/* Base Styles */
:root {
  --primary: #1a9fda;
  --primary-hover: #0d8bc3;
  --secondary: #24c6dc;
  --background: #f8fcff;
  --text: #111;
  --text-light: #111;
  --border: #e0e0e0;
  --success: #28a745;
  --warning: #ffc107;
  --danger: #dc3545;
  --card-bg: #fff;
  --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.15);
  --transition-speed: 0.3s;
  --border-radius: 0.5rem;
}

/* Global styles for better consistency */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  color: var(--text);
  background-color: var(--background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  width: 100%;
}

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

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 clamp(1rem, 3vw, 2rem);
}

/* Navigation */
nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
  position: sticky;
  top: 0;
  background-color: var(--background);
  z-index: 100;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
}

nav ul {
  list-style: none;
  display: flex;
  margin: 0;
  padding: 0;
  gap: clamp(0.75rem, 3vw, 1.5rem);
}

nav a {
  text-decoration: none;
  color: var(--text);
  padding: 0.5rem 0.25rem;
  position: relative;
  transition: color var(--transition-speed) ease;
}

nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-speed) ease;
}

nav a:hover {
  color: var(--primary);
}

nav a:hover::after {
  width: 100%;
}

nav a.active {
  font-weight: 500;
  color: var(--primary);
}

nav a.active::after {
  width: 100%;
}

.site-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--primary);
  transition: transform var(--transition-speed) ease;
}

.site-title:hover {
  transform: scale(1.05);
}

/* Animated Hamburger Menu for Mobile */
.menu-toggle {
  display: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 101;
}

.menu-toggle span {
  display: block;
  position: absolute;
  height: 3px;
  width: 100%;
  background: var(--primary);
  border-radius: 3px;
  opacity: 1;
  left: 0;
  transform: rotate(0deg);
  transition: .25s ease-in-out;
}

.menu-toggle span:nth-child(1) {
  top: 0px;
}

.menu-toggle span:nth-child(2), .menu-toggle span:nth-child(3) {
  top: 9px;
}

.menu-toggle span:nth-child(4) {
  top: 18px;
}

.menu-toggle.open span:nth-child(1) {
  top: 9px;
  width: 0%;
  left: 50%;
}

.menu-toggle.open span:nth-child(2) {
  transform: rotate(45deg);
}

.menu-toggle.open span:nth-child(3) {
  transform: rotate(-45deg);
}

.menu-toggle.open span:nth-child(4) {
  top: 9px;
  width: 0%;
  left: 50%;
}

/* Hero Section */
.hero {
  text-align: center;
  padding: clamp(2rem, 5vw, 4rem) 0;
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  color: white;
  margin-bottom: 2rem;
  border-radius: var(--border-radius);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.hero::before {
  content: '';
  position: absolute;
  top: -50px;
  left: -50px;
  right: -50px;
  bottom: -50px;
  background: linear-gradient(45deg, rgba(255,255,255,0) 0%, rgba(255,255,255,0.1) 100%);
  transform: rotate(45deg);
  animation: shine 5s infinite linear;
}

@keyframes shine {
  0% {
    transform: translateX(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) rotate(45deg);
  }
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  margin-bottom: 0.5rem;
  animation: fadeInUp 0.8s ease-out;
}

.hero .subtitle {
  font-size: clamp(1rem, 3vw, 1.5rem);
  opacity: 0.9;
  animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Category Cards */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
  margin: 2rem 0;
}

.category-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  text-decoration: none;
  color: var(--text);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  text-align: center;
  position: relative;
  overflow: hidden;
  isolation: isolate;
}

.category-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(120deg, rgba(26,159,218,0.05) 0%, rgba(36,198,220,0.05) 100%);
  transform: translateY(100%);
  transition: transform var(--transition-speed);
  z-index: -1;
}

.category-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.category-card:hover::before {
  transform: translateY(0);
}

