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

:root {
  --color-primary: #1a3a5c;
  --color-primary-light: #2a5a8c;
  --color-accent: #3b82f6;
  --color-accent-hover: #2563eb;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-bg-dark: #0f172a;
  --color-border: #e2e8f0;
  --font-heading: 'Inter', system-ui, -apple-system, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --max-width: 1200px;
  --transition: 0.3s ease;
}

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

ul { list-style: none; }

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

/* ===== Typography ===== */
h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.25rem); }
h2 { font-size: clamp(1.5rem, 3.5vw, 2.25rem); }
h3 { font-size: 1.25rem; }

p {
  color: var(--color-text-light);
  max-width: 65ch;
}

/* ===== Layout ===== */
.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

.section {
  padding: 5rem 0;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-body);
}

.btn--primary {
  background: var(--color-accent);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

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

.btn--outline:hover {
  background: var(--color-accent);
  color: #fff;
}

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

.btn--white:hover {
  background: var(--color-bg-alt);
  transform: translateY(-1px);
}

/* ===== Header / Nav ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition);
}

.header--scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

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

.nav__logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: -0.5px;
}

.nav__logo span {
  color: var(--color-accent);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.nav__link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--color-text-light);
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: width var(--transition);
}

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

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

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

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

/* ===== Hero ===== */
.hero {
  padding: 10rem 0 6rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, #e8f0fe 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

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

.hero__tag {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-accent);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero__title {
  margin-bottom: 1.5rem;
}

.hero__subtitle {
  font-size: 1.15rem;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero__actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ===== Features / Cards ===== */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  transition: all var(--transition);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.08);
  border-color: transparent;
}

.card__icon {
  width: 56px;
  height: 56px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.card__title {
  margin-bottom: 0.75rem;
}

.card__text {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ===== Section Headers ===== */
.section__header {
  text-align: center;
  margin-bottom: 1rem;
}

.section__header p {
  margin: 1rem auto 0;
}

.section__tag {
  display: inline-block;
  padding: 0.4rem 1rem;
  background: rgba(59, 130, 246, 0.1);
  color: var(--color-accent);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

/* ===== About Preview ===== */
.about-preview {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-preview__img {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 16px;
  height: 400px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.about-preview__img svg {
  width: 200px;
  height: 200px;
  stroke: rgba(255, 255, 255, 0.2);
  fill: none;
  stroke-width: 0.5;
}

.about-preview__content h2 {
  margin-bottom: 1.5rem;
}

.about-preview__content p {
  margin-bottom: 1.25rem;
}

.about-preview__content .btn {
  margin-top: 0.5rem;
}

/* ===== Stats ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  padding: 3rem 0;
}

.stat {
  text-align: center;
}

.stat__number {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat__label {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* ===== CTA Banner ===== */
.cta {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  border-radius: 16px;
  padding: 4rem;
  text-align: center;
  margin: 2rem 0;
}

.cta h2 {
  color: #fff;
  margin-bottom: 1rem;
}

.cta p {
  color: rgba(255, 255, 255, 0.8);
  margin: 0 auto 2rem;
  max-width: 50ch;
}

.cta .btn {
  margin: 0 0.5rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 2rem;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer__brand {
  max-width: 300px;
}

.footer__logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 1rem;
}

.footer__logo span {
  color: var(--color-accent);
}

.footer__brand p {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
  line-height: 1.7;
}

.footer__heading {
  font-size: 0.9rem;
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1.25rem;
}

.footer__links li {
  margin-bottom: 0.75rem;
}

.footer__links a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
}

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

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.4);
}

/* ===== Page Header (inner pages) ===== */
.page-header {
  padding: 9rem 0 4rem;
  background: linear-gradient(135deg, var(--color-bg) 0%, #e8f0fe 100%);
  text-align: center;
}

.page-header p {
  margin: 1rem auto 0;
  font-size: 1.1rem;
}

/* ===== About Page ===== */
.about-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.value-card {
  text-align: center;
  padding: 2.5rem 2rem;
}

.value-card__icon {
  width: 64px;
  height: 64px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.5rem;
}

.value-card__icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.value-card h3 {
  margin-bottom: 0.75rem;
}

.value-card p {
  margin: 0 auto;
  font-size: 0.95rem;
}

/* ===== Team ===== */
.team {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

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

.team-member__photo {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  margin: 0 auto 1.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.team-member__photo svg {
  width: 64px;
  height: 64px;
  stroke: rgba(255, 255, 255, 0.5);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.team-member h3 {
  margin-bottom: 0.25rem;
}

.team-member__role {
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 500;
}

/* ===== Services Page ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  margin-top: 3rem;
}

.service-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 3rem 2.5rem;
  transition: all var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.08);
  border-color: transparent;
}

.service-card__icon {
  width: 64px;
  height: 64px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.75rem;
}

.service-card__icon svg {
  width: 32px;
  height: 32px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.service-card p {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.service-card__features {
  list-style: none;
  padding: 0;
}

.service-card__features li {
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: var(--color-text-light);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.service-card__features li::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--color-accent);
  border-radius: 50%;
  flex-shrink: 0;
}

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-info__item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 2rem;
}

.contact-info__icon {
  width: 48px;
  height: 48px;
  background: rgba(59, 130, 246, 0.1);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info__icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-accent);
  fill: none;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.contact-info__item h3 {
  margin-bottom: 0.25rem;
}

.contact-info__item p {
  font-size: 0.95rem;
}

.contact-info__item a {
  color: var(--color-accent);
}

.contact-info__item a:hover {
  text-decoration: underline;
}

.contact-form {
  background: var(--color-bg-alt);
  padding: 2.5rem;
  border-radius: 16px;
  border: 1px solid var(--color-border);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form .btn {
  width: 100%;
  padding: 1rem;
  font-size: 1rem;
}

/* ===== Hero Image ===== */
.hero-image {
  margin-top: 3rem;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.12);
  max-width: 720px;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Testimonials ===== */
.testimonials {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.testimonial {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  position: relative;
}

.testimonial::before {
  content: '\201C';
  font-size: 4rem;
  color: var(--color-accent);
  opacity: 0.2;
  position: absolute;
  top: 12px;
  left: 20px;
  line-height: 1;
  font-family: Georgia, serif;
}

.testimonial__text {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.testimonial__author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.testimonial__avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.testimonial__name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--color-text);
}

.testimonial__role {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav__links {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: var(--color-bg);
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    border-bottom: 1px solid var(--color-border);
    transform: translateY(-110%);
    transition: transform var(--transition);
  }

  .nav__links--open {
    transform: translateY(0);
  }

  .nav__toggle {
    display: flex;
  }

  .hero {
    padding: 8rem 0 4rem;
  }

  .about-preview {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .about-preview__img {
    height: 280px;
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }

  .footer__brand {
    grid-column: 1 / -1;
  }

  .footer__bottom {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

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

  .cta {
    padding: 3rem 2rem;
  }

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

@media (max-width: 480px) {
  .stats {
    grid-template-columns: 1fr;
  }

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

  .hero__actions {
    flex-direction: column;
  }

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