/* ═══════════════════════════════════════════════════════
   Skill Enrollment Form — form.css  (v1.2.0 Cross-Browser)
   Fixes:
   [CB-1] CSS Grid with IE11 fallback (float-based)
   [CB-2] CSS Custom Properties with hardcoded fallbacks
   [CB-3] -moz-appearance added alongside -webkit-appearance
   [CB-4] accent-color with checkbox override for older browsers
   [CB-5] flexbox gap replaced with margin for Safari <14.1
   [CB-6] -webkit-linear-gradient for older Safari/Chrome
   [CB-7] input[type=date] min-height for Firefox text fallback
═══════════════════════════════════════════════════════ */

/* ── RESET & BASE ── */
.sef-wrapper * {
  -webkit-box-sizing: border-box;
          box-sizing: border-box;
  margin: 0;
  padding: 0;
}

.sef-wrapper {
  font-family: var(--sef-font-body, 'Nunito', sans-serif);
  color: var(--sef-text, #1a1a2e);
  background: var(--sef-bg, #ffffff);
  max-width: 720px;
  margin: 0 auto;
  padding: 16px;
}

/* ── SECTION CARDS ── */
.sef-section {
  background: var(--sef-section-bg, #ffffff);
  border: 1px solid var(--sef-border, #e2e0f0);
  -webkit-border-radius: 16px;
          border-radius: 16px;
  padding: 28px 24px 24px;
  margin-bottom: 20px;
  -webkit-box-shadow: 0 2px 12px rgba(91,79,207,0.06);
          box-shadow: 0 2px 12px rgba(91,79,207,0.06);
}

.sef-section-flat {
  padding: 20px 24px;
}

/* ── SECTION HEADER ── */
.sef-section-header {
  /* [CB-5] Use margin instead of gap for older Safari */
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--sef-border, #e2e0f0);
}

.sef-section-icon {
  font-size: 1.2rem;
  margin-right: 10px; /* [CB-5] gap replacement */
}

.sef-section-title {
  font-family: var(--sef-font-heading, 'Poppins', sans-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--sef-primary, #5b4fcf);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

/* ── GRIDS ──
   [CB-1] IE11 fallback: float-based layout.
   IE11 has partial grid support but not auto-placement.
   We use a float fallback then override with grid for modern browsers. */

.sef-grid {
  /* IE11 float fallback */
  overflow: hidden; /* clearfix */
}
.sef-grid:after {
  content: '';
  display: table;
  clear: both;
}

.sef-grid .sef-field {
  /* IE11: equal-width float columns */
  float: left;
  width: 100%;
  padding: 0 6px;
  margin-bottom: 16px;
}

.sef-grid-2 .sef-field  { width: 50%; }
.sef-grid-3 .sef-field  { width: 33.33%; }
.sef-field-full         { width: 100% !important; float: none; clear: both; }

/* Modern browsers override with proper grid */
@supports (display: grid) {
  .sef-grid {
    display: -ms-grid;
    display: grid;
    gap: 16px;
    overflow: visible;
  }
  .sef-grid:after { display: none; }
  .sef-grid .sef-field {
    float: none;
    width: auto;
    padding: 0;
    margin-bottom: 0;
  }
  .sef-grid-2 { -ms-grid-columns: 1fr 1fr; grid-template-columns: repeat(2, 1fr); }
  .sef-grid-3 { -ms-grid-columns: 1fr 1fr 1fr; grid-template-columns: repeat(3, 1fr); }
  .sef-field-full { grid-column: 1 / -1; }
}

/* ── FIELDS ── */
.sef-field {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-orient: vertical;
  -webkit-box-direction: normal;
      -ms-flex-direction: column;
          flex-direction: column;
}

.sef-field label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--sef-label, #444466);
  letter-spacing: 0.01em;
  margin-bottom: 6px; /* [CB-5] gap replacement */
}

.sef-field label .req { color: #e55; margin-left: 2px; }
.sef-field label em   { font-weight: 400; color: var(--sef-placeholder, #aaaacc); font-style: normal; }

