadow var(--transition);
}

.header--scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 1.125rem;
  color: var(--color-white);
  transition: color var(--transition);
}

.header--scrolled .nav__logo {
  color: var(--color-primary-dark);
}

.nav__logo-icon {
  width: 36px;
  height: 36px;
  color: var(--color-accent);
}

.nav__logo-text strong {
  font-weight: 700;
}

.nav__menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition);
}

.header--scrolled .nav__link {
  color: var(--color-text-muted);
}

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

.header--scrolled .nav__link:hover {
  color: var(--color-primary);
}

.nav__link--cta {
  padding: 0.5rem 1.25rem;
  background: var(--color-accent);
  color: var(--color-white) !important;
  border-radius: 50px;
}

.nav__link--cta:hover {
  background: var(--color-accent-light);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition);
  border-radius: 2px;
}

.header--scrolled .nav__toggle span {
  background: var(--color-primary-dark);
}

.nav__toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav__toggle.active span:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

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

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + 3rem) 0 4rem;
  overflow: hidden;
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 50%, var(--color-primary-light) 100%);
  z-index: -2;
}

.hero__bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(42, 171, 142, 0.15) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
}

.hero__bg::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 120px;
  background: linear-gradient(to top, var(--color-white), transparent);
}

.hero__content {
  text-align: center;
  color: var(--color-white);
}

.hero__badge {
  display: inline-block;
  padding: 0.375rem 1rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50px;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: clamp(2.25rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
}

.hero__title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--color-accent-light);
}

.hero__subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.8);
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  max-width: 800px;
  margin: 0 auto;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
}

.hero__stat-value {
  display: block;
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.hero__stat-label {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.6);
}

/* ---- About ---- */

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about__text p {
  color: var(--color-text-muted);
  margin-bottom: 1rem;
}

.about__visual {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about__card {
  padding: 1.5rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.about__card:hover {
  transform: translateX(8px);
}

.about__card--accent {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.about__card--accent p {
  color: rgba(255, 255, 255, 0.8);
}

.about__card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.about__card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
}

.about__card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

/* ---- Features ---- */

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  padding: 2rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-accent);
}

.feature-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface-alt);
  border-radius: var(--radius);
  color: var(--color-primary);
  margin-bottom: 1.25rem;
}

.feature-card__icon svg {
  width: 24px;
  height: 24px;
}

.feature-card h3 {
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ---- Workflow ---- */

.workflow__timeline {
  position: relative;
  max-width: 700px;
  margin: 0 auto;
}

.workflow__timeline::before {
  content: '';
  position: absolute;
  left: 28px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--color-accent), var(--color-primary-light));
}

.workflow__step {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
  position: relative;
}

.workflow__step:last-child {
  margin-bottom: 0;
}

.workflow__step-number {
  flex-shrink: 0;
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-white);
  border: 2px solid var(--color-accent);
  border-radius: 50%;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-accent);
  z-index: 1;
}

.workflow__step-content {
  padding-top: 0.75rem;
}

.workflow__step-content h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 0.375rem;
}

.workflow__step-content p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
}

/* ---- Benefits ---- */

.benefits__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.benefits__list {
  margin-top: 2rem;
}

.benefits__list li {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.benefits__check {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-accent);
  color: var(--color-white);
  border-radius: 50%;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

.benefits__list strong {
  display: block;
  font-size: 1rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.25rem;
}

.benefits__list p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.benefits__mockup {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

.benefits__mockup-bar {
  display: flex;
  gap: 6px;
  padding: 12px 16px;
  background: var(--color-surface-alt);
  border-bottom: 1px solid var(--color-border);
}

.benefits__mockup-bar span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border);
}

.benefits__mockup-bar span:first-child { background: #ff6b6b; }
.benefits__mockup-bar span:nth-child(2) { background: #ffd93d; }
.benefits__mockup-bar span:nth-child(3) { background: #6bcb77; }

.benefits__mockup-body {
  display: flex;
  min-height: 280px;
}

.benefits__mockup-sidebar {
  width: 60px;
  background: var(--color-primary-dark);
  flex-shrink: 0;
}

.benefits__mockup-main {
  flex: 1;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.benefits__mockup-row {
  height: 12px;
  background: var(--color-surface-alt);
  border-radius: 6px;
  width: 100%;
}

.benefits__mockup-row--short { width: 60%; }
.benefits__mockup-row--medium { width: 80%; }

.benefits__mockup-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin: 8px 0;
}

.benefits__mockup-cards div {
  height: 60px;
  background: linear-gradient(135deg, var(--color-surface-alt), var(--color-border));
  border-radius: 8px;
}

.benefits__mockup-cards div:first-child {
  background: linear-gradient(135deg, rgba(42, 171, 142, 0.2), rgba(42, 171, 142, 0.05));
}

.benefits__mockup-caption {
  text-align: center;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

/* ---- Contact ---- */

.contact__wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
  background: var(--color-primary-dark);
  border-radius: var(--radius-lg);
  padding: 3.5rem;
  color: var(--color-white);
}

.contact__info .section__label {
  color: var(--color-accent-light);
}

.contact__info .section__title {
  color: var(--color-white);
}

.contact__info .section__title em {
  color: var(--color-accent-light);
}

.contact__info > p {
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 2rem;
}

.contact__details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact__detail {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.85);
  transition: color var(--transition);
}

.contact__detail:hover {
  color: var(--color-accent-light);
}

.contact__detail svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.contact__form {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2rem;
}

.form__group {
  margin-bottom: 1.25rem;
}

.form__group label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary-dark);
  margin-bottom: 0.375rem;
}

.form__group input,
.form__group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: border-color var(--transition);
}

.form__group input:focus,
.form__group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(42, 171, 142, 0.15);
}

.form__group textarea {
  resize: vertical;
  min-height: 100px;
}

.form__note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 0.75rem;
}

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

.footer {
  background: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__brand .nav__logo-text {
  color: var(--color-white);
  font-size: 1.125rem;
}

.footer__brand p {
  font-size: 0.875rem;
  margin-top: 0.375rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem 1.75rem;
}

.footer__links a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--transition);
}

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

.footer__company {
  text-align: center;
  padding: 2rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__company-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.footer__company-detail {
  font-size: 0.875rem;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1.5rem;
  flex-wrap: wrap;
}

.footer__copy {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer__contacts {
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer__contacts a {
  color: rgba(255, 255, 255, 0.75);
  transition: color var(--transition);
}

.footer__contacts a:hover {
  color: var(--color-accent-light);
}

.footer__contacts span {
  margin: 0 0.5rem;
}

/* ---- Reveal animations ---- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */

@media (max-width: 992px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about__grid,
  .benefits__grid,
  .contact__wrapper {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .benefits__visual {
    order: -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 4rem 0;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1.5rem;
    gap: 0;
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    transition: all var(--transition);
    pointer-events: none;
  }

  .nav__menu.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav__menu li {
    width: 100%;
  }

  .nav__link {
    display: block;
    padding: 0.875rem 0;
    color: var(--color-text) !important;
    border-bottom: 1px solid var(--color-border);
  }

  .nav__link--cta {
    text-align: center;
    margin-top: 0.5rem;
    border: none;
  }

  .hero__stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .features__grid {
    grid-template-columns: 1fr;
  }

  .contact__wrapper {
    padding: 2rem 1.5rem;
  }

  .footer__top {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .footer__links {
    justify-content: center;
  }

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

@media (max-width: 480px) {
  .hero__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
  }
}