/* Modern Forms CSS - Enhanced UI for Lamerdi UASALCO */
/* A comprehensive modern form design system with Persian/RTL support */

/* ========================================
   Form Design Tokens
======================================== */

:root {
  /* Form Colors */
  --form-bg: #ffffff;
  --form-border: #e2e8f0;
  --form-border-focus: #3b82f6;
  --form-border-error: #ef4444;
  --form-border-success: #10b981;
  
  /* Input Colors */
  --input-bg: #ffffff;
  --input-text: #1f2937;
  --input-placeholder: #9ca3af;
  --input-disabled-bg: #f3f4f6;
  --input-disabled-text: #6b7280;
  
  /* Label Colors */
  --label-color: #374151;
  --label-required: #ef4444;
  
  /* Button Colors */
  --btn-primary-bg: linear-gradient(135deg, #3b82f6, #1d4ed8);
  --btn-primary-hover: linear-gradient(135deg, #1d4ed8, #1e40af);
  --btn-success-bg: linear-gradient(135deg, #10b981, #059669);
  --btn-success-hover: linear-gradient(135deg, #059669, #047857);
  --btn-danger-bg: linear-gradient(135deg, #ef4444, #dc2626);
  --btn-danger-hover: linear-gradient(135deg, #dc2626, #b91c1c);
  
  /* Shadows */
  --form-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --form-shadow-hover: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --input-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --input-shadow-focus: 0 0 0 3px rgba(59, 130, 246, 0.1);
  
  /* Animations */
  --form-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --btn-transition: all 0.15s ease-in-out;
}

/* ========================================
   Base Form Styles
======================================== */

.modern-form {
  background: var(--form-bg);
  border-radius: 16px;
  padding: 2rem;
  box-shadow: var(--form-shadow);
  border: 1px solid var(--form-border);
  transition: var(--form-transition);
  margin-bottom: 2rem;
}

.modern-form:hover {
  box-shadow: var(--form-shadow-hover);
  transform: translateY(-1px);
}

/* ========================================
   Form Sections
======================================== */

.form-section {
  background: var(--form-bg);
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--form-border);
  box-shadow: var(--input-shadow);
  transition: var(--form-transition);
}

.form-section:hover {
  box-shadow: var(--form-shadow);
}

.form-section-title {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--label-color);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid #f1f5f9;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-section-title i {
  color: #3b82f6;
  font-size: 1.1rem;
}

/* ========================================
   Form Groups and Labels
======================================== */

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--label-color);
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

.form-label.required::after {
  content: " *";
  color: var(--label-required);
  font-weight: 600;
}

.form-help {
  font-size: 0.75rem;
  color: #6b7280;
  margin-top: 0.25rem;
  line-height: 1.4;
}

/* ========================================
   Modern Form Controls
======================================== */

.form-control {
  display: block;
  width: 100%;
  padding: 0.75rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--input-text);
  background-color: var(--input-bg);
  border: 2px solid var(--form-border);
  border-radius: 8px;
  box-shadow: var(--input-shadow);
  transition: var(--form-transition);
  min-height: 48px; /* Touch-friendly */
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: var(--input-shadow-focus);
  background-color: #fefefe;
}

.form-control::placeholder {
  color: var(--input-placeholder);
  opacity: 1;
}

.form-control:disabled {
  background-color: var(--input-disabled-bg);
  color: var(--input-disabled-text);
  cursor: not-allowed;
  opacity: 0.7;
}

/* Form Control Sizes */
.form-control-sm {
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  min-height: 40px;
}

.form-control-lg {
  padding: 1rem 1.25rem;
  font-size: 1.125rem;
  min-height: 56px;
}

/* ========================================
   Select Dropdowns
======================================== */

.form-select {
  display: block;
  width: 100%;
  padding: 0.75rem 2.5rem 0.75rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  color: var(--input-text);
  background-color: var(--input-bg);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='m1 6 7 7 7-7'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: left 0.75rem center;
  background-size: 16px 12px;
  border: 2px solid var(--form-border);
  border-radius: 8px;
  box-shadow: var(--input-shadow);
  transition: var(--form-transition);
  appearance: none;
  min-height: 48px;
}

