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

:root {
  --color-primary: #2a7d7b;
  --color-primary-dark: #1e5f5e;
  --color-primary-light: #e8f4f3;
  --color-primary-lighter: #f2f9f8;
  --color-secondary: #c4836c;
  --color-secondary-light: #fdf0eb;
  --color-text: #1a2332;
  --color-text-light: #5a6577;
  --color-text-muted: #8892a0;
  --color-bg: #faf8f6;
  --color-white: #ffffff;
  --color-border: #e8e4e0;
  --color-border-light: #f0ece8;
  --font-heading: 'DM Serif Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --container-max: 1200px;
  --container-padding: 1.25rem;
  --header-height: 64px;
  --radius: 0.75rem;
  --radius-lg: 1rem;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.1);
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body.menu-open {
  overflow: hidden;
}

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

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

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

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.2;
}

/* ===== CONTAINER ===== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(250, 248, 246, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  z-index: 100;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.header.scrolled {
  border-bottom-color: var(--color-border);
  box-shadow: var(--shadow-sm);
}

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

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo-text {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--color-text);
}

/* Menu Toggle */
.menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 110;
}

.menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Nav - Mobile */
.nav {
  position: fixed;
  top: 0;
  right: -100%;
  width: 280px;
  height: 100dvh;
  background: var(--color-white);
  padding: calc(var(--header-height) + 2rem) 2rem 2rem;
  transition: right var(--transition);
  box-shadow: var(--shadow-lg);
  z-index: 105;
}

.nav.open {
  right: 0;
}

.nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.nav-link {
  display: block;
  padding: 0.75rem 0;
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border-light);
  transition: color var(--transition);
}

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

.nav-link.is-active {
  color: var(--color-primary);
  font-weight: 600;
}

/* Nav overlay */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 104;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition), visibility var(--transition);
}

.nav-overlay.visible {
  opacity: 1;
  visibility: visible;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: 0.5rem;
  left: 0.5rem;
  z-index: 300;
  padding: 0.625rem 0.875rem;
  background: var(--color-text);
  color: var(--color-white);
  border-radius: 0.5rem;
  text-decoration: none;
}

.skip-link:focus-visible {
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* ===== HERO ===== */
.hero {
  padding: calc(var(--header-height) + 2rem) 0 3rem;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  background: linear-gradient(160deg, var(--color-bg) 0%, var(--color-primary-lighter) 50%, var(--color-bg) 100%);
}

.hero-inner {
  display: flex;
  flex-direction: column-reverse;
  align-items: center;
  gap: 2rem;
}

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

.hero-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  background: var(--color-primary-light);
  padding: 0.375rem 1rem;
  border-radius: 2rem;
  margin-bottom: 1rem;
}

.hero-title {
  font-size: 2.5rem;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.05rem;
  line-height: 1.6;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero-subtitle strong {
  color: var(--color-primary);
  font-weight: 600;
}

.hero-role {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  align-items: center;
}

/* Hero Image */
.hero-image {
  width: 220px;
  flex-shrink: 0;
}

.hero-image-frame {
  position: relative;
  border-radius: 50%;
  overflow: hidden;
  aspect-ratio: 1;
  border: 4px solid var(--color-white);
  box-shadow: var(--shadow-lg), 0 0 0 1px var(--color-border);
}

.hero-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 15%;
}

/* Hero Scroll Indicator */
.hero-scroll {
  position: absolute;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: rgba(42, 125, 123, 0.15);
  position: relative;
  overflow: hidden;
}

.scroll-line::before {
  content: '';
  position: absolute;
  top: -100%;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--color-primary);
  animation: lineDown 2s ease-in-out infinite;
}

@keyframes lineDown {
  0% { top: -100%; }
  50% { top: 0; }
  100% { top: 100%; }
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 500;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

/* ===== SECTIONS ===== */
.section {
  padding: 4rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-label {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.section-title {
  font-size: 1.75rem;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1rem;
  color: var(--color-text-light);
  max-width: 540px;
  margin: 0 auto;
}

