/* ==========================================================================
   KODA STUDIO - CSS ARCHITECTURE
   ========================================================================== */

:root {
    /* Colors */
    --c-bg: #000006;
    --c-bg-darker: #000004;
    --c-bg-surface: #0a0a14;
    --c-text: #f0f0f0;
    --c-text-muted: #888888;
    --c-accent: #00daff; /* Cyan */
    --c-accent-dark: #00b8d4;
    --c-border: #1a1a2e;

    /* Typography */
    --font-primary: 'Inter', sans-serif;
    
    /* Spacing (8pt grid) */
    --s-1: 8px;
    --s-2: 16px;
    --s-3: 24px;
    --s-4: 32px;
    --s-6: 48px;
    --s-8: 64px;
    --s-12: 96px;
    --s-16: 128px;

    /* Animation */
    --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-spring: 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    
    /* Geometry */
    --radius: 0px; /* Sharp engineering edges */
}

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

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

body {
    font-family: var(--font-primary);
    background-color: var(--c-bg);
    color: var(--c-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

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

ul {
    list-style: none;
}

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

button {
    background: none;
    border: none;
    cursor: pointer;
    font: inherit;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--s-3);
}

.section {
    padding: var(--s-12) 0;
}

.bg-darker {
    background-color: var(--c-bg-darker);
}

.bg-accent {
    background-color: var(--c-accent);
    color: var(--c-bg);
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
.text-accent {
    color: var(--c-accent);
}

.section__title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--s-2);
    letter-spacing: -0.02em;
}

.section__subtitle {
    font-size: 1.125rem;
    color: var(--c-text-muted);
    max-width: 60ch;
}

/* ==========================================================================
   BUTTONS
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--s-2) var(--s-4);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--radius);
    transition: transform var(--transition-fast), background var(--transition-fast), color var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn:active {
    transform: scale(0.98);
}

.btn--primary {
    background-color: var(--c-accent);
    color: var(--c-bg);
    border: 1px solid var(--c-accent);
}

.btn--primary:hover {
    background-color: var(--c-accent-dark);
    border-color: var(--c-accent-dark);
}

.btn--outline {
    background-color: transparent;
    border: 1px solid var(--c-border);
    color: var(--c-text);
}

.btn--outline:hover {
    border-color: var(--c-accent);
    color: var(--c-accent);
}

.btn--dark {
    background-color: var(--c-bg);
    color: var(--c-text);
    border: 1px solid var(--c-bg);
}

.btn--dark:hover {
    background-color: var(--c-bg-surface);
}

/* ==========================================================================
   HEADER
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    padding: var(--s-3) 0;
    transition: background-color var(--transition-fast), padding var(--transition-fast), border-bottom var(--transition-fast);
    border-bottom: 1px solid transparent;
}

.header.is-scrolled {
    background-color: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(8px);
    padding: var(--s-2) 0;
    border-bottom: 1px solid var(--c-border);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: -0.05em;
}

.logo__dot {
    color: var(--c-accent);
}

.nav {
    display: none; /* Mobile first hidden */
}

.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 6px;
    z-index: 101;
}

.menu-toggle__bar {
    width: 24px;
    height: 2px;
    background-color: var(--c-text);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle.is-active .menu-toggle__bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}

.menu-toggle.is-active .menu-toggle__bar:nth-child(2) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ==========================================================================
   HERO SECTION (Asymmetric Tension)
   ========================================================================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--s-16);
    padding-bottom: var(--s-8);
}

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

.hero__title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    line-height: 1;
    letter-spacing: -0.03em;
    margin-bottom: var(--s-4);
    text-transform: uppercase;
}

.hero__desc {
    font-size: 1.125rem;
    color: var(--c-text-muted);
    max-width: 50ch;
    margin-bottom: var(--s-6);
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--s-2);
}

