:root{
  /* Theme palette (derived to match your logo) */
  --background: 45 85% 92%; /* warm cream */
  --foreground: 20 35% 16%; /* deep brown */
  --card: 48 90% 98%;
  --card-foreground: 20 35% 16%;
  --popover: 48 90% 99%;
  --popover-foreground: 20 35% 16%;

  /* Orange/red band */
  --primary: 8 78% 56%;
  --primary-foreground: 48 100% 97%;

  /* Green band */
  --secondary: 145 55% 38%;
  --secondary-foreground: 20 35% 12%;

  /* Blue/purple accent band */
  --accent: 215 85% 48%;
  --accent-foreground: 48 100% 97%;

  --border: 25 30% 78%;
  --input: 25 30% 82%;
  --ring: 145 55% 38%;
}

.dark{
  --background: 33 20% 10%;
  --foreground: 48 100% 97%;
  --card: 33 18% 13%;
  --card-foreground: 48 100% 97%;
  --popover: 33 18% 13%;
  --popover-foreground: 48 100% 97%;

  --primary: 8 78% 56%;
  --primary-foreground: 20 35% 12%;

  --secondary: 145 55% 44%;
  --secondary-foreground: 48 100% 97%;

  --accent: 215 85% 58%;
  --accent-foreground: 48 100% 97%;

  --border: 25 30% 30%;
  --input: 25 30% 30%;
  --ring: 8 78% 56%;
}

/* ---------- Overlay header (hides reference nav visually) ---------- */
:root { --topbar-h: 64px; }

body{
  padding-top: 0 !important;
  background-color: hsl(var(--background));
}

#topbar-overlay{
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--topbar-h);
  z-index: 100000;
  background: linear-gradient(90deg,
    hsla(var(--primary) / .92),
    hsla(var(--secondary) / .78),
    hsla(var(--accent) / .78)
  );
  border-bottom: 1px solid hsla(var(--border) / .9);
}

/* Hide the original app navbar/header so we only see our overlay. */
#root header,
#root [role="navigation"],
#root nav{
  display: none !important;
}

#topbar-overlay-inner{
  height: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

#topbar-overlay-logo{
  height: 44px;
  width: auto;
  filter: drop-shadow(0 6px 16px hsla(var(--primary) / .25));
}

#topbar-overlay-nav{
  display: flex;
  gap: 18px;
  align-items: center;
  font-family: Poppins, system-ui, sans-serif;
}

#topbar-overlay-nav a{
  color: hsl(var(--foreground));
  font-weight: 650;
  font-size: 14px;
  text-decoration: none;
  padding: 8px 10px;
  border-radius: 9999px;
  background: transparent;
}

#topbar-overlay-nav a:hover{
  background: hsla(var(--primary) / .14);
  box-shadow: 0 10px 22px hsla(var(--primary) / .10);
}

/* --- Hamburger button (hidden on desktop) --- */
#topbar-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  z-index: 100001;
}

#topbar-hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: hsl(var(--foreground));
  border-radius: 2px;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

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

#topbar-hamburger.open span:nth-child(2) {
  opacity: 0;
}

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

/* --- Mobile dropdown menu --- */
#topbar-mobile-menu {
  position: fixed;
  top: var(--topbar-h);
  left: 0;
  right: 0;
  z-index: 99999;
  background: linear-gradient(135deg,
    hsla(var(--primary) / .95),
    hsla(var(--secondary) / .90),
    hsla(var(--accent) / .90)
  );
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  padding: 12px 20px;
  gap: 4px;
  border-bottom: 1px solid hsla(var(--border) / .7);
  box-shadow: 0 8px 24px hsla(0 0% 0% / .15);
}

#topbar-mobile-menu[hidden] {
  display: none;
}

#topbar-mobile-menu a {
  color: hsl(var(--foreground));
  font-family: Poppins, system-ui, sans-serif;
  font-weight: 650;
  font-size: 15px;
  text-decoration: none;
  padding: 12px 16px;
  border-radius: 10px;
  transition: background 0.2s ease;
}

#topbar-mobile-menu a:hover,
#topbar-mobile-menu a:focus {
  background: hsla(var(--primary) / .18);
}

