/* ==========================================================================
   DESIGN SYSTEM & CUSTOM PROPERTIES
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Colors */
  --color-bg-light: #fafaf9;
  /* Soft warm white */
  --color-bg-alt: #f1f5f9;
  /* Slate light */
  --color-bg-dark: #0f172a;
  /* Deep Slate */
  --color-text-dark: #0f172a;
  --color-text-light: #f8fafc;
  --color-text-muted: #475569;
  --color-text-muted-light: #94a3b8;

  --color-primary: #0f172a;
  --color-primary-light: #1e293b;
  --color-accent: #d97706;
  /* Amber/Bronze */
  --color-accent-hover: #b45309;
  --color-accent-soft: #fef3c7;

  --color-success: #16a34a;
  --color-success-bg: #f0fdf4;
  --color-error: #dc2626;
  --color-error-bg: #fef2f2;
  --color-border: #cbd5e1;
  --color-border-focus: #1e293b;

  /* Typography */
  --font-family-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-family-title: 'Outfit', system-ui, -apple-system, sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2.5rem;
  --spacing-xxl: 4rem;

  /* Borders & Shadows */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-premium: 0 20px 25px -5px rgba(15, 23, 42, 0.05), 0 10px 10px -5px rgba(15, 23, 42, 0.04);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
  /* Offset for sticky header */
}

body {
  font-family: var(--font-family-body);
  background-color: var(--color-bg-light);
  color: var(--color-text-dark);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  scrollbar-gutter: stable;
}

img {
  max-inline-size: 100%;
  block-size: auto;
  display: block;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

button {
  background: none;
  border: none;
  cursor: pointer;
}

ul,
ol {
  list-style: none;
}

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

/* Visually Hidden Helper (semantic-only fields) */
.visually-hidden {
  position: absolute;
  clip-path: inset(50%);
  overflow: hidden;
  inline-size: 1px;
  block-size: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  white-space: nowrap;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  inline-size: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-muted-light);
}

/* ==========================================================================
   TYPOGRAPHY UTILITIES
   ========================================================================== */
.h1,
.h2,
.h3,
.h4 {
  font-family: var(--font-family-title);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-primary);
}

.h1 {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
}

.h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  margin-block-end: var(--spacing-sm);
  position: relative;
  padding-block-end: var(--spacing-sm);
}

.h2::after {
  content: '';
  position: absolute;
  inset-block-end: 0;
  inset-inline-start: 0;
  inline-size: 60px;
  block-size: 4px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

.h2.center {
  text-align: center;
}

.h2.center::after {
  inset-inline-start: 50%;
  transform: translateX(-50%);
}

.h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  margin-block-end: var(--spacing-xs);
}

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

.section-desc {
  max-inline-size: 650px;
  margin-inline: auto;
  margin-block-end: var(--spacing-xl);
  text-align: center;
}

/* ==========================================================================
   BUTTONS & ACTIONS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding-block: var(--spacing-sm);
  padding-inline: var(--spacing-lg);
  font-weight: 600;
  font-family: var(--font-family-title);
  border-radius: var(--radius-md);
  transition: all var(--transition-normal);
  text-align: center;
  min-block-size: 48px;
  /* Safe mobile tap target */
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg-light);
  box-shadow: 0 4px 12px rgba(217, 119, 6, 0.2);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(217, 119, 6, 0.3);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-light);
  border: 2px solid rgba(248, 250, 252, 0.4);
}

.btn-secondary:hover {
  background-color: rgba(248, 250, 252, 0.1);
  border-color: rgba(248, 250, 252, 0.9);
  transform: translateY(-2px);
}

.btn-dark {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  box-shadow: var(--shadow-md);
}

.btn-dark:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-2px);
}

/* ==========================================================================
   HEADER / STICKY NAVIGATION
   ========================================================================== */
.header {
  position: fixed;
  inset-block-start: 0;
  inset-inline-start: 0;
  inline-size: 100%;
  z-index: 1000;
  transition: padding var(--transition-normal), background-color var(--transition-normal), box-shadow var(--transition-normal);
  padding-block: var(--spacing-lg);
}

/* Glassmorphism Header state on scroll */
.header.scrolled {
  background-color: rgba(15, 23, 42, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-block-end: 1px solid rgba(255, 255, 255, 0.05);
  box-shadow: var(--shadow-lg);
  padding-block: var(--spacing-sm);
}

.header-container {
  max-inline-size: 1280px;
  margin-inline: auto;
  padding-inline: var(--spacing-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-family-title);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-text-light);
}

