/* ============================================
   Dr. Mariam Erradi — Pediatric Showcase
   Design System & Styles
   ============================================ */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Playfair+Display:wght@500;600;700&display=swap');

/* ============================================
   1. CSS Custom Properties (Design Tokens)
   ============================================ */

:root {
  /* ---- Color Palette — Light Mode ---- */
  --clr-primary:        hsl(210, 70%, 48%);
  --clr-primary-light:  hsl(210, 72%, 62%);
  --clr-primary-dark:   hsl(210, 72%, 36%);
  --clr-primary-bg:     hsl(210, 60%, 96%);

  --clr-accent:         hsl(152, 52%, 48%);
  --clr-accent-light:   hsl(152, 48%, 62%);
  --clr-accent-dark:    hsl(152, 52%, 36%);
  --clr-accent-bg:      hsl(152, 40%, 95%);

  --clr-bg:             hsl(210, 30%, 99%);
  --clr-bg-alt:         hsl(210, 20%, 96%);
  --clr-surface:        hsl(0, 0%, 100%);
  --clr-surface-hover:  hsl(210, 20%, 97%);

  --clr-text:           hsl(215, 25%, 18%);
  --clr-text-secondary: hsl(215, 15%, 45%);
  --clr-text-muted:     hsl(215, 10%, 62%);

  --clr-border:         hsl(210, 15%, 90%);
  --clr-border-light:   hsl(210, 15%, 94%);

  --clr-hero-overlay:   linear-gradient(135deg,
                           hsla(210, 70%, 48%, .88) 0%,
                           hsla(152, 52%, 48%, .78) 100%);

  --clr-shadow:         hsla(215, 25%, 18%, .08);
  --clr-shadow-lg:      hsla(215, 25%, 18%, .12);

  /* ---- Typography ---- */
  --ff-body:     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --ff-heading:  'Playfair Display', Georgia, 'Times New Roman', serif;

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-md:   1.125rem;
  --fs-lg:   1.25rem;
  --fs-xl:   1.5rem;
  --fs-2xl:  2rem;
  --fs-3xl:  2.5rem;
  --fs-4xl:  3.25rem;
  --fs-hero: clamp(2.5rem, 5vw + 1rem, 4.5rem);

  --fw-light:     300;
  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;
  --fw-extrabold: 800;

  --lh-tight:  1.2;
  --lh-normal: 1.6;
  --lh-loose:  1.8;

  /* ---- Spacing ---- */
  --sp-xs:  0.25rem;
  --sp-sm:  0.5rem;
  --sp-md:  1rem;
  --sp-lg:  1.5rem;
  --sp-xl:  2rem;
  --sp-2xl: 3rem;
  --sp-3xl: 4rem;
  --sp-4xl: 6rem;

  /* ---- Layout ---- */
  --max-width:   1200px;
  --nav-height:  72px;

  /* ---- Borders & Radii ---- */
  --radius-sm:   6px;
  --radius-md:   10px;
  --radius-lg:   16px;
  --radius-xl:   24px;
  --radius-full: 50%;

  /* ---- Transitions ---- */
  --transition-fast:   .2s cubic-bezier(.4, 0, .2, 1);
  --transition-base:   .35s cubic-bezier(.4, 0, .2, 1);
  --transition-slow:   .5s cubic-bezier(.4, 0, .2, 1);
  --transition-theme:  .45s cubic-bezier(.4, 0, .2, 1);

  /* ---- Shadows ---- */
  --shadow-sm:  0 1px  3px  var(--clr-shadow);
  --shadow-md:  0 4px  12px var(--clr-shadow);
  --shadow-lg:  0 10px 30px var(--clr-shadow-lg);
  --shadow-xl:  0 20px 50px var(--clr-shadow-lg);
}

/* ============================================
   2. Dark Mode Tokens
   ============================================ */

[data-theme="dark"] {
  --clr-primary:        hsl(210, 65%, 60%);
  --clr-primary-light:  hsl(210, 60%, 72%);
  --clr-primary-dark:   hsl(210, 70%, 48%);
  --clr-primary-bg:     hsl(215, 30%, 14%);

