/* ============================================
   Dr. Sirisha Pramatha — Website Stylesheet
   ============================================ */

:root {
  --color-primary: #1c7a72;
  --color-primary-dark: #145a54;
  --color-primary-light: #e6f4f2;
  --color-accent: #d98e73;
  --color-accent-light: #fbeee7;
  --color-ink: #17242b;
  --color-ink-soft: #4b5c62;
  --color-bg: #ffffff;
  --color-bg-alt: #f7faf9;
  --color-border: #e3ebe9;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --radius-sm: 10px;
  --radius-md: 18px;
  --radius-lg: 28px;
  --shadow-sm: 0 2px 10px rgba(23, 36, 43, 0.06);
  --shadow-md: 0 12px 32px rgba(23, 36, 43, 0.10);
  --shadow-lg: 0 24px 60px rgba(23, 36, 43, 0.14);
  --container-width: 1180px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--color-ink);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 28px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  color: var(--color-ink);
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-sub {
  color: var(--color-ink-soft);
  font-size: 1.05rem;
  max-width: 620px;
}

/* Reveal-on-scroll */
[data-reveal] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.btn-primary {
  background: var(--color-primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  border-color: var(--color-border);
  color: var(--color-ink);
}
.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-ghost {
  background: transparent;
  color: var(--color-ink-soft);
  padding: 10px 16px;
}
.btn-ghost:hover { color: var(--color-primary); }
.btn-lg { padding: 15px 30px; font-size: 1rem; }
.btn-block { width: 100%; }

/* ===== Header ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}
.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  flex-shrink: 0;
}
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-text strong { font-size: 0.98rem; }
.brand-text small { color: var(--color-ink-soft); font-size: 0.76rem; }

.main-nav ul {
  display: flex;
  gap: 30px;
}
.main-nav a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-ink-soft);
  position: relative;
  padding: 6px 0;
  transition: var(--transition);
}
.main-nav a:hover,
.main-nav a.active { color: var(--color-primary); }
.main-nav a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  height: 2px;
  width: 0;
  background: var(--color-primary);
  transition: var(--transition);
}
.main-nav a:hover::after,
.main-nav a.active::after { width: 100%; }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-call { display: none; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 72px 0 120px;
  background: radial-gradient(circle at 85% 10%, var(--color-primary-light) 0%, transparent 55%),
              radial-gradient(circle at 10% 90%, var(--color-accent-light) 0%, transparent 45%),
              var(--color-bg-alt);
  overflow: hidden;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(2.1rem, 4vw, 3.1rem);
  margin-bottom: 20px;
}
.hero h1 span { color: var(--color-primary); }
.hero-sub {
  color: var(--color-ink-soft);
  font-size: 1.08rem;
  max-width: 540px;
  margin-bottom: 26px;
}
.hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 30px;
}
.tag {
  background: #fff;
  border: 1px solid var(--color-border);
  color: var(--color-primary-dark);
  padding: 7px 16px;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}
.hero-cta { display: flex; gap: 14px; margin-bottom: 44px; flex-wrap: wrap; }

.hero-stats {
  display: flex;
  gap: 40px;
  flex-wrap: wrap;
  padding-top: 30px;
  border-top: 1px solid var(--color-border);
}
.stat { display: flex; flex-direction: column; }
.stat strong {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: var(--color-primary-dark);
}
.stat span { font-size: 0.82rem; color: var(--color-ink-soft); }

.hero-media { position: relative; display: flex; justify-content: center; }
.hero-photo-frame {
  position: relative;
  width: 100%;
  max-width: 420px;
  aspect-ratio: 4 / 5;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: linear-gradient(150deg, var(--color-primary-light), #fff);
}
.hero-photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.hero-photo-fallback {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-size: 5rem;
  color: var(--color-primary);
  background: linear-gradient(150deg, var(--color-primary-light), #fff);
}
.hero-photo-frame.no-photo img { display: none; }
.hero-photo-frame.no-photo .hero-photo-fallback { display: flex; }

.hero-badge {
  position: absolute;
  left: -18px;
  bottom: 30px;
  background: #fff;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--color-primary);
}
.hero-badge div { display: flex; flex-direction: column; line-height: 1.2; }
.hero-badge strong { font-size: 0.9rem; color: var(--color-ink); }
.hero-badge span { font-size: 0.74rem; color: var(--color-ink-soft); }

.hero-wave {
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 60px;
  background: var(--color-bg);
  border-radius: 50% 50% 0 0 / 100% 100% 0 0;
  transform: scaleX(1.4);
}

/* ===== About ===== */
.about { padding: 110px 0; background: var(--color-bg); }
.about-grid {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 64px;
  align-items: center;
}
.about-media { position: relative; }
.about-photo-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 4;
  box-shadow: var(--shadow-md);
  background: linear-gradient(150deg, var(--color-accent-light), var(--color-primary-light));
  position: relative;
}
.about-photo-frame img { width: 100%; height: 100%; object-fit: cover; }
.about-photo-fallback {
  position: absolute; inset: 0;
  display: none; align-items: center; justify-content: center;
  font-family: var(--font-display); font-size: 4rem; color: var(--color-primary);
}
.about-photo-frame.no-photo img { display: none; }
.about-photo-frame.no-photo .about-photo-fallback { display: flex; }

