/* ============================================================
   FORMCRAFT — Advanced Form System
   CSS Architecture: Custom Properties → Reset → Layout →
   Components → States → Animations → Responsive
   ============================================================ */

/* ── 1. CUSTOM PROPERTIES ──────────────────────────────────── */
:root {
  /* Color palette — warm off-white + deep ink + amber accent */
  --ink:          #1a1612;
  --ink-muted:    #5c554d;
  --ink-faint:    #9a9087;
  --surface:      #faf8f5;
  --surface-2:    #f2ede6;
  --surface-3:    #e8e1d8;
  --border:       #ddd6cc;
  --border-focus: #c8a96e;
  --accent:       #c8a96e;
  --accent-dark:  #a8894e;
  --accent-glow:  rgba(200, 169, 110, 0.18);

  --success:      #2d7d52;
  --success-bg:   #eaf5ef;
  --error:        #b83b3b;
  --error-bg:     #fdf0f0;
  --warning:      #9a6c00;
  --warning-bg:   #fef9ec;

  /* Sidebar */
  --sidebar-bg:   #1a1612;
  --sidebar-text: #e8e1d8;
  --sidebar-muted:#8a8077;
  --sidebar-w:    260px;

  /* Typography */
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'DM Sans', system-ui, sans-serif;

  /* Spacing scale */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-8: 2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;

  /* Radii */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;
  --r-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(26,22,18,.08), 0 1px 2px rgba(26,22,18,.06);
  --shadow-md: 0 4px 16px rgba(26,22,18,.10), 0 2px 6px rgba(26,22,18,.06);
  --shadow-lg: 0 16px 48px rgba(26,22,18,.14), 0 4px 12px rgba(26,22,18,.08);
  --shadow-focus: 0 0 0 3px var(--accent-glow), 0 0 0 1px var(--border-focus);

  /* Transitions */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-out: cubic-bezier(0.0, 0, 0.2, 1);
  --dur-fast: 150ms;
  --dur-med: 280ms;
  --dur-slow: 480ms;
}

/* ── 2. RESET ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--ink);
  background: var(--surface);
  min-height: 100dvh;
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; border: none; background: none; }
ul, ol { list-style: none; }
img, svg { display: block; }

/* ── 3. BACKGROUND DECORATIONS ─────────────────────────────── */
.bg-grid {
  position: fixed; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: 0.35;
  pointer-events: none;
  z-index: 0;
}
.bg-blob {
  position: fixed;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
}
.bg-blob--1 {
  width: 500px; height: 500px;
  top: -150px; right: -100px;
  background: radial-gradient(circle, #e8d8b0 0%, transparent 70%);
}
.bg-blob--2 {
  width: 400px; height: 400px;
  bottom: -100px; left: 200px;
  background: radial-gradient(circle, #d4c8b0 0%, transparent 70%);
}

/* ── 4. LAYOUT ─────────────────────────────────────────────── */
.app-wrapper {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100dvh;
}

/* ── 5. SIDEBAR ────────────────────────────────────────────── */
.sidebar {
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: var(--sp-8) var(--sp-6);
  position: sticky;
  top: 0;
  height: 100dvh;
  overflow: hidden;
}
.sidebar__brand {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-12);
}
.brand-mark {
  display: flex;
  gap: 4px;
  align-items: flex-end;
}
.brand-mark span {
  display: block;
  width: 6px;
  background: var(--accent);
  border-radius: 2px;
}
.brand-mark span:nth-child(1) { height: 14px; }
.brand-mark span:nth-child(2) { height: 20px; }
.brand-mark span:nth-child(3) { height: 10px; }
.brand-name {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: #fff;
}

/* Step Navigator */
.step-nav__list { display: flex; flex-direction: column; gap: var(--sp-2); }
.step-nav__item { position: relative; }
.step-nav__btn {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--r-md);
  transition: background var(--dur-fast) var(--ease);
  text-align: left;
  color: var(--sidebar-muted);
  position: relative;
  overflow: hidden;
}
.step-nav__item.active .step-nav__btn {
  background: rgba(200, 169, 110, 0.12);
  color: var(--accent);
}
.step-nav__item.completed .step-nav__btn { color: var(--sidebar-text); }
.step-nav__number {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  font-variant-numeric: tabular-nums;
  min-width: 20px;
}
.step-nav__label { font-size: 0.875rem; font-weight: 400; }
.step-nav__check {
  margin-left: auto;
  font-size: 0.75rem;
  opacity: 0;
  transform: scale(0.5);
  transition: opacity var(--dur-med) var(--ease), transform var(--dur-med) var(--ease);
  color: var(--accent);
}
.step-nav__item.completed .step-nav__check {
  opacity: 1;
  transform: scale(1);
}
.step-nav__item:not(:last-child)::after {
  content: '';
  position: absolute;
  left: calc(var(--sp-4) + 10px);
  top: calc(100% + 2px);
  width: 1px;
  height: calc(var(--sp-2) - 2px);
  background: rgba(255,255,255,.08);
}
.sidebar__hint {
  margin-top: auto;
  font-size: 0.75rem;
  color: var(--sidebar-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.sidebar__hint::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--success);
  flex-shrink: 0;
  box-shadow: 0 0 0 3px rgba(45,125,82,.25);
}

