/* === CSS Variables === */
:root {
  --bg-light: #f0f8ff;
  --bg-dark: #1a1a1a;
  --nav-bg-light: #fff;
  --nav-bg-dark: #2b2b2b;
  --accent: #6fdcbf;
  --accent-dark: #7fffd4;
  --text-light: #333;
  --text-dark: #f1f1f1;
  --footer-bg-light: #f8f9fa;
  --footer-bg-dark: #2b2b2b;
  --footer-text-light: #6c757d;
  --footer-text-dark: #a0a0a0;
  --card-bg-light: #fff;
  --card-bg-dark: #23272e;
  --card-shadow: 0 4px 8px rgba(0,0,0,0.1);
  --card-shadow-dark: 0 4px 8px rgba(0,0,0,0.25);
}

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

body {
    font-family: 'Courier New', monospace;
    background-color: var(--bg-light);
    color: var(--text-light);
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

body.page-with-bg {
    background-image: url('/background-img/light-bg.png');
}

/* Navigation Styles */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--nav-bg-light);
    padding: 1rem 3rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

nav ul {
    list-style: none;
    display: flex;
    align-items: center;
}

nav ul li {
    position: relative;
    margin-left: 2rem;
}

nav a, nav a:visited {
    color: var(--text-light);
    font-weight: bold;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.3s ease;
    text-decoration: none;
}

nav a:hover, nav a:focus {
    color: var(--accent);
    border-bottom-color: var(--accent);
    text-decoration: none;
}

body.dark-mode nav a, body.dark-mode nav a:visited {
    color: var(--accent-dark);
}

body.dark-mode nav a:hover, body.dark-mode nav a:focus {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Submenu (Dropdown) */
nav ul ul {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background: var(--nav-bg-light);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
    padding: 0.5rem 0;
    flex-direction: column;
    width: 200px; /* Wider dropdown */
}

nav ul li:hover > ul {
    display: flex;
}

nav ul ul li {
    margin: 0;
}

nav ul ul a {
    padding: 0.5rem 1.5rem;
    width: 100%;
    display: block;
    border-bottom: none; /* No border for dropdown items */
}

nav ul ul a:hover {
    background-color: var(--bg-light);
    border-bottom: none;
}

/* Theme switcher slider */
.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #58a6ff;
}

input:checked + .slider:before {
    transform: translateX(26px);
}

/* Footer Styles */
footer {
    text-align: center;
    padding: 2rem 0;
    margin-top: 4rem;
    background-color: var(--footer-bg-light);
    color: var(--footer-text-light);
}

/* Dark Mode Styles */
body.dark-mode {
    background-color: var(--bg-dark);
    color: var(--text-dark);
}

body.page-with-bg.dark-mode {
    background-image: url('/background-img/dark-bg.png');
}

body.dark-mode nav {
    background: var(--nav-bg-dark);
    box-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

body.dark-mode nav a, body.dark-mode nav a:visited {
    color: var(--accent-dark);
}

body.dark-mode nav a:hover, body.dark-mode nav a:focus {
    color: var(--accent);
}

body.dark-mode nav ul a:hover {
    color: var(--accent-dark); /* Lighter pastel green for dark mode */
    border-bottom-color: var(--accent-dark);
}

body.dark-mode nav ul ul {
    background: var(--nav-bg-dark);
    box-shadow: 0 4px 8px rgba(0,0,0,0.5);
}

body.dark-mode nav ul ul a:hover {
    background-color: #3c3c3c;
}

body.dark-mode footer {
    background-color: var(--footer-bg-dark);
    color: var(--footer-text-dark);
}

/* Main Content */
main {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 2rem;
    text-align: center;
    flex-grow: 1;
}

main h1 {
    margin-bottom: 1rem;
}

main p {
    margin-bottom: 2rem;
    line-height: 1.6;
}

main img {
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Content container for non-landing pages */
main:not(.landing-page) {
    background: rgba(255, 255, 255, 0.9);
    padding: 2rem 3rem;
    border-radius: 8px;
}

body.dark-mode main:not(.landing-page) {
    background: rgba(43, 43, 43, 0.9);
}

/* Landing Page Specific Styles */
.hero {
    text-align: center;
    padding: 4rem 2rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero p {
    font-size: 1.2rem;
    color: #555;
}

body.dark-mode .hero p {
    color: #ccc;
}

.featured-content {
    padding: 2rem 0;
}

.featured-content h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

.card-container {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.card {
    background: rgba(255, 255, 255, 0.7);
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 2rem;
    width: 300px;
    text-align: left;
    text-decoration: none;
    color: var(--text-light);
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.card h3 {
    margin-bottom: 1rem;
    color: #007bff;
}

body.dark-mode .card {
    background: rgba(43, 43, 43, 0.8);
    border-color: #555;
    color: var(--text-dark);
}

body.dark-mode .card h3 {
    color: #58a6ff;
}

.card-container .card:nth-child(1) h3,
.card-container .card:nth-child(2) h3 {
    color: var(--accent);
}

body.dark-mode .card-container .card:nth-child(1) h3,
body.dark-mode .card-container .card:nth-child(2) h3 {
    color: var(--accent-dark);
}

