/* =========================================================
   GameDev Web — página de materiais das aulas
   ========================================================= */

:root {
  --bg-deep: #070b16;
  --bg-panel: rgba(10, 18, 36, 0.82);
  --bg-panel-solid: #0c1428;
  --line: rgba(0, 229, 255, 0.28);
  --text: #e8f4ff;
  --muted: #9bb4cc;
  --neon-green: #7cff3a;
  --neon-cyan: #00e5ff;
  --neon-blue: #3aa7ff;
  --html: #e44d26;
  --css: #264de4;
  --js: #f7df1e;
  --aula: #00aeef;
  --tema: #00a651;
  --pratico: #f7941e;
  --entrega: #c44db8;
  --radius: 1rem;
  --shadow-glow: 0 0 28px rgba(0, 229, 255, 0.18);
  --font-display: "Orbitron", sans-serif;
  --font-body: "Outfit", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background:
    radial-gradient(ellipse 80% 50% at 10% -10%, rgba(0, 229, 255, 0.14), transparent 55%),
    radial-gradient(ellipse 60% 40% at 90% 10%, rgba(124, 255, 58, 0.08), transparent 50%),
    linear-gradient(180deg, #050814 0%, var(--bg-deep) 40%, #0a1224 100%);
  min-height: 100vh;
  line-height: 1.6;
}

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

a {
  color: var(--neon-cyan);
  text-decoration: none;
}

a:hover {
  color: var(--neon-green);
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: 1rem;
  z-index: 2000;
  background: var(--neon-cyan);
  color: #031018;
  padding: 0.5rem 0.85rem;
  border-radius: 0.4rem;
}

/* ----- Nav ----- */
.site-nav {
  background: rgba(5, 8, 20, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.brand-logo {
  width: auto;
  height: 64px;
  object-fit: contain;
  filter: drop-shadow(0 0 10px rgba(58, 167, 255, 0.35));
}

.nav-professor-site {
  align-items: center;
  gap: 0.35rem;
  margin-left: 0.35rem;
  margin-right: auto;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(58, 167, 255, 0.4);
  color: var(--neon-blue);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.nav-professor-site i {
  font-size: 0.75rem;
}

.nav-professor-site:hover,
.nav-professor-site:focus-visible {
  color: var(--neon-cyan);
  border-color: var(--neon-cyan);
  background: rgba(0, 229, 255, 0.08);
  box-shadow: 0 0 14px rgba(0, 229, 255, 0.2);
  outline: none;
}

.navbar-toggler {
  border-color: var(--line);
}

.navbar-toggler-icon {
  filter: invert(1) brightness(1.2);
}

.site-nav .nav-link {
  color: var(--muted);
  font-weight: 500;
  padding: 0.55rem 0.9rem;
  transition: color 0.2s ease;
}

.site-nav .nav-link:hover,
.site-nav .nav-link:focus {
  color: var(--neon-cyan);
}

.btn-nav-cta {
  background: linear-gradient(135deg, rgba(124, 255, 58, 0.18), rgba(0, 229, 255, 0.18));
  border: 1px solid rgba(124, 255, 58, 0.45);
  border-radius: 999px;
  color: var(--text) !important;
  margin-left: 0.25rem;
}

.btn-nav-cta:hover {
  border-color: var(--neon-green);
  box-shadow: 0 0 18px rgba(124, 255, 58, 0.25);
}

/* ----- Hero ----- */
.hero {
  position: relative;
  min-height: min(92vh, 820px);
  display: flex;
  align-items: center;
  overflow: hidden;
  isolation: isolate;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    url("../assets/banner-curso.png") center / cover no-repeat;
  transform: scale(1.02);
  animation: heroDrift 18s ease-in-out infinite alternate;
  z-index: -2;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(5, 8, 20, 0.55) 0%, rgba(5, 8, 20, 0.72) 45%, rgba(5, 8, 20, 0.94) 100%),
    radial-gradient(circle at 70% 40%, rgba(0, 229, 255, 0.12), transparent 45%);
  z-index: -1;
}

