/* ========================================
   Serra & Associates - Professional Website
   ======================================== */

/* Reset */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Custom Properties */
:root {
    /* Professional navy palette */
    --color-white: #ffffff;
    --color-light: #f7f8fa;
    --color-silver: #e9ecef;
    --color-gray: #8d95a0;
    --color-slate: #5a6270;
    --color-charcoal: #2d3138;
    --color-dark: #1a1d22;

    /* Accent - deep navy */
    --color-navy: #002D62;
    --color-navy-light: #003d85;

    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Raleway', -apple-system, sans-serif;

    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 6rem;
    --space-2xl: 10rem;

    /* Layout */
    --max-width: 1100px;
    --container-padding: 2rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.7;
    color: var(--color-charcoal);
    background-color: var(--color-white);
    font-size: 17px;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: var(--space-sm) 0;
    transition: background-color 0.3s ease, box-shadow 0.3s ease;
}

.nav.scrolled {
    background-color: rgba(255, 255, 255, 0.97);
    box-shadow: 0 1px 20px rgba(0, 0, 0, 0.06);
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-navy);
    text-decoration: none;
    letter-spacing: 0.05em;
    flex: 1;
}

/* Desktop: nav-menu is transparent, children lay out in nav-container */
.nav-menu {
    display: contents;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--space-md);
    padding: 0;
    margin: 0 auto;
    order: 1;
}

.nav-actions {
    order: 2;
    flex: 1;
    justify-content: flex-end;
}

.nav-links a {
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-slate);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.nav-actions {
    display: flex;
    list-style: none;
    gap: var(--space-md);
    margin: 0;
    margin-left: auto;
    padding: 0;
}

.nav-actions li {
    list-style: none;
}

.nav-actions a,
.nav-actions a:link,
.nav-actions a:visited {
    font-size: 0.85rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--color-navy);
    text-decoration: none;
    transition: color 0.3s ease;
}

.nav-actions a:hover {
    color: var(--color-navy-light);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-charcoal);
    transition: all 0.3s ease;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(160deg, var(--color-white) 0%, var(--color-light) 50%, var(--color-silver) 100%);
    overflow: hidden;
}

.hero-gradient {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(0, 45, 98, 0.04) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 80%, rgba(0, 45, 98, 0.02) 0%, transparent 40%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    padding: var(--space-lg);
    position: relative;
    z-index: 1;
}

.logo-mark {
    margin-bottom: var(--space-md);
}

.hero-icon {
    width: 100px;
    height: 100px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 400;
    letter-spacing: 0.02em;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
}

.hero-tagline {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-style: italic;
    color: var(--color-slate);
    margin-bottom: var(--space-xl);
}

.scroll-indicator {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    color: var(--color-gray);
    text-decoration: none;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    transition: color 0.3s ease;
}

.scroll-indicator:hover {
    color: var(--color-navy);
}

.scroll-indicator svg {
    width: 20px;
    height: 20px;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

/* ========================================
   Sections
   ======================================== */
.section {
    padding: var(--space-2xl) 0;
}

.section-alt {
    background-color: var(--color-light);
}

.section-label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-navy);
    margin-bottom: var(--space-sm);
    text-align: center;
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 400;
    color: var(--color-dark);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.content-block {
    max-width: 800px;
    margin: 0 auto;
}

.intro {
    font-size: 1.2rem;
    line-height: 1.8;
    color: var(--color-slate);
    text-align: center;
    margin-bottom: var(--space-lg);
}

/* Values Grid */
.values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.value {
    text-align: center;
    padding: var(--space-md);
}

.value h3 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--color-navy);
    margin-bottom: var(--space-xs);
}

.value p {
    color: var(--color-slate);
    font-size: 0.95rem;
}

/* ========================================
   Services
   ======================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    max-width: 1000px;
    margin: 0 auto;
}

.service-card {
    background: var(--color-white);
    padding: var(--space-lg) var(--space-md);
    border: 1px solid var(--color-silver);
    position: relative;
    transition: all 0.4s ease;
}

.service-card:hover {
    border-color: var(--color-navy-light);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
}

.service-icon {
    margin-bottom: var(--space-sm);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    color: var(--color-navy);
}

.service-card h3 {
    font-family: var(--font-display);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--color-dark);
    margin-bottom: var(--space-sm);
}

.service-card p {
    color: var(--color-slate);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ========================================
   Industries
   ======================================== */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    max-width: 1000px;
    margin: 0 auto;
}