/* ── INPUTS ──
   [CB-3] Added -moz-appearance and all vendor prefixes */
.sef-wrapper input[type="text"],
.sef-wrapper input[type="email"],
.sef-wrapper input[type="tel"],
.sef-wrapper input[type="number"],
.sef-wrapper input[type="date"],
.sef-wrapper select,
.sef-wrapper textarea {
  width: 100%;
  background: var(--sef-input-bg, #f4f3fb);
  border: 1.5px solid var(--sef-border, #e2e0f0);
  -webkit-border-radius: 10px;
          border-radius: 10px;
  padding: 11px 14px;
  font-family: var(--sef-font-body, 'Nunito', sans-serif);
  font-size: 0.88rem;
  color: var(--sef-text, #1a1a2e);
  -webkit-transition: border-color 0.2s, -webkit-box-shadow 0.2s;
          transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  -webkit-appearance: none;
     -moz-appearance: none;
          appearance: none;
}

/* [CB-7] Firefox shows text input for date — ensure enough height */
.sef-wrapper input[type="date"] {
  min-height: 42px;
  line-height: 1.4;
}

.sef-wrapper input[readonly] { opacity: 0.7; cursor: not-allowed; }

.sef-wrapper input::-webkit-input-placeholder { color: var(--sef-placeholder, #aaaacc); }
.sef-wrapper input::-moz-placeholder          { color: var(--sef-placeholder, #aaaacc); opacity: 1; }
.sef-wrapper input:-ms-input-placeholder      { color: var(--sef-placeholder, #aaaacc); }
.sef-wrapper input::placeholder               { color: var(--sef-placeholder, #aaaacc); }
.sef-wrapper textarea::-webkit-input-placeholder { color: var(--sef-placeholder, #aaaacc); }
.sef-wrapper textarea::-moz-placeholder          { color: var(--sef-placeholder, #aaaacc); opacity: 1; }
.sef-wrapper textarea::placeholder               { color: var(--sef-placeholder, #aaaacc); }

.sef-wrapper input:focus,
.sef-wrapper select:focus,
.sef-wrapper textarea:focus {
  border-color: var(--sef-primary, #5b4fcf);
  -webkit-box-shadow: 0 0 0 3px rgba(91,79,207,0.12);
          box-shadow: 0 0 0 3px rgba(91,79,207,0.12);
}

.sef-wrapper input.sef-error,
.sef-wrapper select.sef-error,
.sef-wrapper textarea.sef-error {
  border-color: #e55;
  -webkit-box-shadow: 0 0 0 3px rgba(221,85,85,0.12);
          box-shadow: 0 0 0 3px rgba(221,85,85,0.12);
}

/* SELECT ARROW — [CB-3] -moz-appearance already set above */
.sef-wrapper select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235b4fcf' stroke-width='1.8' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
}

/* ── PHONE WRAP ── */
.sef-phone-wrap {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: stretch;
      -ms-flex-align: stretch;
          align-items: stretch;
}

.sef-phone-prefix {
  background: var(--sef-primary, #5b4fcf);
  color: #fff;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0 12px;
  -webkit-border-radius: 10px 0 0 10px;
          border-radius: 10px 0 0 10px;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
  white-space: nowrap;
  border: 1.5px solid var(--sef-primary, #5b4fcf);
  border-right: none;
}

.sef-phone-wrap input {
  -webkit-border-radius: 0 10px 10px 0 !important;
          border-radius: 0 10px 10px 0 !important;
  -webkit-box-flex: 1;
      -ms-flex: 1;
          flex: 1;
}

/* ── ELIGIBILITY NOTE ── */
.sef-eligibility-note {
  margin-top: 8px;
  background: rgba(91,79,207,0.06);
  border: 1px solid rgba(91,79,207,0.2);
  -webkit-border-radius: 8px;
          border-radius: 8px;
  padding: 9px 13px;
  font-size: 0.78rem;
  color: var(--sef-label, #444466);
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: flex-start;
      -ms-flex-align: flex-start;
          align-items: flex-start;
  line-height: 1.5;
}
.sef-eligibility-note span { margin-right: 7px; } /* [CB-5] gap replacement */

/* ── TEXTAREA ── */
.sef-wrapper textarea {
  resize: vertical;
  min-height: 100px;
  line-height: 1.6;
}