  --clr-accent:         hsl(152, 48%, 55%);
  --clr-accent-light:   hsl(152, 42%, 65%);
  --clr-accent-dark:    hsl(152, 52%, 42%);
  --clr-accent-bg:      hsl(152, 25%, 14%);

  --clr-bg:             hsl(220, 20%, 10%);
  --clr-bg-alt:         hsl(220, 18%, 13%);
  --clr-surface:        hsl(220, 18%, 15%);
  --clr-surface-hover:  hsl(220, 18%, 18%);

  --clr-text:           hsl(210, 15%, 92%);
  --clr-text-secondary: hsl(210, 10%, 68%);
  --clr-text-muted:     hsl(210, 8%, 50%);

  --clr-border:         hsl(220, 12%, 24%);
  --clr-border-light:   hsl(220, 12%, 20%);

  --clr-hero-overlay:   linear-gradient(135deg,
                           hsla(220, 30%, 10%, .92) 0%,
                           hsla(210, 60%, 18%, .88) 100%);

  --clr-shadow:         hsla(0, 0%, 0%, .3);
  --clr-shadow-lg:      hsla(0, 0%, 0%, .45);
}

/* ============================================
   3. Reset & Base
   ============================================ */

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

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

body {
  font-family: var(--ff-body);
  font-size: var(--fs-base);
  font-weight: var(--fw-regular);
  line-height: var(--lh-normal);
  color: var(--clr-text);
  background-color: var(--clr-bg);
  overflow-x: hidden;
  transition: background-color var(--transition-theme),
              color var(--transition-theme);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  background: none;
}

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ============================================
   4. Utility Classes
   ============================================ */

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

.section {
  padding: var(--sp-4xl) 0;
}

.section-header {
  text-align: center;
  margin-bottom: var(--sp-3xl);
}

.section-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  margin-bottom: var(--sp-md);
  transition: color var(--transition-theme);
}

.section-subtitle {
  font-size: var(--fs-md);
  color: var(--clr-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: var(--lh-loose);
  transition: color var(--transition-theme);
}

.section-line {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 2px;
  margin: var(--sp-md) auto 0;
}

.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;
}

/* ============================================
   5. Buttons
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-sm);
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  letter-spacing: .02em;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  inset: 0;
  background: hsla(0, 0%, 100%, .15);
  transform: translateX(-101%);
  transition: transform var(--transition-base);
  pointer-events: none;
}

.btn:hover::after {
  transform: translateX(0);
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #fff;
  box-shadow: 0 4px 16px hsla(210, 70%, 48%, .35);
}

.btn-primary:hover {
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px hsla(210, 70%, 48%, .45);
}

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

.btn-outline:hover {
  background: var(--clr-primary);
  color: #fff;
  transform: translateY(-2px);
}

.btn-white {
  background: #fff;
  color: var(--clr-primary-dark);
  box-shadow: 0 4px 16px hsla(0, 0%, 0%, .15);
}

.btn-white:hover {
  color: var(--clr-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px hsla(0, 0%, 0%, .2);
}

/* ============================================
   6. Navigation
   ============================================ */

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: hsla(0, 0%, 100%, .85);
  backdrop-filter: blur(16px) saturate(180%);
  -webkit-backdrop-filter: blur(16px) saturate(180%);
  border-bottom: 1px solid var(--clr-border-light);
  transition: background var(--transition-theme),
              border-color var(--transition-theme),
              box-shadow var(--transition-base);
}

[data-theme="dark"] .navbar {
  background: hsla(220, 20%, 10%, .88);
}

.navbar.scrolled {
  box-shadow: var(--shadow-md);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.nav-logo-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.nav-logo-name {
  font-family: var(--ff-heading);
  font-weight: var(--fw-bold);
  font-size: var(--fs-md);
  color: var(--clr-text);
  transition: color var(--transition-theme);
}

.nav-logo-title {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
  font-weight: var(--fw-medium);
  letter-spacing: .04em;
  text-transform: uppercase;
  transition: color var(--transition-theme);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--sp-xl);
}

