/* ==========================================================================
   Base & Global Styles
   ========================================================================== */
html {
  height: 100%;
  width: 100%;
}

body {
  margin: 0;
  padding: 20px;
  background-color: #4158D0;
  background-image: url('https://firebasestorage.googleapis.com/v0/b/mauriciodallonder-64688.appspot.com/o/bandeira.jpg?alt=media&token=93383751-b852-4b4a-89e9-82037c09f9da');
  background-size: cover;
  background-attachment: fixed;
  max-width: 100%;
  font-family: sans-serif;
}

/* ==========================================================================
   Container & Layout
   ========================================================================== */
.container {
  background: rgba(255, 255, 255, 0.9);
  border-radius: 20px;
  padding: 20px;
  margin-top: 20px;
  width: 100%;
}

.flex-md-row {
  display: flex;
  justify-content: space-between;
}

.main-content,
.feedback-box {
  margin-bottom: 20px;
}

.feedback-box {
  flex: 0 0 30%;
  margin-left: 20px;
  border: 2px solid #3b5998;
  border-radius: 10px;
  padding: 20px;
}

.main-content {
  flex: 0 0 65%;
}

/* ==========================================================================
   Form Controls & Text Inputs
   ========================================================================== */
select {
  width: 100%;
  max-width: 600px;
  padding: 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
  font-size: 16px;
}

optgroup {
  font-weight: bold;
  color: #2c3e50;
}

option {
  padding: 4px;
}

.textarea {
  width: fit-content;
  height: fit-content;
  resize: none;
  overflow: hidden;
  font-size: 16px;
  padding: 10px;
  box-sizing: border-box;
  min-height: 60px;
  line-height: 1.5;
}

.form-label {
  font-size: 16px;
  margin-bottom: 5px;
}

/* ==========================================================================
   Buttons & Status Messages
   ========================================================================== */
.classButton {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.btn-speak {
  display: block;
  margin-top: 10px;
  width: 100%;
}

.recording {
  color: red;
}

.uploading-message {
  display: none;
  color: red;
}

#statusMessage {
  display: none;
  font-weight: bold;
  color: red;
  text-align: center;
  font-size: 12px;
}

/* ==========================================================================
   Highlights & Pronunciation Helpers
   ========================================================================== */
.pronunciation-hint {
  margin-bottom: 12px;
  line-height: 1.6;
  font-size: 16px;
}

.highlight {
  font-weight: bold;
  padding: 2px 4px;
  border-radius: 3px;
  margin: 0 2px;
  display: inline-block;
  box-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.vowel-highlight       { background-color: rgba(255,0,0,0.1); }
.consonant-highlight   { background-color: rgba(0,0,255,0.1); }
.nasal-highlight       { background-color: rgba(153,0,204,0.1); }
.diphthong-highlight   { background-color: rgba(0,204,0,0.1); }
.silent-highlight      { background-color: rgba(153,153,153,0.1); }
.special-highlight     { background-color: rgba(255,153,0,0.1); }

.explica {
  font-size: 14px !important;
  font-weight: bold !important;
}

/* ==========================================================================
   Pronunciation Section
   ========================================================================== */
.pronunciation-feedback {
  border: 2px solid #0d6efd;
  background-color: #e3f2fd;
  padding: 20px;
  margin-bottom: 30px;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.1);
}

.pronunciation-feedback > h3.form-label {
  font-size: 1.4rem;
  color: #0d6efd;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  border-bottom: 1px solid #0d6efd;
  padding-bottom: 6px;
}

#pronunciation {
  font-size: 1.6rem;
  font-weight: bold;
  color: #333;
  line-height: 1.4;
  margin-top: 8px;
}

/* ==========================================================================
   Divider
   ========================================================================== */
.section-divider {
  border: 0;
  height: 1px;
  background: #ddd;
  margin: 40px 0 20px;
}

/* ==========================================================================
   Hints Section
   ========================================================================== */
#hintsContainer {
  border: 2px solid #198754;
  background-color: #e6f4ea;
  padding: 20px;
  border-radius: 8px;
}

#hintsContainer > h4 {
  font-size: 1.3rem;
  color: #198754;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 12px;
  border-bottom: 1px solid #198754;
  padding-bottom: 6px;
}

.pronunciation-list {
  list-style: none;
  padding-left: 0;
}

.pronunciation-list li {
  background: #fff;
  padding: 10px;
  margin-bottom: 8px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

#hintsList li strong {
  font-size: 1.1em;
  color: #0d6efd;
}

/* ==========================================================================
   Responsive: Small Screens
   ========================================================================== */
@media (max-width: 767px) {
  .flex-md-row {
    display: block;
    width: 100%;
  }

  .main-content,
  .feedback-box {
    width: 100%;
    margin: 0;
    padding: 10px 0;
  }

  .classButton {
    flex-direction: column;
  }

  .form-control {
    width: 100%;
    font-size: 16px;
    height: 100px;
  }

  #pronunciation {
    font-size: 18px;
    line-height: 1.4;
    margin-top: 8px;
    margin-bottom: 10px;
    padding: 8px;
    border-radius: 4px;
    background-color: #f8f9fa;
    color: #4158D0;
  }
}

/* ==========================================================================
   Responsive: Medium & Up
   ========================================================================== */
@media (min-width: 768px) {
  /* já definido em container/layout */
}