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

.logo-icon {
  block-size: 38px;
  inline-size: auto;
  display: inline-block;
}

.nav-desktop {
  display: flex;
  align-items: center;
  gap: var(--spacing-xl);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-link {
  font-weight: 500;
  font-family: var(--font-family-title);
  color: rgba(248, 250, 252, 0.8);
  font-size: 1rem;
  transition: color var(--transition-fast), transform var(--transition-fast);
  padding-block: var(--spacing-xs);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  inset-block-end: 0;
  inset-inline-start: 0;
  inline-size: 100%;
  block-size: 2px;
  background-color: var(--color-accent);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-fast) ease-out;
  border-radius: var(--radius-full);
}

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

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-link.active {
  color: var(--color-accent);
}

.nav-link.active::after {
  transform: scaleX(1);
  background-color: var(--color-accent);
}

/* Hamburger button */
.btn-menu {
  display: none;
  inline-size: 48px;
  block-size: 48px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 6px;
  z-index: 1001;
}

.btn-menu span {
  display: block;
  inline-size: 24px;
  block-size: 2px;
  background-color: var(--color-text-light);
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

/* Active Hamburger */
.btn-menu.open span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.btn-menu.open span:nth-child(2) {
  opacity: 0;
}

.btn-menu.open span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav Overlay */
.nav-mobile {
  position: fixed;
  inset-block-start: 0;
  inset-inline-end: -100%;
  inline-size: 80%;
  max-inline-size: 320px;
  block-size: 100dvb;
  background-color: var(--color-bg-dark);
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.2);
  z-index: 999;
  padding: var(--spacing-xxl) var(--spacing-lg) var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
  transition: inset-inline-end var(--transition-normal);
}

.nav-mobile.open {
  inset-inline-end: 0;
}

.nav-mobile .nav-menu {
  flex-direction: column;
  align-items: flex-start;
  gap: var(--spacing-lg);
}

.nav-mobile .nav-link {
  font-size: 1.25rem;
}

.nav-mobile .btn-cta {
  inline-size: 100%;
}

/* Back-cover overlay when mobile nav is open */
.nav-overlay-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(4px);
  z-index: 998;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.nav-overlay-backdrop.open {
  opacity: 1;
  visibility: visible;
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero {
  position: relative;
  min-block-size: 100dvb;
  display: grid;
  align-items: center;
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  padding-block-start: 120px;
  padding-block-end: var(--spacing-xl);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.7) 0%, rgba(15, 23, 42, 0.95) 100%);
  pointer-events: none;
}

.hero-container {
  max-inline-size: 1280px;
  margin-inline: auto;
  padding-inline: var(--spacing-lg);
  position: relative;
  z-index: 10;
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

.hero-content {
  max-inline-size: 700px;
}

.hero-title {
  font-family: var(--font-family-title);
  font-weight: 800;
  margin-block-end: var(--spacing-md);
  color: var(--color-text-light);
}

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

.hero-desc {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  color: var(--color-text-muted-light);
  margin-block-end: var(--spacing-xl);
}

.hero-actions {
  display: flex;
  flex-flow: row wrap;
  gap: var(--spacing-md);
  margin-block-end: var(--spacing-xxl);
}



/* ==========================================================================
   SECTIONS GENERAL STYLE
   ========================================================================== */
.section {
  padding-block: var(--spacing-xxl);
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.container {
  max-inline-size: 1280px;
  margin-inline: auto;
  padding-inline: var(--spacing-lg);
}

/* ==========================================================================
   PRODUTOS SECTION
   ========================================================================== */
.products-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-block-end: var(--spacing-xl);
}

.filter-btn {
  padding-block: var(--spacing-xs);
  padding-inline: var(--spacing-lg);
  font-family: var(--font-family-title);
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  background-color: white;
  border: 1px solid var(--color-border);
  color: var(--color-text-dark);
  transition: all var(--transition-fast);
  min-block-size: 40px;
}

.filter-btn:hover {
  border-color: var(--color-text-muted);
  background-color: var(--color-bg-alt);
}

.filter-btn.active {
  background-color: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-lg);
}

.product-card {
  background-color: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(226, 232, 240, 0.8);
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-premium);
}

.product-img-wrapper {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background-color: var(--color-bg-alt);
}

.product-img {
  inline-size: 100%;
  block-size: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

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

.product-tag {
  position: absolute;
  inset-block-start: var(--spacing-sm);
  inset-inline-start: var(--spacing-sm);
  background-color: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: var(--color-text-light);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding-block: 4px;
  padding-inline: 10px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.product-badge-group {
  position: absolute;
  inset-block-end: var(--spacing-sm);
  inset-inline-end: var(--spacing-sm);
  display: flex;
  gap: 4px;
}

.product-badge {
  background-color: var(--color-accent);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  padding-block: 2px;
  padding-inline: 8px;
  border-radius: var(--radius-sm);
}