.nav-link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text-secondary);
  letter-spacing: .02em;
  position: relative;
  padding: var(--sp-xs) 0;
  transition: color var(--transition-fast);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  border-radius: 1px;
  transition: width var(--transition-base);
}

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

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

/* Theme Toggle */
.theme-toggle {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-bg-alt);
  border: 1px solid var(--clr-border);
  color: var(--clr-text-secondary);
  font-size: 1.2rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  flex-shrink: 0;
}

.theme-toggle:hover {
  background: var(--clr-primary-bg);
  color: var(--clr-primary);
  border-color: var(--clr-primary);
  transform: rotate(15deg);
}

.theme-toggle .icon-sun,
.theme-toggle .icon-moon { transition: opacity var(--transition-fast); }

[data-theme="dark"] .theme-toggle .icon-sun  { display: inline; }
[data-theme="dark"] .theme-toggle .icon-moon { display: none;   }
:root .theme-toggle .icon-sun  { display: none;   }
:root .theme-toggle .icon-moon { display: inline; }

/* Hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
  cursor: pointer;
  z-index: 1001;
}

.nav-hamburger span {
  display: block;
  width: 100%;
  height: 2.5px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7.5px) rotate(-45deg);
}

/* ============================================
   7. Hero Section
   ============================================ */

.hero {
  position: relative;
  min-height: 100vh;
  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: var(--clr-hero-overlay);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
  color: #fff;
  padding-top: var(--nav-height);
}

.hero-badge-wrapper {
  text-align: center;
  padding-top: var(--sp-md);
}

@media (min-width: 769px) {
  .hero-badge-wrapper {
    position: absolute;
    top: calc(var(--nav-height) + 20px);
    left: 0;
    right: 0;
    z-index: 3;
    pointer-events: none;
    padding-top: 0;
  }

  .hero-badge-wrapper .hero-badge {
    pointer-events: auto;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 8px 20px;
  background: hsla(210, 70%, 30%, .55);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-radius: var(--radius-xl);
  border: 1px solid hsla(0, 0%, 100%, .25);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: .03em;
  color: #fff;
}

@media (max-width: 768px) {
  .hero-badge {
    background: hsl(0, 0%, 100%);
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-color: hsla(0, 0%, 0%, .08);
    color: var(--clr-text);
    box-shadow: 0 2px 12px hsla(0, 0%, 0%, .12);
  }
}

.hero-badge-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background: var(--clr-accent-light);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: .5; transform: scale(1.4); }
}

.hero-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-hero);
  font-weight: var(--fw-bold);
  line-height: var(--lh-tight);
  margin-bottom: var(--sp-lg);
  color: #ffffff;
}

.hero-title span {
  display: block;
  color: #ffffff;
  background: none;
  -webkit-text-fill-color: #ffffff;
  -webkit-background-clip: initial;
  background-clip: initial;
}

[data-theme="dark"] .hero-title,
[data-theme="dark"] .hero-title span {
  color: #ffffff;
  -webkit-text-fill-color: #ffffff;
}

.hero-description {
  font-size: var(--fs-lg);
  line-height: var(--lh-loose);
  opacity: .9;
  margin-bottom: var(--sp-2xl);
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-md);
}

.hero-stats {
  display: flex;
  gap: var(--sp-2xl);
  margin-top: var(--sp-3xl);
  padding-top: var(--sp-2xl);
  border-top: 1px solid hsla(0, 0%, 100%, .2);
}

.hero-stat-number {
  font-family: var(--ff-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  display: block;
}

.hero-stat-label {
  font-size: var(--fs-sm);
  opacity: .8;
  margin-top: var(--sp-xs);
}

/* Floating shapes decoration */
.hero-shapes {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  overflow: hidden;
}

.hero-shape {
  position: absolute;
  border-radius: var(--radius-full);
  background: hsla(0, 0%, 100%, .06);
  animation: float 20s ease-in-out infinite;
}

.hero-shape:nth-child(1) { width: 300px; height: 300px; top: -80px;  right: -60px;  animation-delay: 0s; }
.hero-shape:nth-child(2) { width: 200px; height: 200px; bottom: 10%; right: 20%;   animation-delay: -5s; }
.hero-shape:nth-child(3) { width: 150px; height: 150px; top: 40%;    left: -40px;   animation-delay: -10s; }

