/* ===== Global Styles ===== */
:root {
    --primary-color: #1e88e5;
    --secondary-color: #00bcd4;
    --accent-color: #ff6b6b;
    --dark-bg: #0a1428;
    --light-bg: #f0f4f8;
    --card-bg: #ffffff;
    --text-dark: #1a1a1a;
    --text-light: #666666;
    --border-color: #e0e0e0;
    --success: #4caf50;
    --warning: #ff9800;
    --saltwater-gradient: linear-gradient(135deg, #1e88e5 0%, #00bcd4 100%);
    --freshwater-gradient: linear-gradient(135deg, #4caf50 0%, #00bcd4 100%);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: 1rem;
    font-weight: 700;
}

h1 {
    font-size: 3rem;
    color: var(--dark-bg);
}

h2 {
    font-size: 2.2rem;
    color: var(--primary-color);
}

h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
    line-height: 1.8;
}

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

a:hover {
    color: var(--secondary-color);
}

/* ===== Navbar ===== */
.navbar {
    background: var(--dark-bg);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
}

.logo-text {
    color: var(--secondary-color);
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    color: #fff;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    background: var(--secondary-color);
    color: var(--dark-bg);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--secondary-color);
    margin: 5px 0;
    transition: 0.3s;
}

/* ===== Hero Section ===== */
.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    background: var(--saltwater-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-content p {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-block;
    border: none;
}

.btn-primary {
    background: var(--saltwater-gradient);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(30, 136, 229, 0.3);
}

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

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
}

.hero-animation {
    position: relative;
    height: 400px;
}

.fish {
    position: absolute;
    font-size: 3rem;
    animation: swim 6s infinite ease-in-out;
}

.fish-1 {
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.fish-2 {
    top: 50%;
    right: 10%;
    animation-delay: 2s;
}

.fish-3 {
    bottom: 10%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes swim {
    0%, 100% {
        transform: translateX(0) translateY(0);
    }
    50% {
        transform: translateX(50px) translateY(-20px);
    }
}

.bubble {
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid var(--secondary-color);
    border-radius: 50%;
    animation: rise 3s infinite ease-in;
}

.bubble:nth-child(4) {
    left: 20%;
    bottom: 0;
    animation-delay: 0s;
}

.bubble:nth-child(5) {
    left: 40%;
    bottom: 0;
    animation-delay: 1s;
}

.bubble:nth-child(6) {
    left: 60%;
    bottom: 0;
    animation-delay: 2s;
}

@keyframes rise {
    0% {
        bottom: 0;
        opacity: 1;
    }
    100% {
        bottom: 400px;
        opacity: 0;
    }
}

/* ===== Stats Section ===== */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.stat-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(30, 136, 229, 0.2);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: var(--saltwater-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-text {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-top: 0.5rem;
}

/* ===== Featured Section ===== */
.featured {
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.featured h2 {
    text-align: center;
    margin-bottom: 3rem;
}

.featured-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.featured-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.featured-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.featured-image {
    width: 100%;
    padding: 3rem;
    background: var(--saltwater-gradient);
    font-size: 4rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.featured-card h3 {
    padding: 1.5rem 1.5rem 0;
    color: var(--text-dark);
}

.water-type {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin: 0 1.5rem;
}

.water-type.saltwater {
    background: rgba(30, 136, 229, 0.2);
    color: var(--primary-color);
}

.water-type.freshwater {
    background: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.featured-desc {
    padding: 0 1.5rem;
    color: var(--text-light);
    font-size: 0.95rem;
}

.learn-more {
    display: inline-block;
    padding: 1rem 1.5rem;
    margin: 1rem 1.5rem;
    background: var(--saltwater-gradient);
    color: white;
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.learn-more:hover {
    transform: translateX(5px);
}

/* ===== About Page ===== */
.about-hero {
    background: var(--saltwater-gradient);
    color: white;

    padding: 4rem 2rem;

    text-align: center;

    margin-top: 80px; /* Push content below navbar */
}
.about-hero h1 {
    color: white;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.about-hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.2rem;
}

