/* ========================================
   CSS Custom Properties
   ======================================== */
:root {
    --color-bg-primary: #000000;
    --color-bg-secondary: #121212;
    --color-bg-card: #1a1a1a;
    --color-text-primary: #FFFFFF;
    --color-text-secondary: #cccccc;
    --color-text-muted: #999999;
    --color-accent: #61CE70;
    --color-accent-hover: #4fb85e;
    --color-gray: #32373c;
    --color-border: rgba(255, 255, 255, 0.33);
    --color-border-light: rgba(255, 255, 255, 0.1);
    --font-heading: 'Bricolage Grotesque', sans-serif;
    --font-body: 'Figtree', sans-serif;
    --container-max: 1400px;
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 16px;
    line-height: 1.7;
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--color-accent);
}

ul {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4.5rem); }
h2 { font-size: clamp(2rem, 4vw, 3.5rem); }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

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

/* ========================================
   Layout
   ======================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 20px;
    color: var(--color-text-primary);
}

.section-subtitle {
    text-align: center;
    color: var(--color-accent);
    font-size: 0.95rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #000000;
    padding: 14px 32px;
    border-radius: 50px;
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    color: #000000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(97, 206, 112, 0.3);
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
    background: transparent;
}

.header.scrolled {
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(20px);
    padding: 14px 0;
    border-bottom: 1px solid var(--color-border-light);
}

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

.logo-img {
    height: 36px;
    width: auto;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 36px;
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width 0.3s ease;
}

.nav-link:hover {
    color: var(--color-text-primary);
}

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

.nav-cta {
    padding: 10px 24px;
    font-size: 0.9rem;
}

.mobile-only {
    display: none;
}

/* Hamburger */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    z-index: 1001;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

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

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

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    padding-top: 180px;
    padding-bottom: 60px;
    text-align: center;
    background: radial-gradient(ellipse at center top, #0a1a0d 0%, var(--color-bg-primary) 70%);
}

.hero-title {
    margin-bottom: 20px;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.hero-tagline {
    color: var(--color-accent);
    font-size: 1rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 30px;
}

.hero-body {
    max-width: 700px;
    margin: 0 auto 50px;
    font-size: 1.15rem;
    line-height: 1.8;
    color: var(--color-text-secondary);
}

/* ========================================
   Marquee (Client Logos)
   ======================================== */
.marquee-wrapper {
    padding: 60px 0 20px;
    overflow: hidden;
    position: relative;
}

.marquee-wrapper::before,
.marquee-wrapper::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    width: 120px;
    z-index: 2;
    pointer-events: none;
}

.marquee-wrapper::before {
    left: 0;
    background: linear-gradient(to right, var(--color-bg-primary), transparent);
}

.marquee-wrapper::after {
    right: 0;
    background: linear-gradient(to left, var(--color-bg-primary), transparent);
}

.marquee {
    overflow: hidden;
}

.marquee-track {
    display: flex;
    gap: 50px;
    animation: marquee 40s linear infinite;
    width: max-content;
}

.client-logo {
    flex-shrink: 0;
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.4);
    white-space: nowrap;
    padding: 12px 24px;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-sm);
    letter-spacing: 1px;
    text-transform: uppercase;
}

@keyframes marquee {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

/* ========================================
   Services Section
   ======================================== */
.services {
    background-color: var(--color-bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 40px 30px;
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.5);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.card-icon {
    margin-bottom: 24px;
}

.card-title {
    margin-bottom: 14px;
    color: var(--color-text-primary);
}

.card-text {
    color: var(--color-text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 0;
}

.card-cta {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    background: linear-gradient(135deg, #0a1a0d, #121212);
    border-color: var(--color-accent);
}

.card-cta .card-title {
    font-size: 1.5rem;
}

.card-cta .card-text {
    margin-bottom: 24px;
}

/* ========================================
   Featured Work Section
   ======================================== */
.work {
    background-color: var(--color-bg-primary);
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.work-card {
    border-radius: var(--radius);
    overflow: hidden;
    transition: var(--transition);
}

.work-card:hover {
    transform: translateY(-4px);
}

.work-card-img {
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    border: 1px solid var(--color-border-light);
    overflow: hidden;
    position: relative;
    transition: var(--transition);
}

.work-card:hover .work-card-img {
    border-color: var(--color-accent);
}

.work-card-label {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.15);
    text-transform: uppercase;
    letter-spacing: 4px;
    transition: var(--transition);
}

.work-card:hover .work-card-label {
    color: rgba(97, 206, 112, 0.4);
}

.work-card-title {
    margin-top: 16px;
    font-size: 1.15rem;
    color: var(--color-text-primary);
}

.work-card-desc {
    margin-top: 6px;
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

/* Last two cards take up remaining space */
.work-grid .work-card:nth-child(4) {
    grid-column: 1 / 2;
}

.work-grid .work-card:nth-child(5) {
    grid-column: 2 / 3;
}

/* ========================================
   Testimonials Section
   ======================================== */
.testimonials {
    background-color: var(--color-bg-secondary);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

.testimonial-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 36px 30px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.testimonial-card:hover {
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-2px);
}

