/*--------------------------------------------------------------
# Color Palette & Variables (ChemistryTutor.ca Theme)
--------------------------------------------------------------*/
:root {
  --default-font: "Roboto", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --heading-font: "Poppins", sans-serif;
  --nav-font: "Raleway", sans-serif;

  /* Color Palette */
  --background-color: #ffffff;
  --default-color: #444444;
  --heading-color: #2c4964;      /* Deep navy for headings */
  --accent-color: #087f8c;       /* Deep, readable teal */
  --accent-hover: #066671;       /* Darker teal hover state */
  --surface-color: #ffffff;
  --contrast-color: #ffffff;      /* White text for buttons/topbar */
  --light-bg: #f2f9f9;           /* Very light ice/teal tinted grey */
  --topbar-bg: #087f8c;          /* Deep teal topbar */
}

/*--------------------------------------------------------------
# General Styling & Typography
--------------------------------------------------------------*/
body {
  color: var(--default-color);
  background-color: var(--background-color);
  font-family: var(--default-font);
}

a {
  color: var(--accent-color);
  text-decoration: none;
  transition: 0.3s;
}

a:hover {
  color: var(--accent-hover);
  text-decoration: none;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--heading-color);
  font-family: var(--heading-font);
}

/*--------------------------------------------------------------
# Header & Top Bar
--------------------------------------------------------------*/
.header {
  background-color: var(--surface-color);
  transition: all 0.5s;
  z-index: 997;
}

.header .topbar {
  background-color: var(--accent-color);
  height: 40px;
  padding: 0;
  font-size: 14px;
  transition: all 0.5s;
  color: var(--contrast-color);
}

.header .topbar a {
  color: var(--contrast-color);
}

.header .topbar i {
  color: var(--contrast-color);
  margin-right: 6px;
}

.header .branding {
  background-color: var(--surface-color);
  min-height: 80px;
  padding: 15px 0;
  box-shadow: 0px 2px 15px rgba(0, 0, 0, 0.1);
}

.header .logo {
  line-height: 1;
}

.header .logo img {
  max-height: 40px;
  margin-right: 8px;
}

.header .logo span {
  font-size: 26px;
  font-weight: 700;
  font-family: var(--heading-font);
  color: var(--heading-color);
}

.header .cta-btn,
.header .cta-btn:focus {
  color: var(--contrast-color);
  background: var(--accent-color);
  font-size: 14px;
  padding: 8px 25px;
  margin-left: 20px;
  border-radius: 4px;
  transition: 0.3s;
  white-space: nowrap;
}

.header .cta-btn:hover {
  background: var(--accent-hover);
  color: var(--contrast-color);
}

/*--------------------------------------------------------------
# Desktop Navigation Menu
--------------------------------------------------------------*/
.navmenu {
  padding: 0;
}

.navmenu ul {
  margin: 0;
  padding: 0;
  display: flex;
  list-style: none;
  align-items: center;
}

.navmenu li {
  position: relative;
}

.navmenu a,
.navmenu a:focus {
  color: var(--heading-color);
  padding: 18px 15px;
  font-size: 15px;
  font-family: var(--nav-font);
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
  white-space: nowrap;
  transition: 0.3s;
}

.navmenu a i,
.navmenu a:focus i {
  font-size: 12px;
  line-height: 0;
  margin-left: 5px;
}

.navmenu li:hover > a,
.navmenu .active,
.navmenu .active:focus {
  color: var(--accent-color);
}

/* Dropdown styling */
.navmenu .dropdown ul {
  margin: 0;
  padding: 10px 0;
  background: var(--surface-color);
  display: block;
  position: absolute;
  visibility: hidden;
  left: 14px;
  top: 100%;
  opacity: 0;
  transition: 0.3s;
  border-radius: 4px;
  z-index: 99;
  box-shadow: 0px 0px 30px rgba(127, 137, 161, 0.25);
}

.navmenu .dropdown ul li {
  min-width: 200px;
}

.navmenu .dropdown ul a {
  padding: 10px 20px;
  font-size: 14px;
  font-weight: 500;
  text-transform: none;
  color: var(--heading-color);
}

.navmenu .dropdown ul a:hover,
.navmenu .dropdown ul .active:hover,
.navmenu .dropdown ul li:hover > a {
  color: var(--accent-color);
}

.navmenu .dropdown:hover > ul {
  opacity: 1;
  top: 100%;
  visibility: visible;
}

/*--------------------------------------------------------------
# Responsive Mobile Navigation Rules
--------------------------------------------------------------*/
@media (min-width: 1200px) {
  .mobile-nav-toggle {
    display: none !important;
  }
}

@media (max-width: 1199px) {
  .mobile-nav-toggle {
    color: var(--heading-color);
    font-size: 28px;
    cursor: pointer;
    line-height: 0;
    transition: 0.3s;
    margin-left: 15px;
    display: block !important;
  }

  .mobile-nav-toggle:hover {
    color: var(--accent-color);
  }

  /* Hide main desktop menu links on screens smaller than 1200px */
  .navmenu ul {
    display: none;
  }

  .header .cta-btn {
    font-size: 13px;
    padding: 6px 16px;
    margin-left: 10px;
  }
}

/* When Mobile Navigation is Active */
.mobile-nav-active {
  overflow: hidden;
}

.mobile-nav-active .navmenu {
  position: fixed;
  overflow-y: auto;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  background: rgba(255, 255, 255, 0.96);
  transition: 0.3s;
  z-index: 9999;
  padding: 60px 20px 20px 20px;
}

.mobile-nav-active .navmenu > ul {
  display: block;

}

.mobile-nav-active .mobile-nav-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  z-index: 99999;
}

