/* Spotify-Themed CSS */

/* ================================
   1. CSS Variables and Root Styles
=============================== */
:root {
    --primary-color: #1DB954; /* Spotify Green */
    --secondary-color: #1ED760; /* Lighter Spotify Green */
    --accent-color: #1DB954; 
    --background-color: #191414; /* Spotify Black */
    --text-color: #FFFFFF; /* White for contrast */
    --light-text: #B3B3B3; /* Light grey for secondary text */
    --card-bg: #282828; /* Dark grey for cards */
    --gradient-primary: linear-gradient(135deg, #1DB954 0%, #1ED760 100%);
    --gradient-hover: linear-gradient(135deg, #1ED760 0%, #1DB954 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.4);
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* ================================
   2. Global Reset and Base Styles
=============================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* ================================
   3. Typography
=============================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    text-emphasis-color: transparent;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    color: var(--text-color);
}

/* ================================
   4. Hero Section
=============================== */
.hero {
    min-height: 100vh;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    background: linear-gradient(rgba(0,0,0,0.9), rgba(0,0,0,0.9));
}

.sliding-text {
    position: absolute;
    width: 100%;
    white-space: nowrap;
    opacity: 0.1;
    color: var(--primary-color);
    font-size: 2rem;
    font-weight: 700;
    text-transform: uppercase;
    pointer-events: none;
    letter-spacing: 2px;
}

/* Positioning and animation adjustments */
.sliding-text-1 {
    top: 20%;
    animation: slideLeft 40s linear infinite;
}

.sliding-text-2 {
    top: 40%;
    animation: slideRight 35s linear infinite;
}

.sliding-text-3 {
    top: 65%;
    animation: slideLeft 45s linear infinite;
}

.sliding-text-4 {
    top: 80%;
    animation: slideRight 30s linear infinite;
}

@keyframes slideLeft {
    0% {
        transform: translateX(0%);
    }
    100% {
        transform: translateX(-50%);
    }
}

@keyframes slideRight {
    0% {
        transform: translateX(-50%);
    }
    100% {
        transform: translateX(0%);
    }
}

.hero-content {
    max-width: 1200px;
    margin: auto;
    text-align: center;
    padding: 2rem 2rem;
    position: relative;
    z-index: 2;
    background: transparent;
}

.animated-header h1 {
    font-size: 5.5rem;
    color: var(#FFFFFF);
    margin-bottom: 0.25rem;
}

.title-text {
    font-size: 1.5rem;
    color: var(--light-text);
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.25rem;
    max-width: 600px;
    margin: 0 auto 1.5rem;
    color: var(--light-text);
}

/* Replace Bitcoin-specific symbols with Spotify-relevant visuals */
/* Bouncing Circles Styles */
#circleContainer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    pointer-events: none;
    z-index: 1;
}
.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.3;
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    transition: transform 0.016s linear;
    will-change: transform;
    display: flex;                /* This enables flexbox layout */
    align-items: center;         /* This centers vertically */
    justify-content: center;     /* This centers horizontally */
}

.circle span {
    font-size: 1.5rem;
    color: var(--background-color);
}

/* ================================
   5. Work Section
=============================== */
.work-section {
    padding: 6rem 2rem;
    background-color: var(--background-color);
}

.project-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-lg);
    color: var(--text-color);
    transition: var(--transition);
}

/*.project-card:hover {
    transform: translateY(-5px);
    background: var(--gradient-hover);
}*/

.project-card h3 {
    color: var(--card-bg);
    font-size: 1.5rem;
}

.project-card p {
    color: var(--background-color);
    font-size: 1.1rem;
}

.chart-figure {
    width: 100%;
    min-height: 400px;
    background: var(--card-bg);
    border-radius: var(--background-color);
    overflow: hidden;
    position: relative;
}
/* ================================
   6. Navigation Styles
=============================== */
nav {
    display: flex;
    justify-content: center;
    padding: 1rem 0;
    background-color: rgba(0, 0, 0, 0.8);
    border-radius: var(--border-radius);
}

.nav-links a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    font-size: 1rem;
    transition: var(--transition);
}

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

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

/* ================================
   7. Footer
=============================== */
footer {
    padding: 2rem;
    text-align: center;
    background-color: var(--background-color);
    border-top: 1px solid var(--primary-color);
}

footer p {
    color: var(--light-text);
    font-size: 0.9rem;
}