/* DESIGN SYSTEM VARIABLES */
:root {
    --bg-color: #0288d1;       /* Sky Blue */
    --text-navy: #1e1e2f;      /* Dark Navy for high readability */
    --text-light: #f0f0f0;     /* Soft White for paragraphs */
    --accent-teal: #03ad99;    /* Button color */
    --accent-orange: #ff7043;  /* Hover color */
    --card-bg: #ffffff;        /* White cards */
    --border-gray: #e1e4e8;
}

/* GLOBAL STYLES */
body {
    background-color: var(--bg-color);
    color: var(--text-light);
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* LAYOUT CONTAINERS */
main, header, nav, .main-container {
    width: 90%;
    max-width: 850px;
    margin: 20px auto;
}

/* TYPOGRAPHY */
h1, h2 {
    color: #ffffff;
    text-align: left;
}

/* Make page titles on index stand out */
h1 { color: var(--text-navy); } 

p {
    line-height: 1.6;
    font-size: 1.05rem;
}

/* NAVIGATION SYSTEM */
.nav-container {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    justify-content: flex-start;
}

.nav-link-button {
    background-color: var(--accent-teal);
    color: var(--text-navy);
    padding: 10px 20px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.2s ease, color 0.2s ease;
}

.nav-link-button:hover {
    background-color: var(--accent-orange);
    color: white;
}

/* PROJECTS GRID SYSTEM */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 20px 0;
}

/* PROJECT CARDS */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border-gray);
    border-left: 5px solid var(--bg-color);
    border-radius: 4px;
    padding: 20px;
    color: var(--text-navy); /* Cards need dark text for white background */
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.card h3 {
    margin-top: 0;
    color: var(--bg-color);
}

.card p {
    color: #555; /* Slightly muted for card content */
    font-size: 0.95rem;
}

/* BADGES & LINKS */
.badge {
    background: #e1f5fe;
    color: var(--bg-color);
    padding: 4px 10px;
    font-size: 0.75rem;
    font-weight: bold;
    border-radius: 12px;
    margin-bottom: 10px;
    display: inline-block;
}

.cta-link {
    margin-top: auto;
    color: var(--bg-color);
    font-weight: bold;
    text-decoration: none;
}

.cta-link:hover { text-decoration: underline; }