.form-select:focus {
  outline: none;
  border-color: var(--form-border-focus);
  box-shadow: var(--input-shadow-focus);
}

/* ========================================
   Form Validation States
======================================== */

.form-control.is-valid {
  border-color: var(--form-border-success);
  padding-left: 2.5rem;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='m2.3 6.73.4.37 3.5-3.5-.37-.4-3.13 3.13L.74 4.04l-.37.4 1.93 2.29z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right calc(0.375em + 0.1875rem) center;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-valid:focus {
  border-color: var(--form-border-success);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-control.is-invalid {
  border-color: var(--form-border-error);
  padding-left: 2.5rem;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='none' stroke='%23dc3545' viewBox='0 0 12 12'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.8 4.6 1.4 1.4 1.4-1.4M8.6 7.4 7.2 6 5.8 7.4'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right calc(0.375em + 0.1875rem) center;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.form-control.is-invalid:focus {
  border-color: var(--form-border-error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.valid-feedback {
  display: none;
  width: 100%;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: #059669;
}

.invalid-feedback {
  display: none;
  width: 100%;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  color: #dc2626;
}

.form-control.is-valid ~ .valid-feedback,
.form-control.is-invalid ~ .invalid-feedback {
  display: block;
}

/* ========================================
   Modern Buttons
======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1;
  color: #ffffff;
  text-align: center;
  text-decoration: none;
  vertical-align: middle;
  cursor: pointer;
  user-select: none;
  border: 1px solid transparent;
  border-radius: 8px;
  transition: var(--btn-transition);
  min-height: 44px;
  gap: 0.5rem;
  position: relative;
  overflow: hidden;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

.btn:disabled {
  pointer-events: none;
  opacity: 0.6;
  cursor: not-allowed;
}

.btn i {
  font-size: 1rem;
}

/* Button Variants */
.btn-primary {
  background: var(--btn-primary-bg);
  border-color: transparent;
  box-shadow: 0 2px 4px rgba(59, 130, 246, 0.2);
}

.btn-primary:hover:not(:disabled) {
  background: var(--btn-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.btn-success {
  background: var(--btn-success-bg);
  border-color: transparent;
  box-shadow: 0 2px 4px rgba(16, 185, 129, 0.2);
}

.btn-success:hover:not(:disabled) {
  background: var(--btn-success-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.btn-danger {
  background: var(--btn-danger-bg);
  border-color: transparent;
  box-shadow: 0 2px 4px rgba(239, 68, 68, 0.2);
}

.btn-danger:hover:not(:disabled) {
  background: var(--btn-danger-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

.btn-outline-primary {
  color: #3b82f6;
  background-color: transparent;
  border-color: #3b82f6;
}

.btn-outline-primary:hover:not(:disabled) {
  color: #ffffff;
  background-color: #3b82f6;
  border-color: #3b82f6;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

/* Button Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  min-height: 36px;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1rem;
  min-height: 52px;
}

.btn-xl {
  padding: 1.25rem 2.5rem;
  font-size: 1.125rem;
  min-height: 60px;
}

/* ========================================
   Form Layout Helpers
======================================== */

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-col {
  flex: 1;
  min-width: 0;
}

.form-col-2 {
  flex: 0 0 calc(50% - 0.5rem);
}

.form-col-3 {
  flex: 0 0 calc(33.333333% - 0.67rem);
}

.form-col-4 {
  flex: 0 0 calc(25% - 0.75rem);
}

/* ========================================
   Special Form Components
======================================== */

.date-picker-group {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.date-picker-group .form-control {
  text-align: center;
}

.date-separator {
  font-weight: 600;
  color: #6b7280;
  font-size: 1.25rem;
  line-height: 1;
}

