/* Flashcards Page Styles - consistent with theme */

/* Força textos e títulos pretos no modo claro */
:root:not([data-theme="dark"]) h1,
:root:not([data-theme="dark"]) h2,
:root:not([data-theme="dark"]) h3,
:root:not([data-theme="dark"]) h4,
:root:not([data-theme="dark"]) h5,
:root:not([data-theme="dark"]) h6,
:root:not([data-theme="dark"]) p,
:root:not([data-theme="dark"]) span,
:root:not([data-theme="dark"]) label,
:root:not([data-theme="dark"]) .card-front,
:root:not([data-theme="dark"]) .card-back,
:root:not([data-theme="dark"]) .preview-front,
:root:not([data-theme="dark"]) .preview-back {
    color: #000000 !important;
    -webkit-text-fill-color: #000000 !important;
}

.flashcards-container { display: grid; grid-template-columns: 320px 1fr; grid-template-rows: auto; gap: 1.5rem; max-width: 1200px; margin: 2rem auto; padding: 0 1rem; }

.deck-sidebar { background: var(--card-bg); border: 2px solid var(--border-color); border-radius: 24px; box-shadow: var(--shadow); padding: 1.25rem; }
.sidebar-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.search-box input { width: 100%; padding: .8rem 1rem; border-radius: 12px; border: 2px solid var(--border-color); background: transparent; color: var(--text-primary); }
.deck-list { display: flex; flex-direction: column; gap: .75rem; margin-top: 1rem; }
.deck-item { padding: .9rem 1rem; border-radius: 12px; border: 2px solid var(--border-color); background: rgba(255,255,255,0.04); cursor: pointer; transition: transform .15s, box-shadow .15s; }
.deck-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.deck-item.active { border-color: var(--primary); }
.empty-state { text-align: center; padding: 2rem; color: var(--text-secondary); }
.empty-icon { font-size: 2rem; margin-bottom: .5rem; }

.deck-editor { background: transparent; }
.deck-container { background: var(--card-bg); border: 2px solid var(--border-color); border-radius: 24px; box-shadow: var(--shadow); padding: 1.25rem; }
.deck-toolbar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.deck-title-input { flex: 1; padding: .8rem 1rem; border-radius: 12px; border: 2px solid var(--border-color); background: transparent; color: var(--text-primary); font-size: 1rem; }
.deck-actions { display: flex; gap: .5rem; }

.card-toolbar { display: flex; gap: .75rem; align-items: center; margin: 1rem 0; }
.format-select { padding: .6rem .8rem; border-radius: 10px; border: 2px solid var(--border-color); background: transparent; color: var(--text-primary); }

.cards-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1rem; }
.card-item { position: relative; padding: 1rem; border-radius: 16px; border: 2px solid var(--border-color); background: rgba(255,255,255,0.05); }
.card-front, .card-back { white-space: pre-wrap; color: var(--text-primary); }
.card-actions { display: flex; gap: .5rem; position: absolute; top: .5rem; right: .5rem; }

.study-panel { margin-top: 1rem; }
.study-controls { display: flex; flex-direction: column; gap: 1rem; align-items: center; margin-top: 1.5rem; }

/* Buttons - reuse theme */
.btn-primary { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; border: none; padding: .7rem 1rem; border-radius: 10px; cursor: pointer; font-weight: 600; }
.btn-secondary { background: transparent; border: 2px solid var(--border-color); color: var(--text-primary); padding: .7rem 1rem; border-radius: 10px; cursor: pointer; }
.btn-danger { background: linear-gradient(135deg, #ff7675 0%, #d63031 100%); color: #fff; border: none; padding: .7rem 1rem; border-radius: 10px; cursor: pointer; font-weight: 600; }

.no-selection { text-align: center; color: var(--text-secondary); padding: 2rem; }
.no-icon { font-size: 2rem; margin-bottom: .5rem; }

/* Stats Summary */
.stats-summary { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-bottom: 1rem; padding: 1rem; background: rgba(102, 126, 234, 0.1); border-radius: 12px; }
.stat-item { text-align: center; }
.stat-value { display: block; font-size: 1.5rem; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 0.75rem; color: var(--text-secondary); text-transform: uppercase; }

