/* ===== DESIGN TOKENS ===== */
:root {
  /* Type Scale */
  --text-xs:   clamp(0.75rem,  0.7rem  + 0.25vw, 0.875rem);
  --text-sm:   clamp(0.875rem, 0.8rem  + 0.35vw, 1rem);
  --text-base: clamp(1rem,     0.95rem + 0.25vw, 1.125rem);
  --text-lg:   clamp(1.125rem, 1rem    + 0.75vw, 1.5rem);
  --text-xl:   clamp(1.5rem,   1.2rem  + 1.25vw, 2.25rem);
  --text-2xl:  clamp(2rem,     1.2rem  + 2.5vw,  3.5rem);
  --text-3xl:  clamp(2.5rem,   1rem    + 4vw,    5rem);

  /* Spacing */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-interactive: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Content widths */
  --content-narrow: 640px;
  --content-default: 960px;
  --content-wide: 1200px;
  --content-full: 100%;

  /* Fonts */
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body: 'Switzer', 'Helvetica Neue', sans-serif;
}

/* ===== LIGHT MODE (Dental: warm cream + sage green) ===== */
:root, [data-theme="light"] {
  --color-bg:             #FAFAF6;
  --color-surface:        #F5F3EE;
  --color-surface-2:      #EEECE6;
  --color-surface-offset: #E8E5DE;
  --color-border:         #D6D3CC;
  --color-divider:        #E0DDD7;

  --color-text:           #2B2B24;
  --color-text-muted:     #6B6B60;
  --color-text-faint:     #A3A298;
  --color-text-inverse:   #FAFAF6;

  --color-primary:        #4A7C59;
  --color-primary-hover:  #3B6347;
  --color-primary-active: #2D4C37;

  --color-accent:         #8B6F47;

  --shadow-sm: 0 1px 2px oklch(0.2 0.01 80 / 0.06);
  --shadow-md: 0 4px 12px oklch(0.2 0.01 80 / 0.08);
  --shadow-lg: 0 12px 32px oklch(0.2 0.01 80 / 0.12);
}

/* ===== DARK MODE ===== */
[data-theme="dark"] {
  --color-bg:             #1A1A17;
  --color-surface:        #222220;
  --color-surface-2:      #2A2A27;
  --color-surface-offset: #1E1E1B;
  --color-border:         #3D3D38;
  --color-divider:        #333330;

  --color-text:           #DDDDD6;
  --color-text-muted:     #9A9A90;
  --color-text-faint:     #636360;
  --color-text-inverse:   #1A1A17;

  --color-primary:        #6FA87A;
  --color-primary-hover:  #8ABF94;
  --color-primary-active: #5C9466;

  --color-accent:         #C4A66D;

  --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
  --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
  --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --color-bg:             #1A1A17;
    --color-surface:        #222220;
    --color-surface-2:      #2A2A27;
    --color-surface-offset: #1E1E1B;
    --color-border:         #3D3D38;
    --color-divider:        #333330;
    --color-text:           #DDDDD6;
    --color-text-muted:     #9A9A90;
    --color-text-faint:     #636360;
    --color-text-inverse:   #1A1A17;
    --color-primary:        #6FA87A;
    --color-primary-hover:  #8ABF94;
    --color-primary-active: #5C9466;
    --color-accent:         #C4A66D;
    --shadow-sm: 0 1px 2px oklch(0 0 0 / 0.2);
    --shadow-md: 0 4px 12px oklch(0 0 0 / 0.3);
    --shadow-lg: 0 12px 32px oklch(0 0 0 / 0.4);
  }
}

/* ===== GLOBAL STYLES ===== */
a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover { color: var(--color-primary-hover); }

.container {
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* ===== SKIP LINK ===== */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-md);
  z-index: 100;
  font-size: var(--text-sm);
}
.skip-link:focus { top: var(--space-2); }

/* ===== HEADER ===== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: oklch(from var(--color-bg) l c h / 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid oklch(from var(--color-text) l c h / 0.08);
  transition: box-shadow 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}
.header--scrolled { box-shadow: var(--shadow-sm); }
.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: var(--space-3);
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: var(--space-4);
}
.header__logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  color: var(--color-text);
}
.header__logo svg { flex-shrink: 0; }
.header__logo-text {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  line-height: 1.1;
  letter-spacing: -0.01em;
}
.header__logo-text span {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-weight: 400;
}