/* ===== ABOUT ===== */
.section-about {
  background: var(--color-white);
}

.about-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.about-quote {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--color-text);
  border-left: 3px solid var(--color-primary);
  padding-left: 1.25rem;
  margin-bottom: 1.5rem;
}

.about-quote em {
  color: var(--color-primary);
  font-style: italic;
}

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

.about-text strong {
  color: var(--color-text);
  font-weight: 600;
}

.about-philosophy {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-secondary);
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border-light);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.stat {
  text-align: center;
  padding: 1.25rem 1rem;
  background: var(--color-primary-lighter);
  border-radius: var(--radius);
  border: 1px solid var(--color-primary-light);
}

.stat-number {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 0.25rem;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--color-text-light);
  line-height: 1.3;
}

/* ===== SERVICES ===== */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.service-card {
  padding: 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
  position: relative;
}

.service-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.service-card--featured {
  border-color: var(--color-primary);
  border-width: 2px;
  background: linear-gradient(135deg, var(--color-white) 0%, var(--color-primary-lighter) 100%);
}

.service-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.service-icon svg {
  width: 100%;
  height: 100%;
}

.service-card h3 {
  font-size: 1.15rem;
  color: var(--color-text);
  margin-bottom: 0.5rem;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.service-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-primary-dark);
  background: var(--color-primary-light);
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  margin-top: 0.75rem;
}

/* ===== PROCESS ===== */
.section-process {
  background: var(--color-primary-lighter);
}

.process-grid {
  list-style: none;
  counter-reset: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.process-step {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.875rem;
  align-items: start;
  padding: 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.process-step-number {
  display: inline-flex;
  width: 1.875rem;
  height: 1.875rem;
  border-radius: 50%;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-white);
  background: var(--color-primary);
}

.process-step h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.process-step p {
  grid-column: 2;
  font-size: 0.92rem;
  color: var(--color-text-light);
}

.trust-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.trust-card {
  padding: 1.25rem;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.trust-card h3 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

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

/* ===== EDUCATION ===== */
.section-education {
  background: var(--color-white);
}

.education-grid {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.education-group-title {
  font-size: 1.1rem;
  color: var(--color-text);
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary-light);
}

.education-item {
  display: flex;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border-light);
}

.education-item:last-child {
  border-bottom: none;
}

.education-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--color-primary);
  margin-top: 0.125rem;
}

.education-icon svg {
  width: 100%;
  height: 100%;
}

.education-item--cert .education-icon {
  color: var(--color-secondary);
}

.education-content h4 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.125rem;
}

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

/* ===== CONTACT ===== */
.section-contact {
  background: linear-gradient(160deg, var(--color-bg) 0%, var(--color-primary-lighter) 100%);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  max-width: 800px;
  margin: 0 auto;
}

.contact-map {
  margin-top: 1.25rem;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.contact-map iframe {
  display: block;
  width: 100%;
  min-height: 320px;
}

.contact-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1.5rem;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: var(--color-text);
  transition: transform var(--transition), box-shadow var(--transition);
}

a.contact-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  color: var(--color-text);
}

.contact-card--wa {
  border-color: #25d366;
  border-width: 2px;
}

.contact-card--wa .contact-icon {
  color: #25d366;
}

.contact-card--wa .contact-action {
  color: #25d366;
}

.contact-icon {
  color: var(--color-primary);
  margin-bottom: 0.75rem;
}

.contact-card h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.contact-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: 0.75rem;
}

.contact-action {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

/* ===== FOOTER ===== */
.footer {
  padding: 2rem 0;
  background: var(--color-text);
  color: var(--color-text-muted);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  text-align: center;
}

