:root {
    --primary-color: #9b59b6;
    --secondary-color: #e74c3c;
    --font-family: 'Poppins', sans-serif;

    /* Light Mode Variables */
    --background-color-light: #ecf0f1;
    --text-color-light: #2c3e50;
    --card-background-light: #ffffff;
    --header-background-light: rgba(255, 255, 255, 0.8);
    --header-border-light: rgba(0, 0, 0, 0.1);

    /* Dark Mode Variables */
    --background-color-dark: #121212;
    --text-color-dark: #ecf0f1;
    --card-background-dark: rgba(255, 255, 255, 0.05);
    --header-background-dark: rgba(255, 255, 255, 0.1);
    --header-border-dark: rgba(255, 255, 255, 0.2);
}

body {
    font-family: var(--font-family);
    margin: 0;
    padding: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
}

body.light-mode {
    background-color: var(--background-color-light);
    color: var(--text-color-light);
    background-image: none;
}

body.dark-mode {
    background-color: var(--background-color-dark);
    color: var(--text-color-dark);
    background-image: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.9)), url('https://www.transparenttextures.com/patterns/noisy-net.png');
}

.glassmorphism {
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: background-color 0.3s ease, border-bottom 0.3s ease;
}

body.light-mode .glassmorphism {
    background: var(--header-background-light);
    border-bottom: 1px solid var(--header-border-light);
}

body.dark-mode .glassmorphism {
    background: var(--header-background-dark);
    border-bottom: 1px solid var(--header-border-dark);
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 1.5rem;
}

.nav-links a {
    text-decoration: none;
    font-weight: 400;
    transition: color 0.3s ease;
}

body.light-mode .nav-links a {
    color: var(--text-color-light);
}
body.dark-mode .nav-links a {
    color: var(--text-color-dark);
}

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

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform 0.3s ease;
}
body.light-mode .theme-toggle {
    color: var(--text-color-light);
}
body.dark-mode .theme-toggle {
    color: var(--text-color-dark);
}
.theme-toggle:hover {
    transform: scale(1.2);
}

main {
    padding: 2rem;
}

.daily-report {
    margin-bottom: 3rem;
}

.daily-report h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.report-placeholder {
    background: var(--card-background);
    border: 2px dashed var(--primary-color);
    border-radius: 15px;
    padding: 4rem 2rem;
    text-align: center;
    color: var(--text-color);
}

body.light-mode .report-placeholder {
    background: var(--card-background-light);
    color: var(--text-color-light);
}

body.dark-mode .report-placeholder {
    background: var(--card-background-dark);
    color: var(--text-color-dark);
}

.hero {
    text-align: center;
    padding: 4rem 2rem;
}

.gradient-text {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.cta-button {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    box-shadow: 0 0 20px rgba(155, 89, 182, 0.5);
}

.cta-button:hover {
    transform: scale(1.05);
    box-shadow: 0 0 30px rgba(155, 89, 182, 0.8);
}

.trends-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.rising-trends {
    margin-top: 4rem;
}

.rising-trends h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 1.5rem;
}


footer {
    text-align: center;
    padding: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    transition: border-top 0.3s ease;
}

body.light-mode footer {
    border-top: 1px solid var(--header-border-light);
}

body.dark-mode footer {
    border-top: 1px solid var(--header-border-dark);
}

/* Trend Card Theming */
body.light-mode trend-card {
    --card-background: var(--card-background-light);
    --text-color: var(--text-color-light);
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}
body.light-mode trend-card:hover {
    box-shadow: 0 15px 40px rgba(0,0,0,0.15);
}

body.dark-mode trend-card {
    --card-background: var(--card-background-dark);
    --text-color: var(--text-color-dark);
    box-shadow: 0 10px 30px rgba(0,0,0,0.5);
}
body.dark-mode trend-card:hover {
    box-shadow: 0 15px 40px rgba(0,0,0,0.7);
}