/* 
 * Prolific Research - Main Light-Theme Stylesheet
 * Contains resets, base styles, typographic scales, and core layouts.
 */

@import url('variables.css');

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

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Base Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1.25;
}

h1 {
    font-size: 3rem;
    font-weight: 800;
}

h2 {
    font-size: 2.25rem;
    font-weight: 700;
}

h3 {
    font-size: 1.75rem;
    font-weight: 600;
}

p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
}

a {
    color: var(--color-cyan);
    text-decoration: none;
    transition: var(--transition-fast);
}

a:hover {
    color: var(--color-navy);
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Sections */
section {
    padding: 5rem 0;
    position: relative;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
}

.section-alternate {
    background-color: var(--bg-secondary);
}

/* Subtle Glowing background elements for light mode */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 0;
    pointer-events: none;
    opacity: 0.5; /* lower opacity for light background */
}

.glow-orb-cyan {
    background: radial-gradient(circle, var(--color-cyan-glow) 0%, transparent 70%);
    width: 400px;
    height: 400px;
}

.glow-orb-green {
    background: radial-gradient(circle, var(--color-green-glow) 0%, transparent 70%);
    width: 350px;
    height: 350px;
}

.glow-orb-orange {
    background: radial-gradient(circle, var(--color-orange-glow) 0%, transparent 70%);
    width: 300px;
    height: 300px;
}

/* Buttons and Links */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    font-family: var(--font-heading);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: var(--transition-normal);
    cursor: pointer;
    border: none;
    font-size: 0.95rem;
}

.btn-primary {
    background-color: var(--color-navy);
    color: var(--color-white);
}

.btn-primary:hover {
    background-color: var(--color-cyan);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(11, 26, 48, 0.15);
}

.btn-accent {
    background-color: var(--color-orange);
    color: var(--color-white);
}

.btn-accent:hover {
    background-color: #e07216;
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(245, 130, 32, 0.3);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-navy);
    color: var(--color-navy);
}

.btn-outline:hover {
    background-color: var(--color-navy);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-outline-white {
    background-color: transparent;
    border: 1px solid var(--color-navy);
    color: var(--color-navy);
}

.btn-outline-white:hover {
    background-color: var(--color-navy);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-white {
    background-color: #ffffff;
    border: 1.5px solid var(--color-navy);
    color: var(--color-navy);
}

.btn-white:hover {
    background-color: var(--color-navy);
    color: var(--color-white) !important;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(11, 26, 48, 0.15);
}

/* Badges / Micro Labels */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35rem 0.85rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius-full);
    margin-bottom: 1rem;
    font-family: var(--font-heading);
}

.badge-cyan {
    background-color: rgba(0, 130, 200, 0.06);
    color: var(--color-cyan);
    border: 1px solid rgba(0, 130, 200, 0.15);
}

.badge-green {
    background-color: rgba(141, 198, 63, 0.06);
    color: var(--color-green);
    border: 1px solid rgba(141, 198, 63, 0.15);
}

.badge-orange {
    background-color: rgba(245, 130, 32, 0.06);
    color: var(--color-orange);
    border: 1px solid rgba(245, 130, 32, 0.15);
}

/* Glassmorphism Cards for Light Mode */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.glass-card:hover {
    border-color: rgba(0, 130, 200, 0.2);
    background: rgba(255, 255, 255, 0.95);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Responsive Overrides */
@media (max-width: 768px) {
    h1 { font-size: 2.25rem; }
    h2 { font-size: 1.75rem; }
    section { padding: 3.5rem 0; }
}