/* Main Stylesheet */

:root {
    --primary-blue: #0096D6;
    --secondary-blue: #003C71;
    --text-dark: #333333;
    --text-light: #666666;
    --background-light: #F5F5F5;
    --white: #FFFFFF;
    --spacing-unit: 1rem;
    --transition: all 0.3s ease;
}

/* Reset & Base Styles */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: var(--spacing-unit);
    line-height: 1.2;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 2rem;
}

p {
    margin-bottom: var(--spacing-unit);
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--white);
    padding: 1rem 2rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

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

.logo {
    height: 40px;
    width: auto;
}

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

.nav-link {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

/* Hero Section */
.hero {
    padding-top: 80px;
    min-height: 60vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-blue), var(--secondary-blue));
    color: var(--white);
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Content Sections */
.section {
    padding: 4rem 2rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.card {
    background: var(--white);
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-content {
    padding: 1.5rem;
}

.expand-content {
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
}

.expand-content.expanded {
    max-height: 1000px;
}

/* Buttons */
.expand-button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-blue);
    color: var(--white);
    text-decoration: none;
    border-radius: 4px;
    transition: var(--transition);
}

.expand-button:hover {
    background-color: var(--secondary-blue);
    }

/* Footer */
.footer {
    background: linear-gradient(135deg, #1e1e2f, #2b2b3a);
    color: #f1f1f1;
    padding: 4rem 2rem;
    margin-top: 4rem;
    box-shadow: 0 -5px 10px rgba(0, 0, 0, 0.2);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    text-align: center;
}

.footer-section h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--primary-blue);
    text-transform: uppercase;
    font-weight: bold;
}

.footer-section p {
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.footer-section p a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: bold;
}

.footer-section p a:hover {
    text-decoration: underline;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #f1f1f1;
    text-decoration: none;
    font-size: 0.95rem;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    font-size: 0.85rem;
    opacity: 0.8;
    color: #cccccc;
    border-top: 1px solid #444;
    padding-top: 1rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    html {
        font-size: 14px;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
    }

    .nav-menu.active {
        display: flex;
    }

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

/* General styling */
.trend-analysis, .section {
    padding: 2rem;
    background: #f9f9f9;
    border-radius: 10px;
    margin-bottom: 2rem;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.trend-graph {
    position: relative;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    color: white;
    margin-top: 1rem;
    font-size: 1.2rem;
}

.trend-graph.declining {
    background: linear-gradient(135deg, #ff4c4c, #ff7878);
}

.trend-graph.rising {
    background: linear-gradient(135deg, #4caf50, #81c784);
}

.trend-graph.neutral {
    background: linear-gradient(135deg, #ffc107, #ffd54f);
}

.trend-value {
    display: block;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    opacity: 0;
    transform: translateY(20px);
}

/* Market Segment Styling */
.segment {
    background: #ffffff;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    margin-bottom: 2rem;
}

.market-potential {
    margin-top: 1rem;
    font-size: 1.2rem;
    font-weight: bold;
    text-align: center;
    color: #4caf50;
}

.potential-value {
    display: block;
    font-size: 2rem;
    opacity: 0;
    transform: translateY(20px);
}

/* Animations */
@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(20px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dark Mode */
body.dark-mode {
    background-color: #121212;
    color: #ffffff;
}

.dark-mode .header, .dark-mode .footer {
    background-color: #1e1e1e;
}

/* Loading Spinner */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-spinner.hidden {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease;
}

.spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Scroll to Top Button */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: #3498db;
    color: #fff;
    border: none;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    font-size: 1.2rem;
    display: none;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
}

.scroll-to-top:hover {
    background: #217dbb;
}