/* ── 6. FORM PANEL ─────────────────────────────────────────── */
.form-panel {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

/* Progress Bar */
.progress-bar-track {
  position: relative;
  height: 4px;
  background: var(--surface-3);
  flex-shrink: 0;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-dark), var(--accent));
  border-radius: 0 var(--r-full) var(--r-full) 0;
  width: 20%;
  transition: width var(--dur-slow) var(--ease);
  position: relative;
}
.progress-bar-fill::after {
  content: '';
  position: absolute;
  right: 0; top: 50%;
  transform: translateY(-50%);
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
}
.progress-bar-label {
  position: absolute;
  right: var(--sp-5);
  top: 50%;
  transform: translateY(-50%) translateY(-14px);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--ink-muted);
  white-space: nowrap;
}

/* Form Container */
.form-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-10) var(--sp-12);
  max-width: 640px;
  width: 100%;
  margin: 0 auto;
}

/* ── 7. FORM STEPS ─────────────────────────────────────────── */
.form-step {
  display: none;
  opacity: 0;
  transform: translateX(32px);
  animation: stepIn var(--dur-med) var(--ease) forwards;
}
.form-step.active { display: block; }
@keyframes stepIn {
  to { opacity: 1; transform: translateX(0); }
}

/* Step Header */
.step-tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-dark);
  background: var(--accent-glow);
  padding: 3px 10px;
  border-radius: var(--r-full);
  border: 1px solid rgba(200,169,110,.3);
  margin-bottom: var(--sp-4);
}
.step-title {
  font-family: var(--font-display);
  font-size: clamp(1.625rem, 3.5vw, 2.25rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  color: var(--ink);
  line-height: 1.15;
  margin-bottom: var(--sp-2);
}
.step-subtitle {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  margin-bottom: var(--sp-8);
  font-weight: 300;
}
.step-header { margin-bottom: var(--sp-8); }

/* ── 8. FIELDS ─────────────────────────────────────────────── */
.fields-grid { display: flex; flex-direction: column; gap: var(--sp-5); }
.fields-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
}
.field-group { display: flex; flex-direction: column; gap: var(--sp-2); }
.field-label {
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink);
}
.required-mark { color: var(--accent-dark); margin-left: 2px; }
.field-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.field-icon {
  position: absolute;
  left: var(--sp-4);
  color: var(--ink-faint);
  pointer-events: none;
  display: flex;
  align-items: center;
  z-index: 1;
  transition: color var(--dur-fast);
}
.field-input {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  font-size: 0.9375rem;
  font-weight: 400;
  color: var(--ink);
  transition:
    border-color var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease),
    background var(--dur-fast);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}
.field-wrap .field-icon + .field-input { padding-left: calc(var(--sp-4) + 22px); }
.field-input::placeholder { color: var(--ink-faint); }
.field-input:hover { border-color: var(--border-focus); }
.field-input:focus {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-focus);
  background: #fff;
}
.field-wrap:focus-within .field-icon { color: var(--accent-dark); }
.field-status-icon {
  position: absolute;
  right: var(--sp-4);
  font-size: 0.875rem;
  pointer-events: none;
}

/* Error / Success states */
.field-group.has-error .field-input {
  border-color: var(--error);
  background: var(--error-bg);
}
.field-group.has-error .field-input:focus {
  box-shadow: 0 0 0 3px rgba(184,59,59,.12), 0 0 0 1px var(--error);
}
.field-group.has-success .field-input {
  border-color: var(--success);
  background: var(--success-bg);
}
.field-error {
  font-size: 0.8125rem;
  color: var(--error);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  min-height: 1rem;
  animation: fadeSlideIn var(--dur-fast) var(--ease);
}
.field-error:empty { display: none; }
.field-success {
  font-size: 0.8125rem;
  color: var(--success);
  min-height: 1rem;
}
.field-success:empty { display: none; }

