body{
  padding: 25px;
}
.title {
	color: #5C6AC4;
}
/* --- Global Styles & Variables --- */
:root {
    --primary-color: #005f73;
    --secondary-color: #0a9396;
    --accent-color: #94d2bd;
    --light-gray: #f8f9fa;
    --dark-gray: #343a40;
    --text-color: #495057;
    --white: #ffffff;
    --shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.7;
    background-color: var(--light-gray);
    color: var(--text-color);
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

h1, h2, h3 {
    font-weight: 600;
    color: var(--dark-gray);
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 20px;
    color: var(--primary-color);
}

.section-subtitle {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px auto;
    font-size: 1.1rem;
}

section {
    padding: 80px 0;
}

/* --- Header & Navigation --- */
header {
    background: var(--white);
    color: var(--primary-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

header .logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

header nav ul {
    list-style: none;
    display: flex;
}

header nav ul li {
    margin-left: 2rem;
}

header nav ul li a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    transition: color 0.3s ease;
}

header nav ul li a:hover {
    color: var(--secondary-color);
}

/* --- Hero Section --- */
#hero {
    background: linear-gradient(rgba(0, 95, 115, 0.8), rgba(0, 95, 115, 0.8)), url('https://images.unsplash.com/photo-1549289218-6c8491c772e2?q=80&w=2070&auto=format&fit=crop') center center/cover no-repeat;
    height: 70vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: var(--white);
    padding-top: 60px; /* Header offset */
}

#hero .hero-content {
    max-width: 800px;
}

#hero h2 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
}

#hero p {
    font-size: 1.2rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
}

#hero .project-date {
    background: var(--accent-color);
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
}

/* --- Overview Section --- */
.overview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.overview-card {
    background: var(--white);
    padding: 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.overview-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.overview-card i {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 20px;
}

.overview-card h3 {
    margin-bottom: 15px;
    color: var(--primary-color);
}

/* --- Methodology Section (Timeline) --- */
#methodology {
    background: var(--white);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 3px;
    background: var(--accent-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -1.5px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
}
.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-icon {
    position: absolute;
    width: 50px;
    height: 50px;
    background: var(--white);
    border: 3px solid var(--secondary-color);
    border-radius: 50%;
    top: 30px;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    color: var(--secondary-color);
}
.timeline-item:nth-child(odd) .timeline-icon {
    right: -25px;
}
.timeline-item:nth-child(even) .timeline-icon {
    left: -25px;
}


.timeline-content {
    padding: 20px 30px;
    background: var(--light-gray);
    border-radius: 8px;
    position: relative;
}
.timeline-item:nth-child(odd) .timeline-content {
    text-align: right;
}

.timeline-content h3 {
    color: var(--primary-color);
}

/* --- Results / Chart Section --- */
.chart-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
    align-items: flex-start;
}

.chart-wrapper {
    background: var(--white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}
.chart-wrapper h3 {
    text-align: center;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

/* --- Technology Stack --- */
#tech {
    background: var(--white);
}

.tech-stack-icons {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.tech-icon {
    text-align: center;
    font-size: 1.2rem;
    color: var(--text-color);
}

.tech-icon i {
    font-size: 4rem;
    color: var(--secondary-color);
    margin-bottom: 10px;
    transition: transform 0.3s ease;
}

.tech-icon:hover i {
    transform: scale(1.1);
    color: var(--primary-color);
}

/* --- Footer --- */
footer {
    background: var(--dark-gray);
    color: var(--light-gray);
    text-align: center;
    padding: 2rem 0;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    h2 { font-size: 2rem; }
    
    header {
        flex-direction: column;
        padding: 1rem;
    }
    header .logo { margin-bottom: 10px; }
    header nav ul li { margin: 0 0.75rem; }

    #hero { height: auto; padding: 120px 20px 60px; }
    #hero h2 { font-size: 2.5rem; }

    .timeline::after { left: 25px; }
    .timeline-item { width: 100%; padding-left: 70px; padding-right: 15px; }
    .timeline-item:nth-child(odd), .timeline-item:nth-child(even) { left: 0; }
    .timeline-item:nth-child(odd) .timeline-content, .timeline-item:nth-child(even) .timeline-content { text-align: left; }
    .timeline-icon { left: 0; }
}