/* ============================================================
   kca-payment-form.css
   วางไฟล์นี้ไว้ใน: wp-content/themes/YOUR-THEME/kca-payment-form.css
   ============================================================ */

:root {
  --kca-ocean:      #1a6e8a;
  --kca-ocean-dark: #0d4f65;
  --kca-ocean-light:#e8f4f8;
  --kca-teal:       #2a9d8f;
  --kca-gold:       #e9a84c;
  --kca-gold-dark:  #c8891e;
  --kca-sand:       #fdf6ec;
  --kca-text:       #2c3e50;
  --kca-muted:      #6b7c8d;
  --kca-border:     #c8dde6;
  --kca-error:      #e05c5c;
}

/* Wrapper */
.kca-form-wrapper {
  max-width: 620px;
  margin: 40px auto 60px;
  padding: 0 16px;
  font-family: Prompt, sans-serif;
}

/* Card */
.kca-form-card {
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 8px 36px rgba(26,110,138,0.13);
  overflow: hidden;
  border-top: 4px solid var(--kca-gold);
  padding-bottom: 40px;
}

/* Top header inside card */
.kca-form-top {
  background: linear-gradient(160deg, var(--kca-ocean-dark) 0%, var(--kca-ocean) 55%, var(--kca-teal) 100%);
  padding: 36px 40px 32px;
  text-align: center;
  color: #fff;
}

.kca-brand-icon {
  width: 56px;
  height: 56px;
  background: rgba(255,255,255,0.15);
  border: 2px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  margin-bottom: 14px;
}

.kca-form-title {
  font-size: 24px !important;
  color: #fff !important;
  margin: 0 0 6px !important;
  font-weight: 700 !important;
}

.kca-form-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.8);
  margin: 0;
}

/* Form body */
#kcaPaymentForm {
  padding: 32px 40px 40px;
}

/* Section label */
.kca-section-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--kca-ocean);
  margin: 28px 0 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.kca-section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--kca-border);
}

.kca-section-label:first-child { margin-top: 0; }

/* Row grid */
.kca-row { display: grid; gap: 16px; }
.kca-row.two-col { grid-template-columns: 1fr 1fr; }

/* Field */
.kca-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.kca-field:last-child { margin-bottom: 0; }

.kca-field label {
  font-size: 13px;
  font-weight: 600;
  color: var(--kca-text);
}

.req { color: var(--kca-error); margin-left: 2px; }
.kca-optional { color: var(--kca-muted); font-weight: 400; }

/* Inputs */
.kca-field input[type="text"],
.kca-field input[type="email"],
.kca-field input[type="tel"],
.kca-field textarea {
  width: 100%;
  padding: 11px 14px;
  border: 1.5px solid var(--kca-border);
  border-radius: 8px;
  font-family: Prompt, sans-serif;
  font-size: 15px;
  color: var(--kca-text);
  background: #fff;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  box-sizing: border-box;
}

.kca-field input:focus,
.kca-field textarea:focus {
  border-color: var(--kca-ocean);
  box-shadow: 0 0 0 3px rgba(26,110,138,0.1);
}

.kca-field input::placeholder,
.kca-field textarea::placeholder {
  color: #b0bec8;
  font-weight: 300;
}

.kca-field textarea {
  resize: vertical;
  min-height: 90px;
}

/* Validation error */
.kca-error {
  font-size: 12px;
  color: var(--kca-error);
  display: none;
}

.kca-field.has-error input,
.kca-field.has-error textarea {
  border-color: var(--kca-error);
}

.kca-field.has-error .kca-error { display: block; }

/* File upload */
.kca-upload-area {
  border: 2px dashed var(--kca-border);
  border-radius: 10px;
  padding: 28px 20px;
  text-align: center;
  cursor: pointer;
  background: var(--kca-ocean-light);
  position: relative;
  transition: all 0.2s;
}

.kca-upload-area:hover,
.kca-upload-area.dragover {
  border-color: var(--kca-ocean);
  background: #d4eaf2;
}

.kca-upload-area input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.kca-upload-icon  { font-size: 32px; display: block; margin-bottom: 8px; }
.kca-upload-title { font-size: 14px; font-weight: 600; color: var(--kca-ocean); margin-bottom: 4px; }
.kca-upload-sub   { font-size: 12px; color: var(--kca-muted); }

/* File preview */
.kca-file-preview {
  display: none;
  background: #f0f9f8;
  border: 1px solid var(--kca-teal);
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  color: var(--kca-teal);
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.kca-file-preview.show { display: flex; }

.kca-remove-file {
  margin-left: auto;
  cursor: pointer;
  color: var(--kca-muted);
  font-size: 16px;
  line-height: 1;
}

/* Submit button */
.kca-submit-btn {
  width: 100%;
  padding: 15px;
  background: linear-gradient(135deg, var(--kca-gold) 0%, var(--kca-gold-dark) 100%);
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: "Open Sans", Prompt, sans-serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  margin-top: 28px;
  box-shadow: 0 4px 16px rgba(233,168,76,0.4);
  transition: transform 0.15s, box-shadow 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.kca-submit-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(233,168,76,0.5);
}