/*--------------------------------------------------------------
# Page Title & Breadcrumbs
--------------------------------------------------------------*/
.page-title {
  color: var(--heading-color);
  background-color: var(--light-bg);
  position: relative;
}

.page-title .heading {
  padding: 60px 0 40px 0;
}

.page-title .heading h1 {
  font-size: 36px;
  font-weight: 700;
  color: var(--heading-color);
}

.page-title .breadcrumbs {
  background-color: var(--surface-color);
  padding: 15px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.page-title .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
}

.page-title .breadcrumbs ol li + li {
  padding-left: 10px;
}

.page-title .breadcrumbs ol li + li::before {
  content: "/";
  display: inline-block;
  padding-right: 10px;
  color: rgba(0, 0, 0, 0.3);
}

/*--------------------------------------------------------------
# Sections
--------------------------------------------------------------*/
section,
.section {
  color: var(--default-color);
  background-color: var(--background-color);
  padding: 60px 0;
  scroll-margin-top: 100px;
  overflow: clip;
}

/*--------------------------------------------------------------
# Footer
--------------------------------------------------------------*/
.footer {
  color: var(--default-color);
  background-color: var(--light-bg);
  font-size: 14px;
  padding-top: 50px;
  border-top: 1px solid rgba(0, 0, 0, 0.05);
}

.footer .footer-about .sitename {
  font-size: 24px;
  font-weight: 700;
  font-family: var(--heading-font);
  color: var(--heading-color);
}

.footer h4 {
  font-size: 16px;
  font-weight: 700;
  color: var(--heading-color);
  position: relative;
  padding-bottom: 12px;
  margin-bottom: 15px;
}

.footer h4::after {
  content: "";
  position: absolute;
  display: block;
  width: 30px;
  height: 2px;
  background: var(--accent-color);
  bottom: 0;
  left: 0;
}

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

.footer .footer-links ul li {
  padding: 8px 0;
  display: flex;
  align-items: center;
}

.footer .footer-links ul a {
  color: var(--default-color);
  transition: 0.3s;
}

.footer .footer-links ul a:hover {
  color: var(--accent-color);
  padding-left: 5px;
}

.footer .copyright {
  padding: 25px 0;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
}

/*--------------------------------------------------------------
# Scroll to Top Button
--------------------------------------------------------------*/
.scroll-top {
  position: fixed;
  visibility: hidden;
  opacity: 0;
  right: 15px;
  bottom: 15px;
  z-index: 99999;
  background-color: var(--accent-color);
  width: 40px;
  height: 40px;
  border-radius: 4px;
  transition: all 0.4s;
}

.scroll-top i {
  font-size: 24px;
  color: var(--contrast-color);
  line-height: 0;
}

.scroll-top:hover {
  background-color: var(--accent-hover);
}

.scroll-top.active {
  visibility: visible;
  opacity: 1;
}

/*--------------------------------------------------------------
# Custom Brand Teal Utility Classes
--------------------------------------------------------------*/
.custom-teal-text { 
  color: var(--accent-color) !important; 
}

.custom-teal-bg { 
  background-color: var(--accent-color) !important; 
}

.custom-teal-border { 
  border-color: var(--accent-color) !important; 
}

.btn-teal {
  color: var(--contrast-color);
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

.btn-teal:hover {
  color: var(--contrast-color);
  background-color: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-outline-teal {
  color: var(--accent-color);
  border-color: var(--accent-color);
  background-color: transparent;
}

.btn-outline-teal:hover {
  color: var(--contrast-color);
  background-color: var(--accent-color);
  border-color: var(--accent-color);
}

/*--------------------------------------------------------------
# Bootstrap Color Overrides (Force Deep Teal Brand Colors)
--------------------------------------------------------------*/
.btn-primary, 
.bg-primary {
  background-color: var(--accent-color) !important;
  border-color: var(--accent-color) !important;
  color: var(--contrast-color) !important;
}

.btn-primary:hover, 
.btn-primary:focus {
  background-color: var(--accent-hover) !important;
  border-color: var(--accent-hover) !important;
}

.btn-outline-primary {
  color: var(--accent-color) !important;
  border-color: var(--accent-color) !important;
  background-color: transparent !important;
}

.btn-outline-primary:hover {
  color: var(--contrast-color) !important;
  background-color: var(--accent-color) !important;
  border-color: var(--accent-color) !important;
}

.text-primary {
  color: var(--accent-color) !important;
}

.border-primary {
  border-color: var(--accent-color) !important;
}

/*--------------------------------------------------------------
# Chemistry Joke Banner Styling
--------------------------------------------------------------*/
.joke-card {
  border-left: 4px solid var(--accent-color);
  background-color: var(--surface-color);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.joke-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.08) !important;
}

.joke-icon {
  color: var(--accent-color);
  font-size: 1.5rem;
}

/* --- Mobile Header Fixes --- */
@media (max-width: 991.98px) {
  /* Ensure branding container spreads elements cleanly */
  .header .branding .container {
    justify-content: space-between !important;
    padding-left: 15px;
    padding-right: 15px;
  }

  /* Make logo text and image fit small screens without clipping */
  .header .logo {
    font-size: 1.1rem !important;
    max-width: 65%;
  }

  .header .logo img {
    max-height: 28px !important;
  }

  /* Hide the topbar button or CTA on mobile screens to prevent overflow */
  .header .branding .cta-btn {
    display: none !important;
  }

  /* Ensure topbar fits neatly on narrow phones */
  .header .topbar {
    font-size: 0.8rem;
    padding: 6px 0;
  }
}

/* Extra small screens (phones < 380px wide) */
@media (max-width: 375px) {
  .header .logo span {
    font-size: 1rem !important;
  }
}