.product-info {
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  margin-block-end: var(--spacing-xs);
  color: var(--color-primary);
}

.product-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-block-end: var(--spacing-md);
  flex-grow: 1;
}

.product-specs {
  border-block-start: 1px solid var(--color-bg-alt);
  padding-block-start: var(--spacing-md);
  margin-block-end: var(--spacing-lg);
}

.spec-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-block-end: 6px;
}

.spec-icon {
  inline-size: 14px;
  block-size: 14px;
  fill: var(--color-accent);
  flex-shrink: 0;
}

.product-card .btn {
  inline-size: 100%;
}

/* Animation classes for filtering */
.product-card.hidden {
  display: none;
}

/* ==========================================================================
   SOBRE NÓS SECTION
   ========================================================================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

@media (min-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.about-intro-title {
  font-size: clamp(1.5rem, 3.5vw, 2.2rem);
  margin-block-end: var(--spacing-md);
}

.about-intro-p {
  margin-block-end: var(--spacing-md);
  font-size: 1.05rem;
}

.about-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-lg);
  margin-block-start: var(--spacing-xl);
}

.about-highlight-card {
  padding: var(--spacing-md);
  background-color: white;
  border-radius: var(--radius-md);
  border-inline-start: 4px solid var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.about-highlight-num {
  font-size: 2rem;
  font-family: var(--font-family-title);
  font-weight: 800;
  color: var(--color-accent);
  line-height: 1.1;
  margin-block-end: 4px;
}

.about-highlight-txt {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* Timeline / Steps Process */
.process-section {
  margin-block-start: var(--spacing-xxl);
}

.process-steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: var(--spacing-lg);
  position: relative;
}

.process-step-card {
  background-color: white;
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(226, 232, 240, 0.8);
  box-shadow: var(--shadow-sm);
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-number {
  position: absolute;
  inset-block-start: var(--spacing-md);
  inset-inline-end: var(--spacing-md);
  font-size: 3rem;
  font-weight: 800;
  font-family: var(--font-family-title);
  color: rgba(217, 119, 6, 0.1);
  line-height: 1;
}

.step-icon-wrapper {
  inline-size: 52px;
  block-size: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-block-end: var(--spacing-md);
}

.step-icon {
  inline-size: 26px;
  block-size: 26px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.step-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-block-end: var(--spacing-xs);
  color: var(--color-primary);
  padding-inline-end: var(--spacing-xl);
  /* Make room for step number */
}

.step-desc {
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   CONTACTOS & ORÇAMENTO SECTION
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
}

@media (min-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr 1.3fr;
  }
}

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

.info-cards {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.info-card {
  background-color: white;
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius-md);
  border: 1px solid rgba(226, 232, 240, 0.8);
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.info-card-icon {
  inline-size: 40px;
  block-size: 40px;
  border-radius: var(--radius-md);
  background-color: var(--color-bg-alt);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-card-icon svg {
  inline-size: 20px;
  block-size: 20px;
  fill: currentColor;
}

.info-card-title {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  letter-spacing: 0.5px;
  margin-block-end: 2px;
}

.info-card-content {
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* Real Google Maps embed container */
.map-container {
  block-size: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(226, 232, 240, 1);
}

.map-container iframe {
  inline-size: 100%;
  block-size: 100%;
  border: 0;
  display: block;
}

/* Form Container */
.quote-form-card {
  background-color: white;
  padding: var(--spacing-lg) var(--spacing-md);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-premium);
  border: 1px solid rgba(226, 232, 240, 1);
}

@media (min-width: 576px) {
  .quote-form-card {
    padding: var(--spacing-xl);
  }
}

.form-title {
  margin-block-end: var(--spacing-xs);
}

.form-subtitle {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-block-end: var(--spacing-lg);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 576px) {
  .form-grid {
    grid-template-columns: 1fr 1fr;
  }

  .form-group-full {
    grid-column: span 2;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Gestalt Proximity: Label should be closer to input than form groups spacing */
.form-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-text-dark);
  margin-block-end: 6px;
  display: inline-block;
}

.form-label span {
  color: var(--color-error);
}

.form-hint {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-block-end: 4px;
  display: block;
}

.form-control {
  font-family: var(--font-family-body);
  inline-size: 100%;
  min-block-size: 48px;
  /* Safe mobile tap target */
  padding-block: var(--spacing-sm);
  padding-inline: var(--spacing-md);
  background-color: var(--color-bg-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-dark);
  transition: all var(--transition-fast);
  outline: none;
}

textarea.form-control {
  min-block-size: 100px;
  resize: vertical;
}

select.form-control {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%23475569'%3E%3Cpath d='M7 10l5 5 5-5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: calc(100% - 12px) center;
  background-size: 24px;
  padding-inline-end: 40px;
}

