/* ==========================================================================
   Precision Books - Brand Style CSS
   Colors: Trust Navy #003366, Action Blue #0056B3, Paper White #FFFFFF, System Grey #F2F2F2
   Fonts: Montserrat (headings/body), Libre Baskerville (accent/brand)
   ========================================================================== */

/* CSS Variables */
:root {
    --trust-navy: #033a84;
    --action-blue: #0056B3;
    --paper-white: #FFFFFF;
    --system-grey: #F2F2F2;
    --text-dark: #333333;
    --text-light: #666666;
    --shadow: 0 4px 6px rgba(0, 51, 102, 0.1);
    --shadow-hover: 0 8px 25px rgba(0, 51, 102, 0.15);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Montserrat', sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--paper-white);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 700;
    line-height: 1.2;
    color: var(--trust-navy);
}

h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

a {
    color: var(--action-blue);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--trust-navy);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.section {
    padding: 5rem 0;
}

.section-subtitle {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 3rem;
    color: var(--text-light);
}

.bg-light {
    background-color: var(--system-grey);
}

.bg-navy {
    background-color: var(--trust-navy);
}

.bg-navy h2,
.bg-navy p,
.bg-navy a {
    color: var(--paper-white);
}

/* Navigation */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    padding: 1rem 0;
    transition: var(--transition);
}

nav.scrolled {
    background-color: var(--paper-white);
    box-shadow: var(--shadow);
    padding: 0.5rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 90px;
    width: auto;
    transition: var(--transition);
}

/* Logo swap on scroll */
.logo .logo-blue {
    display: block;
}

.logo .logo-white {
    display: none;
}

nav.scrolled .logo .logo-blue {
    display: none;
}

nav.scrolled .logo .logo-white {
    display: block;
}

nav.scrolled .logo img {
    height: 40px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    font-weight: 600;
    color: var(--paper-white);
    padding: 0.5rem 0;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--action-blue);
    transition: var(--transition);
}

.nav-links a:hover::after {
    width: 100%;
}

/* Mobile Navigation Toggle */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--paper-white);
    transition: var(--transition);
}

nav.scrolled .nav-toggle span {
    background-color: var(--trust-navy);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--trust-navy) 0%, var(--action-blue) 100%);
    padding: 8rem 1.5rem 4rem;
}

.hero h1 {
    color: var(--paper-white);
    margin-bottom: 1.5rem;
}

.hero h1 span {
    font-family: 'Libre Baskerville', serif;
    font-weight: 400;
    font-style: italic;
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Button */
.btn {
    display: inline-block;
    background-color: var(--paper-white);
    color: var(--trust-navy);
    padding: 1rem 2.5rem;
    border-radius: 4px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    border: 2px solid var(--paper-white);
}

.btn:hover {
    background-color: transparent;
    color: var(--paper-white);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-text h2 {
    font-family: 'Libre Baskerville', serif;
}

.about-values {
    display: grid;
    gap: 1.5rem;
}

.value-item {
    background-color: var(--paper-white);
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.value-icon {
    width: 50px;
    height: 50px;
    background-color: var(--system-grey);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.value-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--action-blue);
}

.value-item h3 {
    color: var(--trust-navy);
}

.value-item p {
    margin-bottom: 0;
    font-size: 0.9rem;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.service-card {
    background-color: var(--paper-white);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.service-icon {
    width: 70px;
    height: 70px;
    background-color: var(--system-grey);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background-color: var(--action-blue);
}

.service-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--action-blue);
    transition: var(--transition);
}

.service-card:hover .service-icon svg {
    stroke: var(--paper-white);
}

.service-card h3 {
    color: var(--trust-navy);
}

.service-card p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* Why Us Section */
.why-us-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 3rem;
}

.why-us-card {
    position: relative;
    padding: 2rem;
    padding-top: 3rem;
}

.why-number {
    font-family: 'Libre Baskerville', serif;
    font-size: 4rem;
    font-weight: 700;
    color: var(--system-grey);
    position: absolute;
    top: 0;
    left: 1.5rem;
    line-height: 1;
}

.why-us-card h3 {
    color: var(--action-blue);
    font-size: 1.35rem;
    margin-bottom: 1rem;
}

.why-us-card p {
    margin-bottom: 0;
}

/* Contact Section */
.contact-intro {
    max-width: 500px;
    margin: 0 auto 3rem;
    opacity: 0.9;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 2rem;
    border-radius: 8px;
    transition: var(--transition);
}

.contact-card:hover {
    background-color: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.contact-icon {
    width: 60px;
    height: 60px;
    background-color: var(--action-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
}

.contact-icon svg {
    width: 28px;
    height: 28px;
    stroke: var(--paper-white);
}

.contact-card h3 {
    color: var(--paper-white);
    margin-bottom: 0.5rem;
}

.contact-card a {
    color: var(--paper-white);
    font-size: 1.1rem;
    font-weight: 600;
}

.contact-card a:hover {
    color: var(--action-blue);
}

/* Footer */
footer {
    background-color: var(--trust-navy);
    padding: 2rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-logo {
    height: 90px;
    width: auto;
    margin-bottom: 1rem;
}

footer p {
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0;
    font-size: 0.9rem;
}

.built-by {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.built-by span {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.75rem;
}

.built-by a {
    display: inline-flex;
    align-items: center;
    opacity: 0.6;
    transition: var(--transition);
}

.built-by a:hover {
    opacity: 1;
}

.built-by img {
    height: 20px;
    width: auto;
}

/* Responsive Design */
@media (max-width: 992px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 3rem;
    }

    .services-grid,
    .why-us-grid,
    .contact-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--paper-white);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        box-shadow: var(--shadow);
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px);
        transition: var(--transition);
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0);
    }

    .nav-links a {
        color: var(--trust-navy);
        display: block;
        padding: 1rem;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .services-grid,
    .contact-cards {
        grid-template-columns: 1fr;
    }

    .why-us-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .why-us-card {
        padding-left: 5rem;
    }

    .why-number {
        font-size: 3rem;
    }

    .section {
        padding: 3rem 0;
    }

    .hero {
        padding: 6rem 1rem 3rem;
    }
}

@media (max-width: 480px) {
    .btn {
        padding: 0.875rem 2rem;
        font-size: 0.9rem;
    }

    .value-item,
    .service-card,
    .contact-card {
        padding: 1.5rem;
    }
}