/* Corporate Executive Reset & Variables */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-main: #f8fafc;        /* Clean slate background */
    --panel-bg: #ffffff;       /* Pure white for financial blocks */
    --text-dark: #0f172a;      /* Deep navy/charcoal for premium readability */
    --text-muted: #475569;     /* Slate gray for secondary details */
    --accent-corporate: #1e3a8a; /* Trustworthy deep navy blue */
    --accent-positive: #047857;  /* Subtle forest green for ROI/metrics */
    --border-light: #e2e8f0;    /* Crisp light divider line */
    --sans-font: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg-main);
    color: var(--text-dark);
    font-family: var(--sans-font);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

/* Top Navigation */
nav {
    position: fixed;
    top: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 8%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(8px);
    z-index: 1000;
    border-bottom: 1px solid var(--border-light);
}

.logo {
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--accent-corporate);
    text-transform: uppercase;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.nav-links a:hover {
    color: var(--accent-corporate);
}

/* Executive Summary / Hero */
header {
    min-height: 85vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 8rem 8% 4rem 8%;
    background: linear-gradient(135deg, #ffffff 0%, #f1f5f9 100%);
    border-bottom: 1px solid var(--border-light);
}

.title-badge {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent-corporate);
    font-weight: 700;
    margin-bottom: 1rem;
}

header h1 {
    font-size: 3rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-dark);
    max-width: 800px;
    margin-bottom: 1.5rem;
}

header p {
    font-size: 1.2rem;
    color: var(--text-muted);
    max-width: 650px;
    margin-bottom: 3rem;
}

/* Performance Data Grid */
.financial-metrics {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    max-width: 1000px;
}

.metric-tile {
    background: var(--panel-bg);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.metric-val {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-positive);
    margin-bottom: 0.25rem;
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-dark);
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.metric-desc {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Main Section Container */
.container {
    padding: 6rem 8%;
}

h2 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.section-lead {
    color: var(--text-muted);
    margin-bottom: 3rem;
    font-size: 1rem;
}

/* Case Studies / Project Ledgers */
.ledger-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.ledger-row {
    background: var(--panel-bg);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    padding: 2rem;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
    transition: box-shadow 0.3s ease;
}

.ledger-row:hover {
    box-shadow: 0 10px 25px rgba(15, 23, 42, 0.05);
}

.ledger-meta {
    border-right: 2px solid var(--bg-main);
    padding-right: 1rem;
}

.ledger-scope {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.ledger-impact {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-positive);
}

.ledger-content h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

.ledger-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
}

/* Competency Badges */
.skill-group {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.skill-badge {
    background: var(--bg-main);
    color: var(--text-dark);
    font-size: 0.8rem;
    font-weight: 500;
    padding: 0.3rem 0.8rem;
    border-radius: 4px;
    border: 1px solid var(--border-light);
}

/* Contact / CTA Section */
.cta-box {
    background: var(--accent-corporate);
    color: #ffffff;
    padding: 4rem 3rem;
    border-radius: 12px;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.cta-box h2 {
    color: #ffffff;
    margin-bottom: 1rem;
}

.cta-box p {
    color: #93c5fd;
    max-width: 500px;
    margin: 0 auto 2rem auto;
}

.btn-corporate {
    display: inline-block;
    padding: 0.75rem 2rem;
    background: #ffffff;
    color: var(--accent-corporate);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 4px;
    transition: background 0.2s;
}

.btn-corporate:hover {
    background: #f1f5f9;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem;
    font-size: 0.85rem;
    color: var(--text-muted);
    border-top: 1px solid var(--border-light);
    margin-top: 4rem;
}

@media (max-width: 768px) {
    header h1 { font-size: 2.2rem; }
    .ledger-row { grid-template-columns: 1fr; gap: 1rem; }
    .ledger-meta { border-right: none; border-bottom: 2px solid var(--bg-main); padding-bottom: 1rem; }
    .nav-links { display: none; }
}