/* ==========================================================================
   GB SIGNATURE — Website Styles
   Design: Refined luxury, confident minimalism
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables
   -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-black: #0a0a0a;
    --color-charcoal: #1a1a1a;
    --color-dark-gray: #2a2a2a;
    --color-gray: #666666;
    --color-light-gray: #999999;
    --color-off-white: #f5f5f0;
    --color-white: #ffffff;
    --color-accent: #c9a962; /* Muted gold */
    
    /* Typography */
    --font-display: 'Cormorant Garamond', Georgia, serif;
    --font-body: 'Manrope', -apple-system, sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    --space-2xl: 12rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-weight: 300;
    background-color: var(--color-black);
    color: var(--color-off-white);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.body--about {
    background-color: var(--color-off-white);
    color: var(--color-charcoal);
}

::selection {
    background-color: var(--color-accent);
    color: var(--color-black);
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

/* --------------------------------------------------------------------------
   Container
   -------------------------------------------------------------------------- */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.container--narrow {
    max-width: 800px;
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-md);
    background: linear-gradient(to bottom, rgba(10, 10, 10, 0.9) 0%, transparent 100%);
    transition: background var(--transition-medium);
}

.nav--light {
    background: linear-gradient(to bottom, rgba(245, 245, 240, 0.9) 0%, transparent 100%);
}

.nav-logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    transition: opacity var(--transition-fast);
}

.nav-logo:hover {
    opacity: 0.7;
}

.nav-links {
    display: flex;
    gap: var(--space-md);
    align-items: center;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    transition: opacity var(--transition-fast);
}

.nav-link:hover {
    opacity: 0.7;
}

.nav-link--active {
    opacity: 0.5;
}

.nav-link--cta {
    padding: 0.75rem 1.5rem;
    border: 1px solid currentColor;
    transition: all var(--transition-fast);
}

.nav-link--cta:hover {
    background-color: var(--color-off-white);
    color: var(--color-black);
    opacity: 1;
}

.nav--light .nav-link--cta:hover {
    background-color: var(--color-charcoal);
    color: var(--color-off-white);
}

/* --------------------------------------------------------------------------
   Hero — Landing Page
   -------------------------------------------------------------------------- */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--space-xl) var(--space-md);
    position: relative;
}

.hero-content {
    animation: fadeInUp 1s var(--transition-slow) both;
}

.hero-eyebrow {
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 7rem);
    font-weight: 300;
    letter-spacing: 0.05em;
    line-height: 1.1;
    margin-bottom: var(--space-sm);
}

.hero-subtitle {
    font-size: 1.125rem;
    font-weight: 300;
    color: var(--color-light-gray);
    letter-spacing: 0.02em;
}

.hero-scroll {
    position: absolute;
    bottom: var(--space-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    animation: fadeIn 1s 0.5s both;
}

.hero-scroll span {
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray);
}

.hero-scroll-line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--color-gray), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

/* --------------------------------------------------------------------------
   Hero — About Page
   -------------------------------------------------------------------------- */
.about-hero {
    min-height: 60vh;
    display: flex;
    align-items: flex-end;
    padding: var(--space-2xl) 0 var(--space-xl);
}

.about-hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 300;
    margin-bottom: var(--space-md);
    animation: fadeInUp 0.8s var(--transition-slow) both;
}

.about-hero-subtitle {
    font-size: 1.25rem;
    font-weight: 300;
    line-height: 1.8;
    max-width: 700px;
    color: var(--color-gray);
    animation: fadeInUp 0.8s 0.1s var(--transition-slow) both;
}

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

.section-title {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

body.body--about .section-title {
    color: var(--color-gray);
}

/* --------------------------------------------------------------------------
   Intro Section
   -------------------------------------------------------------------------- */
.section--intro {
    padding: var(--space-2xl) 0;
}

.intro-text {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 300;
    line-height: 1.6;
    max-width: 900px;
}

.intro-text--secondary {
    margin-top: var(--space-md);
    color: var(--color-light-gray);
}

