/* ==========================================================================
   Yogiraj Spinal Hospital — Design tokens
   Palette grounded in the hospital's own world: temple stone at dusk,
   turmeric and kumkum used in Siddha/Ayurveda practice, sandalwood paste,
   and the deep teal of temple tanks in Kanyakumari.
   ========================================================================== */

:root {
  --indigo-950: #121D28;
  --indigo-900: #16232F;
  --indigo-800: #1E3346;
  --indigo-700: #2A4459;

  --gold-500: #D9A441;
  --gold-300: #E9C877;
  --gold-100: #F6E7C4;

  --vermilion-600: #B23A2E;
  --vermilion-500: #C74A3D;

  --teal-800: #0E4D48;
  --teal-600: #14675F;

  --cream-100: #FBF7EF;
  --cream-200: #F3E9D8;
  --cream-300: #E9DCC3;

  --ink-900: #1A1A1A;
  --ink-700: #3A342C;
  --ink-500: #6B6255;

  --font-display: "Cinzel", "Times New Roman", serif;
  --font-body: "Karla", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  --radius-sm: 4px;
  --radius-md: 10px;
  --radius-lg: 22px;

  --shadow-soft: 0 18px 50px -20px rgba(18, 29, 40, 0.45);
  --shadow-card: 0 12px 30px -14px rgba(18, 29, 40, 0.35);

  --container: 1180px;
  --transition: 260ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

/* ==========================================================================
   Reset & base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink-900);
  background: var(--cream-100);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.18;
  margin: 0 0 0.5em;
  color: var(--indigo-950);
  letter-spacing: 0.01em;
}

p {
  margin: 0 0 1em;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 1rem;
}

:focus-visible {
  outline: 3px solid var(--gold-500);
  outline-offset: 3px;
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold-500);
  margin-bottom: 14px;
}

.eyebrow::before {
  content: "";
  width: 26px;
  height: 2px;
  background: var(--gold-500);
  display: inline-block;
}

.section {
  padding: 96px 0;
}

.section--tight {
  padding: 64px 0;
}

.section--dark {
  background: var(--indigo-950);
  color: var(--cream-200);
}

.section--dark h2,
.section--dark h3 {
  color: var(--cream-100);
}

.section--teal {
  background: var(--teal-800);
  color: var(--cream-100);
}

.section--teal h2 {
  color: var(--cream-100);
}

.section-head {
  max-width: 680px;
  margin: 0 0 48px;
}

.section-head--center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-head h2 {
  font-size: clamp(1.7rem, 3vw, 2.5rem);
}

.lede {
  font-size: 1.08rem;
  color: var(--ink-700);
}

.section--dark .lede,
.section--teal .lede {
  color: var(--cream-200);
}

/* ==========================================================================
   Signature motif: the rudraksha-mala spine line
   A beaded vertical thread runs beside section headings on wide screens —
   at once a vertebral column and a strand of prayer beads.
   ========================================================================== */

.spine-marked {
  position: relative;
}

@media (min-width: 1000px) {
  .spine-marked {
    padding-left: 56px;
  }

  .spine-marked::before {
    content: "";
    position: absolute;
    left: 0;
    top: 6px;
    bottom: 6px;
    width: 16px;
    background-image: radial-gradient(circle, var(--gold-500) 3.4px, transparent 4px);
    background-size: 16px 26px;
    background-repeat: repeat-y;
    opacity: 0.55;
  }

  .spine-marked::after {
    content: "";
    position: absolute;
    left: 7px;
    top: 6px;
    bottom: 6px;
    width: 2px;
    background: linear-gradient(var(--gold-500), transparent 92%);
    opacity: 0.35;
  }

  .section--dark .spine-marked::before,
  .section--teal .spine-marked::before {
    opacity: 0.8;
  }
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 15px 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--gold-500);
  color: var(--indigo-950);
  box-shadow: 0 14px 30px -12px rgba(217, 164, 65, 0.65);
}