/* About Page Specific Styles */
.about-page {
    max-width: 700px;
}

.about-page p {
    text-align: left;
    margin-bottom: 1.5rem;
}

.tech-hero-img {
    display: block;
    margin: 0 auto 2rem auto;
    max-width: 320px;
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.12);
    background: #fff;
    padding: 0.5rem;
}

.tech-list {
    text-align: left;
    margin: 2rem auto 0 auto;
    max-width: 600px;
    padding-left: 1.2em;
    font-size: 1.08rem;
    line-height: 1.7;
}

.tech-list li {
    margin-bottom: 1rem;
}

.tech-links-container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    max-width: 800px;
    margin: 2rem auto 2rem auto;
    padding: 2rem 3rem;
    box-sizing: border-box;
    text-align: center;
    width: 100%;
}

body.dark-mode .tech-links-container {
    background: rgba(43, 43, 43, 0.9);
}

.tech-links-list {
    list-style: none;
    padding: 0;
    margin: 2rem 0 0 0;
}

.tech-links-list li {
    margin-bottom: 1.2rem;
}

.tech-links-list a {
    color: #3fa7d6;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: bold;
    transition: color 0.2s;
}

.tech-links-list a:hover {
    color: var(--accent);
    text-decoration: underline;
}

body.dark-mode .tech-links-list a {
    color: #7fd7ff;
}

body.dark-mode .tech-links-list a:hover {
    color: var(--accent-dark);
}

#padding-spacer-1 {
    height: 10px;
}

/* Mini Challenge Box Styles */
.mini-challenge-container {
    display: flex;
    align-items: center;
    background: #f5f5f5;
    border-radius: 10px;
    padding: 16px;
    margin-top: 32px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

body.dark-mode .mini-challenge-container {
    background: #23272e;
    box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.mini-challenge-container img {
    width: 64px;
    height: 64px;
    margin-right: 20px;
}

.mini-challenge-container div {
    font-size: 1.1em;
    font-weight: 700;
    color: #222;
}

body.dark-mode .mini-challenge-container div {
    color: #f1f1f1;
}

.mini-challenge-container span {
    color: #2d6a4f;
    font-weight: 800;
}

body.dark-mode .mini-challenge-container span {
    color: #7fffd4;
}

/* Force light theme for mini-challenge-container on mini-challenges page */
body:not(.page-with-bg) .mini-challenge-container,
body:not(.page-with-bg) .mini-challenge-container div,
body:not(.page-with-bg) .mini-challenge-container span {
    background: #f5f5f5 !important;
    color: #222 !important;
}
body:not(.page-with-bg) .mini-challenge-container span {
    color: #2d6a4f !important;
}

body.page-with-bg .mini-challenge-container {
    background: #fff !important;
    color: #222 !important;
    border: 1.5px solid #e0e0e0 !important;
    box-shadow: 0 4px 24px rgba(0,0,0,0.10) !important;
}
body.page-with-bg .mini-challenge-container div {
    color: #222 !important;
}
body.page-with-bg .mini-challenge-container span {
    color: #2d6a4f !important;
}

.routine-list {
    background: #f8f8f8;
    border-radius: 8px;
    padding: 24px 20px 20px 32px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04);
    font-size: 1.08em;
    list-style: none;
    padding-left: 0;
}
.routine-list li {
    margin-bottom: 18px;
    line-height: 1.5;
}
.routine-list li:last-child {
    margin-bottom: 0;
}
.routine-list strong {
    color: #2a7a6c;
}
.routine-desc {
    color: #444;
    display: block;
    margin-top: 2px;
    font-size: 0.98em;
}

body.dark-mode .routine-list {
    background: #23272e;
    color: #e5e5e5;
}
body.dark-mode .routine-list strong {
    color: #7fffd4;
}
body.dark-mode .routine-desc {
    color: #b0bfc7;
}

.wellness-feature-container {
    background: rgba(255, 255, 255, 0.9);
    border-radius: 8px;
    max-width: 800px;
    margin: 2.5rem auto;
    padding: 2rem 3rem;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
body.dark-mode .wellness-feature-container {
    background: rgba(43, 43, 43, 0.9);
}

/* Breadcrumbs navigation styles */
.breadcrumbs {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 0 auto 0.5em auto;
  padding: 0.5em 1.5em;
  background: var(--footer-bg-light);
  border-radius: 12px 12px 0 0;
  box-shadow: 0 -2px 8px rgba(0,0,0,0.04);
  font-size: 1.05em;
  width: fit-content;
  min-width: 220px;
}
.breadcrumbs ol {
  display: flex;
  gap: 0.5em;
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumbs li {
  color: var(--footer-text-light);
}
.breadcrumbs li:not(:last-child)::after {
  content: "/";
  margin: 0 0.5em;
  color: #aaa;
}
.breadcrumbs a {
  color: var(--footer-link, #6fdcbf);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}
.breadcrumbs a:hover {
  text-decoration: underline;
  color: #4bb89a;
}
@media (prefers-color-scheme: dark) {
  .breadcrumbs {
    background: #23272f;
    color: #e0e0e0;
  }
  .breadcrumbs a {
    color: #6fdcbf;
  }
}
@media (prefers-color-scheme: light) {
  .breadcrumbs {
    background: #f7f7f7;
    color: #23272f;
  }
  .breadcrumbs a {
    color: #1a7f5a;
  }
}