/* --- Root Variables & Base Styles --- */
:root {
    --bg-dark: #0f172a;
    --bg-gradient: radial-gradient(circle at top right, #1e293b, #0f172a);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-primary: #38bdf8;
    --accent-secondary: #818cf8;
    --glass-bg: rgba(255, 255, 255, 0.03);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --font-main: 'Inter', sans-serif;
    --transition: all 0.3s ease;
}

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

html { 
    scroll-behavior: smooth; 
}

body {
    font-family: var(--font-main);
    background: var(--bg-dark);
    background-image: var(--bg-gradient);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

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

ul { 
    list-style: none; 
}

.container { 
    max-width: 1200px; 
    margin: 0 auto; 
    padding: 0 20px; 
}

/* --- Navigation --- */
nav {
    position: fixed;
    top: 0; left: 0; width: 100%; z-index: 1000;
    padding: 1rem 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
}

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

.logo { 
    font-size: 1.5rem; 
    font-weight: 800; 
    color: var(--text-primary); 
}

.logo span { 
    color: #33CC66; 
}

.nav-links { 
    display: flex; 
    gap: 2rem; 
}

/* --- Hero Section --- */
#hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    background: linear-gradient(rgba(15, 23, 42, 0.85), rgba(15, 23, 42, 0.85)), 
                url('images/commandcenter.png');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.hero-content h1 { 
    margin-top: 80px; 
    font-size: 2.5rem; 
    font-weight: 800; 
    margin-bottom: 1.5rem; 
    line-height: 1.1; 
}

.highlight {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-content p { 
    font-size: 1.3rem; 
    color: var(--text-secondary); 
    padding-top: 40px; 
    max-width: 900px; 
    margin: 0 auto 2rem; 
}

.hero-btns { 
    display: flex; 
    gap: 1rem; 
    justify-content: center; 
}

/* --- Buttons --- */
.btn { 
    display: inline-flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 12px 28px; 
    border-radius: 50px; 
    font-weight: 600; 
    cursor: pointer; 
    min-height: 54px;
    transition: var(--transition);
    border: none;
}

.btn-primary, .btn-outline { 
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)); 
    color: #fff; 
}

.btn-primary:hover {
    box-shadow: 0 0 20px rgba(56, 189, 248, 0.6); 
    transform: translateY(-2px); 
    filter: brightness(1.1); 
}

/* --- Components --- */
.proof-chips { 
    display: flex; 
    flex-wrap: wrap; 
    gap: 10px; 
    justify-content: center; 
    margin: 22px 0 26px; 
}

.chip {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 8px 12px;
    border-radius: 999px;
    font-size: 0.95rem;
    color: var(--text-secondary);
    backdrop-filter: blur(10px);
}

section { 
    padding: 80px 0; 
}

.section-title {
    font-size: 2rem; 
    font-weight: 700; 
    margin-bottom: 3rem;
    background: linear-gradient(90deg, var(--accent-primary), var(--text-primary));
    -webkit-background-clip: text; 
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 2rem;
    transition: var(--transition);
    margin-bottom: 20px;
}

/* --- Impact Grid --- */
.impact-grid { 
    display: grid; 
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); 
    gap: 2rem; 
}

.impact-card h3 { 
    font-size: 2.5rem; 
    color: var(--accent-primary); 
    margin-bottom: 0.5rem; 
}

/* --- Case Study Grid --- */
.case-study-grid {
    display: grid;
    gap: 2rem;
    grid-template-columns: repeat(4, 1fr);
}

.case-study-grid .glass-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    margin-bottom: 0; /* Override general glass-card margin for grid consistency */
}

.case-study-grid .glass-card span {
    color: var(--accent-primary); 
    font-weight: 700; 
    font-size: 0.8rem; 
    text-transform: uppercase; 
    letter-spacing: 1px;
}

.case-study-grid .glass-card h3 {
    margin: 10px 0; 
    font-size: 1.5rem;
}

.case-study-grid .glass-card p {
    font-size: 0.95rem; 
    margin-bottom: 25px;
}

.case-study-grid .btn {
    margin-top: auto; 
    width: 100%; 
}

/* --- Experience Timeline --- */
.timeline { 
    border-left: 2px solid rgba(255,255,255,0.1); 
    padding-left: 2rem; 
    margin-left: 1rem; 
}

.job-header { 
    display: flex; 
    justify-content: space-between; 
    flex-wrap: wrap; 
    margin-bottom: 1rem; 
}

.job-title { 
    font-size: 1.3rem; 
    font-weight: 700; 
    color: #fff; 
}

.job-company { 
    color: var(--accent-primary); 
    font-weight: 600; 
    font-size: 1.1rem; 
}

.parent-co { 
    font-size: 0.9rem; 
    color: var(--text-secondary); 
    display: block; 
    margin-top: 2px; 
}

.job-desc ul { 
    list-style: disc; 
    margin-left: 1.5rem; 
    margin-top: 10px; 
}

/* --- Skills --- */
.skills-wrapper { 
    display: flex; 
    flex-wrap: wrap; 
    justify-content: center; 
    gap: 10px; 
}

.skill-tag {
    padding: 8px 16px; 
    background: rgba(255,255,255,0.05);
    border: 1px solid var(--glass-border); 
    border-radius: 20px; 
    font-size: 0.9rem;
}

/* --- Footer --- */
footer { 
    padding: 50px 0; 
    text-align: center; 
    border-top: 1px solid var(--glass-border); 
}

/* --- Media Queries --- */
@media (max-width: 1100px) {
    .case-study-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero-content h1 { font-size: 2.5rem; }
    .nav-links { display: none; }
}

@media (max-width: 650px) {
    .case-study-grid {
        grid-template-columns: 1fr;
    }
}