/* ============================================
   Festival Mineiro de Arte Surda - Stylesheet
   Mobile-First | WCAG Accessible | Modern Design
   Color Palette: White (#FFFFFF), Red (#D32F2F), Blue (#1565C0)
   ============================================ */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
  --color-white: #FFFFFF;
  --color-off-white: #F8F9FA;
  --color-light-gray: #E9ECEF;
  --color-gray: #6C757D;
  --color-dark: #1A1A2E;
  --color-red: #D32F2F;
  --color-red-dark: #B71C1C;
  --color-red-light: #FFCDD2;
  --color-blue: #1565C0;
  --color-blue-dark: #0D47A1;
  --color-blue-light: #BBDEFB;
  --color-accent-gradient: linear-gradient(135deg, var(--color-red), var(--color-blue));
  --font-primary: 'Inter', sans-serif;
  --font-display: 'Outfit', sans-serif;
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.16);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 50px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 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);
  color: var(--color-dark);
  background: var(--color-white);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  border: none;
}

/* Focus visible for accessibility */
:focus-visible {
  outline: 3px solid var(--color-blue);
  outline-offset: 3px;
  border-radius: 4px;
}

/* Skip to content link */
.skip-link {
  position: absolute;
  top: -100%;
  left: 16px;
  background: var(--color-blue);
  color: var(--color-white);
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
}

.skip-link:focus {
  top: 16px;
}

/* --- Utility Classes --- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.section-padding {
  padding: 60px 0;
}

.section-title {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  color: var(--color-dark);
}

.section-subtitle {
  text-align: center;
  color: var(--color-gray);
  max-width: 600px;
  margin: 0 auto 40px;
  font-size: 1rem;
}

.accent-line {
  width: 60px;
  height: 4px;
  background: var(--color-accent-gradient);
  border-radius: 2px;
  margin: 0 auto 20px;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  transition: var(--transition);
  letter-spacing: 0.3px;
}

.btn-primary {
  background: var(--color-red);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(211, 47, 47, 0.3);
}

.btn-primary:hover {
  background: var(--color-red-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(211, 47, 47, 0.4);
}

.btn-secondary {
  background: var(--color-blue);
  color: var(--color-white);
  box-shadow: 0 4px 15px rgba(21, 101, 192, 0.3);
}

.btn-secondary:hover {
  background: var(--color-blue-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(21, 101, 192, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 2px solid var(--color-white);
}

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

/* --- Header / Navbar --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
  padding: 10px 0;
}

.header.scrolled .nav-link {
  color: var(--color-dark);
}

.header.scrolled .nav-logo {
  color: var(--color-dark);
}

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

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--color-accent-gradient);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-menu {
  display: none;
}

.nav-link {
  color: var(--color-white);
  font-weight: 500;
  font-size: 0.95rem;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  position: relative;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 16px;
  right: 16px;
  height: 2px;
  background: var(--color-red);
  transform: scaleX(0);
  transition: var(--transition);
}

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

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  background: none;
  padding: 8px;
}

.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

.header.scrolled .nav-toggle span {
  background: var(--color-dark);
}

/* Mobile menu open state */
.nav-menu.active {
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  width: 280px;
  height: 100vh;
  background: var(--color-white);
  padding: 80px 30px 30px;
  gap: 8px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  animation: slideIn 0.3s ease;
}

.nav-menu.active .nav-link {
  color: var(--color-dark);
  font-size: 1.1rem;
}

.nav-menu.active .nav-link:hover {
  color: var(--color-red);
}

.nav-close {
  display: none;
  position: absolute;
  top: 20px;
  right: 20px;
  background: none;
  font-size: 1.8rem;
  color: var(--color-dark);
}

.nav-menu.active .nav-close {
  display: block;
}

.nav-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 998;
}

.nav-overlay.active {
  display: block;
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
  }

  to {
    transform: translateX(0);
  }
}

/* --- Hero Section --- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--color-dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.85), rgba(13, 71, 161, 0.6), rgba(211, 47, 47, 0.4));
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  color: var(--color-white);
  padding: 100px 0 60px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 24px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: fadeInDown 0.8s ease;
}