.header__nav { display: flex; align-items: center; gap: var(--space-6); }
.header__nav-links {
  display: flex;
  gap: var(--space-5);
  list-style: none;
}
.header__nav-links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  letter-spacing: 0.01em;
}
.header__nav-links a:hover,
.header__nav-links a.active { color: var(--color-text); }

.header__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-inverse);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
}
.header__cta:hover { background: var(--color-primary-hover); color: var(--color-text-inverse); }

.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  cursor: pointer;
}
.theme-toggle:hover { color: var(--color-text); background: var(--color-surface); }

/* Mobile nav */
.mobile-nav { display: none; }
.mobile-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: var(--space-1);
  cursor: pointer;
}
.mobile-toggle span {
  display: block;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s ease;
}

@media (max-width: 768px) {
  .mobile-toggle { display: flex; }
  .header__nav-links,
  .header__cta,
  .theme-toggle { display: none; }
  .header__nav { gap: var(--space-2); }

  .mobile-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4);
    box-shadow: var(--shadow-md);
  }
  .mobile-nav.open { display: block; }
  .mobile-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }
  .mobile-nav a {
    display: block;
    font-size: var(--text-base);
    color: var(--color-text);
    padding: var(--space-2) 0;
    text-decoration: none;
  }
  .mobile-nav .mobile-cta {
    display: block;
    text-align: center;
    margin-top: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-primary);
    color: var(--color-text-inverse);
    border-radius: var(--radius-full);
    font-weight: 500;
  }
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 70vh;
  display: flex;
  align-items: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to right,
    oklch(from var(--color-bg) l c h / 0.92) 0%,
    oklch(from var(--color-bg) l c h / 0.7) 50%,
    oklch(from var(--color-bg) l c h / 0.2) 100%
  );
}
.hero__content {
  position: relative;
  z-index: 1;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding: var(--space-16) var(--space-4);
  max-width: 600px;
  margin-left: max(var(--space-8), calc((100vw - var(--content-wide)) / 2 + var(--space-4)));
}
.hero__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-3);
}
.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  color: var(--color-text);
  margin-bottom: var(--space-4);
  line-height: 1.08;
}
.hero__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
  max-width: 480px;
  line-height: 1.7;
}
.hero__actions {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  border: none;
  white-space: nowrap;
}
.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn--primary:hover { background: var(--color-primary-hover); color: var(--color-text-inverse); }
.btn--outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}
.btn--outline:hover { border-color: var(--color-text-muted); background: var(--color-surface); }

/* ===== SECTION SPACING ===== */
.section {
  padding: clamp(var(--space-12), 6vw, var(--space-24)) var(--space-4);
}
.section--surface { background: var(--color-surface); }
.section__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}
.section__header {
  margin-bottom: clamp(var(--space-8), 4vw, var(--space-12));
}
.section__label {
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-2);
}
.section__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.section__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  line-height: 1.7;
}

/* ===== SERVICES GRID (Homepage) ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(320px, 100%), 1fr));
  gap: var(--space-4);
}
.service-card {
  background: var(--color-bg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
  transition: box-shadow var(--transition-interactive), transform var(--transition-interactive);
}
.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
.service-card__img {
  aspect-ratio: 4/3;
  overflow: hidden;
}
.service-card__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.service-card:hover .service-card__img img { transform: scale(1.04); }
.service-card__body { padding: var(--space-4) var(--space-5); }
.service-card__title {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  color: var(--color-text);
  margin-bottom: var(--space-2);
}
.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.65;
}
.service-card__link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--text-sm);
  color: var(--color-primary);
  font-weight: 500;
  margin-top: var(--space-3);
}
.service-card__link:hover { gap: var(--space-2); }

/* ===== ABOUT SECTION ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
}
.about-grid__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.about-grid__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 16/10;
}
.about-grid__content {}
.about-grid__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-4);
}
.about-grid__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
}