@keyframes float {
  0%, 100% { transform: translateY(0) rotate(0deg); }
  25%      { transform: translateY(-20px) rotate(5deg); }
  50%      { transform: translateY(10px) rotate(-3deg); }
  75%      { transform: translateY(-15px) rotate(2deg); }
}

/* ============================================
   8. About Section
   ============================================ */

.about {
  background: var(--clr-bg-alt);
  transition: background var(--transition-theme);
  overflow: hidden;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
  align-items: center;
}

.about-image-wrapper {
  position: relative;
  overflow: hidden;
}

.about-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  position: relative;
}

.about-image img {
  width: 100%;
  max-height: 500px;
  aspect-ratio: 6 / 5;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.about-image:hover img {
  transform: scale(1.03);
}

.about-image-accent {
  position: absolute;
  bottom: -20px;
  right: -20px;
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, var(--clr-primary-bg), var(--clr-accent-bg));
  border-radius: var(--radius-lg);
  z-index: -1;
  transition: background var(--transition-theme);
}

.about-experience-badge {
  position: absolute;
  bottom: 24px;
  left: -16px;
  background: var(--clr-surface);
  padding: 16px 24px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--sp-md);
  z-index: 2;
  transition: background var(--transition-theme), box-shadow var(--transition-theme);
}

.about-exp-number {
  font-family: var(--ff-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  line-height: 1;
}

.about-exp-text {
  font-size: var(--fs-sm);
  color: var(--clr-text-secondary);
  line-height: 1.3;
}

.about-content {
  padding-left: var(--sp-xl);
}

.about-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--clr-primary-bg);
  color: var(--clr-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-xl);
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: var(--sp-lg);
  transition: background var(--transition-theme), color var(--transition-theme);
}

.about-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-3xl);
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  margin-bottom: var(--sp-lg);
  line-height: var(--lh-tight);
  transition: color var(--transition-theme);
}

.about-text {
  color: var(--clr-text-secondary);
  line-height: var(--lh-loose);
  margin-bottom: var(--sp-lg);
  transition: color var(--transition-theme);
}

.about-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-md);
  margin-top: var(--sp-xl);
}

.about-feature {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  padding: 12px 16px;
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border-light);
  transition: all var(--transition-fast);
}

.about-feature:hover {
  border-color: var(--clr-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.about-feature-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--clr-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: 1rem;
  flex-shrink: 0;
  transition: background var(--transition-theme);
}

.about-feature span {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text);
  transition: color var(--transition-theme);
}

/* ============================================
   9. Services Section
   ============================================ */

.services {
  background: var(--clr-bg);
  transition: background var(--transition-theme);
  overflow: hidden;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-xl);
}

.service-card {
  position: relative;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  text-align: center;
  transition: all var(--transition-base);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--clr-primary), var(--clr-accent));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--sp-lg);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  transition: all var(--transition-base);
}

.service-card:nth-child(1) .service-icon { background: hsla(210, 70%, 48%, .1);  color: var(--clr-primary); }
.service-card:nth-child(2) .service-icon { background: hsla(152, 52%, 48%, .1);  color: var(--clr-accent); }
.service-card:nth-child(3) .service-icon { background: hsla(30,  85%, 55%, .1);  color: hsl(30, 85%, 55%); }
.service-card:nth-child(4) .service-icon { background: hsla(280, 55%, 55%, .1);  color: hsl(280, 55%, 55%); }
.service-card:nth-child(5) .service-icon { background: hsla(0,   70%, 58%, .1);  color: hsl(0, 70%, 58%); }
.service-card:nth-child(6) .service-icon { background: hsla(45,  80%, 50%, .1);  color: hsl(45, 80%, 50%); }

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(-5deg);
}

.service-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-semibold);
  color: var(--clr-text);
  margin-bottom: var(--sp-md);
  transition: color var(--transition-theme);
}

.service-description {
  color: var(--clr-text-secondary);
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  transition: color var(--transition-theme);
}

/* ============================================
   10. Gallery / Images Section
   ============================================ */