@media (max-width: 680px) {
  #topbar-overlay-nav { display: none; }
  #topbar-hamburger { display: flex; }
}

/* ========== Custom scrollbar matching theme ========== */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: hsl(var(--background));
}

::-webkit-scrollbar-thumb {
  border-radius: 9999px;
  background: linear-gradient(
    180deg,
    hsl(var(--primary)),
    hsl(var(--secondary)),
    hsl(var(--accent))
  );
  border: 2px solid hsl(var(--background));
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(
    180deg,
    hsl(var(--primary)),
    hsl(var(--secondary))
  );
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: hsl(var(--primary)) hsl(var(--background));
}

/* ========== Responsive layout improvements ========== */

/* Ensure images and media never overflow */
img, video, svg, canvas {
  max-width: 100%;
  height: auto;
}

/* Prevent horizontal overflow on the page */
html, body {
  overflow-x: hidden;
}

#root {
  overflow-x: hidden;
  padding-top: var(--topbar-h);
}

/* --- Large screens (≤1280px) --- */
@media (max-width: 1280px) {
  #topbar-overlay-inner {
    max-width: 960px;
  }
}

/* --- Tablets (≤1024px) --- */
@media (max-width: 1024px) {
  #topbar-overlay-inner {
    max-width: 100%;
    padding: 0 20px;
  }

  #topbar-overlay-nav a {
    font-size: 13px;
    padding: 6px 8px;
  }
}

/* --- Small tablets / large phones (≤768px) --- */
@media (max-width: 768px) {
  #topbar-overlay-nav {
    gap: 6px;
  }

  #topbar-overlay-nav a {
    font-size: 12px;
    padding: 5px 6px;
  }

  /* Switch to hamburger at this breakpoint too */
  #topbar-overlay-nav { display: none; }
  #topbar-hamburger { display: flex; }

  /* Tighten spacing on cards/containers inside the app */
  #root [class*="container"],
  #root [class*="max-w-"] {
    padding-left: 12px;
    padding-right: 12px;
  }

  /* Stack grid layouts on smaller screens */
  #root .grid {
    grid-template-columns: 1fr !important;
  }
}

/* --- Mobile (≤640px) --- */
@media (max-width: 640px) {
  :root { --topbar-h: 56px; }

  #topbar-overlay-logo {
    height: 36px;
  }

  #topbar-overlay-inner {
    padding: 0 12px;
  }

  /* Reduce font sizes for mobile readability */
  #root h1, #root [class*="text-4xl"], #root [class*="text-5xl"] {
    font-size: 1.75rem !important;
    line-height: 1.2 !important;
  }

  #root h2, #root [class*="text-3xl"] {
    font-size: 1.4rem !important;
    line-height: 1.25 !important;
  }

  #root h3, #root [class*="text-2xl"] {
    font-size: 1.15rem !important;
    line-height: 1.3 !important;
  }

  /* Reduce card padding on mobile */
  #root [class*="rounded-lg"],
  #root [class*="rounded-xl"] {
    padding-left: 12px;
    padding-right: 12px;
  }

  /* Full-width buttons on mobile */
  #root button,
  #root [role="button"] {
    max-width: 100%;
  }

  /* Reduce dialog/modal width on mobile */
  #root [role="dialog"] {
    max-width: calc(100vw - 24px) !important;
    margin: 12px;
  }
}

/* --- Very small phones (≤400px) --- */
@media (max-width: 400px) {
  :root { --topbar-h: 48px; }

  #topbar-overlay-logo {
    height: 30px;
  }

  #topbar-overlay-inner {
    padding: 0 8px;
  }

  #root h1, #root [class*="text-4xl"], #root [class*="text-5xl"] {
    font-size: 1.4rem !important;
  }

  #root h2, #root [class*="text-3xl"] {
    font-size: 1.15rem !important;
  }
}

/* ========== Touch-friendly improvements ========== */
@media (pointer: coarse) {
  #topbar-overlay-nav a {
    min-height: 44px;
    display: flex;
    align-items: center;
  }

  /* Ensure interactive elements have adequate tap targets */
  #root button,
  #root [role="button"],
  #root a {
    min-height: 44px;
  }
}