/* Deck Stats */
.deck-stats { display: flex; gap: .75rem; margin: 1rem 0; flex-wrap: wrap; }
.stat-badge { padding: .5rem 1rem; border-radius: 12px; background: rgba(102, 126, 234, 0.1); color: var(--primary); font-size: .85rem; font-weight: 600; }
.stat-new { background: rgba(74, 144, 226, 0.15); color: #4a90e2; }
.stat-review { background: rgba(255, 152, 0, 0.15); color: #ff9800; }
.stat-mastered { background: rgba(76, 175, 80, 0.15); color: #4caf50; }

/* Tag Filter */
.tag-filter { padding: .6rem .8rem; border-radius: 10px; border: 2px solid var(--border-color); background: transparent; color: var(--text-primary); min-width: 180px; }

/* Study Progress Bar */
.study-progress { display: flex; align-items: center; gap: 1rem; margin-bottom: 1.5rem; }
.progress-bar { flex: 1; height: 10px; background: rgba(255,255,255,0.1); border-radius: 10px; overflow: hidden; }
.progress-fill { height: 100%; background: linear-gradient(90deg, #667eea 0%, #764ba2 100%); transition: width 0.3s ease; }
.progress-text { font-weight: 700; color: var(--primary); white-space: nowrap; }

/* Study Card Flip Animation */
.study-card-flip { perspective: 1000px; min-height: 320px; margin: 1rem 0; }
.study-card-inner { position: relative; width: 100%; min-height: 320px; transition: transform 0.6s; transform-style: preserve-3d; }
.study-card-inner.flipped { transform: rotateY(180deg); }
.study-card-face { position: absolute; width: 100%; height: 100%; min-height: 320px; backface-visibility: hidden; background: var(--card-bg); border: 2px solid var(--border-color); border-radius: 20px; padding: 2rem; display: flex; align-items: center; justify-content: center; text-align: center; font-size: 1.3rem; color: var(--text-primary); box-shadow: var(--shadow); }
.study-back { transform: rotateY(180deg); }

/* Study Controls Enhanced */
.btn-reveal { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); color: #fff; border: none; padding: 1rem 2rem; border-radius: 16px; cursor: pointer; font-weight: 600; font-size: 1.1rem; transition: all 0.3s; }
.btn-reveal:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(102, 126, 234, 0.4); }
.btn-reveal kbd { background: rgba(255,255,255,0.2); padding: 2px 6px; border-radius: 4px; margin-left: 8px; font-size: .85rem; }

.grade-buttons { display: flex; gap: .75rem; justify-content: center; flex-wrap: wrap; }
.btn-grade { padding: 1rem 1.5rem; border-radius: 14px; border: 2px solid var(--border-color); background: var(--card-bg); color: var(--text-primary); cursor: pointer; font-weight: 600; font-size: 1rem; transition: all 0.2s; }
.btn-grade:hover { transform: translateY(-2px); }
.btn-grade kbd { background: rgba(255,255,255,0.1); padding: 2px 6px; border-radius: 4px; margin-left: 6px; font-size: .75rem; }
.btn-again { border-color: #ff7675; color: #ff7675; }
.btn-again:hover { background: rgba(255, 118, 117, 0.1); }
.btn-hard { border-color: #ff9800; color: #ff9800; }
.btn-hard:hover { background: rgba(255, 152, 0, 0.1); }
.btn-good { border-color: #4caf50; color: #4caf50; }
.btn-good:hover { background: rgba(76, 175, 80, 0.1); }
.btn-easy { border-color: #667eea; color: #667eea; }
.btn-easy:hover { background: rgba(102, 126, 234, 0.1); }