/* --------------------------------------------------------------------------
   Services Section
   -------------------------------------------------------------------------- */
.section--services {
    background-color: var(--color-charcoal);
    padding: var(--space-xl) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.service-item {
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-dark-gray);
}

.service-number {
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 0.1em;
}

.service-name {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 400;
    margin: var(--space-sm) 0;
}

.service-desc {
    font-size: 0.9375rem;
    color: var(--color-light-gray);
    line-height: 1.6;
}

.services-note {
    font-style: italic;
    color: var(--color-light-gray);
    border-left: 2px solid var(--color-accent);
    padding-left: var(--space-md);
}

/* --------------------------------------------------------------------------
   Positioning Section
   -------------------------------------------------------------------------- */
.section--positioning {
    padding: var(--space-xl) 0;
}

.positioning-content {
    max-width: 600px;
}

.positioning-list {
    margin: var(--space-md) 0 var(--space-lg);
}

.positioning-list li {
    font-size: 1.125rem;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--color-dark-gray);
    padding-left: var(--space-md);
    position: relative;
}

.positioning-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 4px;
    background-color: var(--color-accent);
    border-radius: 50%;
}

.positioning-note {
    font-size: 0.9375rem;
    color: var(--color-gray);
    font-style: italic;
}

/* --------------------------------------------------------------------------
   Technical Section
   -------------------------------------------------------------------------- */
.section--technical {
    text-align: center;
    background-color: var(--color-charcoal);
}

.technical-intro {
    font-size: 1.125rem;
    color: var(--color-light-gray);
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.technical-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
}

.technical-item {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 400;
}

.technical-divider {
    color: var(--color-gray);
}

/* --------------------------------------------------------------------------
   Pricing Section
   -------------------------------------------------------------------------- */
.section--pricing {
    padding: var(--space-xl) 0;
}

.pricing-card {
    max-width: 500px;
    margin: 0 auto;
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    border: 1px solid var(--color-dark-gray);
}

.pricing-label {
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
}

.pricing-amount {
    font-family: var(--font-display);
    font-size: 4rem;
    font-weight: 300;
    letter-spacing: -0.02em;
}

.pricing-desc {
    font-size: 1rem;
    color: var(--color-light-gray);
    margin-top: var(--space-xs);
}

.pricing-details {
    margin: var(--space-lg) 0;
    padding: var(--space-md) 0;
    border-top: 1px solid var(--color-dark-gray);
    border-bottom: 1px solid var(--color-dark-gray);
}

.pricing-details p {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin: var(--space-xs) 0;
}

.pricing-note {
    font-size: 0.875rem;
    font-style: italic;
    color: var(--color-light-gray);
}

/* --------------------------------------------------------------------------
   Guarantee Section
   -------------------------------------------------------------------------- */
.section--guarantee {
    background-color: var(--color-charcoal);
    text-align: center;
}

.guarantee-content {
    max-width: 600px;
    margin: 0 auto;
}

.guarantee-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
}

.guarantee-text {
    font-size: 1.125rem;
    line-height: 1.8;
}

.guarantee-note {
    font-size: 0.875rem;
    color: var(--color-gray);
    margin-top: var(--space-md);
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.section--contact {
    text-align: center;
    padding: var(--space-2xl) 0;
}

.contact-intro {
    font-size: 1rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-md);
}

.contact-email {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 400;
    display: inline-block;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--color-accent);
    transition: all var(--transition-fast);
}

.contact-email:hover {
    color: var(--color-accent);
}

.contact-note {
    font-size: 0.875rem;
    color: var(--color-gray);
    max-width: 400px;
    margin: var(--space-md) auto var(--space-lg);
}

.contact-more {
    display: inline-block;
    font-size: 0.875rem;
    letter-spacing: 0.05em;
    color: var(--color-light-gray);
    transition: color var(--transition-fast);
}

.contact-more:hover {
    color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-dark-gray);
}

body.body--about .footer {
    border-top-color: #ddd;
}

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

.footer-logo {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: 0.1em;
}

.footer-tagline {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    color: var(--color-gray);
}