.btn-primary:hover {
  background: var(--gold-300);
}

.btn-outline {
  background: transparent;
  color: var(--cream-100);
  border-color: rgba(243, 233, 216, 0.45);
}

.btn-outline:hover {
  border-color: var(--gold-500);
  color: var(--gold-300);
}

.btn-outline-dark {
  background: transparent;
  color: var(--indigo-950);
  border-color: rgba(26, 26, 26, 0.25);
}

.btn-outline-dark:hover {
  border-color: var(--indigo-950);
}

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

/* ==========================================================================
   Top bar & Nav
   ========================================================================== */

.topbar {
  background: var(--indigo-950);
  color: var(--cream-300);
  font-size: 0.82rem;
}

.topbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 8px;
  padding-bottom: 8px;
  flex-wrap: wrap;
  gap: 6px;
}

.topbar-contacts {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.topbar-contacts a {
  color: var(--cream-300);
  transition: color var(--transition);
}

.topbar-contacts a:hover {
  color: var(--gold-300);
}

.topbar-note {
  color: var(--gold-300);
  letter-spacing: 0.04em;
  font-size: 0.78rem;
}

.navbar {
  background: var(--cream-100);
  border-bottom: 1px solid var(--cream-300);
  position: sticky;
  top: 0;
  z-index: 50;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

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

.brand-mark {
  width: 44px;
  height: 44px;
  flex-shrink: 0;
  object-fit: contain;
}

.heading-line {
  height: 3px;
  width: auto;
  max-width: 140px;
  margin: 6px 0 20px;
  opacity: 0.9;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand-text strong {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--indigo-950);
}

.brand-text span {
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-500);
}

.nav-links {
  display: flex;
  gap: 34px;
  align-items: center;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink-700);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -3px;
  width: 0;
  height: 2px;
  background: var(--gold-500);
  transition: width var(--transition);
}

.nav-links a:hover,
.nav-links a.is-active {
  color: var(--indigo-950);
}

.nav-links a:hover::after,
.nav-links a.is-active::after {
  width: 100%;
}

.nav-cta {
  display: flex;
  align-items: center;
  gap: 14px;
}

.nav-cta .btn {
  padding: 11px 22px;
  font-size: 0.8rem;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--indigo-950);
  margin: 5px 0;
  transition: transform var(--transition), opacity var(--transition);
}

@media (max-width: 900px) {
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream-100);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    border-bottom: 1px solid var(--cream-300);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition);
  }

  .nav-links.is-open {
    max-height: 420px;
  }

  .nav-links a {
    width: 100%;
    padding: 14px 24px;
  }

  .nav-links a::after {
    display: none;
  }

  .nav-cta .btn-outline-dark {
    display: none;
  }

  .nav-toggle {
    display: block;
  }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  background: radial-gradient(120% 140% at 82% 12%, var(--indigo-800) 0%, var(--indigo-950) 55%, var(--indigo-950) 100%);
  color: var(--cream-100);
  overflow: hidden;
}

.hero-grid {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding: 110px 0 90px;
}

.hero-spine {
  position: absolute;
  right: -60px;
  top: 50%;
  transform: translateY(-50%);
  height: 130%;
  opacity: 0.5;
  z-index: 1;
  pointer-events: none;
}

.hero-copy .eyebrow {
  color: var(--gold-300);
}

.hero-copy h1 {
  font-size: clamp(2.3rem, 4.6vw, 3.6rem);
  color: var(--cream-100);
  max-width: 14ch;
}

.hero-copy .lede {
  font-size: 1.15rem;
  max-width: 46ch;
  color: var(--cream-200);
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 32px;
}

.hero-stats {
  display: flex;
  gap: 34px;
  margin-top: 56px;
  flex-wrap: wrap;
}

.hero-stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  color: var(--gold-300);
}

.hero-stat span {
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--cream-300);
}

.hero-panel {
  position: relative;
  z-index: 2;
  background: rgba(251, 247, 239, 0.06);
  border: 1px solid rgba(243, 233, 216, 0.18);
  border-radius: var(--radius-lg);
  padding: 30px;
  backdrop-filter: blur(6px);
}

