/* ===================================================================
   DENAULD BROWN PERSONAL WEBSITE - CUSTOM STYLES
   Brand Colors: White (#ffffff), Red (#e2021a), Dark (#1b151a)
   =================================================================== */

/* --- 1. COLOR VARIABLES AND GLOBAL RESET --- */
:root {
    --color-bg-primary: #ffffff;        /* Main background: White */
    --color-bg-secondary: #F7F7F7;      /* Header/Footer/Subtle sections: Very Light Gray */
    --color-text-primary: #1b151a;      /* Main text: Dark */
    --color-text-secondary: #6B7280;    /* Secondary text: Medium Gray */
    --color-accent-red: #e2021a;        /* Accent: Red */
    --color-border: #D1D5DB;            /* Border: Light Gray */
}

body {
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-family: 'Inter', sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- 2. HEADER AND NAVIGATION STYLES --- */
.site-header {
    background-color: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 50; 
}

.site-logo {
    color: var(--color-accent-red);
    font-weight: 900;
    font-size: 1.5rem;
}

.site-title-tag {
    color: var(--color-text-primary);
    font-weight: 600;
    margin-left: 0.5rem;
    letter-spacing: -0.5px;
}

.nav-link {
    color: var(--color-text-secondary);
    font-weight: 500;
    transition: color 0.2s, border-bottom 0.2s;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
}

.nav-link:hover, 
.nav-link.is-active {
    color: var(--color-text-primary);
    border-bottom: 2px solid var(--color-accent-red);
}

/* --- 3. BUTTON STYLES (CTA) --- */
.btn-primary {
    background-color: var(--color-accent-red);
    color: var(--color-bg-primary);
    transition: background-color 0.2s, transform 0.2s;
    box-shadow: 0 4px 14px 0 rgba(226, 2, 26, 0.4);
    display: inline-block;
    font-weight: 600;
}

.btn-primary:hover {
    background-color: #f73145;
    transform: translateY(-1px);
    box-shadow: 0 6px 20px 0 rgba(226, 2, 26, 0.5);
}

/* --- 4. HERO SECTION TYPOGRAPHY --- */
.hero-subheader {
    color: var(--color-accent-red);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-size: 0.875rem;
}

.hero-headline {
    font-size: 3rem; 
    font-weight: 800;
    line-height: 1.1;
    margin-top: 1rem;
    margin-bottom: 2rem;
    color: var(--color-text-primary);
}

@media (min-width: 1024px) {
    .hero-headline {
        font-size: 4.5rem;
    }
}

.text-highlight {
    color: var(--color-accent-red);
}

/* --- 5. SOCIAL LINK STYLES --- */
.link-group-title {
    color: var(--color-accent-red);
    border-left: 3px solid var(--color-accent-red);
}

.social-card {
    transition: border-color 0.2s, box-shadow 0.2s;
}

.social-card:hover {
    border-color: var(--color-text-primary);
    box-shadow: 0 4px 12px rgba(27, 21, 26, 0.1);
}

.social-icon {
    color: var(--color-accent-red);
    transition: color 0.2s;
}

.social-card:hover .social-icon {
    color: var(--color-text-primary);
}

/* --- 6. EXPERTISE CARDS --- */
.expertise-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.expertise-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(27, 21, 26, 0.12);
}

/* --- 7. UTILITY CLASSES --- */
.max-w-7xl {
    max-width: 80rem; 
}

/* --- 8. SMOOTH SCROLLING --- */
html {
    scroll-behavior: smooth;
}

/* --- 9. FOCUS STYLES FOR ACCESSIBILITY --- */
a:focus,
button:focus {
    outline: 2px solid var(--color-accent-red);
    outline-offset: 2px;
}

/* --- 10. RESPONSIVE ADJUSTMENTS --- */
@media (max-width: 768px) {
    .hero-headline {
        font-size: 2rem;
    }
    
    .site-header {
        position: relative;
    }
}