/* ── DECLARATION ── */
.sef-declaration-wrap {
  margin-bottom: 24px;
  padding: 16px 20px;
  background: rgba(91,79,207,0.04);
  border: 1px solid var(--sef-border, #e2e0f0);
  -webkit-border-radius: 10px;
          border-radius: 10px;
}

.sef-declaration-label {
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-align: flex-start;
      -ms-flex-align: flex-start;
          align-items: flex-start;
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--sef-label, #444466);
  line-height: 1.6;
}

/* [CB-4] accent-color not supported in Firefox <92, Safari <15.4
   Fallback: custom styled checkbox using outline + background trick */
.sef-declaration-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  min-width: 18px;
  margin-top: 1px;
  margin-right: 12px; /* [CB-5] gap replacement */
  cursor: pointer;
  /* accent-color for modern browsers */
  accent-color: var(--sef-primary, #5b4fcf);
  /* Fallback border style for older browsers that ignore accent-color */
  border: 2px solid var(--sef-primary, #5b4fcf);
  -webkit-border-radius: 3px;
          border-radius: 3px;
  -webkit-appearance: auto;
     -moz-appearance: auto;
          appearance: auto; /* Keep native for checkbox so it's checkable in all browsers */
}

/* ── MESSAGE BOX ── */
.sef-msg {
  padding: 14px 18px;
  -webkit-border-radius: 10px;
          border-radius: 10px;
  font-size: 0.88rem;
  margin-bottom: 16px;
  font-weight: 500;
}

.sef-msg.sef-success   { background: #e6f9ef; color: #1a7a3c; border: 1px solid #7fcca0; }
.sef-msg.sef-error-msg { background: #fdf0f0; color: #a00000; border: 1px solid #f5aaaa; }

/* ── SUBMIT BUTTON ──
   [CB-6] -webkit-linear-gradient for older Safari/Chrome */
.sef-submit-btn {
  display: block;
  width: 100%;
  max-width: 360px;
  margin: 0 auto;
  padding: 16px 24px;
  background: -webkit-linear-gradient(315deg, var(--sef-primary, #5b4fcf) 0%, var(--sef-accent, #7c6ee0) 100%);
  background:         linear-gradient(135deg, var(--sef-primary, #5b4fcf) 0%, var(--sef-accent, #7c6ee0) 100%);
  color: #fff;
  border: none;
  -webkit-border-radius: 50px;
          border-radius: 50px;
  font-family: var(--sef-font-heading, 'Poppins', sans-serif);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  -webkit-transition: -webkit-transform 0.15s, -webkit-box-shadow 0.15s, opacity 0.15s;
          transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
  -webkit-box-shadow: 0 4px 20px rgba(91,79,207,0.35);
          box-shadow: 0 4px 20px rgba(91,79,207,0.35);
}

.sef-submit-btn:hover:not(:disabled) {
  -webkit-transform: translateY(-2px);
          transform: translateY(-2px);
  -webkit-box-shadow: 0 8px 28px rgba(91,79,207,0.45);
          box-shadow: 0 8px 28px rgba(91,79,207,0.45);
}

.sef-submit-btn:active  { -webkit-transform: translateY(0); transform: translateY(0); }
.sef-submit-btn:disabled { opacity: 0.7; cursor: not-allowed; }

/* ── FOOTER NOTE ── */
.sef-footer-note {
  text-align: center;
  font-size: 0.76rem;
  color: var(--sef-placeholder, #aaaacc);
  margin-top: 14px;
}

/* ═══════════════════════════════
   RESPONSIVE
═══════════════════════════════ */
@media (max-width: 600px) {
  .sef-wrapper { padding: 10px; }
  .sef-section { padding: 20px 16px 18px; -webkit-border-radius: 12px; border-radius: 12px; }
  .sef-grid-2 .sef-field,
  .sef-grid-3 .sef-field { width: 100%; }

  @supports (display: grid) {
    .sef-grid-2, .sef-grid-3 { grid-template-columns: 1fr; }
  }

  .sef-section-title { font-size: 0.88rem; }
  .sef-submit-btn    { max-width: 100%; }
}

@media (max-width: 400px) {
  .sef-section { padding: 16px 12px; }
}