.hero-content {
  position: relative;
  padding-top: 4rem;
  padding-bottom: 3.5rem;
  text-align: center;
  animation: fadeUp 0.9s ease both;
}

.hero-badge {
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.35rem 1rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--neon-cyan);
  font-size: 0.85rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: rgba(0, 229, 255, 0.08);
}

.hero-title {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2.4rem, 8vw, 4.6rem);
  letter-spacing: 0.02em;
  line-height: 1.05;
  margin-bottom: 0.85rem;
}

.title-gamedev {
  color: var(--neon-green);
  text-shadow:
    0 0 12px rgba(124, 255, 58, 0.55),
    0 0 36px rgba(124, 255, 58, 0.25);
}

.title-web {
  color: #fff;
  text-shadow: 0 0 18px rgba(0, 229, 255, 0.45);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  color: var(--text);
  max-width: 38rem;
  margin: 0 auto 1rem;
  font-weight: 400;
}

.hero-tagline {
  display: inline-block;
  margin: 0 auto 1.75rem;
  padding: 0.55rem 1.35rem;
  border-radius: 999px;
  background: linear-gradient(90deg, #5edb2a, #8cff4a);
  color: #0a1a05;
  font-weight: 700;
  font-size: 0.95rem;
  box-shadow: 0 0 24px rgba(124, 255, 58, 0.35);
  animation: pulseGlow 2.8s ease-in-out infinite;
}

.hero-actions {
  margin-bottom: 1.75rem;
}

.btn-neon {
  --bs-btn-color: #04120a;
  --bs-btn-bg: var(--neon-green);
  --bs-btn-border-color: var(--neon-green);
  --bs-btn-hover-bg: #9dff66;
  --bs-btn-hover-border-color: #9dff66;
  --bs-btn-hover-color: #04120a;
  --bs-btn-active-bg: #6be02f;
  --bs-btn-active-border-color: #6be02f;
  --bs-btn-active-color: #04120a;
  font-weight: 700;
  border-radius: 999px;
  padding-inline: 1.6rem;
  box-shadow: 0 0 22px rgba(124, 255, 58, 0.35);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-neon:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(124, 255, 58, 0.5);
}

.stack-pill {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  border-radius: 0.55rem;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.stack-html {
  background: rgba(228, 77, 38, 0.15);
  border-color: rgba(228, 77, 38, 0.55);
  color: #ffb39a;
}

.stack-css {
  background: rgba(38, 77, 228, 0.18);
  border-color: rgba(90, 140, 255, 0.55);
  color: #a8c4ff;
}

.stack-js {
  background: rgba(247, 223, 30, 0.12);
  border-color: rgba(247, 223, 30, 0.5);
  color: #ffe96a;
}

/* ----- CodeArena highlight ----- */
.codearena-link {
  display: block;
  position: relative;
  max-width: 820px;
  margin: 2.25rem auto 0;
  border-radius: 1rem;
  overflow: hidden;
  border: 1px solid rgba(0, 229, 255, 0.4);
  box-shadow: 0 0 28px rgba(0, 229, 255, 0.22);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  color: inherit;
}

.codearena-link:hover,
.codearena-link:focus-visible {
  transform: translateY(-4px);
  border-color: var(--neon-green);
  box-shadow: 0 0 36px rgba(124, 255, 58, 0.28);
  color: inherit;
  outline: none;
}

.codearena-banner {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  object-fit: cover;
}

.codearena-cta {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.7rem 1rem;
  background: linear-gradient(180deg, transparent, rgba(4, 10, 22, 0.92));
  color: var(--neon-cyan);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
}

.codearena-link:hover .codearena-cta {
  color: var(--neon-green);
}

/* ----- Sections ----- */
.section-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.55rem, 3.5vw, 2.15rem);
  margin-bottom: 0.85rem;
  color: #fff;
  text-shadow: 0 0 18px rgba(0, 229, 255, 0.25);
}

.section-kicker {
  color: var(--neon-cyan);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.78rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.section-lead {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 40rem;
}

