/* ==========================================================================
   Header & Mobile Right-Side Off-Canvas Drawer Navigation
   Dr. P. R. Krishnan - Medineuro Speciality Clinic
   ========================================================================== */

:root {
  --hdr-navy: #142e42;
  --hdr-teal: #096577;
  --hdr-teal-dark: #084b59;
  --hdr-teal-light: #eff7fa;
  --hdr-line: #e5edf1;
  --hdr-border: #dce6eb;
  --hdr-shadow: 0 4px 20px rgba(20, 46, 66, 0.06);
}

/* --------------------------------------------------------------------------
   Top Bar
   -------------------------------------------------------------------------- */
.topline {
  background: #0f2434;
  color: #c7d8e2;
  font-size: 11.5px;
  line-height: 1.4;
  padding: 7px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topline .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

/* --------------------------------------------------------------------------
   Main Header Bar
   -------------------------------------------------------------------------- */
header {
  position: sticky;
  top: 0;
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid var(--hdr-line);
  box-shadow: 0 2px 14px rgba(15, 36, 52, 0.04);
  transition: background-color 0.25s ease, box-shadow 0.25s ease;
}

.navrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  min-height: 82px;
}

/* Brand / Logo */
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
  text-decoration: none;
}

.logo-brand {
  gap: 0;
}

.navrow .logo-img,
.logo-img {
  height: 104px;
  max-height: 115px;
  width: auto;
  max-width: 340px;
  display: block;
  object-fit: contain;
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.logo-img:hover {
  opacity: 0.9;
}

/* Desktop Navigation */
nav#navigation,
nav {
  display: flex;
  align-items: center;
  gap: 22px;
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: 0.4px;
}

nav .nav-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

nav a {
  color: var(--hdr-navy);
  text-decoration: none;
  padding: 30px 0;
  position: relative;
  transition: color 0.2s ease;
  white-space: nowrap;
  text-transform: uppercase;
}

nav a:hover,
nav a.active {
  color: var(--hdr-teal);
}

nav a.active::after {
  position: absolute;
  content: '';
  bottom: 20px;
  width: 100%;
  height: 2.5px;
  background: var(--hdr-teal);
  border-radius: 2px;
  left: 0;
}

/* Arrow inside nav link hidden on desktop */
nav a .drawer-arrow {
  display: none;
}

/* Desktop CTA */
.navcta {
  padding: 10px 18px;
  font-size: 13.5px;
  font-weight: 600;
  border-radius: 7px;
  background: var(--hdr-teal);
  color: #ffffff !important;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(9, 101, 119, 0.2);
  transition: background 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.navcta:hover {
  background: var(--hdr-teal-dark);
  transform: translateY(-1.5px);
  box-shadow: 0 6px 16px rgba(9, 101, 119, 0.3);
}

/* Drawer-specific components hidden on desktop */
.nav-drawer-header,
.nav-drawer-footer,
.nav-backdrop {
  display: none;
}

/* Hamburger toggle hidden on desktop */
.menu {
  display: none;
}

/* --------------------------------------------------------------------------
   Mobile & Tablet Responsive (<= 992px)
   -------------------------------------------------------------------------- */
@media (max-width: 992px) {
  header {
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
    background: #ffffff !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 1000 !important;
  }

  .topline {
    font-size: 10.5px;
    padding: 6px 0;
  }

  .topline .wrap {
    flex-direction: column;
    gap: 3px;
    text-align: center;
    padding-left: 20px;
    padding-right: 20px;
    box-sizing: border-box;
  }

  header .wrap.navrow,
  .navrow {
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    width: 100% !important;
    max-width: 100% !important;
    box-sizing: border-box !important;
    min-height: 66px !important;
    gap: 12px !important;
    padding-left: 20px !important;
    padding-right: 20px !important; /* Proper balanced right margin matching left margin */
    margin-left: auto !important;
    margin-right: auto !important;
  }

  .navrow .logo-img,
  .logo-img {
    height: 76px !important;
    max-height: 82px !important;
    max-width: 260px !important;
  }

  /* Hide desktop header CTA to avoid header crowding */
  .navrow > .navcta {
    display: none !important;
  }

  /* Hamburger Menu Button - Properly aligned with container right margin */
  .menu {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 44px !important;
    height: 44px !important;
    padding: 0 !important;
    margin-left: auto !important;
    margin-right: 0 !important; /* Flushes cleanly with the 20px right margin */
    position: relative !important;
    z-index: 1005 !important;
    background: #ffffff !important;
    border: 1.5px solid var(--hdr-border) !important;
    border-radius: 10px !important;
    color: var(--hdr-navy) !important;
    cursor: pointer !important;
    box-shadow: 0 2px 8px rgba(15, 36, 52, 0.08) !important;
    transition: all 0.2s ease !important;
    -webkit-tap-highlight-color: transparent !important;
    flex-shrink: 0 !important;
  }