/* Select */
.field-wrap--select { position: relative; }
.field-input--select { padding-right: calc(var(--sp-4) + 20px); cursor: pointer; }
.select-chevron {
  position: absolute;
  right: var(--sp-4);
  pointer-events: none;
  color: var(--ink-faint);
}

/* Password toggle */
.field-toggle-pw {
  position: absolute;
  right: var(--sp-4);
  color: var(--ink-faint);
  padding: var(--sp-1);
  border-radius: var(--r-sm);
  transition: color var(--dur-fast);
  z-index: 2;
  display: flex;
  align-items: center;
}
.field-toggle-pw:hover { color: var(--ink); }
.field-toggle-pw:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 2px; }

/* ── 9. PASSWORD STRENGTH ──────────────────────────────────── */
.pw-strength {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}
.pw-strength__bars { display: flex; gap: 4px; }
.pw-bar {
  width: 28px;
  height: 4px;
  border-radius: var(--r-full);
  background: var(--surface-3);
  transition: background var(--dur-med) var(--ease);
}
.pw-bar.active-weak   { background: var(--error); }
.pw-bar.active-fair   { background: var(--warning); }
.pw-bar.active-good   { background: #7cb87c; }
.pw-bar.active-strong { background: var(--success); }
.pw-strength__label { font-size: 0.75rem; font-weight: 500; color: var(--ink-muted); min-width: 50px; }
.pw-rules { display: flex; flex-direction: column; gap: var(--sp-1); }
.pw-rule {
  font-size: 0.8125rem;
  color: var(--ink-faint);
  transition: color var(--dur-fast);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.pw-rule span { font-size: 0.625rem; }
.pw-rule.rule-pass { color: var(--success); }
.pw-rule.rule-pass span::before { content: '●'; }

/* ── 10. PHONE INPUT ───────────────────────────────────────── */
.field-wrap--phone { position: relative; align-items: stretch; }
.phone-country {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: 0 var(--sp-3);
  background: var(--surface-2);
  border: 1.5px solid var(--border);
  border-right: none;
  border-radius: var(--r-md) 0 0 var(--r-md);
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--dur-fast), border-color var(--dur-fast);
  min-width: 80px;
  user-select: none;
  position: relative;
  z-index: 3;
}
.phone-country:hover { background: var(--surface-3); }
.phone-country:focus { outline: 2px solid var(--border-focus); outline-offset: -2px; }
.phone-flag { font-size: 1.1rem; }
.phone-code { font-size: 0.875rem; font-weight: 500; color: var(--ink); }
.phone-chevron { color: var(--ink-faint); flex-shrink: 0; transition: transform var(--dur-fast); }
.phone-country[aria-expanded="true"] .phone-chevron { transform: rotate(180deg); }
.phone-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  width: 260px;
  background: #fff;
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  box-shadow: var(--shadow-lg);
  z-index: 100;
  overflow: hidden;
  animation: dropIn var(--dur-med) var(--ease);
}
@keyframes dropIn {
  from { opacity: 0; transform: translateY(-8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.phone-dropdown__search-wrap {
  padding: var(--sp-3);
  border-bottom: 1px solid var(--border);
}
.phone-dropdown__search {
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  font-size: 0.875rem;
  outline: none;
}
.phone-dropdown__search:focus { border-color: var(--border-focus); }
.phone-dropdown__list { max-height: 200px; overflow-y: auto; scrollbar-width: thin; }
.phone-dropdown__list li {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-4);
  cursor: pointer;
  font-size: 0.875rem;
  transition: background var(--dur-fast);
}
.phone-dropdown__list li:hover,
.phone-dropdown__list li.highlighted { background: var(--surface-2); }
.phone-dropdown__list li .flag { font-size: 1rem; }
.phone-dropdown__list li .country-name { flex: 1; }
.phone-dropdown__list li .country-code { color: var(--ink-muted); font-size: 0.8125rem; }
.field-input--phone {
  border-radius: 0 var(--r-md) var(--r-md) 0;
  padding-left: var(--sp-4);
}

