/* 
  Architectural Bronze Design System
  Theme: Dark / Metallic Bronze
  Tokens generated from Stitch MCP Design System
*/

:root {
    /* Colors */
    --background: #3D5EA8;
    --surface: #3D5EA8;
    --surface-bright: #4A6DB5;
    --surface-container-lowest: #3D5EA8;
    --surface-container-low: #3A5BA5;
    --surface-container: #3758A0;
    --surface-container-high: #33559B;
    --surface-container-highest: #2F5296;

    --primary: #ffffff;
    --primary-container: #dce8ff;
    --on-primary: #3D5EA8;
    --primary-gradient: linear-gradient(135deg, #ffffff 0%, #dce8ff 100%);

    --on-surface: #ffffff;
    --on-surface-variant: rgba(255, 255, 255, 0.75);
    --outline-variant: rgba(255, 255, 255, 0.25);
    
    /* Typography */
    --font-family: 'Inter', sans-serif;
    
    --display-lg: clamp(2.5rem, 5vw, 4.5rem);
    --headline-lg: clamp(1.75rem, 3vw, 2.5rem);
    --headline-md: 1.5rem;
    --headline-sm: 1.25rem;
    --body-lg: 1.125rem;
    --body-md: 1rem;
    --label: 0.75rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-8: 2rem;
    --spacing-12: 3rem;
    --spacing-20: 5rem;
    --spacing-32: 8rem;

    /* Architecture */
    --border-radius-btn: 0.375rem;
    --border-radius-card: 0px; /* No rounded borders for purely architectural feel */
    --transition-speed: 0.3s;
}

/* Reset & Basics */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    background-color: var(--background);
    color: var(--on-surface);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

.container {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
}

/* Typography Classes */
.display-lg { font-size: var(--display-lg); font-weight: 700; line-height: 1.1; letter-spacing: -0.02em; margin-bottom: var(--spacing-4); }
.headline-lg { font-size: var(--headline-lg); font-weight: 600; line-height: 1.2; margin-bottom: var(--spacing-3); }
.headline-md { font-size: var(--headline-md); font-weight: 500; margin-bottom: var(--spacing-2); }
.headline-sm { font-size: var(--headline-sm); font-weight: 500; margin-bottom: var(--spacing-2); }
.body-lg { font-size: var(--body-lg); color: var(--on-surface-variant); margin-bottom: var(--spacing-4); }
.body-md { font-size: var(--body-md); color: var(--on-surface-variant); }
.label { font-size: var(--label); font-weight: 600; letter-spacing: 0.05em; }

.uppercase { text-transform: uppercase; }
.accent-text { color: var(--primary); }
.text-variant { color: var(--on-surface-variant); }
.m-0 { margin: 0; }
.mt-2 { margin-top: var(--spacing-2); }
.mt-4 { margin-top: var(--spacing-4); }
.ml-icon { margin-left: 1.7rem; }

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 0.95rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: var(--border-radius-btn);
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    border: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: var(--on-primary);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
    transform: translateY(-2px);
    background: linear-gradient(135deg, var(--primary-container) 0%, var(--primary) 100%);
}

.btn-secondary {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--outline-variant);
}

.btn-secondary:hover {
    background: var(--surface-container-high);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 100;
    background: rgba(61, 94, 168, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--outline-variant);
    transition: background 0.3s;
}

.nav-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--on-surface);
}

.nav-links {
    display: flex;
    gap: var(--spacing-8);
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.nav-links a:hover {
    color: var(--primary);
}

/* Base Section Spacing */
section, footer {
    padding: var(--spacing-20) 0;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 100px; /* Offset for nav */
    background: radial-gradient(circle at right top, var(--surface-container-low), var(--surface));
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-12);
    align-items: center;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
}

.hero-image-wrapper {
    position: relative;
    border-radius: var(--border-radius-btn);
    overflow: hidden;
}

