/* ============================================
   XTENT SOLUTIONS - CLEAN BRUTALIST DESIGN
   Refined. Professional. Confident.
   ============================================ */

:root {
    /* Color Palette - High Contrast Minimal */
    --white: #FFFFFF;
    --off-white: #FAFAFA;
    --light-gray: #F0F0F0;
    --mid-gray: #888888;
    --dark-gray: #333333;
    --black: #000000;
    --accent: #C9A227; /* Warm gold/amber */
    --accent-light: #E8D48A;

    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-body: 'Instrument Sans', sans-serif;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 1rem;
    --space-4: 1.5rem;
    --space-5: 2rem;
    --space-6: 3rem;
    --space-7: 4rem;
    --space-8: 6rem;
    --space-9: 8rem;
    --space-10: 12rem;

    /* Layout */
    --max-width: 1200px;
    --border: 1px solid var(--black);
    --border-light: 1px solid var(--light-gray);

    /* Transitions */
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --duration: 0.3s;
}

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

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

body {
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.6;
    color: var(--black);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 400;
    line-height: 1;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.section-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--mid-gray);
    margin-bottom: var(--space-3);
}

.section-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: var(--space-4);
}

.section-desc {
    font-size: 1.125rem;
    color: var(--dark-gray);
    max-width: 600px;
    line-height: 1.7;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.section-header {
    margin-bottom: var(--space-8);
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-6);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border: var(--border);
    background: transparent;
    cursor: pointer;
    transition: all var(--duration) var(--ease);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--black);
    transform: translateY(100%);
    transition: transform var(--duration) var(--ease);
    z-index: -1;
}

.btn:hover::before {
    transform: translateY(0);
}

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

.btn-primary {
    background: var(--black);
    color: var(--white);
}

.btn-primary::before {
    background: var(--accent);
}

.btn-primary:hover {
    color: var(--black);
    border-color: var(--accent);
}

.btn-ghost {
    background: transparent;
    color: var(--black);
}

.btn-full {
    width: 100%;
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--white);
    border-bottom: var(--border);
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 80px;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-5);
}

.logo {
    font-family: var(--font-display);
    font-size: 1.75rem;
    letter-spacing: 0.1em;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    gap: var(--space-6);
}

.nav-links a {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    position: relative;
    padding: var(--space-2) 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--black);
    transition: width var(--duration) var(--ease);
}

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

.nav-cta {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    padding: var(--space-3) var(--space-5);
    border: var(--border);
    transition: all var(--duration) var(--ease);
}

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    width: 32px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    position: relative;
}

.menu-toggle span {
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--black);
    top: 50%;
    transform: translateY(-50%);
    transition: all var(--duration) var(--ease);
}

.menu-toggle::before,
.menu-toggle::after {
    content: '';
    position: absolute;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--black);
    transition: all var(--duration) var(--ease);
}

.menu-toggle::before { top: 0; }
.menu-toggle::after { bottom: 0; }

.menu-toggle.active span { opacity: 0; }
.menu-toggle.active::before { top: 50%; transform: rotate(45deg); }
.menu-toggle.active::after { bottom: 50%; transform: rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
    display: none;
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--white);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--duration) var(--ease);
}

.mobile-menu.active {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-inner {
    display: flex;
    flex-direction: column;
    padding: var(--space-6) var(--space-5);
}

.mobile-menu a {
    font-family: var(--font-display);
    font-size: 3rem;
    padding: var(--space-3) 0;
    border-bottom: var(--border);
}

.mobile-cta {
    margin-top: var(--space-6);
    font-family: var(--font-body) !important;
    font-size: 1rem !important;
    text-align: center;
    padding: var(--space-4) !important;
    border: var(--border) !important;
}

/* ============================================
   HERO
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: calc(80px + var(--space-8)) var(--space-5) var(--space-8);
    max-width: var(--max-width);
    margin: 0 auto;
}

.hero-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--mid-gray);
    margin-bottom: var(--space-4);
}

.hero-title {
    font-size: clamp(3.5rem, 10vw, 9rem);
    line-height: 0.95;
    margin-bottom: var(--space-6);
}

.hero-title-accent {
    color: var(--accent);
}

.hero-desc {
    font-size: 1.25rem;
    color: var(--dark-gray);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: var(--space-7);
}

.hero-actions {
    display: flex;
    gap: var(--space-4);
    margin-bottom: var(--space-9);
}

.hero-metrics {
    display: flex;
    gap: var(--space-8);
    padding-top: var(--space-6);
    border-top: var(--border);
}

.metric {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.metric-value {
    font-family: var(--font-display);
    font-size: 3.5rem;
    line-height: 1;
}

