/* ===== Reset & Base ===== */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --color-primary: #1a5f7a;
  --color-primary-dark: #134a5f;
  --color-primary-light: #2980b9;
  --color-accent: #27ae60;
  --color-accent-dark: #1e8c4c;
  --color-bg: #f8fafb;
  --color-bg-alt: #eef3f6;
  --color-text: #2c3e50;
  --color-text-light: #5a6c7d;
  --color-white: #ffffff;
  --color-border: #dce4e8;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --max-width: 1140px;
  --transition: 0.25s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

a:hover {
  color: var(--color-primary-light);
}

h1, h2, h3, h4 {
  line-height: 1.25;
  font-weight: 700;
  color: var(--color-text);
}

h1 { font-size: 2.75rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.35rem; }

/* ===== Utility ===== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 80px 0;
}

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

.text-center {
  text-align: center;
}

.btn {
  display: inline-block;
  padding: 14px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
  line-height: 1.4;
}

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

.btn--primary:hover {
  background: var(--color-primary-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn--accent:hover {
  background: var(--color-accent-dark);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

.btn--outline:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

/* ===== Header / Nav ===== */
.header {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-primary);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

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

.nav__links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav__links a {
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-primary);
  background: var(--color-bg-alt);
}

.nav__cta {
  margin-left: 8px;
}

.nav__cta .btn {
  padding: 10px 24px;
  font-size: 0.9rem;
}

/* Mobile nav toggle */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 6px 0;
  border-radius: 2px;
  transition: all var(--transition);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a7a5f 100%);
  color: var(--color-white);
  padding: 100px 0;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 50%;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 50%;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 680px;
}

.hero__tagline {
  display: inline-block;
  background: rgba(255, 255, 255, 0.15);
  padding: 6px 16px;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.02em;
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: 20px;
  font-size: 3rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.2rem;
  opacity: 0.92;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero__actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Features / Benefits Grid ===== */
.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.feature-card {
  background: var(--color-white);
  padding: 36px 28px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--color-border);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.feature-card__icon {
  width: 52px;
  height: 52px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--color-primary);
}

.feature-card__icon svg {
  width: 26px;
  height: 26px;
}

.feature-card h3 {
  margin-bottom: 12px;
}

.feature-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ===== Stats Banner ===== */
.stats {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 48px 0;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  text-align: center;
}

.stat__number {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.stat__label {
  font-size: 0.9rem;
  opacity: 0.85;
  margin-top: 4px;
}

/* ===== About Section ===== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about__text h2 {
  margin-bottom: 20px;
}

.about__text p {
  color: var(--color-text-light);
  margin-bottom: 16px;
  line-height: 1.7;
}

.about__values {
  list-style: none;
  margin-top: 24px;
}

.about__values li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.95rem;
}

.about__values li svg {
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.about__image {
  background: linear-gradient(135deg, var(--color-bg-alt) 0%, #d4e6f1 100%);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
}

.about__image svg {
  width: 100%;
  max-width: 280px;
  height: auto;
  color: var(--color-primary);
  opacity: 0.6;
}

/* ===== Team ===== */
.team__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.team-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 32px;
  text-align: center;
  border: 1px solid var(--color-border);
}

.team-card__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: var(--color-bg-alt);
  margin: 0 auto 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.team-card h3 {
  margin-bottom: 4px;
  font-size: 1.1rem;
}

.team-card__role {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.team-card p {
  margin-top: 12px;
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

/* ===== FAQ ===== */
.faq__list {
  max-width: 760px;
  margin: 48px auto 0;
}

.faq__item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
  transition: box-shadow var(--transition);
}

.faq__item:hover {
  box-shadow: var(--shadow-sm);
}

.faq__question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 24px;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: inherit;
  line-height: 1.4;
}

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

.faq__icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform var(--transition);
}

.faq__item.open .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, padding 0.35s ease;
}

.faq__answer__inner {
  padding: 0 24px 20px;
  color: var(--color-text-light);
  line-height: 1.7;
  font-size: 0.95rem;
}

.faq__item.open .faq__answer {
  max-height: 500px;
}

/* ===== Form ===== */
.form-section {
  max-width: 620px;
  margin: 0 auto;
}

.form-section__intro {
  text-align: center;
  margin-bottom: 40px;
}

.form-section__intro h2 {
  margin-bottom: 12px;
}

.form-section__intro p {
  color: var(--color-text-light);
  font-size: 1.05rem;
}