/* Data-Viz Grid (CSS/JS Animated Visual) */
.hero__visual {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dataviz {
    width: 100%;
    max-width: 500px;
    background-color: var(--c-bg-surface);
    border: 1px solid var(--c-border);
    padding: var(--s-4);
    display: flex;
    flex-direction: column;
    gap: var(--s-4);
    position: relative;
    /* Brutalist shadow */
    box-shadow: 16px 16px 0px 0px rgba(0, 218, 255, 0.15);
}

.dataviz__header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--c-border);
    padding-bottom: var(--s-2);
}

.dataviz__title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--c-text-muted);
    font-weight: 600;
}

.dataviz__badge {
    font-size: 0.75rem;
    background-color: rgba(0, 218, 255, 0.15);
    color: var(--c-accent);
    padding: 2px 8px;
    border: 1px solid var(--c-accent);
}

.dataviz__main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--s-4);
}

.dataviz__metric {
    display: flex;
    flex-direction: column;
}

.dataviz__label {
    font-size: 0.875rem;
    color: var(--c-text-muted);
}

.dataviz__value {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
    color: var(--c-text);
    font-variant-numeric: tabular-nums;
}

.dataviz__unit {
    font-size: 1rem;
    color: var(--c-accent);
    font-weight: 600;
    margin-left: 4px;
}

.dataviz__chart {
    height: 120px;
    display: flex;
    align-items: flex-end;
    gap: 8px;
    border-bottom: 1px solid var(--c-border);
    padding-bottom: 8px;
}

.chart-bar {
    flex: 1;
    background-color: var(--c-border);
    height: 0;
    transition: height 1s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.chart-bar.is-animated {
    height: var(--height);
}

.chart-bar--active {
    background-color: var(--c-accent);
}

.dataviz__footer {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    color: var(--c-text-muted);
}

.dataviz__node {
    display: flex;
    align-items: center;
    gap: 6px;
}

.node-indicator {
    width: 6px;
    height: 6px;
    background-color: var(--c-border);
    border-radius: 50%;
}

.node-indicator--sync {
    background-color: var(--c-accent);
    animation: blink 1.5s infinite ease-in-out;
}

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

/* ==========================================================================
   SERVICES
   ========================================================================== */
.section__header {
    margin-bottom: var(--s-8);
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--s-4);
}

.service-card {
    background-color: var(--c-bg);
    border: 1px solid var(--c-border);
    padding: var(--s-6) var(--s-4);
    transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--c-accent);
}

.service-card__icon {
    color: var(--c-accent);
    margin-bottom: var(--s-4);
}

.service-card__icon svg {
    width: 32px;
    height: 32px;
}

.service-card__title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--s-2);
}

.service-card__desc {
    color: var(--c-text-muted);
    font-size: 1rem;
}

/* ==========================================================================
   METHODOLOGY
   ========================================================================== */
.method-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--s-6);
    margin-top: var(--s-8);
}

.method-list__item {
    display: flex;
    gap: var(--s-4);
    align-items: flex-start;
}

.method-list__number {
    font-size: 2rem;
    font-weight: 900;
    color: transparent;
    -webkit-text-stroke: 1px var(--c-accent);
    line-height: 1;
}

.method-list__text h4 {
    font-size: 1.25rem;
    margin-bottom: var(--s-1);
    font-weight: 700;
}

.method-list__text p {
    color: var(--c-text-muted);
}

/* ==========================================================================
   CTA
   ========================================================================== */
.cta {
    padding: var(--s-16) 0;
}

.cta__container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.cta__title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--s-2);
    color: var(--c-bg);
    max-width: 20ch;
    text-transform: uppercase;
}

.cta__desc {
    font-size: 1.25rem;
    margin-bottom: var(--s-6);
    color: var(--c-bg-darker);
    font-weight: 600;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--c-border);
    padding: var(--s-8) 0;
}

.footer__container {
    display: flex;
    flex-direction: column;
    gap: var(--s-4);
}

.footer__tagline {
    color: var(--c-text-muted);
    font-size: 0.875rem;
    margin-top: 4px;
}

