/* ============================================================
   main.css — Design System Global | DroneIFMA
   Cores Institucionais IFMA · Mobile-first · Dark Mode
   Verde IFMA: #6AB026 · Vermelho IFMA: #CC2529
   ============================================================ */

/* ─── 1. CUSTOM PROPERTIES (Design Tokens) ─────────────────── */
:root {
  /* Paleta de fundo escuro */
  --color-bg:          #0B1A0D;
  --color-bg-2:        #0F2212;
  --color-bg-card:     rgba(106,176,38,0.06);
  --color-bg-card-hov: rgba(106,176,38,0.11);
  --color-border:      rgba(106,176,38,0.18);
  --color-border-hov:  rgba(106,176,38,0.35);

  /* Verde IFMA — cor primária */
  --color-primary:      #6AB026;
  --color-primary-light:#8DCF3F;
  --color-primary-dark: #4A7C1A;
  --color-primary-glow: rgba(106,176,38,0.30);

  /* Vermelho IFMA — acento/destaque */
  --color-accent:      #CC2529;
  --color-accent-light:#E84448;
  --color-accent-bg:   rgba(204,37,41,0.12);

  /* Sucesso (verde mais claro) */
  --color-success:     #4CAF50;
  --color-success-bg:  rgba(76,175,80,0.12);

  /* Perigo / Erro */
  --color-danger:      #CC2529;
  --color-danger-bg:   rgba(204,37,41,0.12);

  /* Informação (dourado/amarelo para contraste no escuro) */
  --color-info:        #F5A800;
  --color-info-bg:     rgba(245,168,0,0.12);

  /* Tipografia */
  --font-main:    'Inter', system-ui, sans-serif;
  --font-heading: 'Space Grotesk', 'Inter', sans-serif;

  /* Texto */
  --text-primary:   #F1F5F9;
  --text-secondary: #94A3B8;
  --text-muted:     #64748B;

  /* Espaçamento */
  --space-xs:  4px;
  --space-sm:  8px;
  --space-md:  16px;
  --space-lg:  24px;
  --space-xl:  32px;
  --space-2xl: 48px;
  --space-3xl: 64px;

  /* Bordas */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full:9999px;

  /* Sombras */
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.3);
  --shadow-md:  0 8px 24px rgba(0,0,0,0.4);
  --shadow-lg:  0 16px 48px rgba(0,0,0,0.5);
  --shadow-glow:0 0 24px var(--color-primary-glow);

  /* Transições */
  --transition-fast:   150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow:   500ms ease;

  /* Navbar */
  --navbar-height: 60px;
  --bottom-nav-height: 64px;
}

/* ─── 2. RESET & BASE ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-main);
  background: var(--color-bg);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  background-image:
    radial-gradient(ellipse at 20% 0%,  rgba(106,176,38,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 100%, rgba(204,37,41,0.08) 0%, transparent 60%);
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary-light); text-decoration: none; transition: color var(--transition-fast); }
a:hover { color: var(--color-primary); }
button { cursor: pointer; font-family: var(--font-main); border: none; background: none; }
input, select, textarea { font-family: var(--font-main); }
h1,h2,h3,h4,h5,h6 { font-family: var(--font-heading); line-height: 1.3; color: var(--text-primary); }

/* ─── 3. SCROLLBAR PERSONALIZADA ───────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--color-bg-2); }
::-webkit-scrollbar-thumb { background: var(--color-border); border-radius: var(--radius-full); }
::-webkit-scrollbar-thumb:hover { background: var(--color-primary); }

/* ─── 4. LAYOUT PRINCIPAL ──────────────────────────────────── */
.main-content {
  padding-top: var(--navbar-height);
  padding-bottom: calc(var(--bottom-nav-height) + var(--space-lg));
  min-height: 100vh;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.page-header {
  padding: var(--space-xl) 0 var(--space-lg);
}
.page-title {
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary), var(--color-primary-light), var(--color-primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.page-subtitle {
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  font-size: 0.95rem;
}