/* --------------------------------------------------------------------------
   About Page — Text Sections
   -------------------------------------------------------------------------- */
.section--about-text {
    padding: var(--space-lg) 0 var(--space-2xl);
}

.about-block {
    margin-bottom: var(--space-xl);
}

.about-heading {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 400;
    margin-bottom: var(--space-md);
    color: var(--color-charcoal);
}

.about-paragraph {
    font-size: 1.0625rem;
    line-height: 1.9;
    margin-bottom: var(--space-md);
    color: var(--color-gray);
}

.about-paragraph--emphasis {
    font-style: italic;
    color: var(--color-charcoal);
}

.about-paragraph--small {
    font-size: 0.9375rem;
    color: var(--color-light-gray);
}

.about-quote {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 300;
    font-style: italic;
    line-height: 1.6;
    color: var(--color-charcoal);
    padding: var(--space-md) 0 var(--space-md) var(--space-lg);
    border-left: 2px solid var(--color-accent);
    margin: var(--space-lg) 0;
}

/* --------------------------------------------------------------------------
   About Page — Value Section
   -------------------------------------------------------------------------- */
.section--value {
    background-color: var(--color-charcoal);
    color: var(--color-off-white);
    padding: var(--space-xl) 0;
}

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

.value-heading {
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

.value-paragraph {
    font-size: 1.125rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-sm);
}

.value-divider {
    width: 60px;
    height: 1px;
    background-color: var(--color-dark-gray);
    margin: var(--space-lg) auto;
}

.value-quotes {
    margin: var(--space-lg) 0;
}

.value-quote {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 300;
    font-style: italic;
    line-height: 1.6;
    color: var(--color-off-white);
    margin: var(--space-md) 0;
}

.value-paragraph--conclusion {
    font-style: italic;
    color: var(--color-off-white);
    margin-top: var(--space-lg);
}

/* --------------------------------------------------------------------------
   About Page — Integrity Section
   -------------------------------------------------------------------------- */
.section--integrity {
    padding: var(--space-xl) 0;
}

.integrity-block {
    padding-left: var(--space-lg);
    border-left: 2px solid var(--color-accent);
}

/* --------------------------------------------------------------------------
   About Page — Closing Section
   -------------------------------------------------------------------------- */
.section--closing {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-2xl);
    background-color: var(--color-charcoal);
    color: var(--color-off-white);
}

.closing-text {
    font-size: 1.25rem;
    color: var(--color-light-gray);
    margin-bottom: var(--space-sm);
}

.closing-text--large {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 300;
    color: var(--color-off-white);
    margin-bottom: var(--space-lg);
}

.closing-cta {
    display: inline-block;
    font-size: 0.875rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 1rem 2rem;
    border: 1px solid var(--color-off-white);
    transition: all var(--transition-fast);
}

.closing-cta:hover {
    background-color: var(--color-off-white);
    color: var(--color-charcoal);
}

/* --------------------------------------------------------------------------
   Animations
   -------------------------------------------------------------------------- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Scroll-triggered animations */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s var(--transition-slow);
}

.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
    :root {
        --space-lg: 3rem;
        --space-xl: 5rem;
        --space-2xl: 7rem;
    }
    
    .nav {
        padding: var(--space-sm);
    }
    
    .nav-links {
        gap: var(--space-sm);
    }
    
    .nav-link--cta {
        padding: 0.5rem 1rem;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .technical-list {
        flex-direction: column;
        gap: var(--space-sm);
    }
    
    .technical-divider {
        display: none;
    }
    
    .pricing-card {
        padding: var(--space-lg) var(--space-md);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--space-sm);
        text-align: center;
    }
    
    .about-quote,
    .integrity-block {
        padding-left: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-eyebrow {
        font-size: 0.625rem;
    }
    
    .pricing-amount {
        font-size: 3rem;
    }
    
    .value-quote {
        font-size: 1.25rem;
    }
}