/* ========================================
   STUDIES PAGE
   ======================================== */

.studies-page {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg, 1.5rem);
}

/* Header */
.studies-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-md, 1rem);
}

.studies-header__title {
  margin: 0;
  font-size: var(--font-size-xl, 1.25rem);
  color: var(--color-gold, #d4af37);
  font-weight: var(--font-weight-medium, 500);
}

.studies-header__actions {
  display: flex;
  gap: var(--space-xs, 0.25rem);
}

/* Botões */
.studies-btn {
  background: transparent;
  border: 1px solid var(--color-gold, #d4af37);
  color: var(--color-gold, #d4af37);
  border-radius: var(--radius-sm, 8px);
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm, 0.875rem);
  font-family: inherit;
  cursor: pointer;
  transition: background var(--transition-fast, 0.15s ease), color var(--transition-fast, 0.15s ease);
}

.studies-btn:hover,
.studies-btn:focus-visible {
  background: var(--color-gold, #d4af37);
  color: var(--color-bg-primary, #0a0a0a);
  outline: none;
}

.studies-btn--primary {
  background: var(--color-gold, #d4af37);
  color: var(--color-bg-primary, #0a0a0a);
}

.studies-btn--primary:hover,
.studies-btn--primary:focus-visible {
  background: var(--color-gold-hover, #e6c34a);
}

.studies-btn--small {
  padding: 0.25rem 0.6rem;
  font-size: var(--font-size-xs, 0.75rem);
}

/* Formulário */
.studies-form {
  background: var(--color-bg-secondary, #1a1715);
  border: 1px solid var(--color-border, #4a3f38);
  border-radius: var(--radius-md, 12px);
  padding: var(--space-md, 1rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-md, 1rem);
}

.studies-form__title {
  margin: 0;
  font-size: var(--font-size-md, 1rem);
  color: var(--color-gold, #d4af37);
}

.studies-form__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-sm, 0.5rem);
}

.studies-form__field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.studies-form__field label {
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--color-text-secondary, #b8956a);
}

.studies-form__field input,
.studies-form__field select,
.studies-form__field textarea {
  background: var(--color-bg-input, #2a2521);
  border: 1px solid var(--color-border, #4a3f38);
  border-radius: var(--radius-sm, 8px);
  padding: 0.5rem;
  color: var(--color-text-primary, #f5f0eb);
  font-family: inherit;
  font-size: var(--font-size-sm, 0.875rem);
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
}

.studies-form__field textarea {
  resize: vertical;
  min-height: 60px;
}

.studies-form__error {
  color: var(--color-error, #e74c3c);
  font-size: var(--font-size-xs, 0.75rem);
}

.studies-form__actions {
  display: flex;
  gap: var(--space-sm, 0.5rem);
  justify-content: flex-end;
}

/* Lista */
.studies-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 0.5rem);
}

/* Item individual */
.study-item {
  background: var(--color-bg-secondary, #1a1715);
  border: 1px solid var(--color-border, #4a3f38);
  border-radius: var(--radius-md, 12px);
  padding: var(--space-md, 1rem);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs, 0.25rem);
  transition: border-color var(--transition-fast, 0.15s ease);
}

.study-item:hover {
  border-color: var(--color-border-light, #b8956a);
}

.study-item--completed {
  border-color: var(--color-gold, #d4af37);
  opacity: 0.85;
}

.study-item--paused {
  opacity: 0.6;
}

.study-item__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-sm, 0.5rem);
}

.study-item__name {
  margin: 0;
  font-size: var(--font-size-md, 1rem);
  color: var(--color-text-primary, #f5f0eb);
  font-weight: var(--font-weight-medium, 500);
}

.study-item__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs, 0.25rem);
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--color-text-secondary, #b8956a);
}

.study-item__tag {
  background: rgba(212, 175, 55, 0.1);
  border-radius: var(--radius-full, 40px);
  padding: 0.1rem 0.5rem;
}

.study-item__description {
  margin: 0;
  font-size: var(--font-size-sm, 0.875rem);
  color: var(--color-text-secondary, #b8956a);
}