  .menu:hover,
  .menu:focus-visible {
    background: var(--hdr-teal-light);
    border-color: var(--hdr-teal);
    color: var(--hdr-teal);
    outline: none;
  }

  /* Animated 3-line hamburger icon */
  .menu-icon {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    width: 20px;
    height: 14px;
    pointer-events: none;
    position: relative;
  }

  .menu-icon span {
    display: block;
    width: 100%;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform 0.25s ease, opacity 0.25s ease;
    transform-origin: center;
  }

  /* Morphing hamburger to X on open */
  body.nav-open .menu-icon span:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
  }

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

  body.nav-open .menu-icon span:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
  }

  /* Body scroll lock when menu is active */
  body.nav-open,
  html.nav-open {
    overflow: hidden !important;
    touch-action: none;
  }

  /* ------------------------------------------------------------------------
     Backdrop Overlay
     ------------------------------------------------------------------------ */
  .nav-backdrop {
    display: block !important;
    position: fixed !important;
    inset: 0 !important;
    top: 0 !important;
    left: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    width: 100vw !important;
    height: 100vh !important;
    height: 100dvh !important;
    background: rgba(10, 26, 38, 0.58) !important;
    backdrop-filter: blur(4px) !important;
    -webkit-backdrop-filter: blur(4px) !important;
    z-index: 99990 !important;
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease !important;
  }

  .nav-backdrop.active,
  body.nav-open .nav-backdrop {
    opacity: 1 !important;
    visibility: visible !important;
    pointer-events: auto !important;
  }

  /* ------------------------------------------------------------------------
     Off-Canvas Drawer - Opens from RIGHT SIDE
     ------------------------------------------------------------------------ */
  nav#navigation,
  nav {
    position: fixed !important;
    top: 0 !important;
    right: 0 !important;
    bottom: 0 !important;
    left: auto !important;
    width: min(320px, 86vw) !important;
    height: 100vh !important;
    height: 100dvh !important;
    z-index: 99999 !important;
    background: #ffffff !important;
    box-shadow: -10px 0 40px rgba(10, 26, 38, 0.22) !important;
    border-left: 1px solid var(--hdr-line) !important;
    display: flex !important;
    flex-direction: column !important;
    align-items: stretch !important;
    justify-content: flex-start !important;
    gap: 0 !important;
    padding: 0 !important;
    margin: 0 !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    -webkit-overflow-scrolling: touch;
    transform: translateX(105%) !important;
    visibility: hidden !important;
    pointer-events: none !important;
    transition: transform 0.32s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.32s ease !important;
  }

  nav#navigation.open,
  nav.open,
  body.nav-open nav#navigation,
  body.nav-open nav {
    transform: translateX(0) !important;
    visibility: visible !important;
    pointer-events: auto !important;
  }

  /* Drawer Header */
  .nav-drawer-header {
    width: 100% !important;
    box-sizing: border-box !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 16px 20px !important;
    background: #f8fafc !important;
    border-bottom: 1px solid var(--hdr-line) !important;
    position: sticky !important;
    top: 0 !important;
    z-index: 10 !important;
  }

  .nav-drawer-brand {
    display: inline-flex !important;
    align-items: center !important;
    text-decoration: none !important;
    max-width: calc(100% - 50px) !important;
  }

  .nav-drawer-header img,
  .nav-drawer-logo,
  .nav-drawer-brand .logo-img {
    height: 62px !important;
    max-height: 68px !important;
    width: auto !important;
    max-width: 225px !important;
    display: block !important;
    object-fit: contain !important;
  }

  .nav-drawer-title {
    font-family: 'Manrope', Arial, sans-serif;
    font-size: 16px;
    font-weight: 750;
    color: var(--hdr-navy);
    line-height: 1.2;
    letter-spacing: -0.3px;
  }

  .nav-drawer-subtitle {
    font-size: 11px;
    font-weight: 600;
    color: var(--hdr-teal);
    letter-spacing: 0.6px;
    text-transform: uppercase;
  }

  .nav-close-btn {
    display: grid !important;
    place-items: center;
    width: 38px;
    height: 38px;
    padding: 0;
    background: #ffffff;
    border: 1px solid var(--hdr-border);
    border-radius: 8px;
    color: var(--hdr-navy);
    font-size: 18px;
    line-height: 1;
    cursor: pointer;
    box-shadow: 0 1px 4px rgba(15, 36, 52, 0.05);
    transition: all 0.2s ease;
    -webkit-tap-highlight-color: transparent;
  }

  .nav-close-btn:hover,
  .nav-close-btn:focus-visible {
    background: var(--hdr-teal-light);
    color: var(--hdr-teal);
    border-color: var(--hdr-teal);
    transform: scale(1.04);
  }