.gallery {
  background: var(--clr-bg-alt);
  transition: background var(--transition-theme);
  overflow: hidden;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: var(--sp-lg);
}

.gallery-item {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  cursor: pointer;
}

.gallery-item:first-child {
  grid-column: 1 / 3;
  grid-row: 1 / 3;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.gallery-item:first-child img {
  aspect-ratio: 8 / 5;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, hsla(0, 0%, 0%, .5), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
  display: flex;
  align-items: flex-end;
  padding: var(--sp-lg);
}

.gallery-item:hover .gallery-item-overlay {
  opacity: 1;
}

.gallery-item-caption {
  color: #fff;
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
}

/* ============================================
   11. FAQ Section
   ============================================ */

.faq {
  background: var(--clr-bg);
  transition: background var(--transition-theme);
  overflow: hidden;
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-md);
}

.faq-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-light);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq-item:hover {
  border-color: var(--clr-primary);
}

.faq-item.open {
  box-shadow: var(--shadow-md);
  border-color: var(--clr-primary);
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  padding: var(--sp-lg) var(--sp-xl);
  width: 100%;
  text-align: left;
  font-weight: var(--fw-semibold);
  font-size: var(--fs-base);
  color: var(--clr-text);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--clr-primary);
}

.faq-icon {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  background: var(--clr-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: var(--fs-sm);
  flex-shrink: 0;
  transition: all var(--transition-base);
}

.faq-item.open .faq-icon {
  background: var(--clr-primary);
  color: #fff;
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base),
              padding var(--transition-base);
}

.faq-answer-content {
  padding: 0 var(--sp-xl) var(--sp-lg);
  color: var(--clr-text-secondary);
  line-height: var(--lh-loose);
  font-size: var(--fs-sm);
  transition: color var(--transition-theme);
}

/* ============================================
   12. Contact Section
   ============================================ */

.contact {
  background: var(--clr-bg-alt);
  transition: background var(--transition-theme);
  overflow: hidden;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-3xl);
}

.contact-info-header {
  margin-bottom: var(--sp-2xl);
}

.contact-info-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--clr-primary-bg);
  color: var(--clr-primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-xl);
  text-transform: uppercase;
  letter-spacing: .04em;
  margin-bottom: var(--sp-md);
  transition: background var(--transition-theme), color var(--transition-theme);
}

.contact-info-title {
  font-family: var(--ff-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  margin-bottom: var(--sp-md);
  transition: color var(--transition-theme);
}

.contact-info-text {
  color: var(--clr-text-secondary);
  line-height: var(--lh-loose);
  transition: color var(--transition-theme);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
  margin-bottom: var(--sp-2xl);
}

.contact-detail {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-md);
  padding: var(--sp-lg);
  background: var(--clr-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border-light);
  transition: all var(--transition-fast);
}

.contact-detail:hover {
  border-color: var(--clr-primary);
  transform: translateX(4px);
}

.contact-detail-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--clr-primary-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--clr-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: background var(--transition-theme);
}

.contact-detail-label {
  font-size: var(--fs-xs);
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: .06em;
  font-weight: var(--fw-semibold);
  margin-bottom: 4px;
  transition: color var(--transition-theme);
}

.contact-detail-value {
  font-weight: var(--fw-medium);
  color: var(--clr-text);
  transition: color var(--transition-theme);
}

.contact-detail-value a {
  color: var(--clr-text);
  transition: color var(--transition-fast);
}

.contact-detail-value a:hover {
  color: var(--clr-primary);
}

/* Contact Form */
.contact-form-wrapper {
  background: var(--clr-surface);
  border-radius: var(--radius-lg);
  padding: var(--sp-2xl);
  border: 1px solid var(--clr-border-light);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-theme);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-lg);
}

.form-label {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--clr-text);
  transition: color var(--transition-theme);
}

.form-input,
.form-textarea {
  padding: 14px 16px;
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text);
  font-size: var(--fs-base);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px hsla(210, 70%, 48%, .15);
  background: var(--clr-surface);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--clr-text-muted);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-submit {
  align-self: flex-start;
}

