/* ============================================
   MODERN FORM STYLES & INPUT ENHANCEMENTS
   ============================================ */

/* Form Groups */
.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-dark, #1e293b);
  font-size: 0.9rem;
}

.form-group label .required {
  color: #ef4444;
  margin-left: 0.25rem;
}

.form-group .form-text {
  font-size: 0.85rem;
  color: var(--text-muted, #94a3b8);
  margin-top: 0.5rem;
  display: block;
}

/* Input Fields */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
input[type="tel"],
input[type="url"],
input[type="search"],
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 1rem;
  border: 2px solid #e2e8f0;
  border-radius: 0.75rem;
  background-color: #f8fafc;
  color: var(--text-dark, #1e293b);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
textarea:focus,
select:focus {
  border-color: #6366f1;
  background-color: #fafbff;
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* Input Placeholder */
input::placeholder,
textarea::placeholder {
  color: var(--text-muted, #94a3b8);
}

/* Disabled Inputs */
input:disabled,
textarea:disabled,
select:disabled {
  background-color: #f1f5f9;
  color: var(--text-muted, #94a3b8);
  cursor: not-allowed;
  opacity: 0.5;
}

/* Textarea */
textarea {
  resize: vertical;
  min-height: 120px;
  font-family: inherit;
}

textarea:focus {
  resize: vertical;
}

/* Select Elements */
select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236366f1' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
  cursor: pointer;
}

select:focus {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236366f1' d='M6 3L1 8h10z'/%3E%3C/svg%3E");
}

/* Input Validation States */
input.is-valid,
textarea.is-valid,
select.is-valid {
  border-color: #10b981;
  background-color: rgba(16, 185, 129, 0.02);
}

input.is-valid:focus,
textarea.is-valid:focus,
select.is-valid:focus {
  border-color: #10b981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

input.is-invalid,
textarea.is-invalid,
select.is-invalid {
  border-color: #ef4444;
  background-color: rgba(239, 68, 68, 0.02);
}

input.is-invalid:focus,
textarea.is-invalid:focus,
select.is-invalid:focus {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Validation Feedback */
.valid-feedback,
.invalid-feedback {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
}

.valid-feedback {
  color: #10b981;
}

.invalid-feedback {
  color: #ef4444;
}

input.is-valid ~ .valid-feedback,
textarea.is-valid ~ .valid-feedback,
select.is-valid ~ .valid-feedback {
  display: block;
}

input.is-invalid ~ .invalid-feedback,
textarea.is-invalid ~ .invalid-feedback,
select.is-invalid ~ .invalid-feedback {
  display: block;
}

/* Form Control Icon/Addon */
.input-group {
  display: flex;
  position: relative;
}

.input-group-text {
  padding: 0.75rem 1rem;
  background-color: #f1f5f9;
  border: 2px solid #e2e8f0;
  color: var(--text-light, #475569);
  font-weight: 500;
}

.input-group > input,
.input-group > textarea,
.input-group > select {
  flex: 1;
}

.input-group > *:first-child {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.input-group > *:last-child {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* Checkbox & Radio Inputs */
input[type="checkbox"],
input[type="radio"] {
  appearance: none;
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border: 2px solid #e2e8f0;
  border-radius: 0.375rem;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-block;
  vertical-align: middle;
  margin-right: 0.5rem;
  position: relative;
  background-color: white;
}

input[type="radio"] {
  border-radius: 50%;
}

input[type="checkbox"]:checked,
input[type="radio"]:checked {
  background: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
  border-color: #6366f1;
}

input[type="checkbox"]:checked::after {
  content: '✓';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  color: white;
  font-size: 12px;
  font-weight: bold;
}

input[type="checkbox"]:focus,
input[type="radio"]:focus {
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

input[type="checkbox"]:disabled,
input[type="radio"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Checkbox/Radio Label */
.form-check {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.form-check input {
  margin-right: 0.75rem;
  margin-bottom: 0;
}

.form-check label {
  margin-bottom: 0;
  cursor: pointer;
  user-select: none;
  font-weight: 500;
  color: var(--text-dark, #1e293b);
}

/* Range Input */
input[type="range"] {
  width: 100%;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(to right, #6366f1 0%, #3b82f6 100%);
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
  transition: all 0.3s ease;
}

input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #6366f1 0%, #3b82f6 100%);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(99, 102, 241, 0.3);
  transition: all 0.3s ease;
}

input[type="range"]::-moz-range-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* File Input */
input[type="file"] {
  padding: 0.5rem;
  border: 2px dashed #e2e8f0;
  border-radius: 0.75rem;
  cursor: pointer;
}

input[type="file"]:focus {
  border-color: #6366f1;
  background-color: rgba(99, 102, 241, 0.02);
}

.file-upload-wrapper {
  position: relative;
  overflow: hidden;
}

.file-upload-wrapper input[type="file"] {
  position: absolute;
  left: -9999px;
}

.file-upload-label {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 2px dashed #e2e8f0;
  border-radius: 0.875rem;
  background-color: #f8fafc;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.file-upload-label:hover {
  border-color: #6366f1;
  background-color: rgba(99, 102, 241, 0.02);
}

.file-upload-label i {
  font-size: 2rem;
  color: #6366f1;
  margin-right: 1rem;
}

/* Form Row (for layout) */
.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

/* Floating Labels */
.form-floating {
  position: relative;
  display: flex;
  flex-direction: column-reverse;
}

.form-floating > label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: var(--text-muted, #94a3b8);
  pointer-events: none;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  font-size: 1rem;
  font-weight: 500;
}

.form-floating > input:focus ~ label,
.form-floating > input:not(:placeholder-shown) ~ label,
.form-floating > textarea:focus ~ label,
.form-floating > textarea:not(:placeholder-shown) ~ label {
  top: -0.5rem;
  left: 0.75rem;
  font-size: 0.8rem;
  color: #6366f1;
  background: white;
  padding: 0 0.25rem;
}

/* Form Control States */
.form-control-static {
  padding-top: 0.75rem;
  padding-bottom: 0.75rem;
  color: var(--text-dark, #1e293b);
}

/* Search Input Styling */
input[type="search"] {
  padding-left: 2.5rem;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cpath d='m21 21-4.35-4.35'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: 0.75rem center;
}

input[type="search"]:focus {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%236366f1' stroke-width='2'%3E%3Ccircle cx='11' cy='11' r='8'%3E%3C/circle%3E%3Cpath d='m21 21-4.35-4.35'%3E%3C/path%3E%3C/svg%3E");
}

/* Responsive Form Adjustments */
@media (max-width: 768px) {
  .form-row {
    grid-template-columns: 1fr;
  }

  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="number"],
  input[type="date"],
  input[type="time"],
  input[type="tel"],
  input[type="url"],
  input[type="search"],
  textarea,
  select {
    font-size: 16px; /* Prevent zoom on iOS */
  }
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="number"],
  input[type="date"],
  input[type="time"],
  input[type="tel"],
  input[type="url"],
  input[type="search"],
  textarea,
  select {
    background-color: #1e293b;
    color: #f1f5f9;
    border-color: #334155;
  }

  input[type="text"]:focus,
  input[type="email"]:focus,
  input[type="password"]:focus,
  input[type="number"]:focus,
  input[type="date"]:focus,
  input[type="time"]:focus,
  input[type="tel"]:focus,
  input[type="url"]:focus,
  input[type="search"]:focus,
  textarea:focus,
  select:focus {
    background-color: #0f172a;
    border-color: #6366f1;
  }

  input::placeholder,
  textarea::placeholder {
    color: #64748b;
  }
}