.metric-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--mid-gray);
}

/* ============================================
   TICKER
   ============================================ */
.ticker {
    border-top: var(--border);
    border-bottom: var(--border);
    padding: var(--space-4) 0;
    overflow: hidden;
    background: var(--black);
}

.ticker-track {
    display: flex;
    gap: var(--space-8);
    animation: ticker 30s linear infinite;
    width: max-content;
}

.ticker-track span {
    font-family: var(--font-display);
    font-size: 1.25rem;
    letter-spacing: 0.1em;
    color: var(--white);
    white-space: nowrap;
}

.ticker-track span::after {
    content: '—';
    margin-left: var(--space-8);
    color: var(--accent);
}

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

/* ============================================
   SERVICES
   ============================================ */
.services {
    padding: var(--space-10) 0;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
}

.service {
    padding: var(--space-7);
    border: var(--border);
    transition: all var(--duration) var(--ease);
    position: relative;
}

.service::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--light-gray);
    opacity: 0;
    transition: opacity var(--duration) var(--ease);
    z-index: -1;
}

.service:hover::before {
    opacity: 1;
}

.service-featured {
    background: var(--black);
    color: var(--white);
}

.service-featured::before {
    background: var(--dark-gray);
}

.service-num {
    font-family: var(--font-display);
    font-size: 5rem;
    line-height: 1;
    opacity: 0.1;
    display: block;
    margin-bottom: var(--space-4);
}

.service-title {
    font-size: 1.75rem;
    margin-bottom: var(--space-4);
}

.service-desc {
    color: var(--dark-gray);
    margin-bottom: var(--space-5);
    line-height: 1.7;
}

.service-featured .service-desc {
    color: var(--mid-gray);
}

.service-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.service-list li {
    font-size: 0.875rem;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.service-list li::before {
    content: '';
    width: 16px;
    height: 1px;
    background: currentColor;
    opacity: 0.3;
}

/* ============================================
   PROCESS
   ============================================ */
.process {
    padding: var(--space-10) 0;
    background: var(--off-white);
    border-top: var(--border);
    border-bottom: var(--border);
}

.process-steps {
    display: grid;
    gap: 0;
}

.process-step {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: var(--space-6);
    padding: var(--space-6) 0;
    border-bottom: var(--border);
    transition: all var(--duration) var(--ease);
}

.process-step:last-child {
    border-bottom: none;
}

.process-step:hover {
    padding-left: var(--space-4);
}

.step-number {
    font-family: var(--font-display);
    font-size: 4rem;
    line-height: 1;
    color: var(--accent);
}

.step-content h3 {
    font-size: 2rem;
    margin-bottom: var(--space-3);
}

.step-content p {
    color: var(--dark-gray);
    max-width: 600px;
    line-height: 1.7;
}

/* ============================================
   WORK / CASE STUDIES
   ============================================ */
.work {
    padding: var(--space-10) 0;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-5);
}

.case {
    border: var(--border);
    padding: var(--space-6);
    transition: all var(--duration) var(--ease);
    position: relative;
}

.case::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 4px;
    background: var(--accent);
    transition: width var(--duration) var(--ease);
}

.case:hover::after {
    width: 100%;
}

.case-large {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    align-items: center;
}

.case-meta {
    margin-bottom: var(--space-4);
}

.case-tag {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    padding: var(--space-2) var(--space-3);
    border: var(--border);
}

.case-title {
    font-size: 1.75rem;
    margin-bottom: var(--space-3);
}

.case-large .case-title {
    font-size: 2.5rem;
}

.case-desc {
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: var(--space-5);
}

.case-stats {
    display: flex;
    gap: var(--space-6);
    padding-top: var(--space-4);
    border-top: var(--border-light);
}

.case-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2.5rem;
    line-height: 1;
    color: var(--accent);
}

.stat-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--mid-gray);
}

/* ============================================
   PARTNERS
   ============================================ */
.partners {
    padding: var(--space-8) 0;
    border-top: var(--border);
    border-bottom: var(--border);
}

.partners-label {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    color: var(--mid-gray);
    margin-bottom: var(--space-6);
}

.partners-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--space-8);
    flex-wrap: wrap;
}

.partner {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--light-gray);
    transition: color var(--duration) var(--ease);
}

.partner:hover {
    color: var(--dark-gray);
}

/* ============================================
   ABOUT
   ============================================ */
.about {
    padding: var(--space-10) 0;
}

.about-grid {
    display: grid;
    grid-template-columns: 1.3fr 0.7fr;
    gap: var(--space-8);
    align-items: start;
}