.form-success {
  display: none;
  padding: var(--sp-md);
  background: var(--clr-accent-bg);
  color: var(--clr-accent-dark);
  border-radius: var(--radius-md);
  font-weight: var(--fw-medium);
  border: 1px solid var(--clr-accent);
  transition: background var(--transition-theme), color var(--transition-theme);
}

.form-success.show {
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
  animation: slideUp .4s ease;
}

/* Map */
.contact-map {
  margin-top: var(--sp-3xl);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--clr-border-light);
}

.contact-map iframe {
  width: 100%;
  height: 400px;
  border: 0;
  display: block;
}

@media (max-width: 768px) {
  .contact-map iframe {
    height: 280px;
  }
}

/* ============================================
   13. Footer
   ============================================ */

.footer {
  background: hsl(220, 25%, 12%);
  color: hsl(210, 10%, 75%);
  padding: var(--sp-3xl) 0 0;
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: var(--sp-2xl);
  padding-bottom: var(--sp-3xl);
  border-bottom: 1px solid hsl(220, 15%, 20%);
}

.footer-brand-description {
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  margin-top: var(--sp-md);
  color: hsl(210, 10%, 60%);
}

.footer-social {
  display: flex;
  gap: var(--sp-sm);
  margin-top: var(--sp-lg);
}

.footer-social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: hsl(220, 18%, 18%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: hsl(210, 10%, 65%);
  font-size: var(--fs-md);
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--clr-primary);
  color: #fff;
  transform: translateY(-3px);
}

.footer-heading {
  font-family: var(--ff-heading);
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  color: #fff;
  margin-bottom: var(--sp-lg);
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.footer-link {
  font-size: var(--fs-sm);
  color: hsl(210, 10%, 60%);
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.footer-link:hover {
  color: var(--clr-primary-light);
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-sm);
  font-size: var(--fs-sm);
  color: hsl(210, 10%, 60%);
  margin-bottom: var(--sp-md);
}

.footer-contact-item i {
  color: var(--clr-primary-light);
  margin-top: 3px;
  width: 16px;
  flex-shrink: 0;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-lg) 0;
  font-size: var(--fs-sm);
  color: hsl(210, 10%, 50%);
}

.footer-bottom a {
  color: var(--clr-primary-light);
}

.footer-bottom a:hover {
  color: #fff;
}

/* ============================================
   14. Scroll-to-top Button
   ============================================ */

.scroll-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  color: #fff;
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  cursor: pointer;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

/* ============================================
    14b. WhatsApp Floating Button
    ============================================ */

.whatsapp-float {
  position: fixed;
  bottom: 90px;
  right: 30px;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  background: #25D366;
  color: #fff;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px hsla(142, 70%, 49%, .4);
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition-base);
  cursor: pointer;
  text-decoration: none;
}

.whatsapp-float.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.whatsapp-float:hover {
  color: #fff;
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 24px hsla(142, 70%, 49%, .5);
}

.whatsapp-float-tooltip {
  position: absolute;
  right: calc(100% + 12px);
  background: hsl(220, 25%, 12%);
  color: #fff;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  padding: 8px 14px;
  border-radius: var(--radius-md);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  pointer-events: none;
}

.whatsapp-float-tooltip::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 100%;
  transform: translateY(-50%);
  border: 6px solid transparent;
  border-left-color: hsl(220, 25%, 12%);
}

.whatsapp-float:hover .whatsapp-float-tooltip {
  opacity: 1;
  visibility: visible;
}

/* WhatsApp icon in contact details */
.contact-detail-icon.whatsapp-icon {
  background: hsla(142, 70%, 49%, .12);
  color: #25D366;
}

@media (max-width: 768px) {
  .whatsapp-float {
    bottom: 80px;
    right: 20px;
    width: 50px;
    height: 50px;
    font-size: 1.4rem;
  }

  .whatsapp-float-tooltip {
    display: none;
  }
}

/* ============================================
   15. Animations
   ============================================ */

@keyframes slideUp {
  from { opacity: 0; transform: translateY(30px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(.9); }
  to   { opacity: 1; transform: scale(1); }
}