.hero-title {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-title .highlight {
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.1rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  animation: fadeInUp 0.8s ease 0.4s both;
}

.hero-date {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
  animation: fadeInUp 0.8s ease 0.5s both;
}

.hero-libras {
  margin-top: 40px;
  animation: fadeInUp 0.8s ease 0.6s both;
}

/* Libras video placeholder */
.libras-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(8px);
  border: 2px dashed rgba(255, 255, 255, 0.3);
  border-radius: var(--radius-md);
  padding: 20px;
  max-width: 280px;
  margin: 0 auto;
  color: rgba(255, 255, 255, 0.8);
  font-size: 0.85rem;
}

.libras-placeholder .libras-icon {
  font-size: 2rem;
}

/* Section-level libras placeholder (dark bg variant) */
.libras-section-video {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  background: var(--color-off-white);
  border: 2px dashed var(--color-light-gray);
  border-radius: var(--radius-md);
  padding: 24px;
  max-width: 300px;
  margin: 20px auto 0;
  color: var(--color-gray);
  font-size: 0.85rem;
  text-align: center;
}

.libras-section-video .libras-icon {
  font-size: 2rem;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

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

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

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

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

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  align-items: center;
}

.about-text p {
  color: var(--color-gray);
  margin-bottom: 16px;
  font-size: 1rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-top: 24px;
}

.stat-item {
  text-align: center;
  padding: 16px;
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.stat-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.stat-number {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 800;
  background: var(--color-accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--color-gray);
  margin-top: 4px;
}

.about-images {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.about-images .img-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.about-images .img-card:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-md);
}

.about-images .img-card:first-child {
  grid-row: span 2;
}

.about-images .img-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* --- Agenda / Schedule Section --- */
.agenda {
  background: var(--color-off-white);
}

.agenda-tabs {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  background: var(--color-white);
  color: var(--color-gray);
  border: 2px solid var(--color-light-gray);
  transition: var(--transition);
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--color-blue);
  color: var(--color-white);
  border-color: var(--color-blue);
}

.agenda-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 800px;
  margin: 0 auto;
}

.agenda-card {
  background: var(--color-white);
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 16px;
  align-items: center;
  transition: var(--transition);
  border-left: 4px solid transparent;
}

.agenda-card:hover {
  transform: translateX(4px);
  box-shadow: var(--shadow-md);
  border-left-color: var(--color-red);
}

.agenda-time {
  text-align: center;
  min-width: 60px;
}

.agenda-time .time {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-blue);
}

.agenda-time .period {
  font-size: 0.75rem;
  color: var(--color-gray);
}

.agenda-info h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.agenda-info p {
  font-size: 0.85rem;
  color: var(--color-gray);
}

.agenda-tag {
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  white-space: nowrap;
}

.tag-teatro {
  background: var(--color-red-light);
  color: var(--color-red-dark);
}

.tag-poesia {
  background: var(--color-blue-light);
  color: var(--color-blue-dark);
}

.tag-oficina {
  background: #E8F5E9;
  color: #2E7D32;
}

.tag-exposicao {
  background: #FFF3E0;
  color: #E65100;
}

.tag-palestra {
  background: #F3E5F5;
  color: #7B1FA2;
}

.agenda-day {
  display: none;
}

.agenda-day.active {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* --- Registration / Form Section --- */
.registration {
  background: var(--color-dark);
  color: var(--color-white);
  position: relative;
  overflow: hidden;
}

.registration::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(211, 47, 47, 0.15), transparent 70%);
  border-radius: 50%;
}

.registration::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(21, 101, 192, 0.15), transparent 70%);
  border-radius: 50%;
}