/* ─── 5. NAVBAR ─────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--navbar-height);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-md);
  background: rgba(13,27,42,0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
}

.brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
}
.brand-icon { font-size: 1.5rem; filter: drop-shadow(0 0 8px rgba(30,111,181,0.6)); }
.brand-text { font-family: var(--font-heading); font-size: 1.2rem; font-weight: 700; 
  background: linear-gradient(90deg, #fff, var(--color-primary-light), var(--color-primary));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text; }

.navbar-actions { display: flex; align-items: center; gap: var(--space-sm); }

.btn-icon {
  width: 40px; height: 40px;
  border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.btn-icon:hover { background: var(--color-bg-card-hov); color: var(--text-primary); border-color: var(--color-primary); }

.user-avatar-mini {
  width: 36px; height: 36px; border-radius: var(--radius-full);
  border: 2px solid var(--color-primary);
  overflow: hidden; cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: 0 0 0 0 var(--color-primary-glow);
}
.user-avatar-mini:hover { box-shadow: 0 0 0 3px var(--color-primary-glow); }
.user-avatar-mini img { width: 100%; height: 100%; object-fit: cover; }

/* Dropdown do usuário */
.user-dropdown {
  position: absolute; top: calc(var(--navbar-height) - 4px); right: var(--space-md);
  background: rgba(17,34,54,0.95);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  min-width: 220px;
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  opacity: 0; visibility: hidden; transform: translateY(-8px);
  transition: all var(--transition-normal);
  z-index: 1001;
}
.user-dropdown.open { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-header { padding: var(--space-md); border-bottom: 1px solid var(--color-border); }
.dropdown-header strong { display: block; font-size: 0.9rem; color: var(--text-primary); }
.dropdown-header span { font-size: 0.75rem; color: var(--text-muted); }
.dropdown-item {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  color: var(--text-secondary); font-size: 0.9rem;
  transition: all var(--transition-fast);
}
.dropdown-item:hover { background: var(--color-bg-card-hov); color: var(--text-primary); }
.dropdown-danger:hover { color: var(--color-danger); }

/* ─── 6. BOTTOM NAVIGATION ─────────────────────────────────── */
.bottom-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  height: var(--bottom-nav-height);
  z-index: 1000;
  display: flex;
  background: rgba(13,27,42,0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--color-border);
}

.bottom-nav-item {
  flex: 1; display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  gap: 2px; color: var(--text-muted);
  font-size: 0.65rem; font-weight: 500;
  text-decoration: none;
  transition: all var(--transition-fast);
  padding: var(--space-xs);
  position: relative;
}
.bottom-nav-item svg { width: 22px; height: 22px; stroke: currentColor; }
.bottom-nav-item.active { color: var(--color-primary-light); }
.bottom-nav-item.active::before {
  content: ''; position: absolute; top: 0; left: 20%; right: 20%;
  height: 2px; background: var(--color-primary-light);
  border-radius: 0 0 var(--radius-full) var(--radius-full);
}
.bottom-nav-item:hover { color: var(--color-primary-light); }

/* ─── 7. CARDS ──────────────────────────────────────────────── */
.card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  transition: all var(--transition-normal);
  backdrop-filter: blur(10px);
}
.card:hover { background: var(--color-bg-card-hov); border-color: var(--color-border-hov); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.card-glass {
  background: rgba(255,255,255,0.05);
  backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
}

/* ─── 8. BOTÕES ─────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  gap: var(--space-sm); padding: 10px 20px;
  border-radius: var(--radius-md); font-size: 0.9rem; font-weight: 600;
  transition: all var(--transition-normal); text-decoration: none;
  border: none; cursor: pointer; line-height: 1;
  white-space: nowrap;
}
.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff; box-shadow: 0 4px 15px var(--color-primary-glow);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 25px var(--color-primary-glow); color: #fff; }

