:root {
    /* Senior PMO Color Palette - Indigo & Slate */
    --bg-primary: #ffffff;
    --bg-secondary: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --accent-primary: #1d4ed8;
    --accent-secondary: #3b82f6;
    --border-color: #e2e8f0;
    --card-bg: #ffffff;
    --header-bg: rgba(255, 255, 255, 0.82);
    --shadow: 0 4px 20px -5px rgba(15, 23, 42, 0.08);
    --transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

[data-theme="dark"] {
    --bg-primary: #020617;
    --bg-secondary: #0f172a;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --accent-primary: #60a5fa;
    --header-bg: rgba(2, 6, 23, 0.85);
    --border-color: #1e293b;
    --card-bg: #0f172a;
    --shadow: 0 10px 30px -10px rgba(0, 0, 0, 0.6);
}

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

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.7;
    transition: var(--transition);
}

.container { max-width: 1200px; margin: 0 auto; padding: 0 30px; }

h1, h2, h3, h4 { font-family: 'Outfit', sans-serif; font-weight: 800; letter-spacing: -0.03em; }

/* Glassmorphic Header */
header {
    background: var(--header-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1.2rem 0;
}

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

.logo {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--accent-primary);
    text-decoration: none;
    letter-spacing: -1px;
}

.nav-links { display: flex; gap: 2.5rem; list-style: none; }
.nav-links a {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    transition: var(--transition);
}
.nav-links a:hover { color: var(--accent-primary); transform: translateY(-2px); }

/* Premium Hero */
#hero {
    padding: 10rem 0 7rem;
    position: relative;
    overflow: hidden;
}

#hero::before {
    content: '';
    position: absolute;
    top: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, var(--accent-secondary) 0%, transparent 70%);
    opacity: 0.05;
    z-index: -1;
}

.hero-content { text-align: center; max-width: 900px; margin: 0 auto; }

.profile-image-container {
    width: 220px; height: 220px;
    margin: 0 auto 2.5rem;
    border-radius: 50%;
    padding: 8px;
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    box-shadow: var(--shadow);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

.hero-title { font-size: 4.5rem; margin-bottom: 0.8rem; background: linear-gradient(to right, var(--text-primary), var(--accent-primary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; }
.hero-subtitle { font-size: 1.6rem; color: var(--text-secondary); margin-bottom: 2.5rem; font-weight: 500; }

/* Sections */
.section-title { font-size: 3rem; margin-bottom: 4rem; text-align: center; color: var(--text-primary); }

.card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

/* Animations */
.reveal { opacity: 0; transform: translateY(40px); transition: var(--transition); }
.reveal.active { opacity: 1; transform: translateY(0); }

/* Experience Timeline */
.timeline-item { border-left: 3px solid var(--accent-primary); padding-bottom: 3rem; position: relative; padding-left: 3rem; }
.timeline-item:last-child { border-color: transparent; }
.timeline-item::before {
    content: '';
    position: absolute;
    left: -11px;
    top: 5px;
    width: 20px;
    height: 20px;
    background: var(--accent-primary);
    border-radius: 50%;
    border: 5px solid var(--bg-primary);
    box-shadow: 0 0 0 5px rgba(59, 130, 246, 0.1);
}

/* Icons */
.skill-card i { font-size: 2rem; color: var(--accent-primary); margin-bottom: 1.5rem; display: block; }

.card:hover {
    transform: translateY(-5px);
}

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

.skill-list {
    list-style: none;
    margin-top: 1rem;
}

.skill-list li {
    display: inline-block;
    background: var(--bg-secondary);
    padding: 4px 12px;
    border-radius: 6px;
    margin: 4px;
    font-size: 0.9rem;
    border: 1px solid var(--border-color);
}

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

.timeline-item {
    padding: 2rem 0;
    border-left: 2px solid var(--accent-primary);
    padding-left: 2rem;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -9px;
    top: 2.5rem;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    border: 4px solid var(--bg-primary);
}

.timeline-date {
    font-weight: 700;
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.timeline-role {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.timeline-company {
    color: var(--text-secondary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.timeline-content ul {
    list-style: none;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.timeline-content li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 20px;
}

.timeline-content li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
}

/* Contact Grid */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
}

.contact-item {
    text-align: center;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--accent-primary);
    margin-bottom: 1rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-title { font-size: 2.5rem; }
    .nav-links { display: none; }
    .section-title { font-size: 2rem; }
}

footer {
    padding: 3rem 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    color: var(--text-secondary);
}