/* ==========================================================================
   ZR3 EMPREENDIMENTOS | BRAND GUIDELINES
   Premium Digital Architecture styling
   ========================================================================== */

/* --- CSS VARIABLES (Design Tokens) --- */
:root {
    /* Color Palette */
    --primary-accent: #0B5FA5;
    --dark-core: #060A0F;
    --midnight-blue: #14202C;
    --structural-grey: #2F2F2F;
    --structural-grey-light: rgba(255, 255, 255, 0.15);
    --champagne-sand: #EADDCD;
    --champagne-dim: rgba(234, 221, 205, 0.7);
    --white: #FFFFFF;

    /* Typography */
    --font-heading: 'Sora', sans-serif;
    --font-secondary: 'Archivo', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Layout & Spacing */
    --space-tiny: 0.5rem;
    --space-small: 1rem;
    --space-medium: 2.5rem;
    --space-large: 5rem;
    --space-huge: 10rem;

    /* Transitions & Easing */
    --ease-premium: cubic-bezier(0.16, 1, 0.3, 1);
    --transition-slow: 0.8s var(--ease-premium);
    --transition-medium: 0.4s var(--ease-premium);
    --transition-fast: 0.2s ease-in-out;
}

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

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

body {
    background-color: var(--dark-core);
    color: var(--white);
    font-family: var(--font-body);
    font-weight: 300;
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* --- TYPOGRAPHY UTILITIES --- */
.sora-font {
    font-family: var(--font-heading);
}

.inter-font {
    font-family: var(--font-body);
}

.heading-gigantic {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.heading-large {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 600;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.heading-medium {
    font-size: 1.75rem;
    font-weight: 600;
    line-height: 1.3;
}

.heading-small {
    font-size: 1.25rem;
    font-weight: 600;
    line-height: 1.4;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.body-large {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 300;
    line-height: 1.6;
}

.body-base {
    font-size: 1.125rem;
    line-height: 1.6;
    letter-spacing: 0.01em;
}

.body-small {
    font-size: 0.95rem;
    line-height: 1.6;
}

.statement-gigantic {
    font-size: clamp(2.5rem, 6vw, 5.5rem);
    font-weight: 300;
    line-height: 1.1;
    letter-spacing: -0.04em;
}

.eyebrow {
    font-family: var(--font-body);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-weight: 500;
    color: var(--champagne-dim);
}

.font-semibold {
    font-weight: 600;
}

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

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

.text-accent {
    color: var(--primary-accent);
}

.text-champagne {
    color: var(--champagne-sand);
}

.text-champagne-dim {
    color: var(--champagne-dim);
}

.text-white {
    color: var(--white);
}

.text-dark {
    color: var(--dark-core);
}

.text-grey-light {
    color: rgba(255, 255, 255, 0.7);
}

.text-grey-medium {
    color: rgba(255, 255, 255, 0.4);
}

.text-grey-dark {
    color: rgba(0, 0, 0, 0.7);
}

/* --- STRUCTURAL LAYOUT --- */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 5%;
}

.min-h-screen {
    min-height: 100vh;
}

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

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

.flex-start {
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
}

.position-relative {
    position: relative;
}

.block {
    display: block;
}

.grid-2-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-large);
}

.column-span-2 {
    grid-column: span 2;
}

.grid-3-col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-large);
}

.gap-tight {
    gap: 0.75rem !important;
}

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

.align-start {
    align-items: flex-start;
}

.grid-hero {
    display: grid;
    grid-template-columns: 1fr;
    align-items: center;
}

.grid-layout-strategy {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-huge);
}

.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-medium);
}

.eco-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-medium);
}

/* --- SPACING & SIZING --- */
.padding-huge {
    padding: var(--space-huge) 0;
}

.py-medium {
    padding: var(--space-medium) 0;
}

.p-medium {
    padding: var(--space-medium);
}

.p-large {
    padding: var(--space-large);
}

.pl-large {
    padding-left: var(--space-large);
}

.mt-tiny {
    margin-top: var(--space-tiny);
}

.mt-small {
    margin-top: var(--space-small);
}

.mt-medium {
    margin-top: var(--space-medium);
}

.mt-large {
    margin-top: var(--space-large);
}

.mt-huge {
    margin-top: var(--space-huge);
}

.mb-tiny {
    margin-bottom: var(--space-tiny);
}

.mb-small {
    margin-bottom: var(--space-small);
}

.mb-medium {
    margin-bottom: var(--space-medium);
}

.mb-large {
    margin-bottom: var(--space-large);
}

.mb-huge {
    margin-bottom: var(--space-huge);
}

.mr-medium {
    margin-right: var(--space-medium);
}

.my-medium {
    margin-top: var(--space-medium);
    margin-bottom: var(--space-medium);
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.max-w-content {
    max-width: 700px;
}