.hero-image {
    width: 100%;
    height: auto;
    object-fit: cover;
    filter: grayscale(40%) contrast(1.2);
}

.glass-overlay {
    position: absolute;
    top: 50%;
    right: -10%;
    width: 60%;
    height: 60%;
    background: rgba(30, 60, 120, 0.4);
    backdrop-filter: blur(15px);
    border-left: 1px solid var(--outline-variant);
    border-top: 1px solid var(--outline-variant);
}

/* About Section */
.about {
    background-color: var(--surface-container-lowest);
}

.about-grid {
    display: grid;
    grid-template-columns: 5fr 7fr;
    gap: var(--spacing-20);
    align-items: center;
}

.architectural-breadcrumb {
    display: flex;
    gap: var(--spacing-8);
    margin-top: var(--spacing-8);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--outline-variant);
}

.breadcrumb-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
}

.breadcrumb-item .value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--on-surface);
}

/* Services */
.services {
    background-color: var(--surface);
}

.section-header {
    margin-bottom: var(--spacing-12);
    max-width: 600px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-4); /* Whitespace instead of dividers */
}

.service-card {
    background-color: var(--surface-container-low);
    padding: var(--spacing-8);
    transition: all var(--transition-speed) ease;
    border-top: 2px solid transparent;
}

.service-card:hover {
    background-color: var(--surface-container-high);
    border-top: 2px solid var(--primary);
    transform: translateY(-5px);
}

.service-card i {
    margin-bottom: var(--spacing-4);
}

/* Benefits Section */
.benefits {
    background-color: var(--surface-container-lowest);
}

.benefits-wrapper {
    display: flex;
    justify-content: flex-end; /* Asymmetry intentionally to the right */
}

.benefits-content {
    max-width: 800px;
}

.benefits-list {
    margin-top: var(--spacing-12);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-8);
}

.benefit-item {
    display: flex;
    gap: var(--spacing-8);
}

.benefit-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-container);
    opacity: 0.8;
}

/* Footer Element */
.footer {
    background-color: var(--surface-container-low);
    border-top: 1px solid var(--surface-container-high);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-12);
    padding-bottom: var(--spacing-12);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--outline-variant);
}

.legal-links a:hover {
    color: var(--primary);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

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

.drop-in {
    opacity: 0;
    transform: translateY(-120px);
    transition: opacity 2s cubic-bezier(0.16, 1, 0.3, 1), transform 2s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.delay-1 {
    transition-delay: 0.2s;
}

.delay-2 {
    transition-delay: 0.4s;
}

/* Phone in Navbar */
.nav-phone a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--on-surface-variant);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: color var(--transition-speed);
    white-space: nowrap;
}

.nav-phone a:hover {
    color: var(--primary);
}

/* Hamburger Button */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--on-surface);
    transition: all 0.3s ease;
    transform-origin: center;
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--surface-container);
    border-bottom: 1px solid var(--outline-variant);
    z-index: 99;
    transform: translateY(-110%);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.mobile-menu.open {
    transform: translateY(0);
}

.mobile-menu-inner {
    width: 90%;
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--spacing-8) 0;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.mobile-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--on-surface-variant);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--spacing-3) 0;
    border-bottom: 1px solid var(--outline-variant);
    transition: color var(--transition-speed);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

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

.mobile-wsp-btn {
    align-self: flex-start;
    margin-top: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* Floating WhatsApp Button */
.whatsapp-float {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 58px;
    height: 58px;
    background: #25D366;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: #fff;
    z-index: 998;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    transition: all var(--transition-speed) ease;
}

.whatsapp-float:hover {
    transform: scale(1.12);
    box-shadow: 0 6px 28px rgba(37, 211, 102, 0.65);
    color: #fff;
}