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

.motto {
  color: var(--neon-green);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  font-size: 0.85rem;
  font-weight: 600;
}

.process-bar {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--bg-panel);
  box-shadow: var(--shadow-glow);
}

.process-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.process-item i {
  font-size: 1.35rem;
  color: var(--neon-cyan);
}

/* ----- Lesson cards ----- */
.aula-card {
  height: 100%;
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.35rem 1.25rem 1.25rem;
  box-shadow: var(--shadow-glow);
  transition: transform 0.25s ease, border-color 0.25s ease, box-shadow 0.25s ease;
  animation: fadeUp 0.7s ease both;
}

.aula-card:hover {
  transform: translateY(-4px);
  border-color: rgba(124, 255, 58, 0.45);
  box-shadow: 0 0 34px rgba(0, 229, 255, 0.22);
}

.aula-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3.1rem;
  height: 2rem;
  padding: 0 0.7rem;
  border-radius: 0.45rem;
  background: var(--aula);
  color: #031018;
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.85rem;
}

.aula-tema {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 1rem;
  color: #fff;
}

.meta-block {
  margin-bottom: 0.85rem;
}

.meta-label {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 0.35rem;
  margin-bottom: 0.35rem;
}

.meta-label.pratico {
  background: rgba(247, 148, 30, 0.2);
  color: #ffc27a;
  border: 1px solid rgba(247, 148, 30, 0.45);
}

.meta-label.entrega {
  background: rgba(196, 77, 184, 0.18);
  color: #f0a6e6;
  border: 1px solid rgba(196, 77, 184, 0.45);
}

.meta-text {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.aula-actions {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 0.65rem;
  margin-top: 1.15rem;
}

.btn-material {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  width: 100%;
  padding: 0.65rem 0.75rem;
  border-radius: 0.65rem;
  font-weight: 600;
  font-size: 0.9rem;
  border: 1px solid transparent;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn-material i {
  font-size: 1.05rem;
}

.btn-materiais {
  background: rgba(0, 229, 255, 0.12);
  border-color: rgba(0, 229, 255, 0.45);
  color: var(--neon-cyan);
}

.btn-materiais:hover {
  background: rgba(0, 229, 255, 0.22);
  color: #fff;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.25);
}

.btn-video {
  background: rgba(247, 148, 30, 0.12);
  border-color: rgba(247, 148, 30, 0.5);
  color: #ffc27a;
}

.btn-video:hover {
  background: rgba(247, 148, 30, 0.22);
  color: #fff;
  box-shadow: 0 0 16px rgba(247, 148, 30, 0.28);
}

.btn-material.is-disabled,
.btn-material:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}

/* ----- Formulário de entregas ----- */
.section-entregas {
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, rgba(124, 255, 58, 0.06), transparent 55%),
    transparent;
}

/* ----- Certificados ----- */
.section-certificados {
  background:
    radial-gradient(ellipse 70% 55% at 50% 0%, rgba(58, 167, 255, 0.1), transparent 55%),
    transparent;
}

.certificado-frame {
  margin: 0;
  padding: 1rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: var(--bg-panel);
  box-shadow: var(--shadow-glow);
  text-align: center;
}

.certificado-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: 0.65rem;
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.35);
}

.certificado-caption {
  margin-top: 0.9rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.entrega-form {
  background: var(--bg-panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  box-shadow: var(--shadow-glow);
}

.entrega-form .form-label,
.entrega-form legend.form-label {
  color: var(--text);
  font-weight: 600;
  font-size: 0.92rem;
}

.entrega-tipo {
  margin: 0;
  padding: 0;
  border: 0;
}

.tipo-opcoes {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
}

.entrega-form .form-check-label {
  color: var(--muted);
  cursor: pointer;
}

.entrega-form .form-check-input {
  background-color: #0a1428;
  border-color: rgba(0, 229, 255, 0.45);
  cursor: pointer;
}

.entrega-form .form-check-input:checked {
  background-color: var(--neon-green);
  border-color: var(--neon-green);
}