.about-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

.about-section {
    background: var(--card-bg);
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.about-section h2 {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 3px solid var(--secondary-color);
}

/* ===== Comparison Styles ===== */
.comparison-toggle {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.toggle-btn {
    padding: 0.8rem 1.5rem;
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
}

.toggle-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.comparison-view {
    display: none;
}

.comparison-view.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

.comparison-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

.comparison-table thead {
    background: var(--saltwater-gradient);
    color: rgb(255, 255, 255);
}

.comparison-table th,
.comparison-table td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.comparison-table tr:hover {
    background-color: #27dac2;
}

.comparison-table tr:nth-child(even) {
    background-color: #fafafa;
}

.comparison-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.comp-card {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    border-left: 5px solid var(--primary-color);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.saltwater-card {
    border-left-color: var(--primary-color);
}

.saltwater-card h3 {
    color: var(--primary-color);
}

.freshwater-card {
    border-left-color: var(--success);
}

.freshwater-card h3 {
    color: var(--success);
}

.comp-detail {
    margin-bottom: 1.5rem;
}

.comp-detail h4 {
    margin-bottom: 0.5rem;
    color: var(--text-dark);
    font-size: 1rem;
}

.comp-detail p {
    margin: 0;
    font-size: 0.95rem;
}

/* ===== Physiology Grid ===== */
.physiology-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.phys-card {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    padding: 2rem;
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.phys-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(30, 136, 229, 0.15);
}

.phys-card h3 {
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.phys-card p {
    margin: 0;
    font-size: 0.95rem;
}

/* ===== Benefits List ===== */
.benefits-list {
    list-style: none;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.benefits-list li {
    padding: 1rem;
    background: linear-gradient(135deg, #f0f4f8 0%, #e0ecf7 100%);
    border-left: 4px solid var(--primary-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.benefits-list li:before {
    content: "✓ ";
    color: var(--success);
    font-weight: 700;
    margin-right: 0.5rem;
}

.benefits-list li:hover {
    transform: translateX(5px);
    box-shadow: 0 5px 15px rgba(30, 136, 229, 0.1);
}

/* ===== Timeline ===== */
.timeline {
    position: relative;
    padding: 2rem 0;
}

.timeline:before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 3px;
    height: 100%;
    background: var(--secondary-color);
}

.timeline-item {
    margin-bottom: 3rem;
    width: 48%;
}

.timeline-item:nth-child(odd) {
    margin-left: 0;
    text-align: right;
    padding-right: 2rem;
}

.timeline-item:nth-child(even) {
    margin-left: 52%;
    padding-left: 2rem;
}

.timeline-date {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.timeline-content {
    background: var(--light-bg);
    padding: 1.5rem;
    border-radius: 10px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.timeline-content h4 {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

.timeline-content p {
    margin: 0;
    font-size: 0.95rem;
}

/* ===== Conservation Section ===== */
.conservation {
    background: linear-gradient(135deg, #e0f7fa 0%, #e1f5fe 100%);
    border-left: 5px solid var(--secondary-color);
}

.conservation h2 {
    color: var(--secondary-color);
}

.conservation-points {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.point {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
}

.point:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
}

.point h3 {
    color: var(--secondary-color);
    margin-bottom: 0.8rem;
    font-size: 1.2rem;
}

.point p {
    margin: 0;
    font-size: 0.95rem;
}

/* ===== FAQ Section ===== */
.faq-container {
    margin-top: 2rem;
}

.faq-item {
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    background: var(--light-bg);
    border: none;
    cursor: pointer;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: var(--secondary-color);
    color: white;
}

.toggle-icon {
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.faq-item.active .toggle-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    background: white;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 1.5rem;
    max-height: 500px;
}

.faq-answer p {
    margin: 0;
}

/* ===== Species Pages ===== */
.species-hero {
    color: white;
    padding: 3rem 2rem;
    text-align: center;
}