.max-w-lg {
    max-width: 900px;
}

.text-measure {
    max-width: 60ch;
}

/* --- ARCHITECTURAL ELEMENTS & BORDERS --- */
.structural-divider {
    width: 60px;
    height: 2px;
    background-color: var(--primary-accent);
}

.structural-divider.border-dark {
    background-color: var(--dark-core);
}

.border-left-structural {
    border-left: 1px solid var(--structural-grey-light);
}

.border-top-structural {
    border-top: 1px solid var(--structural-grey-light);
}

.border-bottom-structural {
    border-bottom: 1px solid var(--structural-grey-light);
}

.border-structural {
    border: 1px solid var(--structural-grey-light);
}

.border-dark {
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.border-bottom-dark {
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

/* --- BACKGROUNDS & SECTIONS --- */
.section-dark {
    background-color: var(--dark-core);
}

.section-midnight {
    background-color: var(--midnight-blue);
    background-image: none !important;
    position: relative;
    z-index: 1;
}

.section-midnight::after {
    content: none !important;
}

.section-primary {
    background-color: var(--primary-accent);
    background-image: linear-gradient(135deg, rgba(11, 95, 165, 0.8), rgba(6, 10, 15, 0.9)), url('assets/fundo_00.jpg');
    background-size: cover;
    background-position: center;
}

.section-light {
    background-color: var(--champagne-sand);
}

.section-core {
    background-color: var(--dark-core);
}

.bg-dark {
    background-color: var(--dark-core);
}

.bg-dark-glass {
    background-color: #0a1018;
}

/* Synthetic Noise Overlay - Minimal */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    pointer-events: none;
    z-index: 0;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* For actual image backgrounds if images were provided */
.bg-fundo_00,
.bg-fundo_01,
.bg-fundo_02,
.bg-fundo_03,
.bg-fundo_05 {
    background-size: cover;
    background-position: center;
    background-attachment: scroll;
    /* parallax-like could be done via JS */
}

/* Gradients combined with specific background images explicitly defined */
.bg-fundo_00 {
    background-image: linear-gradient(135deg, rgba(9, 26, 40, 0.7), rgba(6, 10, 15, 0.85)), url('assets/fundo_00.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_01 {
    background-image: linear-gradient(135deg, rgba(17, 26, 34, 0.7), rgba(6, 10, 15, 0.85)), url('assets/fundo_01.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_02 {
    background-image: linear-gradient(135deg, rgba(11, 30, 48, 0.7), rgba(6, 10, 15, 0.85)), url('assets/fundo_02.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_03 {
    background-image: linear-gradient(135deg, rgba(19, 36, 49, 0.7), rgba(6, 10, 15, 0.85)), url('assets/fundo_03.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_05 {
    background-color: var(--champagne-sand);
    background-image: url('assets/fundo_04.jpg');
    background-size: cover;
    background-position: center;
    background-blend-mode: multiply;
}

/* Clean versions for Previews - No Gradients */
.bg-fundo_00-clean {
    background-image: url('assets/fundo_00.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_01-clean {
    background-image: url('assets/fundo_01.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_02-clean {
    background-image: url('assets/fundo_02.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_03-clean {
    background-image: url('assets/fundo_03.jpg');
    background-size: cover;
    background-position: center;
}

.bg-fundo_04-clean {
    background-image: url('assets/fundo_04.jpg');
    background-size: cover;
    background-position: center;
}

/* --- HEADER --- */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: var(--space-medium) 0;
    z-index: 100;
    transition: background-color var(--transition-medium), padding var(--transition-medium);
}

.main-header.scrolled {
    background-color: rgba(6, 10, 15, 0.9);
    backdrop-filter: blur(10px);
    padding: var(--space-small) 0;
    border-bottom: 1px solid var(--structural-grey-light);
}

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

.brand-logo {
    height: 80px;
    width: auto;
    display: block;
}

.main-header.scrolled .brand-logo {
    height: 60px;
}

.nav-label {
    font-family: var(--font-body);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--champagne-dim);
}

/* --- HERO SECTION --- */
.hero-content {
    max-width: 900px;
    margin-top: 5vh;
}

.hero-content p {
    margin-top: var(--space-small);
    color: var(--champagne-dim);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-medium);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.scroll-indicator .line {
    width: 1px;
    height: 60px;
    background: linear-gradient(to bottom, var(--primary-accent), transparent);
    animation: scrollLine 2s infinite cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: top;
}

@keyframes scrollLine {
    0% {
        transform: scaleY(0);
        opacity: 0;
    }

    50% {
        transform: scaleY(1);
        opacity: 1;
    }

    100% {
        transform: scaleY(0);
        opacity: 0;
        transform-origin: top;
    }
}

/* --- BRAND GUIDELINES BLOCKS --- */
.logo-display-box {
    min-height: 350px;
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-medium);
    position: relative;
    z-index: 1;
}