.study-item__progress {
  margin-top: var(--space-xs, 0.25rem);
}

.study-item__actions {
  display: flex;
  gap: var(--space-xs, 0.25rem);
}

.study-item__actions button {
  background: transparent;
  border: 1px solid var(--color-border, #4a3f38);
  color: var(--color-text-secondary, #b8956a);
  border-radius: var(--radius-sm, 8px);
  min-width: 40px;
  min-height: 40px;
  padding: 0.4rem 0.6rem;
  font-size: 1.1rem;
  line-height: 1;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color var(--transition-fast, 0.15s ease), border-color var(--transition-fast, 0.15s ease);
}

.study-item__actions button:hover,
.study-item__actions button:focus-visible {
  color: var(--color-gold, #d4af37);
  border-color: var(--color-gold, #d4af37);
  outline: none;
}

/* ---------- Sessions (sub-lista dentro do study) ---------- */
.study-sessions {
  margin-top: var(--space-sm, 0.5rem);
  padding-top: var(--space-sm, 0.5rem);
  border-top: 1px solid var(--color-border, #4a3f38);
  display: flex;
  flex-direction: column;
  gap: var(--space-xs, 0.25rem);
}

.study-sessions__title {
  margin: 0 0 var(--space-xs, 0.25rem) 0;
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--color-text-secondary, #b8956a);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.study-session {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-xs, 0.25rem);
  padding: 0.25rem 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: var(--radius-sm, 8px);
  font-size: var(--font-size-xs, 0.75rem);
  color: var(--color-text-primary, #f5f0eb);
}

.study-session__info {
  flex: 1;
  min-width: 0;
}

.study-session__date {
  color: var(--color-text-secondary, #b8956a);
}

.study-session__duration {
  color: var(--color-gold, #d4af37);
  font-weight: var(--font-weight-medium, 500);
}

.study-session__notes {
  font-style: italic;
  color: var(--color-text-secondary, #b8956a);
  margin-top: 2px;
}

.study-session__delete {
  background: transparent;
  border: 1px solid var(--color-border, #4a3f38);
  color: var(--color-text-secondary, #b8956a);
  border-radius: var(--radius-sm, 8px);
  min-width: 28px;
  min-height: 28px;
  padding: 0;
  font-size: 0.9rem;
  font-family: inherit;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.study-session__delete:hover,
.study-session__delete:focus-visible {
  color: var(--color-error, #e74c3c);
  border-color: var(--color-error, #e74c3c);
  outline: none;
}

/* Formulário inline para adicionar sessão */
.study-session-form {
  display: grid;
  grid-template-columns: 1fr 1fr auto;
  gap: var(--space-xs, 0.25rem);
  align-items: end;
  margin-top: var(--space-xs, 0.25rem);
}

.study-session-form input,
.study-session-form select {
  background: var(--color-bg-input, #2a2521);
  border: 1px solid var(--color-border, #4a3f38);
  border-radius: var(--radius-sm, 8px);
  padding: 0.35rem 0.5rem;
  color: var(--color-text-primary, #f5f0eb);
  font-family: inherit;
  font-size: var(--font-size-xs, 0.75rem);
  width: 100%;
}

.study-session-form button {
  background: var(--color-gold, #d4af37);
  color: var(--color-bg-primary, #0a0a0a);
  border: none;
  border-radius: var(--radius-sm, 8px);
  padding: 0.4rem 0.8rem;
  font-size: var(--font-size-xs, 0.75rem);
  font-family: inherit;
  font-weight: var(--font-weight-medium, 500);
  cursor: pointer;
  white-space: nowrap;
}

.study-session-form button:hover,
.study-session-form button:focus-visible {
  background: var(--color-gold-hover, #e6c34a);
  outline: none;
}

/* Estados */
.studies-state {
  text-align: center;
  padding: var(--space-xl, 2rem);
  color: var(--color-text-secondary, #b8956a);
  font-style: italic;
}

.studies-state--error {
  color: var(--color-error, #e74c3c);
}

/* Responsivo */
@media (min-width: 768px) {
  .studies-form__grid {
    grid-template-columns: 1fr 1fr;
  }
  .studies-form__field--full {
    grid-column: 1 / -1;
  }
}