.file-upload-area {
  border: 2px dashed var(--form-border);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  transition: var(--form-transition);
  cursor: pointer;
  background: #fafbfc;
}

.file-upload-area:hover {
  border-color: var(--form-border-focus);
  background: #f8fafc;
}

.file-upload-area.drag-over {
  border-color: var(--form-border-focus);
  background: #f0f9ff;
}

.file-upload-icon {
  font-size: 2.5rem;
  color: #6b7280;
  margin-bottom: 1rem;
}

.file-upload-text {
  color: #374151;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.file-upload-hint {
  color: #6b7280;
  font-size: 0.875rem;
}

/* ========================================
   Form Progress Indicator
======================================== */

.form-progress {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  gap: 1rem;
}

.progress-step {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.progress-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  font-weight: 600;
  border: 2px solid #e5e7eb;
  color: #9ca3af;
  background: #ffffff;
  transition: var(--form-transition);
}

.progress-step.active .progress-circle {
  background: #3b82f6;
  color: #ffffff;
  border-color: #3b82f6;
}

.progress-step.completed .progress-circle {
  background: #10b981;
  color: #ffffff;
  border-color: #10b981;
}

.progress-line {
  width: 60px;
  height: 2px;
  background: #e5e7eb;
  transition: var(--form-transition);
}

.progress-line.completed {
  background: #10b981;
}

/* ========================================
   Loading States
======================================== */

.btn-loading {
  position: relative;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  margin: auto;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* ========================================
   Error States and Messages
======================================== */

.form-errors {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 1rem;
  margin-bottom: 1.5rem;
  color: #991b1b;
  font-size: 0.875rem;
  line-height: 1.5;
}

.form-errors h4 {
  color: #991b1b;
  font-size: 1rem;
  font-weight: 600;
  margin: 0 0 0.5rem 0;
}

.form-errors ul {
  margin: 0;
  padding-right: 1.25rem;
}

.form-errors li {
  margin-bottom: 0.25rem;
}

/* ========================================
   Responsive Design
======================================== */

@media (max-width: 768px) {
  .modern-form {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
  }
  
  .form-section {
    padding: 1rem;
    margin-bottom: 1rem;
  }
  
  .form-row {
    flex-direction: column;
    gap: 0;
  }
  
  .form-col,
  .form-col-2,
  .form-col-3,
  .form-col-4 {
    flex: 1;
    width: 100%;
  }
  
  .btn {
    width: 100%;
    margin-bottom: 0.5rem;
  }
  
  .date-picker-group {
    flex-direction: column;
    gap: 0.5rem;
  }
  
  .progress-step {
    flex-direction: column;
    text-align: center;
  }
  
  .progress-line {
    width: 2px;
    height: 30px;
  }
}

@media (max-width: 576px) {
  .modern-form {
    padding: 1rem;
    border-radius: 12px;
  }
  
  .form-section {
    padding: 0.75rem;
  }
  
  .form-control,
  .form-select {
    font-size: 16px; /* Prevent zoom on iOS */
  }
  
  .btn {
    padding: 0.875rem 1.25rem;
    font-size: 0.875rem;
  }
  
  .file-upload-area {
    padding: 1.5rem 1rem;
  }
}

/* ========================================
   RTL Enhancements
======================================== */

[dir="rtl"] .form-select {
  background-position: right 0.75rem center;
  padding: 0.75rem 1rem 0.75rem 2.5rem;
}

[dir="rtl"] .form-control.is-valid,
[dir="rtl"] .form-control.is-invalid {
  background-position: left calc(0.375em + 0.1875rem) center;
  padding-right: 2.5rem;
  padding-left: 1rem;
}

/* ========================================
   Print Styles
======================================== */

@media print {
  .modern-form,
  .form-section {
    box-shadow: none;
    border: 1px solid #d1d5db;
  }
  
  .btn {
    display: none;
  }
  
  .form-control {
    border: 1px solid #d1d5db;
    box-shadow: none;
  }
}