.btn-accent {
  background: linear-gradient(135deg, var(--color-accent), #D97706);
  color: #1a1a1a; box-shadow: 0 4px 15px rgba(245,158,11,0.3);
}
.btn-accent:hover { transform: translateY(-2px); box-shadow: 0 8px 25px rgba(245,158,11,0.4); color: #1a1a1a; }

.btn-success {
  background: linear-gradient(135deg, var(--color-success), #16A34A);
  color: #fff; box-shadow: 0 4px 15px rgba(34,197,94,0.3);
}
.btn-success:hover { transform: translateY(-2px); color: #fff; }

.btn-danger {
  background: linear-gradient(135deg, var(--color-danger), #DC2626);
  color: #fff; box-shadow: 0 4px 15px rgba(239,68,68,0.3);
}
.btn-danger:hover { transform: translateY(-2px); color: #fff; }

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

.btn-ghost { background: transparent; color: var(--text-secondary); }
.btn-ghost:hover { color: var(--text-primary); background: var(--color-bg-card); }

.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-sm { padding: 6px 14px; font-size: 0.8rem; }
.btn-full { width: 100%; }

/* ─── 9. FORMULÁRIOS ────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: var(--space-xs); margin-bottom: var(--space-md); }
.form-label { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.form-control {
  width: 100%; padding: 10px 14px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--text-primary); font-size: 0.95rem;
  transition: all var(--transition-fast);
}
.form-control:focus { outline: none; border-color: var(--color-primary); box-shadow: 0 0 0 3px var(--color-primary-glow); }
.form-control::placeholder { color: var(--text-muted); }
.form-control:disabled { opacity: 0.5; cursor: not-allowed; }

textarea.form-control { resize: vertical; min-height: 100px; }
select.form-control { appearance: none; cursor: pointer; }

.form-hint { font-size: 0.75rem; color: var(--text-muted); }
.form-error { font-size: 0.75rem; color: var(--color-danger); }

/* ─── 10. PROGRESS BAR ──────────────────────────────────────── */
.progress-bar {
  height: 6px; background: rgba(255,255,255,0.08);
  border-radius: var(--radius-full); overflow: hidden;
}
.progress-fill {
  height: 100%; border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-light));
  transition: width var(--transition-slow);
  position: relative; overflow: hidden;
}
.progress-fill::after {
  content: '';
  position: absolute; top: 0; left: -100%; width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
  animation: shimmer 2s infinite;
}

.progress-lg { height: 10px; }
.progress-label {
  display: flex; justify-content: space-between;
  font-size: 0.75rem; color: var(--text-muted); margin-bottom: 4px;
}

/* ─── 11. BADGES / TAGS ─────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 10px; border-radius: var(--radius-full);
  font-size: 0.72rem; font-weight: 600; white-space: nowrap;
}
.badge-primary { background: var(--color-primary-glow); color: var(--color-primary-light); border: 1px solid rgba(30,111,181,0.3); }
.badge-success { background: var(--color-success-bg); color: var(--color-success); border: 1px solid rgba(34,197,94,0.3); }
.badge-accent  { background: var(--color-accent-bg);  color: var(--color-accent);  border: 1px solid rgba(245,158,11,0.3); }
.badge-danger  { background: var(--color-danger-bg);  color: var(--color-danger);  border: 1px solid rgba(239,68,68,0.3); }
.badge-info    { background: var(--color-info-bg);    color: var(--color-info);    border: 1px solid rgba(139,92,246,0.3); }