.species-hero h1 {
    color: white;
    font-size: 2.8rem;
    margin-bottom: 0.5rem;
}

.species-hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.1rem;
}

.saltwater-hero {
    background: var(--saltwater-gradient);
}

.freshwater-hero {
    background: var(--freshwater-gradient);
}

/* ===== Filter Section ===== */
.filter-section {
    background: var(--card-bg);
    padding: 2rem;
    margin: 2rem 0;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}

.filter-container {
    max-width: 1100px;
    margin: 0 auto;
}

.filter-container h2 {
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
}

.filter-controls {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 1rem;
}

.search-box,
.filter-select {
    padding: 0.8rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.search-box:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 10px rgba(30, 136, 229, 0.2);
}

/* ===== Species Container ===== */
.species-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem;
}

.fish-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.fish-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
}

.fish-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
}

.fish-image {
    width: 100%;
    height: 200px;
    background: var(--saltwater-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    font-weight: bold;
}

.fish-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.fish-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    gap: 1rem;
}

.fish-name {
    margin: 0 0 0.5rem 0;
}

.fish-scientific {
    color: var(--text-light);
    font-style: italic;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
}

.badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.badge {
    display: inline-block;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge-care-beginner {
    background: rgba(76, 175, 80, 0.2);
    color: var(--success);
}

.badge-care-intermediate {
    background: rgba(255, 152, 0, 0.2);
    color: var(--warning);
}

.badge-care-advanced {
    background: rgba(255, 87, 34, 0.2);
    color: #ff5722;
}

.badge-size {
    background: rgba(30, 136, 229, 0.2);
    color: var(--primary-color);
}

.fish-description {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.fish-details {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-bottom: 1rem;
}

.detail-item {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    font-size: 0.9rem;
}

.detail-label {
    font-weight: 600;
    color: var(--text-dark);
}

.detail-value {
    color: var(--text-light);
}

.expand-btn {
    width: 100%;
    padding: 0.8rem;
    background: var(--saltwater-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.expand-btn:hover {
    transform: scale(1.02);
}

/* ===== Modal Styles ===== */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    transition: all 0.3s ease;
}

.modal-close:hover {
    color: var(--text-dark);
    transform: rotate(90deg);
}

.modal-body {
    padding: 2rem;
}

.care-section {
    margin-bottom: 2rem;
}

.care-section h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.care-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: var(--light-bg);
    border-radius: 8px;
}

.care-icon {
    font-size: 1.5rem;
    min-width: 2rem;
}

.care-info h4 {
    margin-bottom: 0.3rem;
}

.care-info p {
    margin: 0;
    font-size: 0.9rem;
}

/* ===== No Results ===== */
.no-results {
    text-align: center;
    padding: 4rem 2rem;
    font-size: 1.2rem;
    color: var(--text-light);
}

/* ===== Footer ===== */
.footer {
    background: var(--dark-bg);
    color: white;
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
}

.footer p {
    margin: 0;
    color: rgba(255, 255, 255, 0.8);
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav-links {
        position: absolute;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--dark-bg);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        gap: 0;
    }

    .nav-links.active {
        left: 0;
    }

    .hero {
        grid-template-columns: 1fr;
        padding: 2rem;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .timeline:before {
        left: 0;
    }

    .timeline-item {
        width: 100%;
        text-align: left;
        padding-left: 2rem;
        margin-left: 0 !important;
    }

    .comparison-table {
        font-size: 0.85rem;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 0.8rem;
    }

    .filter-controls {
        grid-template-columns: 1fr;
    }

    .fish-grid {
        grid-template-columns: 1fr;
    }

    .featured-grid {
        grid-template-columns: 1fr;
    }

    .about-section {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-container {
        padding: 0 1rem;
    }

    .logo-text {
        font-size: 1.2rem;
    }

    .nav-links {
        gap: 0;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .modal-content {
        width: 95%;
        border-radius: 10px;
    }

    .modal-header,
    .modal-body {
        padding: 1rem;
    }
}