  /* Drawer Navigation Links */
  nav .nav-links {
    width: 100% !important;
    box-sizing: border-box !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 6px !important;
    padding: 16px 14px !important;
    flex: 1 0 auto !important;
  }

  nav a {
    width: 100% !important;
    box-sizing: border-box !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    padding: 14px 18px !important;
    border-radius: 9px !important;
    border-bottom: none !important;
    color: var(--hdr-navy) !important;
    font-size: 14.5px !important;
    font-weight: 700 !important;
    letter-spacing: 0.6px !important;
    text-transform: uppercase !important;
    text-decoration: none !important;
    background: #f8fbfa !important;
    border: 1px solid #e7f0f3 !important;
    transition: all 0.2s ease !important;
    -webkit-tap-highlight-color: transparent !important;
  }

  nav a::after {
    display: none !important;
  }

  nav a .drawer-arrow {
    display: inline-flex !important;
    align-items: center !important;
    justify-content: center !important;
    font-size: 18px !important;
    color: #9ab1bd !important;
    transition: transform 0.2s ease, color 0.2s ease !important;
    line-height: 1 !important;
  }

  nav a:hover {
    background: var(--hdr-teal-light) !important;
    border-color: #bee2ea !important;
    color: var(--hdr-teal) !important;
    padding-left: 20px !important;
  }

  nav a:hover .drawer-arrow {
    color: var(--hdr-teal) !important;
    transform: translateX(3px) !important;
  }

  nav a.active {
    background: #e8f5f8 !important;
    border-color: #a0d4e0 !important;
    color: var(--hdr-teal-dark) !important;
    font-weight: 750 !important;
    border-left: 5px solid var(--hdr-teal) !important;
  }

  nav a.active .drawer-arrow {
    color: var(--hdr-teal) !important;
  }

  /* Drawer Footer */
  .nav-drawer-footer {
    width: 100% !important;
    box-sizing: border-box !important;
    display: flex !important;
    flex-direction: column !important;
    gap: 14px !important;
    padding: 16px 18px 22px !important;
    background: #fbfdfe !important;
    border-top: 1px solid var(--hdr-line) !important;
    margin-top: auto !important;
  }

  .nav-drawer-footer .drawer-cta {
    width: 100% !important;
    box-sizing: border-box !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    gap: 8px !important;
    padding: 13px 18px !important;
    background: var(--hdr-teal) !important;
    color: #ffffff !important;
    font-size: 14.5px !important;
    font-weight: 650 !important;
    text-decoration: none !important;
    border-radius: 9px !important;
    border: none !important;
    text-transform: none !important;
    letter-spacing: normal !important;
    box-shadow: 0 4px 12px rgba(9, 101, 119, 0.24) !important;
    transition: background 0.2s ease, transform 0.2s ease !important;
  }

  .nav-drawer-footer .drawer-cta:hover {
    background: var(--hdr-teal-dark) !important;
    transform: translateY(-1.5px) !important;
  }

  .drawer-contact-info {
    display: flex;
    flex-direction: column;
    gap: 7px;
    font-size: 12px;
    color: #5c7180;
    background: #ffffff;
    padding: 11px 13px;
    border: 1px solid var(--hdr-border);
    border-radius: 8px;
  }

  .drawer-info-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    line-height: 1.35;
  }


  .drawer-info-item .drawer-icon {
    font-size: 14px;
    flex-shrink: 0;
  }

  .drawer-info-item > div {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .drawer-clinic-name {
    font-size: 12px;
    font-weight: 600;
    color: #1a3a4a;
    line-height: 1.3;
  }

  .drawer-clinic-time {
    font-size: 11px;
    color: var(--hdr-teal, #1a7fa8);
    font-weight: 500;
    line-height: 1.2;
  }


  /* Clinic Schedule in Drawer Footer */
  .drawer-schedule-label {
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.9px;
    text-transform: uppercase;
    color: var(--hdr-teal);
    margin-bottom: 2px;
  }

  .drawer-schedule-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
  }

  .drawer-schedule-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: #ffffff;
    border: 1px solid var(--hdr-border);
    border-radius: 9px;
    padding: 10px 13px;
  }

  .drawer-schedule-icon {
    font-size: 18px;
    flex-shrink: 0;
    margin-top: 1px;
  }

  .drawer-schedule-detail {
    display: flex;
    flex-direction: column;
    gap: 2px;
  }

  .drawer-schedule-clinic {
    font-size: 12.5px;
    font-weight: 700;
    color: var(--hdr-navy);
    line-height: 1.3;
  }

  .drawer-schedule-time {
    font-size: 12px;
    font-weight: 600;
    color: var(--hdr-teal);
    letter-spacing: 0.2px;
  }
}

/* --------------------------------------------------------------------------
   Small Phone Optimization (<= 480px)
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  header .wrap.navrow,
  .navrow {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .topline .wrap {
    padding-left: 16px !important;
    padding-right: 16px !important;
  }

  .logo-img {
    height: 60px;
    max-height: 64px;
    max-width: 210px;
  }

  nav#navigation,
  nav {
    width: min(305px, 88vw) !important;
  }
}