/* ===== STATS ===== */
.stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-6);
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-8);
}
.stat__number {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-primary);
  line-height: 1;
}
.stat__label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* ===== TESTIMONIALS ===== */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(340px, 100%), 1fr));
  gap: var(--space-4);
}
.testimonial-card {
  background: var(--color-bg);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid oklch(from var(--color-text) l c h / 0.06);
}
.testimonial-card__stars {
  color: var(--color-accent);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
  letter-spacing: 0.1em;
}
.testimonial-card__quote {
  font-size: var(--text-base);
  color: var(--color-text);
  line-height: 1.7;
  margin-bottom: var(--space-4);
  font-style: italic;
}
.testimonial-card__author {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}
.testimonial-card__role {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* ===== CTA BANNER ===== */
.cta-banner {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: clamp(var(--space-10), 5vw, var(--space-16)) var(--space-4);
  text-align: center;
}
.cta-banner__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
  color: var(--color-text-inverse);
}
.cta-banner__desc {
  font-size: var(--text-base);
  opacity: 0.85;
  max-width: 500px;
  margin-inline: auto;
  margin-bottom: var(--space-6);
  line-height: 1.7;
}
.cta-banner .btn--white {
  background: white;
  color: var(--color-primary);
  padding: var(--space-3) var(--space-8);
}
.cta-banner .btn--white:hover { background: #f0f0f0; }

/* ===== FOOTER ===== */
.footer {
  background: var(--color-surface);
  padding: var(--space-12) var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-divider);
}
.footer__inner {
  max-width: var(--content-wide);
  margin-inline: auto;
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--space-8);
  margin-bottom: var(--space-8);
}
.footer__brand-desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-top: var(--space-3);
  max-width: 280px;
}
.footer__heading {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}
.footer__links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.footer__links a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  text-decoration: none;
}
.footer__links a:hover { color: var(--color-text); }
.footer__contact-item {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-2);
  line-height: 1.5;
}
.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  flex-wrap: wrap;
  gap: var(--space-2);
}
.footer__bottom a { color: var(--color-text-faint); }
.footer__bottom a:hover { color: var(--color-text-muted); }

@media (max-width: 768px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
  }
}
@media (max-width: 480px) {
  .footer__grid { grid-template-columns: 1fr; }
}

/* ===== SERVICES PAGE ===== */
.page-hero {
  padding: clamp(var(--space-12), 6vw, var(--space-20)) var(--space-4);
  text-align: center;
  background: var(--color-surface);
}
.page-hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  margin-bottom: var(--space-3);
}
.page-hero__desc {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 560px;
  margin-inline: auto;
  line-height: 1.7;
}

.service-detail {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
  padding: clamp(var(--space-8), 4vw, var(--space-12)) 0;
  border-bottom: 1px solid var(--color-divider);
}
.service-detail:last-child { border-bottom: none; }
.service-detail:nth-child(even) { direction: rtl; }
.service-detail:nth-child(even) > * { direction: ltr; }
.service-detail__img {
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.service-detail__img img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
}
.service-detail__content {}
.service-detail__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  margin-bottom: var(--space-3);
}
.service-detail__text {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: var(--space-3);
}
.service-detail__features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.service-detail__features li {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-left: var(--space-5);
  position: relative;
}
.service-detail__features li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary);
  opacity: 0.5;
}

@media (max-width: 768px) {
  .service-detail {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  .service-detail:nth-child(even) { direction: ltr; }
}

/* ===== CONTACT PAGE ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.form-group { display: flex; flex-direction: column; gap: var(--space-1); }
.form-group label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
}
.form-group input,
.form-group textarea,
.form-group select {
  padding: var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  color: var(--color-text);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px oklch(from var(--color-primary) l c h / 0.12);
}
.form-group textarea { resize: vertical; min-height: 120px; }

.contact-info {}
.contact-info__card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-4);
}
.contact-info__card h3 {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  margin-bottom: var(--space-4);
}
.contact-info__item {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  align-items: flex-start;
}
.contact-info__item:last-child { margin-bottom: 0; }
.contact-info__icon {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--color-primary);
  margin-top: 2px;
}
.contact-info__text {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}
.contact-info__text strong {
  display: block;
  color: var(--color-text);
  font-weight: 500;
  margin-bottom: 2px;
}

.map-placeholder {
  background: var(--color-surface-2);
  border-radius: var(--radius-lg);
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-faint);
  font-size: var(--text-sm);
  border: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .contact-grid { grid-template-columns: 1fr; }
}

/* ===== SCROLL ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}