/* Modal Styles */
.modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.7); z-index: 9999; display: flex; align-items: center; justify-content: center; backdrop-filter: blur(5px); }
.modal-content { background: var(--card-bg); border: 2px solid var(--border-color); border-radius: 24px; max-width: 700px; width: 90%; max-height: 90vh; overflow-y: auto; box-shadow: 0 20px 60px rgba(0,0,0,0.3); }
.modal-header { padding: 1.5rem; border-bottom: 2px solid var(--border-color); display: flex; justify-content: space-between; align-items: center; }
.modal-header h3 { color: var(--text-primary); margin: 0; }
.modal-close { background: transparent; border: none; font-size: 2rem; color: var(--text-secondary); cursor: pointer; line-height: 1; }
.modal-close:hover { color: var(--text-primary); }
.modal-body { padding: 1.5rem; }
.modal-footer { padding: 1.5rem; border-top: 2px solid var(--border-color); display: flex; justify-content: flex-end; gap: .75rem; }

/* Form Groups */
.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: .5rem; color: var(--text-primary); font-weight: 600; }
.form-group input, .form-group textarea { width: 100%; padding: .8rem 1rem; border-radius: 12px; border: 2px solid var(--border-color); background: rgba(255,255,255,0.05); color: var(--text-primary); font-family: inherit; }
.form-group input:focus, .form-group textarea:focus { outline: none; border-color: var(--primary); }
.format-buttons { display: flex; gap: .5rem; margin-top: .5rem; }
.format-buttons button { padding: .4rem .8rem; border-radius: 8px; border: 2px solid var(--border-color); background: transparent; color: var(--text-primary); cursor: pointer; font-weight: 600; }

/* Card Preview in Modal */
.card-preview { margin-top: 1.5rem; padding: 1rem; background: rgba(102, 126, 234, 0.05); border-radius: 12px; }
.preview-label { font-size: .85rem; color: var(--text-secondary); margin-bottom: .5rem; font-weight: 600; }
.preview-card { background: var(--card-bg); border: 2px solid var(--border-color); border-radius: 16px; padding: 1.5rem; }
.preview-front, .preview-back { color: var(--text-primary); min-height: 60px; }
.preview-card hr { border: none; border-top: 1px solid var(--border-color); margin: 1rem 0; }

/* Card Item Enhanced */
.card-item { position: relative; padding: 1rem; border-radius: 16px; border: 2px solid var(--border-color); background: rgba(255,255,255,0.05); transition: transform 0.2s, box-shadow 0.2s; }
.card-item:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.card-badge { position: absolute; top: .5rem; left: .5rem; padding: .3rem .6rem; border-radius: 8px; font-size: .75rem; font-weight: 600; }
.badge-new { background: rgba(74, 144, 226, 0.2); color: #4a90e2; }
.badge-review { background: rgba(255, 152, 0, 0.2); color: #ff9800; }
.badge-mastered { background: rgba(76, 175, 80, 0.2); color: #4caf50; }
.card-tags { display: flex; gap: .4rem; flex-wrap: wrap; margin-top: .5rem; }
.card-tag { padding: .2rem .5rem; border-radius: 6px; background: rgba(102, 126, 234, 0.15); color: var(--primary); font-size: .7rem; }

@media (max-width: 900px) {
  .flashcards-container { 
    display: flex !important;
    flex-direction: column !important;
    grid-template-columns: none !important;
    gap: 1rem;
  }
  
  .deck-sidebar {
    position: relative !important;
    width: 100%;
    margin-bottom: 1rem;
    max-height: none;
  }
  
  .deck-container {
    position: relative !important;
    width: 100%;
  }
  
  .modal-content { width: 95%; }
  .grade-buttons { flex-direction: column; }
  .btn-grade { width: 100%; }
}

@media (max-width: 480px) {
  .flashcards-container {
    padding: 0 0.5rem;
    margin: 1rem auto;
  }
  
  .deck-sidebar {
    padding: 1rem;
    border-radius: 16px;
  }
  
  .sidebar-header h2 {
    font-size: 1.2rem;
  }
  
  .deck-container {
    border-radius: 16px;
  }
  
  .card-toolbar {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
  
  .study-card-face {
    font-size: 1.1rem;
    padding: 1.5rem;
  }
}