/* Reveal-on-scroll placeholders */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1),
              transform .7s cubic-bezier(.4, 0, .2, 1);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1),
              transform .7s cubic-bezier(.4, 0, .2, 1);
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(40px);
  transition: opacity .7s cubic-bezier(.4, 0, .2, 1),
              transform .7s cubic-bezier(.4, 0, .2, 1);
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Stagger children */
.stagger-children > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .5s cubic-bezier(.4, 0, .2, 1),
              transform .5s cubic-bezier(.4, 0, .2, 1);
}

.stagger-children.visible > *:nth-child(1) { transition-delay: .05s; }
.stagger-children.visible > *:nth-child(2) { transition-delay: .1s; }
.stagger-children.visible > *:nth-child(3) { transition-delay: .15s; }
.stagger-children.visible > *:nth-child(4) { transition-delay: .2s; }
.stagger-children.visible > *:nth-child(5) { transition-delay: .25s; }
.stagger-children.visible > *:nth-child(6) { transition-delay: .3s; }

.stagger-children.visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   16. Responsive — Tablet (≤ 1024px)
   ============================================ */

@media (max-width: 1024px) {
  .section { padding: var(--sp-3xl) 0; }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-2xl);
  }

  .about-content {
    padding-left: 0;
  }

  .about-image img {
    max-height: 400px;
  }

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

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

  .gallery-item:first-child {
    grid-column: 1 / 3;
    grid-row: auto;
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--sp-xl);
  }
}

/* ============================================
   17. Responsive — Mobile (≤ 768px)
   ============================================ */

@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .hero-badge-wrapper {
    padding-top: calc(var(--nav-height) + 6px);
  }

  .section { padding: var(--sp-2xl) 0; }

  .section-title {
    font-size: var(--fs-2xl);
  }

  .section-subtitle {
    font-size: var(--fs-sm);
  }

  .section-header {
    margin-bottom: var(--sp-xl);
  }

  /* Mobile Nav */
  .nav-hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 75%;
    max-width: 320px;
    height: 100vh;
    height: 100dvh;
    background: var(--clr-surface);
    flex-direction: column;
    align-items: flex-start;
    padding: calc(var(--nav-height) + var(--sp-xl)) var(--sp-xl) var(--sp-xl);
    gap: var(--sp-md);
    box-shadow: -10px 0 30px var(--clr-shadow-lg);
    transition: right var(--transition-base);
    z-index: 999;
    overflow-y: auto;
  }

  .nav-links.open {
    right: 0;
  }

  .nav-link {
    font-size: var(--fs-md);
    padding: var(--sp-sm) 0;
    width: 100%;
    border-bottom: 1px solid var(--clr-border-light);
  }

  .mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: hsla(0, 0%, 0%, .5);
    z-index: 998;
  }

  .mobile-overlay.active {
    display: block;
  }

  /* Hero */
  .hero {
    min-height: 100vh;
    min-height: 100dvh;
  }

  .hero-content {
    padding: calc(var(--nav-height) + var(--sp-lg)) 0 var(--sp-xl);
  }

  .hero-title {
    font-size: clamp(2rem, 6vw, 3rem);
    margin-bottom: var(--sp-md);
  }

  .hero-description {
    font-size: var(--fs-base);
    margin-bottom: var(--sp-xl);
    line-height: var(--lh-normal);
  }

  .hero-stats {
    gap: var(--sp-lg);
    margin-top: var(--sp-xl);
    padding-top: var(--sp-lg);
  }

  .hero-stat-number {
    font-size: var(--fs-xl);
  }

  .hero-stat-label {
    font-size: var(--fs-xs);
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 24px;
  }

  /* About */
  .about-grid {
    gap: var(--sp-xl);
  }

  .about-image img {
    max-height: 300px;
    aspect-ratio: 16 / 10;
  }

  .about-features {
    grid-template-columns: 1fr;
    gap: var(--sp-sm);
  }

  .about-experience-badge {
    left: 12px;
    bottom: 12px;
    padding: 12px 16px;
  }

