/* Reset e configurações base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Cores principais */
  --primary-green: #00742b;
  --secondary-green: #005a21;
  --accent-green: #008f35;
  --primary-yellow: #ffbc00;
  --secondary-yellow: #ffb800;
  --dark-green: #005232;

  /* Tipografia */
  --font-family: "Roboto", sans-serif;
  --font-size-base: 1rem;
  --font-size-small: 0.875rem;
  --font-size-large: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 3rem;
  --font-size-4xl: 4rem;

  /* Espaçamentos */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Bordas */
  --border-radius-sm: 0.25rem;
  --border-radius-md: 0.5rem;
  --border-radius-lg: 0.75rem;
  --border-radius-xl: 1rem;

  /* Sombras */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

  /* Transições */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

/* Configurações globais */
html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-family);
  color: white;
  line-height: 1.6;
  background: linear-gradient(
    -45deg,
    var(--primary-green),
    var(--secondary-green),
    var(--primary-green),
    var(--accent-green)
  );
  background-size: 400% 400%;
  animation: gradientShift 15s ease infinite;
  min-height: 100vh;
  overflow-x: hidden;
}

/* Layout principal */
#content {
  display: flex;
  min-height: 100vh;
  position: relative;
  background: url("images/degrade.png") no-repeat center center;
  background-size: cover;
}

/* Seção de introdução */
#introduction {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  flex: 1;
  min-height: 100vh;
  position: relative;
  padding: var(--spacing-xl);
  z-index: 2;
}

.intro-content {
  max-width: 130vh;
  text-align: center;
  z-index: 3;
}

#introduction h1 {
  font-size: clamp(var(--font-size-2xl), 5vw, var(--font-size-4xl));
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: var(--spacing-xl);
  text-align: left;
  animation: fadeInUp 1s ease-out;
}

#introduction h1 strong {
  font-weight: 900;
  display: block;
  margin-top: var(--spacing-sm);
}

.logo-container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--spacing-xl);
}

#logo-sitec {
  max-width: 75%;
  height: auto;
  animation: scaleIn 1.2s ease-out 0.3s both;
  transition: transform var(--transition-normal);
}

#logo-sitec:hover {
  transform: scale(1.05);
}

/* Área dos cards */
#card-area {
  background: var(--primary-yellow);
  min-width: 400px;
  max-width: 400px;
  display: flex;
  flex-direction: column;
  justify-content: start;
  align-items: center;
  position: relative;
  padding: var(--spacing-xl);
  z-index: 1;
  box-shadow: rgba(0, 0, 0, 0.56) 0px 22px 70px 4px;
  border: solid 1px var(--primary-yellow);
}

.cards-container {
  width: 100%;
  max-width: 350px;
  z-index: 3;
}

/* Cards */
.cards {
  background-image: url(images/card_a.jpg);
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
  border-radius: var(--border-radius-xl);
  padding: var(--spacing-xl);
  display: flex;
  flex-direction: row;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  animation: fadeInRight 0.8s ease-out 0.4s both;
  z-index: 2;
  right: 260px;
  width: 550px;
  height: 235px;
}

.cards::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.2));
  z-index: 1;
}

.card-content {
  position: relative;
  z-index: 2;
}

.cards:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.card-title {
  font-size: xx-large;
  font-weight: 900;
  margin-bottom: var(--spacing-sm);
  user-select: none;
}

.card-text {
  font-size: clamp(var(--font-size-small), 2vw, var(--font-size-base));
  margin-bottom: var(--spacing-lg);
  line-height: 1.5;
  user-select: none;
  max-width: 85%;
}

#btn-moodle {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  text-decoration: none;
}

.card-btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--dark-green);
  background-color: var(--secondary-yellow);
  border: none;
  border-radius: var(--border-radius-md);
  font-weight: 900;
  font-size: var(--font-size-base);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  align-self: flex-start;
  position: relative;
  overflow: hidden;
}

.card-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  background-color: #ffa500;
}

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

/* Elementos decorativos */
.elementor-decoration {
  position: absolute;
  pointer-events: none;
  z-index: 1;
}

#elementor-01 {
  top: -150px;
  right: -340px;
  width: 1500px;
  height: 200px;
}

#elementor-02 {
  bottom: 43px;
  left: -100px;
  width: 500px;
  height: 150px;
  z-index: 1;
  position: fixed;
}

#seta-cheia,
#seta-vazada {
  width: 100%;
  height: auto;
  transition: opacity var(--transition-normal);
}

/* Loading overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--primary-green);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  opacity: 1;
  transition: opacity var(--transition-slow);
}

.loading-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top: 3px solid white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Animações */
@keyframes gradientShift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* RESPONSIVIDADE */

/* Tablets grandes (1024px - 1200px) */
@media only screen and (max-width: 1200px) {
  #card-area {
    min-width: 350px;
    max-width: 350px;
  }

  #introduction h1 {
    font-size: clamp(var(--font-size-xl), 4vw, var(--font-size-3xl));
  }
}

/* Tablets (768px - 1024px) */
@media only screen and (max-width: 1024px) {
  #content {
    flex-direction: column;
    min-height: auto;
  }

  #introduction {
    min-height: 60vh;
    padding: var(--spacing-lg);
  }

  #introduction h1 {
    text-align: center;
    font-size: clamp(var(--font-size-xl), 4vw, var(--font-size-2xl));
  }