/* ── 11. OTP INPUTS ────────────────────────────────────────── */
.otp-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
  padding: var(--sp-8) 0;
}
.otp-email-display { font-size: 0.9375rem; color: var(--ink-muted); text-align: center; }
.otp-email-display strong { color: var(--ink); }
.otp-inputs { display: flex; align-items: center; gap: var(--sp-3); }
.otp-divider { color: var(--ink-faint); font-size: 1.25rem; line-height: 1; margin: 0 var(--sp-1); }
.otp-input {
  width: 52px;
  height: 60px;
  text-align: center;
  font-size: 1.5rem;
  font-weight: 600;
  font-family: var(--font-body);
  font-variant-numeric: tabular-nums;
  border: 2px solid var(--border);
  border-radius: var(--r-md);
  background: #fff;
  transition:
    border-color var(--dur-fast) var(--ease),
    box-shadow var(--dur-fast) var(--ease),
    transform var(--dur-fast) var(--ease);
  outline: none;
  caret-color: var(--accent);
}
.otp-input:focus {
  border-color: var(--border-focus);
  box-shadow: var(--shadow-focus);
  transform: translateY(-2px);
}
.otp-input.filled { border-color: var(--success); background: var(--success-bg); }
.otp-input.error { border-color: var(--error); background: var(--error-bg); }
.otp-error { font-size: 0.875rem; color: var(--error); }
.otp-meta { display: flex; flex-direction: column; align-items: center; gap: var(--sp-2); }
.otp-hint { font-size: 0.8125rem; color: var(--ink-muted); }
.otp-hint strong { color: var(--ink); font-variant-numeric: tabular-nums; letter-spacing: 0.1em; }
.otp-resend {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent-dark);
  transition: opacity var(--dur-fast);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.otp-resend:disabled { opacity: 0.5; cursor: not-allowed; text-decoration: none; }
.otp-timer { font-weight: 400; font-size: 0.8125rem; }

/* ── 12. CHECKBOXES ────────────────────────────────────────── */
.checkbox-list { display: flex; flex-direction: column; gap: var(--sp-3); }
.checkbox-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  cursor: pointer;
  user-select: none;
}
.checkbox-input { position: absolute; opacity: 0; width: 0; height: 0; }
.checkbox-custom {
  width: 18px;
  height: 18px;
  min-width: 18px;
  border: 2px solid var(--border);
  border-radius: 4px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--dur-fast), background var(--dur-fast), transform var(--dur-fast) var(--ease);
  position: relative;
  margin-top: 2px;
}
.checkbox-input:checked + .checkbox-custom {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  transform: scale(1.05);
}
.checkbox-input:checked + .checkbox-custom::after {
  content: '';
  width: 9px;
  height: 5px;
  border-left: 2px solid #fff;
  border-bottom: 2px solid #fff;
  transform: rotate(-45deg) translate(0px, -1px);
  display: block;
}
.checkbox-input:focus-visible + .checkbox-custom { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.checkbox-label { font-size: 0.9375rem; color: var(--ink); line-height: 1.5; }
.inline-link { color: var(--accent-dark); text-decoration: underline; text-underline-offset: 2px; }

/* ── 13. TOGGLE GROUP ──────────────────────────────────────── */
.toggle-group { display: flex; gap: var(--sp-2); }
.toggle-option { position: relative; }
.toggle-input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle-btn {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border: 1.5px solid var(--border);
  border-radius: var(--r-md);
  background: #fff;
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--ink-muted);
  transition: border-color var(--dur-fast), background var(--dur-fast), color var(--dur-fast);
  user-select: none;
}
.toggle-input:checked + .toggle-btn {
  border-color: var(--accent-dark);
  background: var(--accent-glow);
  color: var(--accent-dark);
  font-weight: 500;
}
.toggle-input:focus-visible + .toggle-btn { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.fieldset-group { border: none; }
.fieldset-group > .field-label { margin-bottom: var(--sp-1); }

/* ── 14. REVIEW GRID ───────────────────────────────────────── */
.review-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-4);
  margin-bottom: var(--sp-8);
}
.review-card {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--r-lg);
  padding: var(--sp-5);
  transition: transform var(--dur-fast);
}
.review-card:hover { transform: translateY(-1px); }
.review-card__label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: var(--sp-2);
}
.review-card__value { font-size: 0.9375rem; font-weight: 500; color: var(--ink); word-break: break-all; }
.review-card--wide { grid-column: span 2; }