.category-card h2 {
  color: var(--primary);
  margin-bottom: 0.5rem;
  position: relative;
  transition: transform var(--transition-speed);
}

.category-card:hover h2 {
  transform: scale(1.05);
}

/* Species Cards */
.species-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 250px), 1fr));
  gap: clamp(1rem, 3vw, 1.5rem);
  margin: 2rem 0;
}

.species-card {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
  height: 100%;
  position: relative;
}

.species-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.card-inner {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
  color: var(--text);
}

.card-image {
  height: 180px;
  overflow: hidden;
  position: relative;
}

.card-image::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.1) 100%);
  opacity: 0;
  transition: opacity var(--transition-speed);
}

.species-card:hover .card-image::after {
  opacity: 1;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-speed);
}

.species-card:hover .card-image img {
  transform: scale(1.1);
}

.card-content {
  padding: clamp(0.75rem, 2vw, 1.5rem);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.card-content h3 {
  margin: 0 0 0.5rem 0;
  color: var(--primary);
  transition: color var(--transition-speed);
}

.species-card:hover .card-content h3 {
  color: var(--primary-hover);
}

.scientific-name {
  margin: 0 0 1rem 0;
  color: var(--text-light);
  font-size: 0.9rem;
  font-style: italic;
}

/* Tags */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: auto;
}

.tag {
  background-color: rgba(26, 159, 218, 0.1);
  color: var(--primary);
  padding: 0.25rem 0.5rem;
  border-radius: 0.25rem;
  font-size: 0.8rem;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.tag:hover {
  background-color: rgba(26, 159, 218, 0.2);
  transform: scale(1.05);
}

/* Species Profile Page */
.species-profile {
  background-color: var(--card-bg);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: clamp(1rem, 4vw, 2rem);
  margin: 2rem 0;
  animation: fadeIn 0.5s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.species-profile header {
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.species-profile h1 {
  margin: 0 0 0.5rem 0;
  color: var(--primary);
  animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.species-profile .scientific-name {
  font-size: 1.2rem;
  margin: 0 0 1rem 0;
  animation: slideInLeft 0.5s ease-out 0.1s both;
}

.gallery {
  margin-bottom: 2rem;
  animation: fadeIn 0.5s ease-out 0.2s both;
}

.main-image {
  width: 100%;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  max-height: 400px;
  object-fit: cover;
  box-shadow: var(--shadow);
  transition: transform var(--transition-speed);
}

.main-image:hover {
  transform: scale(1.02);
}

.thumbnails {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.5rem;
  scrollbar-width: thin;
  scrollbar-color: var(--primary) var(--border);
}

/* Scrollbar styling */
.thumbnails::-webkit-scrollbar {
  height: 6px;
}

.thumbnails::-webkit-scrollbar-track {
  background: var(--border);
  border-radius: 3px;
}

.thumbnails::-webkit-scrollbar-thumb {
  background-color: var(--primary);
  border-radius: 3px;
}

.thumbnail {
  width: 80px;
  height: 80px;
  object-fit: cover;
  border-radius: 0.25rem;
  cursor: pointer;
  transition: transform var(--transition-speed);
  box-shadow: var(--shadow);
  flex-shrink: 0;
}

.thumbnail:hover {
  transform: scale(1.1);
}

.species-content {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  animation: slideInUp 0.5s ease-out 0.3s both;
}

@keyframes slideInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.species-content section {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1.5rem;
  transition: transform var(--transition-speed);
}

.species-content section:hover {
  transform: translateY(-3px);
}

.species-content section:last-child {
  border-bottom: none;
}

.species-content h2 {
  color: var(--primary);
  margin-bottom: 1rem;
  font-size: 1.5rem;
  position: relative;
}

.species-content h2::after {
  content: '';
  position: absolute;
  bottom: -5px;
  left: 0;
  width: 50px;
  height: 3px;
  background: linear-gradient(to right, var(--primary), var(--secondary));
  border-radius: 3px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  margin: 1rem 0;
}