/* ─── 12. CHATBOT ───────────────────────────────────────────── */
.chatbot-container {
  position: fixed; bottom: calc(var(--bottom-nav-height) + 12px); right: 16px;
  width: min(360px, calc(100vw - 32px)); height: 480px;
  max-height: calc(100vh - var(--navbar-height) - var(--bottom-nav-height) - 24px);
  background: rgba(13,27,42,0.97);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  display: flex; flex-direction: column;
  backdrop-filter: blur(30px); -webkit-backdrop-filter: blur(30px);
  box-shadow: var(--shadow-lg), 0 0 30px var(--color-primary-glow);
  z-index: 999;
  transform: translateY(20px) scale(0.95);
  opacity: 0; visibility: hidden;
  transition: all var(--transition-normal);
}
.chatbot-container.open {
  transform: translateY(0) scale(1);
  opacity: 1; visibility: visible;
}

.chatbot-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  background: linear-gradient(135deg, rgba(30,111,181,0.15), rgba(139,92,246,0.10));
  border-radius: var(--radius-xl) var(--radius-xl) 0 0;
}
.chatbot-title { display: flex; align-items: center; gap: var(--space-sm); }
.chatbot-icon { font-size: 1.8rem; }
.chatbot-title strong { display: block; font-size: 0.95rem; }
.chatbot-title small { color: var(--text-muted); font-size: 0.72rem; }
.chatbot-close {
  width: 30px; height: 30px; border-radius: var(--radius-full);
  display: flex; align-items: center; justify-content: center;
  background: var(--color-bg-card); color: var(--text-muted);
  font-size: 0.9rem; transition: all var(--transition-fast);
}
.chatbot-close:hover { background: var(--color-danger-bg); color: var(--color-danger); }

.chatbot-messages {
  flex: 1; overflow-y: auto; padding: var(--space-md);
  display: flex; flex-direction: column; gap: var(--space-sm);
}
.chat-msg { display: flex; }
.chat-msg.bot { justify-content: flex-start; }
.chat-msg.user { justify-content: flex-end; }
.chat-bubble {
  max-width: 80%; padding: 10px 14px;
  border-radius: var(--radius-md);
  font-size: 0.875rem; line-height: 1.5;
}
.chat-msg.bot .chat-bubble {
  background: rgba(30,111,181,0.15);
  border: 1px solid rgba(30,111,181,0.2);
  border-radius: 4px var(--radius-md) var(--radius-md) var(--radius-md);
}
.chat-msg.user .chat-bubble {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff;
  border-radius: var(--radius-md) 4px var(--radius-md) var(--radius-md);
}
.chat-typing { display: flex; gap: 4px; align-items: center; padding: 10px 14px; }
.chat-dot {
  width: 6px; height: 6px; border-radius: 50%; background: var(--color-primary-light);
  animation: bounce 1.2s infinite;
}
.chat-dot:nth-child(2) { animation-delay: 0.2s; }
.chat-dot:nth-child(3) { animation-delay: 0.4s; }

.chatbot-suggestions {
  display: flex; gap: var(--space-xs); padding: 0 var(--space-md) var(--space-xs);
  flex-wrap: wrap;
}
.suggestion-chip {
  padding: 5px 12px; border-radius: var(--radius-full);
  background: rgba(30,111,181,0.10); border: 1px solid rgba(30,111,181,0.25);
  color: var(--color-primary-light); font-size: 0.72rem; white-space: nowrap;
  transition: all var(--transition-fast); cursor: pointer;
}
.suggestion-chip:hover { background: rgba(30,111,181,0.25); }

.chatbot-input {
  display: flex; gap: var(--space-sm); padding: var(--space-md);
  border-top: 1px solid var(--color-border);
}
.chatbot-input input {
  flex: 1; padding: 10px 14px; border-radius: var(--radius-full);
  background: rgba(255,255,255,0.05); border: 1px solid var(--color-border);
  color: var(--text-primary); font-size: 0.875rem;
}
.chatbot-input input:focus { outline: none; border-color: var(--color-primary); }
.chatbot-input button {
  width: 40px; height: 40px; flex-shrink: 0; border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #fff; display: flex; align-items: center; justify-content: center;
  transition: all var(--transition-fast); box-shadow: 0 4px 12px var(--color-primary-glow);
}
.chatbot-input button:hover { transform: scale(1.05); }

