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

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    /* Primary site background – deep cool black */
    background-color: #0D0F12;
    color: #d0d0d0;
    margin: 0;
}

a {
    /* Action accent for links */
    color: #00D4FF;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

header {
    /* Secondary surface for header */
    background-color: #161B22;
    padding: 1rem 1.5rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

nav .logo {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 1rem;
}

nav ul li a {
    color: #ffffff;
    padding: 0.5rem 0.75rem;
    border-radius: 4px;
    transition: background-color 0.2s;
}

nav ul li a:hover,
nav ul li a.active {
    /* Confidence accent for nav hover */
    background-color: #1F2937;
}

main {
    max-width: 1100px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

section.hero {
    text-align: center;
    padding: 4rem 0;
}

section.hero h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #ffffff;
    font-weight: 600;
}

section.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    font-weight: 300;
    line-height: 1.7;
}

.button {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    /* Action accent for buttons */
    background-color: #00D4FF;
    color: #0D0F12;
    border-radius: 4px;
    font-weight: 600;
    transition: background-color 0.2s;
}

.button:hover {
    background-color: #00bce6;
}

section.intro, section.pillars, section.page-header, section.service-list, section.content, section.contact-info {
    margin-bottom: 2rem;
}

section.intro h2,
section.pillars h3,
section.page-header h1,
section.service-list h2,
section.contact-info h2 {
    color: #ffffff;
    margin-bottom: 0.5rem;
}

section.pillars {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 1.5rem;
}

.pillar {
    background-color: #161B22;
    padding: 1.5rem;
    border-radius: 4px;
    flex: 1 1 calc(33% - 1rem);
}

.pillar h3 {
    margin-bottom: 0.5rem;
}

.pillar p {
    font-size: 0.95rem;
}

section.service-list article {
    background-color: #161B22;
    padding: 1.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

section.service-list article h2 {
    margin-bottom: 0.5rem;
}

footer {
    background-color: #161B22;
    color: #8fa8b5;
    text-align: center;
    padding: 1rem;
    margin-top: 2rem;
}

/* Mission Protocol timeline styles */
section.protocol {
    margin: 2rem 0;
}

/* Each phase card */
.phase {
    background-color: #161B22;
    padding: 1.5rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

/* Phase title styling with wider letter spacing */
.phase-title {
    font-weight: 600;
    /* Slightly wider tracking for tactical dossier feel */
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

@media (max-width: 768px) {
    nav ul {
        gap: 0.5rem;
    }
    .pillar {
        flex: 1 1 100%;
    }
}