.kca-submit-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
}

/* Spinner */
.kca-spinner {
  display: none;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: kcaSpin 0.7s linear infinite;
}

.kca-submit-btn.loading .kca-spinner { display: inline-block; }
.kca-submit-btn.loading #kcaBtnText { display: none; }

@keyframes kcaSpin { to { transform: rotate(360deg); } }

/* Footer note */
.kca-form-note {
  text-align: center;
  margin-top: 16px;
  font-size: 12px;
  color: var(--kca-muted);
  font-family: "Open Sans", Prompt, sans-serif;
}

.kca-form-note a { color: var(--kca-ocean); text-decoration: none; }

/* ── Popup ── */
.kca-popup-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(13,79,101,0.55);
  backdrop-filter: blur(4px);
  z-index: 99999;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.kca-popup-overlay.show {
  display: flex;
  animation: kcaFadeOverlay 0.3s ease;
}

@keyframes kcaFadeOverlay {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.kca-popup-box {
  background: #fff;
  border-radius: 20px;
  max-width: 420px;
  width: 100%;
  padding: 48px 36px 40px;
  text-align: center;
  position: relative;
  box-shadow: 0 24px 64px rgba(13,79,101,0.3);
  animation: kcaSlideUp 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  overflow: hidden;
  font-family: "Open Sans", Prompt, sans-serif;
}

@keyframes kcaSlideUp {
  from { transform: translateY(40px) scale(0.95); opacity: 0; }
  to   { transform: translateY(0) scale(1); opacity: 1; }
}

.kca-popup-box::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--kca-teal), var(--kca-ocean), var(--kca-gold));
}

.kca-popup-ripple {
  position: relative;
  width: 100px;
  height: 100px;
  margin: 0 auto 24px;
}

.kca-popup-ripple::before,
.kca-popup-ripple::after {
  content: '';
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  border: 2px solid var(--kca-teal);
  opacity: 0;
  animation: kcaRipple 2s ease-out infinite;
}

.kca-popup-ripple::after { animation-delay: 0.6s; }

@keyframes kcaRipple {
  0%   { transform: scale(0.85); opacity: 0.5; }
  100% { transform: scale(1.4);  opacity: 0; }
}

.kca-popup-icon {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, var(--kca-teal), var(--kca-ocean));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 42px;
  color: #fff;
  position: relative;
  z-index: 1;
  box-shadow: 0 8px 24px rgba(42,157,143,0.4);
  animation: kcaPopIn 0.5s 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275) both;
}

@keyframes kcaPopIn {
  from { transform: scale(0) rotate(-20deg); opacity: 0; }
  to   { transform: scale(1) rotate(0deg);   opacity: 1; }
}

.kca-popup-title {
  font-size: 24px;
  font-weight: 700;
  color: var(--kca-ocean-dark);
  margin: 0 0 10px;
  animation: kcaFadeUp 0.4s 0.35s ease both;
}

.kca-popup-sub {
  font-size: 14px;
  color: var(--kca-muted);
  line-height: 1.8;
  margin: 0 0 24px;
  animation: kcaFadeUp 0.4s 0.45s ease both;
}

@keyframes kcaFadeUp {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.kca-popup-info {
  background: var(--kca-ocean-light);
  border-radius: 10px;
  padding: 14px 18px;
  font-size: 13px;
  color: var(--kca-ocean);
  display: flex;
  align-items: center;
  gap: 10px;
  text-align: left;
  margin-bottom: 24px;
  animation: kcaFadeUp 0.4s 0.5s ease both;
}

.kca-info-icon { font-size: 18px; flex-shrink: 0; }

.kca-popup-close-btn {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--kca-gold), var(--kca-gold-dark));
  color: #fff;
  border: none;
  border-radius: 10px;
  font-family: "Open Sans", Prompt, sans-serif;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: 0.04em;
  box-shadow: 0 4px 16px rgba(233,168,76,0.4);
  transition: transform 0.15s, box-shadow 0.15s;
  animation: kcaFadeUp 0.4s 0.55s ease both;
}

.kca-popup-close-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(233,168,76,0.5);
}

/* Confetti */
.kca-confetti {
  position: absolute;
  pointer-events: none;
  border-radius: 2px;
  animation: kcaConfettiFall 1.2s ease-out forwards;
}

@keyframes kcaConfettiFall {
  0%   { transform: translateY(-20px) rotate(0deg);   opacity: 1; }
  100% { transform: translateY(130px) rotate(360deg); opacity: 0; }
}

/* Responsive */
@media (max-width: 520px) {
  #kcaPaymentForm        { padding: 24px 20px 32px; }
  .kca-form-top          { padding: 28px 20px 24px; }
  .kca-row.two-col       { grid-template-columns: 1fr; }
  .kca-popup-box         { padding: 36px 22px 30px; }
}