/* Responsive Tablet */
@media (max-width: 1024px) {
    .nav-links { display: none; }
    .nav-phone { display: none; }
    .hamburger { display: flex; }
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-actions { justify-content: center; }
    .about-grid { grid-template-columns: 1fr; }
    .benefits-wrapper { justify-content: flex-start; }
    .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .display-lg { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; }
    .architectural-breadcrumb { flex-direction: column; }
    .footer-bottom { flex-direction: column; gap: var(--spacing-4); text-align: center; }
    .nav-cta { display: none; }
    .whatsapp-float { bottom: 20px; right: 20px; width: 52px; height: 52px; font-size: 1.5rem; }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.85);
    backdrop-filter: blur(12px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.show {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background: var(--surface-container-high);
    padding: var(--spacing-12);
    width: 90%;
    max-width: 500px;
    position: relative;
    border: 1px solid var(--outline-variant);
    text-align: center;
    transform: translateY(40px);
    transition: transform 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.show .modal-content {
    transform: translateY(0);
}

.close-modal {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    color: var(--on-surface-variant);
    font-size: 1.5rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.3s;
}

.close-modal:hover {
    color: var(--primary);
}

.modal-grid {
    display: flex;
    justify-content: center;
    gap: var(--spacing-4);
    margin-top: var(--spacing-8);
    flex-wrap: wrap;
}

.modal-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-4);
    min-width: 100px;
    background: var(--surface-container-low);
    border: 1px solid var(--outline-variant);
    transition: all 0.3s ease;
}

.modal-item span {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
}

.modal-item:hover {
    background: var(--surface-container-highest);
    border-color: var(--primary);
    transform: translateY(-5px);
    color: var(--primary);
}

@media (max-width: 480px) {
    .modal-grid {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ── Taller Strip (inside Services) ─────────────────────── */
.taller-strip {
    margin-top: var(--spacing-12);
    padding-top: var(--spacing-8);
    border-top: 1px solid var(--outline-variant);
}

.taller-strip > .label {
    display: block;
    margin-bottom: var(--spacing-4);
}

.taller-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
}

.taller-item {
    cursor: pointer;
    overflow: hidden;
    position: relative;
    aspect-ratio: 4 / 3;
}

.taller-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%);
    transition: transform 0.4s ease, filter 0.4s ease;
}

.taller-item:hover img {
    transform: scale(1.06);
    filter: grayscale(0%);
}

/* ── Gallery Section ─────────────────────────────────────── */
.gallery {
    background-color: var(--surface-container-lowest);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-3);
    margin-top: var(--spacing-8);
}

.gallery-item {
    cursor: pointer;
    overflow: hidden;
    position: relative;
    aspect-ratio: 3 / 4;
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(20%);
    transition: transform 0.4s ease, filter 0.4s ease;
}

.gallery-item:hover img {
    transform: scale(1.06);
    filter: grayscale(0%);
}

.gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: var(--primary);
    font-size: 1.4rem;
}

.gallery-item:hover .gallery-overlay,
.taller-item:hover .gallery-overlay {
    opacity: 1;
}

.gallery-cta {
    margin-top: var(--spacing-12);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-4);
}

.gallery-cta .btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
}

/* ── Lightbox ─────────────────────────────────────────────── */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.open {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.96);
    backdrop-filter: blur(6px);
    cursor: pointer;
}

.lightbox-img-wrap {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-img-wrap img {
    max-width: 88vw;
    max-height: 88vh;
    object-fit: contain;
    display: block;
    transition: opacity 0.18s ease;
}

.lightbox-close {
    position: fixed;
    top: 18px;
    right: 22px;
    z-index: 2001;
    background: none;
    border: none;
    color: var(--on-surface-variant);
    font-size: 2.2rem;
    cursor: pointer;
    line-height: 1;
    transition: color 0.2s ease;
}

.lightbox-close:hover { color: var(--primary); }

.lightbox-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    z-index: 2001;
    background: rgba(30, 60, 120, 0.85);
    border: 1px solid var(--outline-variant);
    color: var(--on-surface);
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease;
    font-size: 1rem;
}