/* Focus Visuals */
.form-control:focus {
  border-color: var(--color-border-focus);
  background-color: white;
  box-shadow: 0 0 0 3px rgba(15, 23, 42, 0.08);
}

/* ==========================================================================
   MODERN FORM VALIDATION STYLING
   ========================================================================== */
/* Error state: triggered only after user interaction */
.form-control:user-invalid {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

/* Error message styling */
.error-message {
  display: none;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-error);
  margin-block-start: 4px;
  animation: fadeIn var(--transition-fast);
}

/* Reveal error message adjacent to user-invalid control */
.form-control:user-invalid+.error-message {
  display: block;
}

/* Success state: clear valid indicator after user interaction */
.form-control:user-valid {
  border-color: var(--color-success);
}

/* Fallback class validation (managed by JS for compatibility) */
.form-control.user-invalid-fallback {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form-control.user-invalid-fallback+.error-message {
  display: block;
}

.form-control.user-valid-fallback {
  border-color: var(--color-success);
}

.btn-submit {
  margin-block-start: var(--spacing-md);
  inline-size: 100%;
}

/* ==========================================================================
   MODAL / SUCCESS DIALOG
   ========================================================================== */
.modal {
  display: none;
  /* Controlled by JS or dialog.showModal() */
  position: fixed;
  inset: 0;
  inline-size: 100%;
  block-size: 100%;
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.8);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.modal-content {
  position: relative;
  z-index: 10;
  background-color: white;
  inline-size: 90%;
  max-inline-size: 480px;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow-lg);
  text-align: center;
  border: 1px solid rgba(226, 232, 240, 1);
  animation: modalScaleUp var(--transition-normal);
}

.modal-success-icon {
  inline-size: 64px;
  block-size: 64px;
  border-radius: var(--radius-full);
  background-color: var(--color-success-bg);
  color: var(--color-success);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-inline: auto;
  margin-block-end: var(--spacing-md);
}

.modal-success-icon svg {
  inline-size: 32px;
  block-size: 32px;
  fill: currentColor;
}

.modal-title {
  margin-block-end: var(--spacing-xs);
  color: var(--color-primary);
}

.modal-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-block-end: var(--spacing-lg);
}

.modal-close {
  inline-size: 100%;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  padding-block-start: var(--spacing-xxl);
  padding-block-end: var(--spacing-lg);
  border-block-start: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--spacing-xl);
  margin-block-end: var(--spacing-xl);
}

.footer-logo {
  color: white;
  margin-block-end: var(--spacing-sm);
}

.footer-about-text {
  font-size: 0.9rem;
  color: var(--color-text-muted-light);
  margin-block-end: var(--spacing-md);
  max-inline-size: 280px;
}

.footer-title {
  color: white;
  font-family: var(--font-family-title);
  font-size: 1.1rem;
  font-weight: 700;
  margin-block-end: var(--spacing-md);
  position: relative;
}

.footer-menu {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.footer-link {
  font-size: 0.9rem;
  color: var(--color-text-muted-light);
  transition: color var(--transition-fast);
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-xs);
  font-size: 0.9rem;
  color: var(--color-text-muted-light);
  margin-block-end: var(--spacing-sm);
}

.footer-contact-item svg {
  inline-size: 16px;
  block-size: 16px;
  fill: var(--color-accent);
  flex-shrink: 0;
  margin-block-start: 3px;
}

.footer-bottom {
  border-block-start: 1px solid rgba(255, 255, 255, 0.08);
  padding-block-start: var(--spacing-lg);
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
  font-size: 0.85rem;
  color: var(--color-text-muted-light);
}

/* ==========================================================================
   ANIMATIONS & TRANSITIONS
   ========================================================================== */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes modalScaleUp {
  from {
    opacity: 0;
    transform: scale(0.95);
  }

  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1) translateY(0);
    opacity: 0.8;
  }

  100% {
    transform: scale(2.5) translateY(0);
    opacity: 0;
  }
}

/* ==========================================================================
   RESPONSIVE OVERRIDES
   ========================================================================== */
@media (max-width: 991px) {
  .btn-menu {
    display: flex;
  }

  .nav-desktop {
    display: none;
  }

  .header {
    background-color: var(--color-bg-dark);
    padding-block: var(--spacing-md);
    border-block-end: 1px solid rgba(255, 255, 255, 0.05);
  }
}

@media (max-width: 575px) {
  .hero-actions {
    flex-direction: column;
    inline-size: 100%;
  }

  .hero-actions .btn {
    inline-size: 100%;
  }
}