.form-control-dark,
.form-select.form-control-dark {
  background-color: rgba(4, 10, 22, 0.85);
  border: 1px solid rgba(0, 229, 255, 0.28);
  color: var(--text);
  border-radius: 0.65rem;
  padding: 0.7rem 0.9rem;
}

.form-control-dark::placeholder {
  color: rgba(155, 180, 204, 0.55);
}

.form-control-dark:focus,
.form-select.form-control-dark:focus {
  background-color: rgba(4, 10, 22, 0.95);
  border-color: var(--neon-cyan);
  color: var(--text);
  box-shadow: 0 0 0 0.2rem rgba(0, 229, 255, 0.18);
}

.form-select.form-control-dark option {
  background: #0a1428;
  color: var(--text);
}

.entrega-form .form-text {
  color: var(--muted);
  font-size: 0.85rem;
}

.entrega-form code {
  color: var(--neon-green);
  font-size: 0.9em;
}

.projeto-aviso {
  display: flex;
  gap: 0.85rem;
  align-items: flex-start;
  padding: 1rem 1.1rem;
  border-radius: 0.75rem;
  border: 1px solid rgba(124, 255, 58, 0.4);
  background: rgba(124, 255, 58, 0.08);
  color: var(--muted);
}

.projeto-aviso i {
  font-size: 1.5rem;
  color: var(--neon-green);
  margin-top: 0.1rem;
}

.projeto-aviso strong {
  display: block;
  color: #fff;
  margin-bottom: 0.2rem;
}

.form-feedback {
  border-radius: 0.65rem;
  padding: 0.85rem 1rem;
  font-weight: 500;
}

.form-feedback.is-sucesso {
  background: rgba(124, 255, 58, 0.12);
  border: 1px solid rgba(124, 255, 58, 0.4);
  color: var(--neon-green);
}

.form-feedback.is-erro {
  background: rgba(255, 80, 80, 0.12);
  border: 1px solid rgba(255, 100, 100, 0.4);
  color: #ff9a9a;
}

.form-feedback.is-info {
  background: rgba(0, 229, 255, 0.1);
  border: 1px solid rgba(0, 229, 255, 0.35);
  color: var(--neon-cyan);
}

.btn-enviar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

/* ----- Footer ----- */
.site-footer {
  margin-top: 2rem;
  border-top: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(0, 229, 255, 0.05), transparent 40%),
    #04070f;
  padding: 2.5rem 0 2rem;
}

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

.footer-logo {
  height: 72px;
  width: auto;
  margin-bottom: 1rem;
  opacity: 0.95;
  filter: drop-shadow(0 0 10px rgba(58, 167, 255, 0.3));
}

.footer-copy {
  color: var(--muted);
  font-size: 0.95rem;
}

.footer-handle {
  font-family: var(--font-display);
  color: var(--neon-cyan);
  font-size: 1.05rem;
  letter-spacing: 0.04em;
  text-shadow: 0 0 14px rgba(0, 229, 255, 0.35);
}

.footer-tag {
  margin-top: 0.5rem;
  color: var(--neon-green);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ----- Animations ----- */
@keyframes fadeUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulseGlow {
  0%,
  100% {
    box-shadow: 0 0 18px rgba(124, 255, 58, 0.28);
  }
  50% {
    box-shadow: 0 0 30px rgba(124, 255, 58, 0.5);
  }
}

@keyframes heroDrift {
  from {
    transform: scale(1.02) translate3d(0, 0, 0);
  }
  to {
    transform: scale(1.06) translate3d(-1.2%, 0.8%, 0);
  }
}

/* ----- Responsive ----- */
@media (max-width: 991.98px) {
  .process-bar {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .brand-logo {
    height: 54px;
  }
}

@media (max-width: 575.98px) {
  .process-bar {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .aula-actions {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: auto;
  }

  .hero-content {
    padding-top: 3rem;
    padding-bottom: 2.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .hero-bg,
  .hero-tagline,
  .aula-card,
  .hero-content {
    animation: none !important;
  }
}