.about-card {
  position: absolute;
  bottom: -22px;
  right: -22px;
  background: var(--color-primary);
  color: #fff;
  padding: 16px 22px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  line-height: 1.3;
}
.about-card strong { font-size: 0.95rem; }
.about-card span { font-size: 0.78rem; opacity: 0.85; }

.about-copy h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); margin-bottom: 18px; }
.about-copy p { color: var(--color-ink-soft); margin-bottom: 16px; }

.credential-list { margin: 26px 0 30px; display: flex; flex-direction: column; gap: 12px; }
.credential-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.95rem;
}
.credential-list svg { color: var(--color-primary); flex-shrink: 0; }

/* ===== Education & Experience ===== */
.experience { padding: 110px 0; background: var(--color-bg-alt); }
.timeline-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}
.timeline-heading {
  font-size: 1.2rem;
  margin-bottom: 26px;
  color: var(--color-primary-dark);
}
.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 26px;
  padding-left: 26px;
  border-left: 2px solid var(--color-border);
}
.timeline li {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.timeline li::before {
  content: '';
  position: absolute;
  left: -32px;
  top: 4px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid #fff;
  box-shadow: 0 0 0 2px var(--color-primary-light);
}
.timeline li.timeline-current::before {
  background: var(--color-accent);
  box-shadow: 0 0 0 2px var(--color-accent-light);
}
.timeline-year {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-primary);
}
.timeline-current .timeline-year { color: var(--color-accent); }
.timeline-content { display: flex; flex-direction: column; gap: 2px; }
.timeline-content strong { font-size: 0.98rem; }
.timeline-content span { font-size: 0.86rem; color: var(--color-ink-soft); }

/* ===== Specializations ===== */
.specializations { padding: 110px 0; background: var(--color-bg-alt); }
.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); margin-bottom: 14px; }
.section-head .section-sub { margin: 0 auto; }

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.service-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 34px 28px;
  transition: var(--transition);
}
.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-md);
  border-color: transparent;
}
.service-icon {
  width: 56px;
  height: 56px;
  border-radius: 16px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}
.service-card h3 { font-size: 1.15rem; margin-bottom: 10px; }
.service-card p { color: var(--color-ink-soft); font-size: 0.94rem; }

/* ===== Contact ===== */
.contact { padding: 110px 0; background: var(--color-bg); }
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 64px;
  align-items: stretch;
}
.contact-info h2 { font-size: clamp(1.8rem, 3vw, 2.4rem); margin-bottom: 16px; }
.contact-list { margin: 30px 0; display: flex; flex-direction: column; gap: 20px; }
.contact-list li { display: flex; align-items: flex-start; gap: 14px; }
.contact-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.contact-list strong { display: block; font-size: 0.95rem; }
.contact-list span { font-size: 0.88rem; color: var(--color-ink-soft); }
.contact-list a:hover { color: var(--color-primary); }

.contact-socials { display: flex; gap: 12px; }
.social-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-ink-soft);
  transition: var(--transition);
}
.social-icon:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.contact-map {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  min-height: 380px;
}
.contact-map iframe { display: block; width: 100%; height: 100%; min-height: 380px; }

/* ===== Footer ===== */
.site-footer {
  background: var(--color-ink);
  color: rgba(255,255,255,0.75);
  padding: 34px 0;
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  flex-wrap: wrap;
}
.footer-brand { display: flex; align-items: center; gap: 12px; }
.footer-brand strong { display: block; color: #fff; font-size: 0.92rem; }
.footer-brand span { font-size: 0.78rem; }
.footer-copy { font-size: 0.82rem; }
.back-to-top {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  transition: var(--transition);
}
.back-to-top:hover { background: var(--color-primary); border-color: var(--color-primary); }

/* ===== Responsive ===== */
@media (max-width: 992px) {
  .hero-inner,
  .about-grid,
  .contact-grid,
  .timeline-grid { grid-template-columns: 1fr; }
  .timeline-grid { gap: 44px; }
  .about-media { max-width: 380px; margin: 0 auto 40px; }
  .hero-media { order: -1; margin-bottom: 20px; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .header-call { display: inline-flex; }
  .contact-map, .contact-map iframe { min-height: 320px; }
}

@media (max-width: 768px) {
  .main-nav {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }
  .main-nav.open { max-height: 400px; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 10px 28px 20px; }
  .main-nav a { display: block; padding: 12px 0; border-bottom: 1px solid var(--color-border); }
  .nav-toggle { display: flex; }
  .header-actions .btn-primary { display: none; }
  .header-call { display: none; }
  .cards-grid { grid-template-columns: 1fr; }
  .hero { padding: 48px 0 90px; }
  .about,
  .experience,
  .specializations,
  .contact { padding: 70px 0; }
  .hero-badge { left: 10px; }
  .about-card { right: 10px; }
  .contact-map, .contact-map iframe { min-height: 280px; }
}

@media (max-width: 480px) {
  .hero-stats { gap: 24px; }
}