/* ── 15. BUTTONS ───────────────────────────────────────────── */
.step-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-top: var(--sp-10);
  padding-top: var(--sp-6);
  border-top: 1px solid var(--border);
}
.step-actions .btn--primary,
.step-actions .btn--submit { margin-left: auto; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--r-md);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: background var(--dur-fast) var(--ease), color var(--dur-fast), box-shadow var(--dur-fast), transform var(--dur-fast) var(--ease), opacity var(--dur-fast);
  position: relative;
  overflow: hidden;
}
.btn:focus-visible { outline: 2px solid var(--border-focus); outline-offset: 2px; }
.btn:active { transform: scale(0.97); }
.btn--primary { background: var(--ink); color: #fff; box-shadow: var(--shadow-sm); }
.btn--primary:hover { background: #2e2820; box-shadow: var(--shadow-md); transform: translateY(-1px); }
.btn--primary:disabled { background: var(--surface-3); color: var(--ink-faint); box-shadow: none; cursor: not-allowed; transform: none; }
.btn--ghost { background: transparent; color: var(--ink-muted); border: 1.5px solid var(--border); }
.btn--ghost:hover { background: var(--surface-2); color: var(--ink); border-color: var(--ink-faint); }
.btn--submit {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent));
  color: #fff;
  padding: var(--sp-3) var(--sp-8);
  font-size: 1rem;
  font-weight: 600;
  box-shadow: 0 4px 20px rgba(200,169,110,.4);
}
.btn--submit:hover { box-shadow: 0 6px 24px rgba(200,169,110,.55); transform: translateY(-2px); }
.btn--submit:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: none; }
.btn-spinner {
  display: none;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
.btn--submit.loading .btn-text { display: none; }
.btn--submit.loading .btn-spinner { display: block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── 16. SUCCESS STATE ─────────────────────────────────────── */
.form-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--sp-12) var(--sp-8);
  gap: var(--sp-5);
  animation: stepIn var(--dur-slow) var(--ease) forwards;
}
.success-icon { width: 72px; height: 72px; color: var(--success); }
.success-icon svg { width: 100%; height: 100%; }
.success-check {
  stroke-dasharray: 40;
  stroke-dashoffset: 40;
  animation: drawCheck 0.5s var(--ease) 0.3s forwards;
}
@keyframes drawCheck { to { stroke-dashoffset: 0; } }
.success-title { font-family: var(--font-display); font-size: 2rem; font-weight: 400; color: var(--ink); }
.success-msg { font-size: 0.9375rem; color: var(--ink-muted); max-width: 340px; }

/* ── 17. UTILITIES ─────────────────────────────────────────── */
@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; }

/* ── 18. RESPONSIVE ────────────────────────────────────────── */
@media (max-width: 900px) {
  :root { --sidebar-w: 220px; }
  .form-container { padding: var(--sp-8) var(--sp-8); }
}
@media (max-width: 700px) {
  .app-wrapper { grid-template-columns: 1fr; grid-template-rows: auto 1fr; }
  .sidebar {
    position: static;
    height: auto;
    padding: var(--sp-4) var(--sp-5);
    flex-direction: row;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--sp-3);
  }
  .sidebar__brand { margin-bottom: 0; }
  .step-nav { flex: 1; }
  .step-nav__list { flex-direction: row; flex-wrap: wrap; gap: var(--sp-2); }
  .step-nav__item::after { display: none; }
  .step-nav__label { display: none; }
  .step-nav__btn { padding: var(--sp-2) var(--sp-3); font-size: 0.8125rem; }
  .sidebar__hint { display: none; }
  .form-container { padding: var(--sp-6) var(--sp-5); }
  .fields-row { grid-template-columns: 1fr; }
  .review-grid { grid-template-columns: 1fr; }
  .review-card--wide { grid-column: span 1; }
  .otp-inputs { gap: var(--sp-2); }
  .otp-input { width: 42px; height: 52px; font-size: 1.25rem; }
  .toggle-group { flex-wrap: wrap; }
  .step-title { font-size: 1.625rem; }
}
@media (max-width: 400px) {
  .otp-input { width: 36px; height: 46px; font-size: 1.1rem; }
  .otp-inputs { gap: var(--sp-1); }
}

/* ── 19. SCROLLBAR ─────────────────────────────────────────── */
.form-container::-webkit-scrollbar { width: 6px; }
.form-container::-webkit-scrollbar-track { background: transparent; }
.form-container::-webkit-scrollbar-thumb { background: var(--border); border-radius: var(--r-full); }
.phone-dropdown__list::-webkit-scrollbar { width: 4px; }
.phone-dropdown__list::-webkit-scrollbar-thumb { background: var(--border); border-radius: var(--r-full); }