.industry-card {
    text-align: center;
    padding: var(--space-lg) var(--space-md);
    border: 1px solid var(--color-silver);
    background: var(--color-light);
    transition: all 0.3s ease;
}

.industry-card:hover {
    border-color: var(--color-navy-light);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.04);
}

.industry-card h3 {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 500;
    color: var(--color-navy);
    margin-bottom: var(--space-xs);
}

.industry-card p {
    color: var(--color-slate);
    font-size: 0.9rem;
    line-height: 1.7;
}

/* ========================================
   Client Center
   ======================================== */
.client-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
    max-width: 1000px;
    margin: 0 auto;
}

.client-link {
    display: flex;
    flex-direction: column;
    padding: var(--space-md) var(--space-md);
    background: var(--color-white);
    border: 1px solid var(--color-silver);
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.client-link:hover {
    background: var(--color-navy);
    border-color: var(--color-navy);
}

.client-link-label {
    font-size: 0.7rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray);
    margin-bottom: var(--space-xs);
    transition: color 0.3s ease;
}

.client-link:hover .client-link-label {
    color: rgba(255, 255, 255, 0.6);
}

.client-link-name {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-dark);
    transition: color 0.3s ease;
}

.client-link:hover .client-link-name {
    color: var(--color-white);
}

.client-link-arrow {
    position: absolute;
    top: var(--space-sm);
    right: var(--space-sm);
    color: var(--color-silver);
    transition: color 0.3s ease;
}

.client-link-arrow svg {
    width: 18px;
    height: 18px;
}

.client-link:hover .client-link-arrow {
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Contact
   ======================================== */
.contact-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.contact-details {
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.contact-link {
    display: block;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-light);
    border: 1px solid var(--color-silver);
    text-decoration: none;
    transition: all 0.3s ease;
}

.contact-link:hover {
    background: var(--color-navy);
    border-color: var(--color-navy);
}

.contact-link-static {
    cursor: default;
}

.contact-link-static:hover {
    background: var(--color-light);
    border-color: var(--color-silver);
}

.contact-label {
    display: block;
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray);
    margin-bottom: var(--space-xs);
    transition: color 0.3s ease;
}

.contact-link:hover .contact-label {
    color: rgba(255, 255, 255, 0.7);
}

.contact-link-static:hover .contact-label {
    color: var(--color-gray);
}

.contact-value {
    font-family: var(--font-display);
    font-size: 1.3rem;
    color: var(--color-dark);
    transition: color 0.3s ease;
}

.contact-link:hover .contact-value {
    color: var(--color-white);
}

.contact-link-static:hover .contact-value {
    color: var(--color-dark);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: var(--space-lg) 0;
    background: var(--color-dark);
    color: var(--color-gray);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-white);
}

.monogram-small {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-navy-light);
    letter-spacing: 0.05em;
    padding: 0.2em 0.35em;
    border: 1px solid var(--color-navy-light);
}

.footer-logo span:last-child {
    font-family: var(--font-display);
    font-size: 1.1rem;
    letter-spacing: 0.02em;
}

.footer-nav {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

.footer-nav a {
    font-size: 0.85rem;
    color: var(--color-gray);
    text-decoration: none;
    letter-spacing: 0.05em;
    transition: color 0.3s ease;
}

.footer-nav a:hover {
    color: var(--color-white);
}

.copyright {
    font-size: 0.85rem;
    color: var(--color-slate);
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 768px) {
    :root {
        --container-padding: 1.5rem;
    }

    .section {
        padding: var(--space-xl) 0;
    }

    .values {
        grid-template-columns: 1fr;
    }

    .services-grid,
    .industries-grid,
    .client-grid {
        grid-template-columns: 1fr;
    }

    .contact-details {
        gap: var(--space-sm);
    }

    .contact-link {
        padding: var(--space-md);
    }

    /* Mobile nav */
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(255, 255, 255, 0.98);
        padding: var(--space-md) var(--container-padding);
        gap: var(--space-sm);
        box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-links,
    .nav-actions {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-sm);
        margin: 0;
    }

    .nav-actions {
        order: 1;
        padding-bottom: var(--space-sm);
        border-bottom: 1px solid var(--color-silver);
    }

    .nav-links {
        order: 2;
    }

    .nav-links a,
    .nav-actions a {
        padding: var(--space-xs) 0;
    }

    .footer-nav {
        gap: var(--space-sm);
    }
}

@media (max-width: 480px) {
    .hero-content {
        padding: var(--space-md);
    }

    .monogram {
        font-size: 2.2rem;
    }
}