/* Parameters Grid */
.parameters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 200px), 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
  margin: 1rem 0;
}

.parameter {
  background-color: rgba(26, 159, 218, 0.05);
  padding: 1rem;
  border-radius: var(--border-radius);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.parameter:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.parameter h3 {
  margin: 0 0 0.5rem 0;
  font-size: 1.1rem;
  color: var(--primary);
}

.parameter p {
  margin: 0;
}

/* Definition Lists */
dl {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.5rem 1rem;
}

dt {
  font-weight: 600;
  color: var(--text);
}

dd {
  margin: 0;
}

/* Error Page */
.error-page {
  text-align: center;
  padding: 3rem 0;
  animation: fadeIn 0.5s ease-out;
}

.error-page h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 1rem;
  color: var(--primary);
}

.error-page p {
  max-width: 600px;
  margin: 0 auto 2rem;
}

.back-button {
  display: inline-block;
  background-color: var(--primary);
  color: white;
  padding: 0.75rem 1.5rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  transition: background-color var(--transition-speed), transform var(--transition-speed);
}

.back-button:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
}

/* Animations for page transitions */
@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Page Transitions */
.page-enter {
  opacity: 0;
  transform: translateY(20px);
}

.page-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.5s, transform 0.5s;
}

/* Loading indicator */
.loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100px;
}

.loader {
  width: 48px;
  height: 48px;
  border: 5px solid var(--border);
  border-bottom-color: var(--primary);
  border-radius: 50%;
  animation: rotate 1s linear infinite;
}

@keyframes rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Tooltip */
.tooltip {
  position: relative;
  cursor: help;
}

.tooltip:hover::before {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  padding: 0.5rem;
  background-color: var(--text);
  color: white;
  font-size: 0.8rem;
  border-radius: 0.25rem;
  width: max-content;
  max-width: 200px;
  z-index: 1;
  opacity: 0;
  animation: fadeIn 0.3s ease-out forwards;
}

/* Button Styles */
.btn {
  display: inline-block;
  background-color: var(--primary);
  color: white;
  padding: 0.75rem 1.25rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  border: none;
  cursor: pointer;
  font-weight: 500;
  transition: background-color var(--transition-speed), transform var(--transition-speed), box-shadow var(--transition-speed);
}

.btn:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.btn-secondary {
  background-color: transparent;
  border: 2px solid var(--primary);
  color: var(--primary);
}

.btn-secondary:hover {
  background-color: rgba(26, 159, 218, 0.1);
}

/* Responsive Adjustments - Mobile First approach */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  nav ul {
    position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: var(--background);
    flex-direction: column;
    padding: 80px 20px 20px;
    transition: right var(--transition-speed) ease;
    box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    z-index: 100;
  }
  
  nav ul.open {
    right: 0;
  }
  
  dl {
    grid-template-columns: 1fr;
  }
}

/* Tablet */
@media (min-width: 769px) and (max-width: 1024px) {
  nav {
    padding: 1rem 0;
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .category-grid,
  .species-grid {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

/* Larger screens */
@media (min-width: 1025px) {
  nav {
    padding: 1.25rem 0;
  }
  
  .hero {
    padding: 4rem 0;
  }
  
  .container {
    padding: 0 2rem;
  }
  
  .species-profile {
    padding: 2.5rem;
  }
}

/* Print styles */
@media print {
  nav, .hero, .thumbnails, .tags {
    display: none;
  }
  
  body {
    background-color: white;
    color: black;
  }
  
  .species-profile {
    box-shadow: none;
    margin: 0;
    padding: 0;
  }
  
  .species-content section {
    border-bottom: 1px solid #ccc;
    page-break-inside: avoid;
  }
}

/* Prevent FOUC (Flash of Unstyled Content) */
.no-fouc {
  visibility: hidden;
}

