/* form.css — TigerHawk Discovery Form Styles */

/* =============================================
   ANIMATED GRADIENT MESH BACKGROUND
   ============================================= */
@property --mesh-angle {
  syntax: '<angle>';
  initial-value: 0deg;
  inherits: false;
}

.gradient-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(ellipse 80% 50% at 20% 20%, rgba(30, 66, 155, 0.18) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 80% 30%, rgba(174, 105, 73, 0.1) 0%, transparent 55%),
    radial-gradient(ellipse 70% 60% at 50% 80%, rgba(115, 133, 162, 0.08) 0%, transparent 55%),
    radial-gradient(ellipse 50% 50% at 70% 70%, rgba(30, 66, 155, 0.06) 0%, transparent 50%);
  background-color: var(--color-bg);
  animation: meshDrift 20s ease-in-out infinite alternate;
}

@keyframes meshDrift {
  0% {
    background:
      radial-gradient(ellipse 80% 50% at 20% 20%, rgba(30, 66, 155, 0.18) 0%, transparent 60%),
      radial-gradient(ellipse 60% 40% at 80% 30%, rgba(174, 105, 73, 0.1) 0%, transparent 55%),
      radial-gradient(ellipse 70% 60% at 50% 80%, rgba(115, 133, 162, 0.08) 0%, transparent 55%),
      radial-gradient(ellipse 50% 50% at 70% 70%, rgba(30, 66, 155, 0.06) 0%, transparent 50%);
    background-color: var(--color-bg);
  }
  100% {
    background:
      radial-gradient(ellipse 70% 60% at 40% 30%, rgba(30, 66, 155, 0.15) 0%, transparent 55%),
      radial-gradient(ellipse 50% 50% at 60% 20%, rgba(174, 105, 73, 0.12) 0%, transparent 50%),
      radial-gradient(ellipse 60% 50% at 30% 70%, rgba(115, 133, 162, 0.1) 0%, transparent 60%),
      radial-gradient(ellipse 60% 40% at 80% 60%, rgba(30, 66, 155, 0.08) 0%, transparent 50%);
    background-color: var(--color-bg);
  }
}

.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: -1;
  opacity: 0.03;
  pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* =============================================
   FORM WRAPPER
   ============================================= */
.form-wrapper {
  max-width: var(--content-default);
  margin: 0 auto;
  padding: var(--space-6) var(--space-4);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

@media (min-width: 768px) {
  .form-wrapper {
    padding: var(--space-10) var(--space-6);
  }
}

/* =============================================
   HEADER
   ============================================= */
.form-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.tvb-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-6);
}

.tvb-logo-img {
  height: 56px;
  width: auto;
  object-fit: contain;
  opacity: 0.9;
  transition: opacity var(--transition-interactive);
}

.tvb-logo:hover .tvb-logo-img {
  opacity: 1;
}

@media (min-width: 768px) {
  .tvb-logo-img {
    height: 72px;
  }
}

.form-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
  letter-spacing: -0.02em;
}

.form-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* =============================================
   PROGRESS BAR
   ============================================= */
.progress-container {
  margin-bottom: var(--space-8);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-2);
}

.progress-step {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-text-muted);
}

.progress-section {
  font-family: var(--font-display);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-accent);
  letter-spacing: 0.04em;
}

.progress-track {
  height: 4px;
  background: var(--color-surface-offset);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width 500ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* =============================================
   FORM STEPS
   ============================================= */
.steps-container {
  position: relative;
  overflow: hidden;
  flex: 1;
}

.form-step {
  position: absolute;
  inset: 0;
  opacity: 0;
  transform: translateX(40px);
  pointer-events: none;
  transition: opacity 400ms cubic-bezier(0.16, 1, 0.3, 1),
              transform 400ms cubic-bezier(0.16, 1, 0.3, 1);
  overflow-y: auto;
  padding-bottom: var(--space-8);
}

.form-step.active {
  position: relative;
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.form-step.exit-left {
  opacity: 0;
  transform: translateX(-40px);
}

.form-step.exit-right {
  opacity: 0;
  transform: translateX(40px);
}

/* Step header */
.step-header {
  margin-bottom: var(--space-8);
}

.step-label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--color-primary-hover);
  background: var(--color-primary-highlight);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.step-title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-2);
  letter-spacing: -0.01em;
}

.step-desc {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* =============================================
   FORM FIELDS
   ============================================= */
.fields-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.field label {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text);
  line-height: 1.4;
}

.required-mark {
  color: var(--color-accent);
  margin-left: 2px;
}

.field-helper {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  line-height: 1.5;
  margin-top: calc(-1 * var(--space-1));
}

.field-error {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-error);
  min-height: 0;
  opacity: 0;
  transition: opacity var(--transition-interactive);
}

.field-error.visible {
  opacity: 1;
}

/* Textarea */
textarea {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  padding: var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text);
  resize: vertical;
  min-height: 88px;
  line-height: 1.6;
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive),
              background var(--transition-interactive);
}

textarea::placeholder {
  color: var(--color-text-faint);
}

textarea:hover {
  border-color: rgba(115, 133, 162, 0.3);
  background: var(--color-surface-dynamic);
}

textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
  background: var(--color-surface-2);
}

textarea.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 3px rgba(229, 57, 53, 0.15);
}

