/* ==========================================================================
   StudyMate AI - Text Input Page Styles (css/text-input.css)
   Mobile-First, Zero-Overflow, Comfortable Input Interface
   ========================================================================== */

.input-container {
  max-width: 740px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
}

.input-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  width: 100%;
  box-sizing: border-box;
}

/* Numbered Step Headers for Form Sections */
.form-step-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: var(--space-2);
}

.step-num-circle {
  width: 26px;
  height: 26px;
  border-radius: var(--radius-full);
  background-color: var(--primary);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 800;
  flex-shrink: 0;
}

.subject-suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-3);
  max-width: 100%;
  box-sizing: border-box;
}

.suggestion-chip {
  padding: 8px 14px;
  font-size: var(--text-xs);
  background-color: var(--bg-muted);
  border: 1.5px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  user-select: none;
  touch-action: manipulation;
}

.suggestion-chip:hover {
  background-color: var(--primary-light);
  color: var(--primary);
  border-color: var(--primary);
  transform: translateY(-1px);
}

.suggestion-chip.active {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 6px rgba(79, 70, 229, 0.3);
}

.sample-loader-box {
  background-color: #f0fdf4;
  border: 1px dashed #86efac;
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
  max-width: 100%;
  box-sizing: border-box;
}

.sample-loader-btn {
  font-size: var(--text-xs);
  color: #065f46;
  font-weight: 700;
  padding: 8px 14px;
  border-radius: var(--radius-md);
  background-color: #bbf7d0;
  border: 1px solid #86efac;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.sample-loader-btn:hover {
  background-color: #86efac;
  color: #044e39;
}

.textarea-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  max-width: 100%;
  box-sizing: border-box;
}

.char-counter {
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.char-counter.warning {
  color: var(--warning);
}

.char-counter.limit {
  color: var(--danger);
  font-weight: 700;
}

.form-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding-top: var(--space-5);
  border-top: 1px solid var(--border-color);
  width: 100%;
  box-sizing: border-box;
}

/* ==========================================================================
   Mobile-Optimized Compact & Zero-Overflow Layout (< 640px)
   ========================================================================== */

@media (max-width: 640px) {
  .step-wizard {
    display: none !important;
  }

  .input-container {
    padding: 0;
    width: 100%;
    max-width: 100%;
  }

  .input-card {
    padding: 14px 14px;
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 100%;
  }

  .form-group {
    margin-top: 12px !important;
    width: 100%;
    max-width: 100%;
  }

  .form-step-badge {
    font-size: 0.84rem;
    margin-bottom: 4px;
  }

  .step-num-circle {
    width: 22px;
    height: 22px;
    font-size: 0.72rem;
  }

  .subject-suggestions {
    margin-top: 6px;
    flex-wrap: nowrap;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    max-width: 100%;
    width: 100%;
  }

  .subject-suggestions::-webkit-scrollbar {
    display: none;
  }

  .suggestion-chip {
    padding: 6px 12px;
    font-size: 0.72rem;
    white-space: nowrap;
    flex-shrink: 0;
  }

  .form-input {
    padding: 9px 12px;
    font-size: 0.88rem;
    height: 40px;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .sample-loader-box {
    padding: 8px 10px;
    margin-bottom: 6px;
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    text-align: center;
  }

  .sample-loader-box span {
    display: none;
  }

  .sample-loader-btn {
    padding: 8px 12px;
    font-size: 0.75rem;
    width: 100%;
    text-align: center;
  }

  .form-textarea {
    min-height: 90px;
    max-height: 140px;
    padding: 10px 12px;
    font-size: 0.88rem;
    line-height: 1.4;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
  }

  .textarea-footer {
    margin-top: 4px;
    font-size: 0.65rem;
  }

  /* Stack actions vertically to completely eliminate horizontal overflow */
  .form-actions {
    margin-top: 14px;
    padding-top: 12px;
    gap: 8px;
    display: flex;
    flex-direction: column !important;
    width: 100%;
    max-width: 100%;
  }

  #btn-generate {
    width: 100% !important;
    padding: 13px 16px;
    font-size: 0.95rem;
    font-weight: 700;
    border-radius: var(--radius-lg);
    box-shadow: 0 4px 16px rgba(79, 70, 229, 0.35);
    white-space: normal;
    text-align: center;
    justify-content: center;
    line-height: 1.3;
  }

  #btn-clear {
    width: 100% !important;
    padding: 7px 12px;
    font-size: 0.78rem;
    color: var(--text-muted);
    background: transparent;
    border: none;
    text-align: center;
    justify-content: center;
  }
}