/* ═══════════════════════════════════════════════════════════════
   calculation-tools.css — Calculation Tools UI Styles
   Redesigned to match Mostahsela card-based layout
   کیمیاگری با حروف — نسخه ۴.۰
   ═══════════════════════════════════════════════════════════════ */

.calc-tools-container {
  direction: rtl;
}

/* ─── Tool Selector Grid ─── */
.calc-tools-selector-card {
  margin-bottom: 20px;
}

.calc-tools-selector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 8px;
}

.calc-tool-selector-btn {
  background: linear-gradient(135deg, var(--card-a), var(--card-b));
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 14px 10px;
  text-align: center;
  cursor: not-allowed;
  transition: all 0.15s;
  position: relative;
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: inherit;
}

.calc-tool-selector-btn:hover {
  border-color: var(--gold-dim);
  color: var(--ink);
}

.calc-tool-selector-btn.active {
  cursor: pointer;
  border-color: var(--gold-dim);
  background: linear-gradient(135deg, var(--card-a), var(--card-b));
}

.calc-tool-selector-btn.active:hover {
  border-color: var(--gold);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201,168,76,.2);
}

.tool-selector-ico {
  font-size: 28px;
  color: var(--gold-dim);
  margin-bottom: 6px;
}

.calc-tool-selector-btn.active .tool-selector-ico {
  color: var(--gold);
}

.tool-selector-name {
  font-size: 12px;
  color: var(--ink-dim);
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 4px;
}

.calc-tool-selector-btn.active .tool-selector-name {
  color: var(--ink);
}

.tool-selector-desc {
  font-size: 10px;
  color: var(--ink-dim);
  opacity: 0.7;
  line-height: 1.2;
}

.calc-tool-selector-btn.active .tool-selector-desc {
  color: var(--ink);
  opacity: 0.9;
}

/* ─── Tool Input Card ─── */
.calc-tool-input-card {
  margin-bottom: 20px;
  min-height: 200px;
}

.calc-tool-form-section {
  display: none;
}

.calc-tool-form-section label {
  display: block;
  font-size: 12px;
  color: var(--ink-dim);
  margin: 12px 0 6px 0;
  font-weight: 500;
}

.calc-tool-textarea {
  width: 100%;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--ink);
  font-family: 'Scheherazade', serif;
  font-size: 16px;
  padding: 10px;
  outline: none;
  border-radius: 2px;
  direction: rtl;
  transition: 0.15s;
  min-height: 80px;
  resize: vertical;
  line-height: 1.8;
}

.calc-tool-textarea:focus {
  border-color: var(--gold-dim);
}

.calc-tool-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 12px;
  direction: rtl;
  margin: 12px 0;
}

.calc-tool-table td,
.calc-tool-table th {
  border: 1px solid var(--border);
  padding: 6px 8px;
  text-align: center;
  color: var(--ink-dim);
}

.calc-tool-table th {
  color: var(--gold);
  background: rgba(201,168,76,.05);
  font-weight: 600;
}

.calc-tool-table .col-letter {
  font-family: 'Scheherazade', serif;
  font-size: 14px;
  text-align: center;
}

.calc-tool-table tr:hover {
  background: rgba(201,168,76,.05);
}

/* ─── Result Display ─── */
.row-line {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px;
  border-left: 2px solid var(--border);
  margin-bottom: 6px;
  direction: rtl;
  font-family: 'Scheherazade', serif;
  font-size: 16px;
  line-height: 1.8;
}

.row-line.highlight {
  border-left-color: var(--gold);
  background: rgba(201,168,76,.08);
}

.row-idx {
  font-size: 11px;
  color: var(--gold-dim);
  flex-shrink: 0;
  min-width: 50px;
}

.row-letters {
  color: var(--ink);
  flex: 1;
}

.step-entry {
  margin-bottom: 12px;
  padding: 10px;
  border: 1px solid var(--border);
  border-radius: 2px;
  background: rgba(0,0,0,.08);
}

/* ─── Validation Error ─── */
.validation-error {
  background: rgba(190,70,70,.2);
  border: 1px solid rgba(190,70,70,.3);
  color: #d89b9b;
  padding: 8px;
  border-radius: 2px;
  font-size: 12px;
  display: none;
  margin: 8px 0;
}

/* ─── Responsive Design ─── */
@media (max-width: 960px) {
  .calc-tools-selector-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
}

@media (max-width: 600px) {
  .calc-tools-selector-grid {
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 6px;
  }

  .calc-tool-selector-btn {
    padding: 12px 8px;
    min-height: 90px;
  }

  .tool-selector-ico {
    font-size: 24px;
  }

  .tool-selector-name {
    font-size: 11px;
  }

  .tool-selector-desc {
    font-size: 9px;
  }

  .calc-tool-textarea {
    font-size: 14px;
    min-height: 70px;
  }

  .calc-tool-table {
    font-size: 11px;
  }

  .calc-tool-table td,
  .calc-tool-table th {
    padding: 4px 6px;
  }

  .row-line {
    gap: 8px;
    padding: 6px;
    font-size: 14px;
  }

  .row-idx {
    font-size: 10px;
    min-width: 45px;
  }
}

@media (max-width: 380px) {
  .calc-tools-selector-grid {
    grid-template-columns: 1fr;
  }

  .calc-tool-selector-btn {
    width: 100%;
  }
}