.quote-icon {
    flex-shrink: 0;
    margin-bottom: 16px;
    opacity: 0.7;
}

.testimonial-quote p {
    font-size: 0.95rem;
    line-height: 1.8;
    font-style: italic;
    color: var(--color-text-secondary);
    margin-bottom: 24px;
}

.testimonial-author {
    border-top: 1px solid var(--color-border-light);
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.testimonial-author strong {
    font-family: var(--font-heading);
    font-size: 1rem;
    color: var(--color-text-primary);
}

.testimonial-author span {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ========================================
   About Section
   ======================================== */
.about {
    background-color: var(--color-bg-primary);
}

.about-inner {
    display: grid;
    grid-template-columns: 1fr;
    gap: 60px;
    align-items: center;
}

.about-title {
    text-align: left;
}

.about-content .section-subtitle {
    text-align: left;
}

.about-photo-placeholder {
    width: 100%;
    aspect-ratio: 3 / 4;
    background: linear-gradient(135deg, var(--color-bg-card), var(--color-gray));
    border-radius: var(--radius);
    border: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.about-photo-placeholder span {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 800;
    color: rgba(255, 255, 255, 0.1);
}

.about-content p {
    font-size: 1rem;
    line-height: 1.8;
}

/* ========================================
   Why Rubicon Section
   ======================================== */
.why-rubicon {
    background: linear-gradient(180deg, var(--color-bg-secondary) 0%, var(--color-bg-primary) 100%);
}

.why-content {
    max-width: 800px;
    margin: 40px auto 0;
    text-align: center;
}

.why-content p {
    font-size: 1.1rem;
    line-height: 1.9;
}

/* ========================================
   Contact Section
   ======================================== */
.contact {
    background-color: var(--color-bg-primary);
    border-top: 1px solid var(--color-border-light);
}

.contact-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 50px;
    font-size: 1.1rem;
}

.contact-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 60px;
    align-items: start;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--color-text-secondary);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text-primary);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(97, 206, 112, 0.15);
}

.form-group input.error,
.form-group textarea.error {
    border-color: #e74c3c;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.btn-submit {
    width: 100%;
    justify-content: center;
    font-size: 1.05rem;
    padding: 16px 32px;
}

.contact-info {
    padding-top: 10px;
}

.contact-detail {
    margin-bottom: 32px;
}

.contact-detail h3 {
    color: var(--color-accent);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 8px;
}

.contact-detail a,
.contact-detail p {
    color: var(--color-text-secondary);
    font-size: 1rem;
    line-height: 1.7;
}

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

/* ========================================
   Footer
   ======================================== */
.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border-light);
    padding-top: 60px;
}

.footer-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-brand .logo-img {
    margin-bottom: 16px;
}

.footer-address {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

.footer-nav h4,
.footer-social h4 {
    font-family: var(--font-heading);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.footer-nav ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-nav a {
    font-size: 0.95rem;
    color: var(--color-text-secondary);
}

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

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: var(--transition);
}

.social-link:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(97, 206, 112, 0.1);
}

.footer-bottom {
    border-top: 1px solid var(--color-border-light);
    padding: 20px 0;
}

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

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

.footer-legal {
    display: flex;
    gap: 24px;
}

.footer-legal a {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.footer-legal a:hover {
    color: var(--color-accent);
}

/* ========================================
   Scroll Animations
   ======================================== */
.animate-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive: Tablet (768px - 1023px)
   ======================================== */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .work-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .work-grid .work-card:nth-child(5) {
        grid-column: auto;
    }

    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .about-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .about-photo-placeholder {
        max-width: 400px;
        margin: 0 auto;
    }

    .about-title,
    .about-content .section-subtitle {
        text-align: center;
    }

    .contact-inner {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* ========================================
   Responsive: Mobile (< 768px)
   ======================================== */
@media (max-width: 767px) {
    .section {
        padding: 60px 0;
    }

    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: var(--color-bg-secondary);
        border-left: 1px solid var(--color-border-light);
        padding: 100px 30px 30px;
        transition: right 0.3s ease;
        z-index: 999;
    }

    .nav.active {
        right: 0;
    }

    .nav-list {
        flex-direction: column;
        gap: 24px;
    }

    .nav-link {
        font-size: 1.1rem;
    }

    .nav-cta {
        display: none;
    }

    .mobile-only {
        display: block;
    }

    .hero {
        padding-top: 140px;
    }

    .hero-tagline {
        font-size: 0.85rem;
        letter-spacing: 2px;
    }

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

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

    .work-grid .work-card:nth-child(4),
    .work-grid .work-card:nth-child(5) {
        grid-column: auto;
    }

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

    .about-inner {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-bottom-inner {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }

    .client-logo {
        font-size: 0.85rem;
        padding: 8px 16px;
    }

    .marquee-track {
        gap: 30px;
    }
}

/* ========================================
   Responsive: Large Desktop (1366px+)
   ======================================== */
@media (min-width: 1366px) {
    .container {
        padding: 0 40px;
    }

    .section {
        padding: 120px 0;
    }
}

/* ========================================
   Responsive: Ultrawide (1700px+)
   ======================================== */
@media (min-width: 1700px) {
    :root {
        --container-max: 1600px;
    }

    body {
        font-size: 18px;
    }
}