.registration .section-title {
  color: var(--color-white);
}

.registration .section-subtitle {
  color: rgba(255, 255, 255, 0.7);
}

.registration .accent-line {
  background: var(--color-red);
}

.form-wrapper {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 32px 24px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 8px;
  color: rgba(255, 255, 255, 0.9);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-white);
  font-family: inherit;
  font-size: 1rem;
  transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-blue);
  box-shadow: 0 0 0 3px rgba(21, 101, 192, 0.3);
}

.form-group select option {
  background: var(--color-dark);
  color: var(--color-white);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}

.form-check {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 24px;
}

.form-check input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--color-red);
  margin-top: 2px;
  flex-shrink: 0;
}

.form-check label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
  cursor: pointer;
}

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

.form-message {
  text-align: center;
  margin-top: 16px;
  font-size: 0.9rem;
  display: none;
}

.form-message.success {
  color: #66BB6A;
  display: block;
}

.form-message.error {
  color: #EF5350;
  display: block;
}

/* --- Footer --- */
.footer {
  background: #0D1117;
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 40px;
  padding-bottom: 40px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand .footer-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.6;
}

.footer-links h4,
.footer-contact h4 {
  color: var(--color-white);
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  font-size: 0.9rem;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--color-red);
  padding-left: 4px;
}

.footer-contact p {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  margin-bottom: 8px;
}

.footer-social {
  display: flex;
  gap: 12px;
  margin-top: 16px;
}

.footer-social a {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition);
}

.footer-social a:hover {
  transform: translateY(-3px);
}

.footer-social .instagram:hover {
  background: linear-gradient(135deg, #F58529, #DD2A7B, #8134AF);
}

.footer-social .whatsapp:hover {
  background: #25D366;
}

.footer-social .youtube:hover {
  background: #FF0000;
}

.footer-bottom {
  text-align: center;
  padding: 24px 0;
  font-size: 0.8rem;
}

/* --- WhatsApp Float Button --- */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 900;
  display: flex;
  align-items: center;
  gap: 8px;
  background: #25D366;
  color: var(--color-white);
  padding: 14px 20px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9rem;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  text-decoration: none;
}

.whatsapp-float:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

.whatsapp-float .wpp-icon {
  font-size: 1.4rem;
}

.whatsapp-float .wpp-text {
  display: none;
}

/* --- Scroll animations --- */
.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   RESPONSIVE BREAKPOINTS
   ============================================ */

/* Small devices (landscape phones, 576px+) */
@media (min-width: 576px) {
  .hero-title {
    font-size: 2.8rem;
  }

  .hero-buttons {
    flex-direction: row;
    justify-content: center;
  }

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

  .whatsapp-float .wpp-text {
    display: inline;
  }
}

/* Medium devices (tablets, 768px+) */
@media (min-width: 768px) {
  .section-padding {
    padding: 80px 0;
  }

  .section-title {
    font-size: 2.2rem;
  }

  .hero-title {
    font-size: 3.2rem;
  }

  .hero-subtitle {
    font-size: 1.2rem;
  }

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

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

/* Large devices (desktops, 992px+) */
@media (min-width: 992px) {
  .nav-menu {
    display: flex !important;
    align-items: center;
    gap: 4px;
    position: static;
    width: auto;
    height: auto;
    background: none;
    padding: 0;
    box-shadow: none;
    animation: none;
  }

  .nav-menu .nav-link {
    color: var(--color-white);
    font-size: 0.95rem;
  }

  .header.scrolled .nav-menu .nav-link {
    color: var(--color-dark);
  }

  .nav-toggle {
    display: none;
  }

  .nav-close {
    display: none !important;
  }

  .nav-overlay {
    display: none !important;
  }

  .hero-title {
    font-size: 3.8rem;
  }

  .container {
    padding: 0 40px;
  }
}

/* Extra large devices (1200px+) */
@media (min-width: 1200px) {
  .hero-title {
    font-size: 4.2rem;
  }

  .section-title {
    font-size: 2.5rem;
  }
}