.hero-panel img {
  border-radius: var(--radius-md);
  width: 100%;
  height: 360px;
  object-fit: cover;
}

.hero-panel-caption {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 18px;
  font-size: 0.82rem;
  color: var(--cream-300);
}

.hero-panel-caption strong {
  color: var(--gold-300);
  font-family: var(--font-display);
  font-weight: 600;
}

@media (max-width: 980px) {
  .hero-grid {
    grid-template-columns: 1fr;
    padding: 70px 0 60px;
  }

  .hero-spine {
    opacity: 0.22;
    right: -140px;
  }
}

/* ==========================================================================
   Doctors
   ========================================================================== */

.doctor-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.doctor-card {
  background: var(--cream-100);
  border: 1px solid var(--cream-300);
  border-radius: var(--radius-lg);
  padding: 30px 26px;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.doctor-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card);
}

.doctor-photo {
  width: 108px;
  height: 108px;
  border-radius: 50%;
  margin: 0 auto 18px;
  border: 3px solid var(--gold-500);
  padding: 4px;
  object-fit: cover;
}

.doctor-card h3 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.doctor-quals {
  font-size: 0.78rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-500);
  margin-bottom: 14px;
}

.doctor-card a {
  font-weight: 700;
  color: var(--teal-800);
}

@media (max-width: 860px) {
  .doctor-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Services / treatments
   ========================================================================== */

.service-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.service-card {
  background: var(--indigo-900);
  color: var(--cream-100);
  border-radius: var(--radius-md);
  padding: 26px 20px;
  text-align: center;
  transition: transform var(--transition), background var(--transition);
  border: 1px solid rgba(243, 233, 216, 0.08);
}

.service-card:hover {
  transform: translateY(-4px);
  background: var(--indigo-800);
}

.service-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto 14px;
  color: var(--gold-500);
}

.service-card h3 {
  font-size: 0.95rem;
  color: var(--cream-100);
  margin: 0;
  letter-spacing: 0.01em;
}

@media (max-width: 980px) {
  .service-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 560px) {
  .service-grid {
    grid-template-columns: 1fr 1fr;
    gap: 14px;
  }
}

/* ==========================================================================
   Methodology steps (a genuine sequence — numbering earns its place)
   ========================================================================== */

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
  counter-reset: step;
}

.step {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-bottom: 1px solid rgba(243, 233, 216, 0.14);
}

.step:last-child {
  border-bottom: none;
}

.step-num {
  counter-increment: step;
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--gold-300);
}

.step-num::before {
  content: counter(step, decimal-leading-zero);
}

.step h3 {
  margin-bottom: 6px;
  font-size: 1.1rem;
  color: var(--cream-100);
}

.step p {
  color: var(--cream-200);
  margin: 0;
}

/* ==========================================================================
   Why choose us
   ========================================================================== */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}

.stat-callout {
  background: var(--cream-200);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.stat-callout strong {
  display: block;
  font-family: var(--font-display);
  font-size: 4rem;
  color: var(--vermilion-600);
  line-height: 1;
}

.stat-callout span {
  display: block;
  margin-top: 10px;
  font-size: 0.85rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--ink-700);
}

@media (max-width: 900px) {
  .split {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Appointment section
   ========================================================================== */

.appointment {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 50px;
  align-items: start;
}

.appointment-info h2 {
  color: var(--cream-100);
  font-size: clamp(1.7rem, 3vw, 2.3rem);
}

.appointment-phones {
  margin-top: 26px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.appointment-phones a {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--gold-300);
}

.appointment-card {
  background: var(--cream-100);
  border-radius: var(--radius-lg);
  padding: 34px;
  box-shadow: var(--shadow-soft);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field.full {
  grid-column: 1 / -1;
}

.form-field label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-700);
}

.form-field input,
.form-field select,
.form-field textarea {
  border: 1.5px solid var(--cream-300);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  background: var(--cream-100);
  color: var(--ink-900);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--gold-500);
  box-shadow: 0 0 0 4px rgba(217, 164, 65, 0.18);
}