.footer__links {
    display: flex;
    gap: var(--s-4);
}

.footer__link {
    color: var(--c-text-muted);
    font-size: 0.875rem;
}

.footer__link:hover {
    color: var(--c-accent);
}

.footer__copy {
    color: var(--c-text-muted);
    font-size: 0.75rem;
    margin-top: var(--s-4);
}

/* ==========================================================================
   MEDIA QUERIES (DESKTOP)
   ========================================================================== */
@media (min-width: 768px) {
    /* Header */
    .menu-toggle {
        display: none;
    }
    
    .nav {
        display: flex;
        align-items: center;
        gap: var(--s-4);
    }
    
    .nav__list {
        display: flex;
        gap: var(--s-4);
    }
    
    .nav__link {
        font-size: 0.875rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }
    
    .nav__link:hover {
        color: var(--c-accent);
    }

    /* Hero */
    .hero__container {
        grid-template-columns: 1.2fr 0.8fr;
        align-items: center;
    }

    /* Services */
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Methodology */
    .method-list {
        grid-template-columns: repeat(3, 1fr);
    }

    /* Footer */
    .footer__container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .footer__copy {
        margin-top: 0;
    }
}

/* Mobile Nav Active State */
@media (max-width: 767px) {
    .nav.is-active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--c-bg-darker);
        padding: var(--s-4);
        border-bottom: 1px solid var(--c-border);
    }
    
    .nav__list {
        display: flex;
        flex-direction: column;
        gap: var(--s-4);
        margin-bottom: var(--s-4);
    }

    /* On mobile the typed title can wrap to 2 lines */
    .hero__typed-wrap {
        height: 2.6em;
    }
}

/* ==========================================================================
   UTILITIES & ANIMATIONS
   ========================================================================== */
.js-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.js-reveal.is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Service cards — same reveal system driven by JS stagger */
.service-card {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out,
                border-color var(--transition-fast);
}

.service-card.is-visible {
    opacity: 1;
    transform: translateY(0);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--c-accent);
}

/* Method list items reveal */
.js-method-item {
    opacity: 0;
    transform: translateX(-20px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.js-method-item.is-visible {
    opacity: 1;
    transform: translateX(0);
}

.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ==========================================================================
   FLOATING WHATSAPP
   ========================================================================== */
.floating-whatsapp {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 64px;
    height: 64px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
    z-index: 1000;
    transition: transform var(--transition-fast), background-color var(--transition-fast);
    animation: pulse-wa 2s infinite;
}

.floating-whatsapp:hover {
    background-color: #1EBE55;
    transform: translateY(-4px);
    animation: none;
}

@keyframes pulse-wa {
    0%   { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
    70%  { box-shadow: 0 0 0 20px rgba(37, 211, 102, 0); }
    100% { box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* ==========================================================================
   SCROLL PROGRESS BAR
   ========================================================================== */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--c-accent);
    transform-origin: left center;
    transform: scaleX(0);
    z-index: 9999;
    transition: transform 0.1s linear;
    box-shadow: 0 0 8px rgba(0, 218, 255, 0.6);
}

/* ==========================================================================
   HERO CURSOR GLOW
   ========================================================================== */
.hero {
    overflow: hidden;
}

.hero-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 218, 255, 0.07) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.4s ease;
    will-change: transform;
    z-index: 0;
}

/* Keep hero content above glow */
.hero__content,
.hero__visual {
    position: relative;
    z-index: 1;
}

/* Typed word wrapper — reserves space for changing text, never shifts layout */
.hero__typed-wrap {
    display: block;
    position: relative;
    height: 1.3em;
    line-height: 1;
    margin-bottom: 0.8em;
}

/* Typed word — absolutely positioned so it never affects surrounding layout */
.hero__typed {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

/* ==========================================================================
   MAGNETIC BUTTON TRANSITION
   ========================================================================== */
.hero__actions .btn--primary {
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275),
                background var(--transition-fast),
                color var(--transition-fast);
}