  #card-area {
    min-width: 100%;
    max-width: 100%;
    min-height: 40vh;
    padding: var(--spacing-xl) var(--spacing-lg);
  }

  .cards-container {
    max-width: 500px;
  }

  .cards {
    min-height: 250px;
  }

  /* Ocultar elementos decorativos em tablets */
  .elementor-decoration {
    display: none;
  }

  .cards {
    right: 0;
    width: 100%;
    max-width: 100%;
  }
}

/* Smartphones grandes (480px - 768px) */
@media only screen and (max-width: 768px) {
  :root {
    --font-size-base: 0.9rem;
  }

  #introduction {
    min-height: 50vh;
    padding: var(--spacing-md);
    text-align: center;
  }

  #introduction h1 {
    font-size: clamp(var(--font-size-large), 6vw, var(--font-size-xl));
    text-align: center;
    margin-bottom: var(--spacing-lg);
  }

  #logo-sitec {
    max-width: 60%;
  }

  #card-area {
    padding: var(--spacing-lg) var(--spacing-md);
    min-height: 50vh;
  }

  .cards-container {
    max-width: 100%;
    width: 100%;
  }

  .cards {
    min-height: 200px;
    padding: var(--spacing-lg);
  }

  .card-title {
    font-size: var(--font-size-large);
  }

  .card-text {
    font-size: var(--font-size-small);
    max-width: 90%;
  }

  .card-btn {
    font-size: var(--font-size-small);
    padding: var(--spacing-xs) var(--spacing-sm);
  }

  .cards {
    right: 0;
    width: 100%;
    max-width: 100%;
  }
}

/* Smartphones pequenos (320px - 480px) */
@media only screen and (max-width: 480px) {
  :root {
    --font-size-base: 0.85rem;
  }

  body {
    font-size: var(--font-size-small);
  }

  #introduction {
    min-height: 45vh;
    padding: var(--spacing-sm);
  }

  #introduction h1 {
    font-size: xx-large;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
  }

  #logo-sitec {
    max-width: 90%;
  }

  #card-area {
    padding: var(--spacing-md) var(--spacing-sm);
    min-height: 55vh;
  }

  .cards {
    min-height: 180px;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-lg);
  }

  .card-title {
    font-size: xx-large;
    margin-bottom: var(--spacing-xs);
  }

  .card-text {
    font-size: large;
    margin-bottom: var(--spacing-md);
    max-width: 95%;
    line-height: 1.4;
  }

  .card-btn {
    font-size: x-large;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-sm);
  }

  .cards {
    right: 0;
    width: 100%;
    max-width: 100%;
  }
  .cards-container {
    max-width: 100%;
    width: 100%;
  }
  .card-content {
    text-align: center;
  }

  #btn-moodle {
    justify-content: center;
    align-items: center;
    text-decoration: none;
    margin-top: 10px;
  }
}

/* Smartphones muito pequenos (< 320px) */
@media only screen and (max-width: 320px) {
  #introduction h1 {
    font-size: var(--font-size-base);
    line-height: 1.4;
  }

  .cards {
    min-height: 160px;
    padding: var(--spacing-sm);
  }

  .card-title {
    font-size: var(--font-size-small);
  }

  .card-text {
    font-size: 0.75rem;
  }

  .card-btn {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
  }
}

/* Orientação paisagem em dispositivos móveis */
@media only screen and (max-height: 500px) and (orientation: landscape) {
  #content {
    flex-direction: row;
  }

  #introduction {
    min-height: 100vh;
    flex: 1;
  }

  #introduction h1 {
    font-size: clamp(var(--font-size-base), 3vw, var(--font-size-large));
    margin-bottom: var(--spacing-sm);
  }

  #logo-sitec {
    max-width: 50%;
  }

  #card-area {
    min-width: 300px;
    max-width: 300px;
    min-height: 100vh;
  }

  .cards {
    min-height: 150px;
  }
}

/* Melhorias de acessibilidade */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  body {
    animation: none;
  }
}

/* Modo escuro (se suportado pelo dispositivo) */
@media (prefers-color-scheme: dark) {
  .cards::before {
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.3));
  }
}

/* Impressão */
@media print {
  body {
    background: white;
    color: black;
  }

  .elementor-decoration,
  .loading-overlay {
    display: none;
  }

  #content {
    flex-direction: column;
  }

  .cards {
    background: #f0f0f0;
    color: black;
    border: 1px solid #ccc;
  }
}

/* Otimizações de performance */
.cards,
.card-btn,
#logo-sitec {
  will-change: transform;
  backface-visibility: hidden;
}

/* Estados de foco para acessibilidade */
.card-btn:focus {
  outline: 2px solid white;
  outline-offset: 2px;
}

/* Hover states apenas para dispositivos que suportam */
@media (hover: hover) {
  .cards:hover {
    transform: translateY(-8px);
  }

  .card-btn:hover {
    transform: translateY(-2px);
  }

  #logo-sitec:hover {
    transform: scale(1.05);
  }
}

/* Touch states para dispositivos móveis */
@media (hover: none) {
  .cards:active {
    transform: scale(0.98);
  }

  .card-btn:active {
    transform: scale(0.95);
  }
}