.fouc-ready {
  visibility: visible;
  animation: fadeIn 0.3s ease-out;
}

/* Support for dark mode */
@media (prefers-color-scheme: dark) {
  :root {
    --background: #0f172a;
    --text: #e2e8f0;
    --text-light: #94a3b8;
    --card-bg: #1e293b;
    --border: #334155;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 6px 16px rgba(0, 0, 0, 0.5);
  }
  
  .thumbnail {
    opacity: 0.9;
  }
  
  .thumbnail:hover {
    opacity: 1;
  }
  
  .category-card, .species-card {
    background-color: var(--card-bg);
  }
  
  nav {
    background-color: rgba(15, 23, 42, 0.8);
  }
}

/* Fun Button and Effects */
.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.btn-fun {
  background: linear-gradient(135deg, #ff9a9e, #fad0c4);
  color: #333;
  font-weight: bold;
  border: none;
  border-radius: 2rem;
  padding: 0.5rem 1.25rem;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

.btn-fun::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.8) 10%, transparent 40%);
  transform: rotate(30deg);
  transition: all 0.6s ease;
  opacity: 0;
}

.btn-fun:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.15);
  background: linear-gradient(135deg, #fad0c4, #ff9a9e);
}

.btn-fun:hover::before {
  opacity: 1;
  animation: shine 1.5s infinite;
}

.btn-fun.active {
  background: linear-gradient(135deg, #a18cd1, #fbc2eb);
}

/* Water overlay effect */
.water-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(26, 159, 218, 0.1);
  pointer-events: none;
  z-index: 999;
  animation: wave 8s ease-in-out infinite;
}

@keyframes wave {
  0%, 100% {
    clip-path: polygon(
      0% 45%,
      16% 44%,
      33% 50%,
      54% 60%,
      70% 61%,
      84% 59%,
      100% 52%,
      100% 100%,
      0% 100%
    );
  }
  50% {
    clip-path: polygon(
      0% 60%,
      15% 65%,
      34% 66%,
      51% 62%,
      67% 50%,
      84% 45%,
      100% 46%,
      100% 100%,
      0% 100%
    );
  }
}

/* Bubbles/Fish animation */
.fun-bubble {
  position: fixed;
  bottom: -20px;
  font-size: 30px;
  animation: bubbleRise linear forwards;
  z-index: 1000;
  pointer-events: none;
  user-select: none;
}

@keyframes bubbleRise {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  90% {
    opacity: 1;
  }
  100% {
    transform: translateY(-100vh) rotate(360deg);
    opacity: 0;
  }
}

/* Rainbow text effect */
.rainbow-text {
  background-image: linear-gradient(90deg, 
    #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #8b00ff);
  background-size: 300% auto;
  color: transparent !important;
  -webkit-background-clip: text;
  background-clip: text;
  animation: rainbow 6s linear infinite;
}

@keyframes rainbow {
  0% {
    background-position: 0% 50%;
  }
  100% {
    background-position: 300% 50%;
  }
}

/* Wobble effect for images */
.wobble-effect {
  animation: wobble 3s ease-in-out infinite;
  transform-origin: center center;
}

@keyframes wobble {
  0%, 100% {
    transform: rotate(0deg) scale(1);
  }
  25% {
    transform: rotate(5deg) scale(1.05);
  }
  50% {
    transform: rotate(-3deg) scale(1.05);
  }
  75% {
    transform: rotate(3deg) scale(1.05);
  }
}

/* Additional fun mode styling */
.fun-mode {
  transition: all 0.5s ease;
}

.fun-mode .container {
  animation: gentle-bounce 3s ease-in-out infinite;
}

@keyframes gentle-bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .wobble-effect,
  .fun-bubble,
  .rainbow-text,
  .water-overlay,
  .fun-mode .container {
    animation: none !important;
    transform: none !important;
  }
}