/* ─── 13. TOAST NOTIFICATIONS ───────────────────────────────── */
.toast-container {
  position: fixed; top: calc(var(--navbar-height) + 12px); right: 16px;
  z-index: 2000; display: flex; flex-direction: column; gap: var(--space-sm);
}
.toast {
  display: flex; align-items: center; gap: var(--space-sm);
  padding: 12px 16px; border-radius: var(--radius-md);
  background: rgba(17,34,54,0.97); backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-md); min-width: 240px; max-width: 320px;
  transform: translateX(120%); transition: transform var(--transition-normal);
  font-size: 0.875rem;
}
.toast.show { transform: translateX(0); }
.toast-success { border-left: 3px solid var(--color-success); }
.toast-error   { border-left: 3px solid var(--color-danger); }
.toast-info    { border-left: 3px solid var(--color-primary); }

/* ─── 14. LOADING / DRONE LOADER ────────────────────────────── */
.loading-overlay {
  position: fixed; inset: 0; z-index: 9999;
  background: rgba(13,27,42,0.9); backdrop-filter: blur(10px);
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--space-lg);
  opacity: 0; visibility: hidden; transition: all var(--transition-normal);
}
.loading-overlay.show { opacity: 1; visibility: visible; }
.loading-overlay p { color: var(--text-secondary); font-size: 0.9rem; }

.drone-loader {
  width: 80px; height: 80px; position: relative;
  animation: droneFloat 2s ease-in-out infinite;
}
.drone-body {
  width: 30px; height: 16px; background: var(--color-primary);
  border-radius: 6px; position: absolute;
  top: 50%; left: 50%; transform: translate(-50%, -50%);
  box-shadow: 0 0 20px var(--color-primary-glow);
}
.drone-arm {
  position: absolute; width: 44%; height: 2px;
  background: var(--text-muted); border-radius: 1px;
}
.arm-1 { top: 30%; left: 5%; transform: rotate(-45deg); }
.arm-2 { top: 30%; right: 5%; transform: rotate(45deg); }
.arm-3 { bottom: 30%; left: 5%; transform: rotate(45deg); }
.arm-4 { bottom: 30%; right: 5%; transform: rotate(-45deg); }
.drone-prop {
  width: 12px; height: 12px; border-radius: 50%;
  border: 2px solid var(--color-primary-light);
  position: absolute; top: -6px; left: -6px;
  animation: spin 0.5s linear infinite;
  box-shadow: 0 0 8px var(--color-primary-glow);
}
.arm-2 .drone-prop, .arm-3 .drone-prop { animation-direction: reverse; }

/* ─── 15. GRID E UTILITÁRIOS ────────────────────────────────── */
.grid { display: grid; gap: var(--space-md); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.flex-col { display: flex; flex-direction: column; }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }

.text-center { text-align: center; }
.text-muted { color: var(--text-muted); }
.text-secondary { color: var(--text-secondary); }
.text-primary-color { color: var(--color-primary-light); }
.text-success { color: var(--color-success); }
.text-danger { color: var(--color-danger); }
.text-accent { color: var(--color-accent); }

.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.w-full { width: 100%; }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; overflow: hidden; clip: rect(0,0,0,0); }

/* Divider */
.divider { height: 1px; background: var(--color-border); margin: var(--space-lg) 0; }

/* Section title */
.section-title { font-size: 1.1rem; font-weight: 700; color: var(--text-primary); margin-bottom: var(--space-md); display: flex; align-items: center; gap: var(--space-sm); }
.section-title::after { content: ''; flex: 1; height: 1px; background: var(--color-border); }