.form-field textarea {
  resize: vertical;
  min-height: 90px;
}

.form-submit {
  margin-top: 22px;
}

.form-note {
  font-size: 0.78rem;
  color: var(--ink-500);
  margin-top: 12px;
}

.alert {
  padding: 14px 18px;
  border-radius: var(--radius-sm);
  margin-bottom: 20px;
  font-size: 0.92rem;
  font-weight: 600;
}

.alert-success {
  background: rgba(14, 77, 72, 0.1);
  color: var(--teal-800);
  border: 1px solid rgba(14, 77, 72, 0.25);
}

.alert-error {
  background: rgba(178, 58, 46, 0.1);
  color: var(--vermilion-600);
  border: 1px solid rgba(178, 58, 46, 0.25);
}

@media (max-width: 900px) {
  .appointment {
    grid-template-columns: 1fr;
  }

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

  .form-field.full {
    grid-column: auto;
  }
}

/* ==========================================================================
   Gallery
   ========================================================================== */

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4 / 3;
  background: var(--cream-300);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 420ms ease;
}

.gallery-item:hover img {
  transform: scale(1.06);
}

.gallery-caption {
  position: absolute;
  inset: auto 0 0 0;
  padding: 14px 16px;
  background: linear-gradient(to top, rgba(18, 29, 40, 0.85), transparent);
  color: var(--cream-100);
  font-size: 0.85rem;
  font-weight: 600;
  opacity: 0;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition);
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 860px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }
}

.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(18, 29, 40, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 40px;
}

.lightbox.is-open {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
}

.lightbox-close {
  position: absolute;
  top: 26px;
  right: 30px;
  background: none;
  border: none;
  color: var(--cream-100);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
}

/* ==========================================================================
   Address / locations
   ========================================================================== */

.location-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.location-card {
  background: var(--cream-100);
  border: 1px solid var(--cream-300);
  border-radius: var(--radius-md);
  padding: 26px;
}

.location-card h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--teal-800);
}

.location-card p {
  color: var(--ink-700);
  margin: 0;
}

@media (max-width: 700px) {
  .location-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--indigo-950);
  color: var(--cream-300);
  padding: 60px 0 26px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(243, 233, 216, 0.14);
}

.footer-brand .brand-text strong {
  color: var(--cream-100);
}

.footer-brand p {
  margin-top: 14px;
  max-width: 34ch;
  color: var(--cream-300);
  font-size: 0.92rem;
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.95rem;
  color: var(--gold-300);
  margin-bottom: 16px;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: var(--cream-300);
  font-size: 0.92rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--gold-300);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 22px;
  font-size: 0.8rem;
  color: var(--ink-500);
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 800px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
}

/* ==========================================================================
   Scroll reveal
   ========================================================================== */

.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 700ms ease, transform 700ms ease;
}

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

/* ==========================================================================
   Page hero (interior pages)
   ========================================================================== */

.page-hero {
  background: var(--indigo-950);
  color: var(--cream-100);
  padding: 70px 0 56px;
  text-align: center;
}

.page-hero h1 {
  color: var(--cream-100);
  font-size: clamp(2rem, 4vw, 2.8rem);
}

.page-hero p {
  color: var(--cream-300);
  max-width: 56ch;
  margin: 10px auto 0;
}

.breadcrumbs {
  font-size: 0.8rem;
  color: var(--cream-300);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.breadcrumbs a {
  color: var(--gold-300);
}

/* ==========================================================================
   Specialties list (treatments page)
   ========================================================================== */

.specialty-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px 40px;
}

.specialty-columns li {
  padding: 10px 0 10px 26px;
  position: relative;
  border-bottom: 1px dashed var(--cream-300);
  font-size: 0.95rem;
}

.specialty-columns li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 17px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gold-500);
}

@media (max-width: 700px) {
  .specialty-columns {
    grid-template-columns: 1fr;
  }
}