.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--dark-gray);
    margin-bottom: var(--space-4);
}

.values {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-5);
    margin-top: var(--space-7);
    padding-top: var(--space-6);
    border-top: var(--border);
}

.value h4 {
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.value p {
    font-size: 0.9rem;
    color: var(--dark-gray);
    line-height: 1.6;
}

.about-numbers {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.number-card {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: var(--border);
    transition: all var(--duration) var(--ease);
}

.number-card:hover {
    background: var(--black);
    color: var(--white);
}

.number-card-wide {
    grid-column: span 2;
    aspect-ratio: auto;
    padding: var(--space-6);
}

.number-value {
    font-family: var(--font-display);
    font-size: 4rem;
    line-height: 1;
    margin-bottom: var(--space-2);
}

.number-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--mid-gray);
}

.number-card:hover .number-label {
    color: var(--mid-gray);
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
    padding: var(--space-10) 0;
    background: var(--off-white);
    border-top: var(--border);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-8);
}

.contact-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--space-4);
}

.contact-desc {
    font-size: 1.125rem;
    color: var(--dark-gray);
    line-height: 1.7;
    margin-bottom: var(--space-7);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.info-item h4 {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-2);
}

.info-item a {
    text-decoration: underline;
    text-underline-offset: 4px;
}

.info-item p {
    color: var(--dark-gray);
    font-size: 0.9rem;
}

/* Form */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-field label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.form-field input,
.form-field textarea {
    padding: var(--space-4);
    font-family: var(--font-body);
    font-size: 1rem;
    background: var(--white);
    border: var(--border);
    transition: all var(--duration) var(--ease);
}

.form-field input:focus,
.form-field textarea:focus {
    outline: none;
    border-color: var(--accent);
}

.form-field textarea {
    resize: vertical;
    min-height: 140px;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    padding: var(--space-8) 0 var(--space-5);
    background: var(--black);
    color: var(--white);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--space-6);
    padding-bottom: var(--space-7);
    margin-bottom: var(--space-5);
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-brand .logo {
    margin-bottom: var(--space-4);
    display: inline-block;
}

.footer-brand p {
    font-size: 0.9rem;
    color: var(--mid-gray);
    max-width: 280px;
    line-height: 1.6;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-col h4 {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    margin-bottom: var(--space-2);
}

.footer-col a {
    font-size: 0.9rem;
    color: var(--mid-gray);
    transition: color var(--duration) var(--ease);
}

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

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

.footer-bottom p {
    font-size: 0.8rem;
    color: var(--mid-gray);
}

.footer-legal {
    display: flex;
    gap: var(--space-5);
}

.footer-legal a {
    font-size: 0.8rem;
    color: var(--mid-gray);
    transition: color var(--duration) var(--ease);
}

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

/* ============================================
   ANIMATIONS - Scroll Reveal
   ============================================ */
[data-reveal] {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger children */
[data-reveal-stagger] > * {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s var(--ease), transform 0.6s var(--ease);
}

[data-reveal-stagger].revealed > *:nth-child(1) { transition-delay: 0s; }
[data-reveal-stagger].revealed > *:nth-child(2) { transition-delay: 0.1s; }
[data-reveal-stagger].revealed > *:nth-child(3) { transition-delay: 0.2s; }
[data-reveal-stagger].revealed > *:nth-child(4) { transition-delay: 0.3s; }

[data-reveal-stagger].revealed > * {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .services-grid {
        grid-template-columns: 1fr;
    }

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

    .case-large {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

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

    .about-numbers {
        max-width: 400px;
    }

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

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

    .footer-brand {
        grid-column: span 2;
        margin-bottom: var(--space-4);
    }
}

@media (max-width: 768px) {
    .nav-links,
    .nav-cta {
        display: none;
    }

    .menu-toggle {
        display: block;
    }

    .mobile-menu {
        display: block;
    }

    .hero-actions {
        flex-direction: column;
    }

    .hero-metrics {
        flex-direction: column;
        gap: var(--space-5);
    }

    .process-step {
        grid-template-columns: 80px 1fr;
        gap: var(--space-4);
    }

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

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

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        grid-column: span 1;
    }

    .footer-brand p {
        max-width: none;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--space-4);
    }
}

@media (max-width: 480px) {
    :root {
        --space-8: 4rem;
        --space-9: 5rem;
        --space-10: 6rem;
    }

    .container {
        padding: 0 var(--space-4);
    }

    .hero-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .service {
        padding: var(--space-5);
    }

    .case {
        padding: var(--space-5);
    }

    .process-step {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .step-number {
        margin-bottom: var(--space-3);
    }
}