/* ─── 16. FOOTER ────────────────────────────────────────────── */
.site-footer {
  display: none; /* escondido em mobile (substituído pelo bottom-nav) */
  padding: var(--space-xl) var(--space-md) var(--space-3xl);
  text-align: center; border-top: 1px solid var(--color-border);
}
.footer-logo { font-size: 1.5rem; font-weight: 700; margin-bottom: var(--space-sm); }
.footer-text { color: var(--text-muted); font-size: 0.8rem; line-height: 1.8; margin-bottom: var(--space-sm); }
.footer-copy { color: var(--text-muted); font-size: 0.75rem; }

/* ─── 17. ANIMAÇÕES ─────────────────────────────────────────── */
@keyframes shimmer {
  0% { left: -100%; } 100% { left: 200%; }
}
@keyframes spin {
  from { transform: rotate(0deg); } to { transform: rotate(360deg); }
}
@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); opacity: 0.3; }
  40%           { transform: scale(1); opacity: 1; }
}
@keyframes droneFloat {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-8px); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes pulse {
  0%, 100% { opacity: 1; } 50% { opacity: 0.5; }
}

.animate-fade-up { animation: fadeInUp var(--transition-slow) ease forwards; }
.animate-pulse { animation: pulse 2s ease-in-out infinite; }

/* Staggered animation for cards */
.card:nth-child(1) { animation-delay: 0ms; }
.card:nth-child(2) { animation-delay: 80ms; }
.card:nth-child(3) { animation-delay: 160ms; }
.card:nth-child(4) { animation-delay: 240ms; }

/* ─── 18. RESPONSIVIDADE ────────────────────────────────────── */
@media (min-width: 768px) {
  .container { padding: 0 var(--space-xl); }
  .grid-2-md { grid-template-columns: repeat(2, 1fr); }
  .site-footer { display: block; }
}

@media (min-width: 1024px) {
  :root { --bottom-nav-height: 0px; }
  .bottom-nav { display: none; }
  .main-content { padding-bottom: var(--space-lg); }
  .chatbot-container { bottom: 24px; }
  .grid-3-lg { grid-template-columns: repeat(3, 1fr); }
  .grid-4-lg { grid-template-columns: repeat(4, 1fr); }
}

/* ─── 19. ESTADO VAZIO ──────────────────────────────────────── */
.empty-state {
  text-align: center; padding: var(--space-3xl) var(--space-lg);
  color: var(--text-muted);
}
.empty-state-icon { font-size: 3rem; margin-bottom: var(--space-md); opacity: 0.5; }
.empty-state h3 { color: var(--text-secondary); margin-bottom: var(--space-sm); }

/* ─── 20. MÓDULO / AULA CARDS ───────────────────────────────── */
.modulo-card { border-left: 3px solid var(--color-primary); }
.modulo-card:hover { border-left-color: var(--color-primary-light); }
.aula-type-icon { width: 40px; height: 40px; border-radius: var(--radius-md); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
.aula-type-video    { background: rgba(239,68,68,0.15); }
.aula-type-slide    { background: rgba(245,158,11,0.15); }
.aula-type-texto    { background: rgba(30,111,181,0.15); }
.aula-type-documento{ background: rgba(34,197,94,0.15); }

/* ─── 21. LOGOTIPO SVG PROFISSIONAL ───────────────────────── */
.logo-svg {
  width: 28px;
  height: 28px;
  color: var(--color-primary-light);
  filter: drop-shadow(0 0 8px var(--color-primary-glow));
  vertical-align: middle;
  transition: transform var(--transition-normal);
  flex-shrink: 0;
}
.brand-link:hover .logo-svg, 
.landing-logo:hover .logo-svg,
.footer-logo:hover .logo-svg {
  transform: rotate(45deg);
}

.brand-icon, .logo-icon, .footer-logo span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Correção de contraste e legibilidade para os dropdowns nativos do select no painel escuro */
select option {
  background-color: var(--color-bg-alt, #1e293b);
  color: var(--color-text, #f8fafc);
}