.logo-display-box:hover {
    transform: translateY(-5px);
}

.logo-guide-img {
    max-height: 150px;
    width: auto;
    object-fit: contain;
}

.logo-label {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    z-index: 2;
}

/* --- POSTS SECTION --- */
.post-card {
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    background-color: var(--midnight-blue);
    position: relative;
}

.post-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.post-img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 4/5;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.post-card:hover .post-img {
    transform: scale(1.05);
}

.typo-box:nth-child(3) {
    grid-column: span 2;
    max-width: 600px;
    margin: 0 auto;
}

.logo-download-btn {
    position: absolute;
    top: 1.2rem;
    right: 1.2rem;
}

.logo-vector-downloads {
    border-radius: 8px;
    gap: var(--space-medium);
}

.vector-btns-group {
    display: flex;
    gap: 1rem;
    flex-shrink: 0;
}

.column-span-2 {
    grid-column: span 2;
}

.color-card {
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-medium);
    position: relative;
    z-index: 1;
}

.color-card:hover {
    transform: translateY(-10px);
}

.color-swatch {
    height: 200px;
    width: 100%;
}

/* Flat color swatch — pure solid color, no texture or background-image inheritance */
.color-swatch-flat {
    height: 200px;
    width: 100%;
    background-image: none !important;
    position: relative;
    z-index: 1;
}

.btn-font-download {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.65rem 1.2rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 6px;
    color: var(--champagne-sand);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 500;
    text-decoration: none;
    transition: background-color var(--transition-medium), border-color var(--transition-medium), color var(--transition-medium);
}

.btn-font-download:hover {
    background-color: var(--primary-accent);
    border-color: var(--primary-accent);
    color: #fff;
}

.text-uppercase {
    text-transform: uppercase;
}

.tracking-wide {
    letter-spacing: 0.1em;
}

.asset-card {
    border-radius: 8px;
    overflow: hidden;
    transition: transform var(--transition-medium);
    position: relative;
    z-index: 1;
}

.asset-card:hover {
    transform: translateY(-5px);
}

.asset-preview {
    height: 180px;
    width: 100%;
    position: relative;
    z-index: 1;
}

.btn-download {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--champagne-sand);
    transition: background-color var(--transition-medium), transform var(--transition-medium), color var(--transition-medium);
}

.btn-download:hover {
    background-color: var(--primary-accent);
    color: var(--white);
    transform: scale(1.05);
}

.btn-download svg {
    transition: stroke var(--transition-medium);
}

.btn-download:hover svg {
    stroke: var(--white) !important;
}

/* --- CARDS & BLOCKS --- */
.eco-card {
    padding: var(--space-large) var(--space-medium);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.eco-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.05);
}

.eco-card.bg-dark:hover {
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.eco-card .card-number {
    font-size: 0.85rem;
    font-weight: 600;
}

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

.clean-list {
    list-style: none;
}

.icon-plus,
.icon-minus {
    font-size: 1.5rem;
    font-weight: 300;
}

/* --- ANIMATIONS (Reveal Triggers via JS) --- */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-fade-in {
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.is-revealed .fade-up,
.is-revealed.fade-up {
    opacity: 1;
    transform: translateY(0);
}

.is-revealed .fade-left,
.is-revealed.fade-left {
    opacity: 1;
    transform: translateX(0);
}

.is-revealed .reveal-fade-in,
.is-revealed.reveal-fade-in {
    opacity: 1;
}

.delay-1 {
    transition-delay: 0.1s;
}

.delay-2 {
    transition-delay: 0.2s;
}

.delay-3 {
    transition-delay: 0.3s;
}

.delay-4 {
    transition-delay: 0.4s;
}

.card-stagger-1 {
    transition-delay: 0.1s;
}

.card-stagger-2 {
    transition-delay: 0.2s;
}

.card-stagger-3 {
    transition-delay: 0.3s;
}

.card-stagger-4 {
    transition-delay: 0.4s;
}

/* Initialization Animation state for Header */
.reveal-fade-down {
    animation: fadeDown 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fadeDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- RESPONSIVE DESIGN --- */
.hidden-desktop {
    display: none;
}

@media (max-width: 900px) {
    :root {
        --space-large: 3.5rem;
        --space-huge: 5rem;
    }

    .column-span-2 {
        grid-column: span 1;
    }

    .grid-2-col,
    .grid-3-col {
        grid-template-columns: 1fr;
        gap: var(--space-large);
    }

    .grid-layout-strategy {
        grid-template-columns: 1fr;
        gap: var(--space-large);
    }

    .statement-gigantic {
        text-align: left;
    }

    .border-left-structural {
        border-left: none;
        padding-left: 0;
    }

    .hidden-mobile {
        display: none;
    }

    .hidden-desktop {
        display: block;
    }

    .flex-mobile-col {
        flex-direction: column;
        gap: var(--space-small);
    }

    .mt-mobile-small {
        margin-top: var(--space-small);
    }
}