.form {
  background: var(--color-white);
  padding: 40px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--color-border);
}

.form__group {
  margin-bottom: 24px;
}

.form__label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-text);
}

.form__label span {
  color: #e74c3c;
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius);
  background: var(--color-bg);
  color: var(--color-text);
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26, 95, 122, 0.12);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: #a0adb8;
}

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

.form__hint {
  font-size: 0.8rem;
  color: var(--color-text-light);
  margin-top: 6px;
}

.form__select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a6c7d' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.form .btn {
  width: 100%;
  padding: 16px;
  font-size: 1.05rem;
  margin-top: 8px;
}

.form__success {
  display: none;
  text-align: center;
  padding: 40px 20px;
}

.form__success.show {
  display: block;
}

.form__success svg {
  width: 56px;
  height: 56px;
  color: var(--color-accent);
  margin: 0 auto 16px;
}

.form__success h3 {
  margin-bottom: 8px;
  font-size: 1.4rem;
}

.form__success p {
  color: var(--color-text-light);
}

/* ===== Contact ===== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  margin-top: 48px;
}

.contact-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: 36px;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: box-shadow var(--transition);
}

.contact-card:hover {
  box-shadow: var(--shadow-md);
}

.contact-card__icon {
  width: 48px;
  height: 48px;
  background: var(--color-bg-alt);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--color-primary);
}

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

.contact-card h3 {
  font-size: 1.05rem;
  margin-bottom: 6px;
}

.contact-card p {
  color: var(--color-text-light);
  font-size: 0.95rem;
  line-height: 1.6;
}

.contact-card a {
  color: var(--color-primary);
  font-weight: 500;
}

.contact__message {
  grid-column: 1 / -1;
  background: var(--color-bg-alt);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.contact__message h3 {
  margin-bottom: 8px;
}

.contact__message p {
  color: var(--color-text-light);
  margin-bottom: 24px;
}

/* ===== CTA Banner ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a7a5f 100%);
  color: var(--color-white);
  padding: 64px 0;
  text-align: center;
}

.cta-banner h2 {
  color: var(--color-white);
  margin-bottom: 12px;
}

.cta-banner p {
  opacity: 0.9;
  font-size: 1.1rem;
  margin-bottom: 28px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.7);
  padding: 56px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer__brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 280px;
}

.footer h4 {
  color: var(--color-white);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.footer__links {
  list-style: none;
}

.footer__links li {
  margin-bottom: 10px;
}

.footer__links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9rem;
  transition: color var(--transition);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 40px;
  padding-top: 24px;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== Page Header (inner pages) ===== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, #1a7a5f 100%);
  color: var(--color-white);
  padding: 56px 0;
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  font-size: 2.25rem;
  margin-bottom: 8px;
}

.page-header p {
  opacity: 0.85;
  font-size: 1.1rem;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .features__grid,
  .team__grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

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

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.5rem; }

  .section { padding: 56px 0; }

  /* Mobile nav */
  .nav__toggle {
    display: block;
    z-index: 1001;
  }

  .nav__links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-white);
    flex-direction: column;
    align-items: stretch;
    padding: 80px 24px 24px;
    gap: 4px;
    box-shadow: var(--shadow-lg);
    transition: right var(--transition);
    z-index: 1000;
  }

  .nav__links.open {
    right: 0;
  }

  .nav__cta {
    margin-left: 0;
    margin-top: 12px;
  }

  .nav__cta .btn {
    width: 100%;
  }

  .nav__overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
  }

  .nav__overlay.open {
    display: block;
  }

  /* Hero */
  .hero { padding: 64px 0; }
  .hero h1 { font-size: 2.2rem; }
  .hero p { font-size: 1.05rem; }

  /* Grids */
  .features__grid,
  .team__grid {
    grid-template-columns: 1fr !important;
  }

  .stats__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

  .about__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about__image {
    order: -1;
    min-height: 260px;
    padding: 32px;
  }

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

  .footer__grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .form {
    padding: 28px 20px;
  }
}

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

  .hero__actions .btn {
    width: 100%;
  }

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