.footer-copy {
  font-size: 0.85rem;
  color: var(--color-text-muted);
}

.site-version {
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #94a3b8;
}

/* Site Signature */
.site-signature {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.9rem;
  border: 1px solid #4b6f8f;
  border-radius: 0.4rem;
  background: rgba(96, 165, 250, 0.08);
  color: #dbeafe;
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 600;
  white-space: nowrap;
  transition: all 0.2s ease;
}

.site-signature::before {
  content: "\25C6";
  font-size: 0.625rem;
  color: #60a5fa;
}

.site-signature:hover {
  color: #ffffff;
  border-color: #7db0de;
  background: rgba(96, 165, 250, 0.18);
}

@media (min-width: 768px) {
  .footer-inner {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    text-align: center;
    gap: 1rem;
  }

  .footer-copy {
    justify-self: start;
  }

  .site-signature {
    justify-self: end;
  }
}

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

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

/* ===== RESPONSIVE - TABLET (576px) ===== */
@media (min-width: 576px) {
  :root {
    --container-padding: 1.5rem;
  }

  .hero-title {
    font-size: 3rem;
  }

  .hero-image {
    width: 260px;
  }

  .hero-actions {
    flex-direction: row;
    justify-content: center;
  }

  .section-title {
    font-size: 2rem;
  }

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

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

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

  .contact-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== RESPONSIVE - TABLET LANDSCAPE (768px) ===== */
@media (min-width: 768px) {
  :root {
    --container-padding: 2rem;
    --header-height: 72px;
  }

  .menu-toggle {
    display: none;
  }

  .nav {
    position: static;
    width: auto;
    height: auto;
    background: transparent;
    padding: 0;
    box-shadow: none;
  }

  .nav-list {
    flex-direction: row;
    gap: 0;
    align-items: center;
  }

  .nav-link {
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    border-bottom: none;
    color: var(--color-text-light);
  }

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

  .hero {
    padding-top: calc(var(--header-height) + 3rem);
    padding-bottom: 4rem;
  }

  .hero-inner {
    flex-direction: row;
    gap: 3rem;
  }

  .hero-content {
    text-align: left;
    flex: 1;
  }

  .hero-subtitle {
    margin-left: 0;
    margin-right: 0;
  }

  .hero-actions {
    justify-content: flex-start;
  }

  .hero-image {
    width: 300px;
  }

  .hero-image-frame {
    border-radius: var(--radius-lg);
    aspect-ratio: 4 / 5;
  }

  .section {
    padding: 5rem 0;
  }

  .about-grid {
    flex-direction: row;
    gap: 3rem;
  }

  .about-text {
    flex: 1.5;
  }

  .about-stats {
    flex: 1;
    align-self: start;
    position: sticky;
    top: calc(var(--header-height) + 2rem);
  }

  .education-grid {
    flex-direction: row;
    gap: 3rem;
  }

  .education-group {
    flex: 1;
  }
}

/* ===== RESPONSIVE - NOTEBOOK (992px) ===== */
@media (min-width: 992px) {
  .hero-title {
    font-size: 3.5rem;
  }

  .hero-subtitle {
    font-size: 1.1rem;
  }

  .hero-image {
    width: 360px;
  }

  .section-title {
    font-size: 2.25rem;
  }

  .services-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .service-card {
    padding: 2rem;
  }

  .about-quote {
    font-size: 1.25rem;
  }
}

/* ===== RESPONSIVE - DESKTOP (1200px) ===== */
@media (min-width: 1200px) {
  :root {
    --container-max: 1200px;
  }

  .hero-title {
    font-size: 4rem;
  }

  .hero-image {
    width: 400px;
  }

  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .service-card--featured {
    grid-column: span 2;
  }
}

/* ===== RESPONSIVE - LARGE SCREENS (1440px) ===== */
@media (min-width: 1440px) {
  :root {
    --container-max: 1320px;
  }

  .hero-title {
    font-size: 4.5rem;
  }

  .section {
    padding: 6rem 0;
  }
}

/* ===== ACCESSIBILITY ===== */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .scroll-line::before {
    animation: none;
  }
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Skip to content (screen readers) */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}