.lightbox-nav:hover {
    background: var(--surface-container-high);
    color: var(--primary);
}

.lightbox-prev { left: 14px; }
.lightbox-next { right: 14px; }

.lightbox-counter {
    position: fixed;
    bottom: 18px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2001;
    font-size: var(--label);
    color: var(--on-surface-variant);
    letter-spacing: 0.1em;
}

/* Responsive gallery/taller */
@media (max-width: 1024px) {
    .gallery-grid { grid-template-columns: repeat(3, 1fr); }
    .taller-grid  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    .gallery-grid { grid-template-columns: repeat(2, 1fr); }
    .taller-grid  { grid-template-columns: repeat(2, 1fr); }
    .lightbox-prev { left: 6px; }
    .lightbox-next { right: 6px; }
}

/* ── Scroll Progress Bar ─────────────────────────────────── */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: var(--primary-gradient);
    z-index: 9999;
    transition: width 0.1s linear;
    box-shadow: 0 0 8px rgba(255, 255, 255, 0.5);
}

/* ── Custom Cursor ───────────────────────────────────────── */
@media (min-width: 1025px) {
    body.custom-cursor,
    body.custom-cursor a,
    body.custom-cursor button,
    body.custom-cursor .service-card,
    body.custom-cursor .gallery-item,
    body.custom-cursor .taller-item,
    body.custom-cursor .modal-item {
        cursor: none !important;
    }
}

@media (max-width: 1024px) {
    #cursor-dot, #cursor-ring { display: none !important; }
}

#cursor-dot {
    position: fixed;
    top: 0; left: 0;
    width: 8px; height: 8px;
    background: var(--primary);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99999;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: opacity 0.2s ease, width 0.2s ease, height 0.2s ease;
    will-change: left, top;
}

#cursor-ring {
    position: fixed;
    top: 0; left: 0;
    width: 36px; height: 36px;
    border: 1.5px solid rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    pointer-events: none;
    z-index: 99998;
    transform: translate(-50%, -50%);
    opacity: 0;
    transition: width 0.22s ease, height 0.22s ease, border-color 0.22s ease, opacity 0.2s ease;
    will-change: left, top;
}

body.custom-cursor #cursor-dot,
body.custom-cursor #cursor-ring {
    opacity: 1;
}

body.cursor-hover #cursor-ring {
    width: 56px; height: 56px;
    border-color: var(--primary);
}

/* ── Text Reveal (clip-path) ─────────────────────────────── */
.reveal-wrap {
    overflow: hidden;
    display: block;
}

.reveal-text {
    display: block;
    transform: translateY(105%);
    opacity: 0;
    transition: transform 0.85s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.5s ease;
}

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

.reveal-text.delay-1 { transition-delay: 0.15s; }
.reveal-text.delay-2 { transition-delay: 0.3s; }
.reveal-text.delay-3 { transition-delay: 0.45s; }

/* ── 3D Card Tilt ────────────────────────────────────────── */
.service-card {
    transform-style: preserve-3d;
    will-change: transform;
}

/* ── Staggered Gallery ───────────────────────────────────── */
.gallery-item.fade-in,
.taller-item.fade-in {
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

/* ── Parallax Hero ───────────────────────────────────────── */
.hero-image-wrapper {
    will-change: transform;
}

/* ── Stat Counter ────────────────────────────────────────── */
.breadcrumb-item .value {
    display: inline-block;
    transition: color 0.3s;
}

/* ── Benefit numbers pulse on enter ─────────────────────── */
.benefit-number {
    transition: color 0.4s ease, transform 0.4s ease;
}

.benefit-item.visible .benefit-number {
    animation: pulseNum 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes pulseNum {
    0%   { transform: scale(0.6); opacity: 0; }
    60%  { transform: scale(1.15); opacity: 1; }
    100% { transform: scale(1); opacity: 0.8; }
}