  .about-exp-number {
    font-size: var(--fs-xl);
  }

  .about-image-accent { display: none; }

  .about-title {
    font-size: var(--fs-xl);
  }

  .about-text {
    font-size: var(--fs-sm);
    margin-bottom: var(--sp-md);
  }

  .about-tag {
    font-size: var(--fs-xs);
    margin-bottom: var(--sp-md);
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-md);
  }

  .service-card {
    padding: var(--sp-xl) var(--sp-lg);
  }

  .service-icon {
    width: 56px;
    height: 56px;
    font-size: 1.4rem;
    margin-bottom: var(--sp-md);
  }

  .service-title {
    font-size: var(--fs-lg);
    margin-bottom: var(--sp-sm);
  }

  .service-description {
    font-size: var(--fs-sm);
  }

  /* Cabinet notice */
  .cabinet-notice {
    padding: var(--sp-xl) var(--sp-md) !important;
  }

  .cabinet-notice p {
    font-size: var(--fs-base) !important;
    line-height: 1.7 !important;
  }

  /* Gallery */
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-item:first-child {
    grid-column: auto;
  }

  .gallery-item img {
    height: 240px;
  }

  /* FAQ */
  .faq-question {
    padding: var(--sp-md) var(--sp-lg);
    font-size: var(--fs-sm);
  }

  .faq-answer-content {
    padding: 0 var(--sp-lg) var(--sp-md);
    font-size: var(--fs-sm);
  }

  /* Contact */
  .contact-info-title {
    font-size: var(--fs-xl);
  }

  .contact-info-text {
    font-size: var(--fs-sm);
  }

  .contact-detail {
    padding: var(--sp-md);
    gap: var(--sp-sm);
  }

  .contact-detail-icon {
    width: 40px;
    height: 40px;
    min-width: 40px;
  }

  .contact-detail-value {
    font-size: var(--fs-sm);
    word-break: break-word;
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
  }

  .contact-form-wrapper {
    padding: var(--sp-lg);
  }

  .form-input,
  .form-textarea {
    padding: 12px 14px;
    font-size: var(--fs-sm);
  }

  .form-submit {
    align-self: stretch;
  }

  .form-submit .btn {
    width: 100%;
    justify-content: center;
  }

  /* Footer */
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--sp-xl);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--sp-sm);
    text-align: center;
  }

  .scroll-top {
    bottom: 20px;
    right: 20px;
    width: 42px;
    height: 42px;
  }
}

/* ============================================
   18. Responsive — Small Mobile (≤ 480px)
   ============================================ */

@media (max-width: 480px) {
  .container {
    padding: 0 var(--sp-md);
  }

  .hero-title {
    font-size: clamp(1.75rem, 7vw, 2.5rem);
  }

  .hero-stats {
    flex-direction: column;
    gap: var(--sp-md);
  }

  .hero-stat {
    display: flex;
    align-items: center;
    gap: var(--sp-md);
  }

  .hero-stat-number {
    font-size: var(--fs-lg);
    min-width: 48px;
  }

  .about-image img {
    max-height: 240px;
  }

  .about-feature {
    padding: 10px 12px;
  }

  .about-feature-icon {
    width: 32px;
    height: 32px;
  }

  .service-card {
    padding: var(--sp-lg) var(--sp-md);
  }

  .cabinet-notice > div:first-child {
    width: 56px !important;
    height: 56px !important;
  }

  .cabinet-notice > div:first-child i {
    width: 28px !important;
    height: 28px !important;
  }

  .contact-form-wrapper {
    padding: var(--sp-md);
  }

  .footer-social-link {
    width: 36px;
    height: 36px;
  }
}

/* ============================================
   19. Print Styles
   ============================================ */

@media print {
  .navbar, .scroll-top, .theme-toggle, .hero-shapes,
  .nav-hamburger, .mobile-overlay { display: none !important; }

  body { background: #fff; color: #000; }

  .section { padding: 1rem 0; }

  .hero { min-height: auto; }

  a { color: #000; text-decoration: underline; }
}

/* ============================================
   20. Accessibility — Reduced Motion
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html { scroll-behavior: auto; }

  .reveal, .reveal-left, .reveal-right {
    opacity: 1;
    transform: none;
  }
}