/* Select */
.select-wrapper {
  position: relative;
}

select {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-10) var(--space-3) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  color: var(--color-text);
  width: 100%;
  appearance: none;
  cursor: pointer;
  transition: border-color var(--transition-interactive),
              box-shadow var(--transition-interactive);
}

select:hover {
  border-color: rgba(115, 133, 162, 0.3);
}

select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-highlight);
}

select option {
  background: var(--color-surface-2);
  color: var(--color-text);
}

.select-chevron {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
  pointer-events: none;
}

/* Checkboxes */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-2) var(--space-4);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  transition: background var(--transition-interactive),
              border-color var(--transition-interactive),
              color var(--transition-interactive);
  user-select: none;
  min-height: 44px;
}

.checkbox-label:hover {
  border-color: rgba(115, 133, 162, 0.3);
  background: var(--color-surface-dynamic);
}

.checkbox-label input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.checkbox-custom {
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-interactive),
              border-color var(--transition-interactive);
  flex-shrink: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
  content: '';
  width: 10px;
  height: 6px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translateY(-1px);
}

.checkbox-label input[type="checkbox"]:checked ~ * {
  color: var(--color-text);
}

.checkbox-label:has(input:checked) {
  background: var(--color-primary-highlight);
  border-color: rgba(30, 66, 155, 0.3);
  color: var(--color-text);
}

.checkbox-label input[type="checkbox"]:focus-visible + .checkbox-custom {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* =============================================
   NAVIGATION BUTTONS
   ============================================= */
.form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6) 0;
  border-top: 1px solid var(--color-divider);
  margin-top: var(--space-4);
}

.btn-next, .btn-submit {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-6);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-interactive),
              transform var(--transition-interactive),
              box-shadow var(--transition-interactive);
  min-height: 44px;
}

.btn-next:hover, .btn-submit:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

.btn-next:active, .btn-submit:active {
  transform: translateY(0);
  background: var(--color-primary-active);
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-6);
  background: transparent;
  color: var(--color-text-muted);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: color var(--transition-interactive),
              border-color var(--transition-interactive),
              background var(--transition-interactive);
  min-height: 44px;
}

.btn-back:hover {
  color: var(--color-text);
  border-color: rgba(115, 133, 162, 0.4);
  background: rgba(115, 133, 162, 0.05);
}

.btn-back:active {
  background: rgba(115, 133, 162, 0.1);
}

/* =============================================
   CONFIRMATION SCREEN
   ============================================= */
.confirmation-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-12) var(--space-4);
}

.confirmation-icon {
  margin-bottom: var(--space-6);
  animation: confirmPulse 2s ease-in-out infinite;
}

@keyframes confirmPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.05); opacity: 0.9; }
}

.confirmation-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-3);
}

.confirmation-subtitle {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin-bottom: var(--space-6);
}

.confirmation-note {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  max-width: 460px;
  line-height: 1.7;
  margin-bottom: var(--space-3);
}

.confirmation-sign {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  margin-bottom: var(--space-8);
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 500;
  padding: var(--space-3) var(--space-6);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-interactive),
              border-color var(--transition-interactive),
              transform var(--transition-interactive);
  min-height: 44px;
}

.btn-download:hover {
  background: var(--color-surface-2);
  border-color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-download:active {
  transform: translateY(0);
}

/* =============================================
   FOOTER
   ============================================= */
.form-footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-8) 0 var(--space-4);
  border-top: 1px solid var(--color-divider);
  margin-top: auto;
}

.footer-pplx {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  text-decoration: none;
  transition: color var(--transition-interactive);
}

.footer-pplx:hover {
  color: var(--color-text);
}

.footer-copy {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 600px) {
  .form-title {
    font-size: clamp(1.5rem, 1rem + 3vw, 2.5rem);
  }

  .checkbox-group {
    flex-direction: column;
    gap: var(--space-2);
  }

  .checkbox-label {
    width: 100%;
  }

  .form-nav {
    gap: var(--space-3);
  }

  .btn-next, .btn-back, .btn-submit {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
  }

  .step-title {
    font-size: var(--text-lg);
  }

  textarea {
    font-size: 16px; /* Prevent iOS zoom */
  }

  select {
    font-size: 16px; /* Prevent iOS zoom */
  }
}

@media (min-width: 768px) {
  .checkbox-group {
    gap: var(--space-3);
  }

  .form-step {
    padding-bottom: var(--space-12);
  }
}

/* =============================================
   ANIMATIONS
   ============================================= */
@media (prefers-reduced-motion: reduce) {
  .gradient-mesh {
    animation: none;
  }
  .confirmation-icon {
    animation: none;
  }
  .form-step {
    transition: opacity 0.01ms;
    transform: none !important;
  }
  .form-step.active {
    transform: none;
  }
}