/* ============================================
   Commuter Survey — RTL Modern UI
   ============================================ */

/* ---------- CSS Custom Properties ---------- */
:root {
  --clr-bg:          #0d1117;
  --clr-surface:     #161b22;
  --clr-surface2:    #1c2330;
  --clr-border:      rgba(255,255,255,0.08);
  --clr-border-hi:   rgba(255,255,255,0.18);

  --clr-accent:      #3b82f6;
  --clr-accent-glow: rgba(59,130,246,0.35);
  --clr-accent2:     #22d3ee;
  --clr-success:     #10b981;
  --clr-danger:      #ef4444;
  --clr-warning:     #f59e0b;

  --clr-text:        #e6edf3;
  --clr-text-muted:  #8b949e;
  --clr-text-dim:    #484f58;

  --radius-sm:   8px;
  --radius:      14px;
  --radius-lg:   22px;
  --radius-xl:   32px;

  --shadow-card:   0 8px 48px rgba(0,0,0,0.55), 0 2px 12px rgba(0,0,0,0.35);
  --shadow-accent: 0 0 28px var(--clr-accent-glow);

  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'Cairo', system-ui, sans-serif;
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  min-height: 100vh;
  direction: rtl;
  overflow-x: hidden;
  line-height: 1.7;
}

/* ---------- Background Effects ---------- */
.bg-mesh {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 20% 20%, rgba(59,130,246,0.12) 0%, transparent 60%),
    radial-gradient(ellipse 50% 60% at 80% 80%, rgba(34,211,238,0.08) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 60% 30%, rgba(16,185,129,0.06) 0%, transparent 50%);
}

.bg-grid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black, transparent);
}

/* ---------- Layout ---------- */
.page-wrapper {
  position: relative; z-index: 1;
  max-width: 680px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

/* ---------- Header ---------- */
.site-header {
  text-align: center;
  padding: 32px 0 20px;
}

.logo-mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: linear-gradient(135deg, var(--clr-surface2), var(--clr-surface));
  border: 1px solid var(--clr-border-hi);
  border-radius: 50px;
  padding: 10px 22px;
  margin-bottom: 12px;
}

.logo-icon { font-size: 1.5rem; }

.logo-text {
  font-size: 1.15rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.header-sub {
  color: var(--clr-text-muted);
  font-size: 0.95rem;
  font-weight: 400;
}

/* ---------- Progress ---------- */
.progress-container {
  margin: 20px 0 10px;
  text-align: center;
}

.progress-track {
  height: 6px;
  background: var(--clr-surface2);
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--clr-border);
  margin-bottom: 14px;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--clr-accent), var(--clr-accent2));
  border-radius: 10px;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 0 12px var(--clr-accent-glow);
  width: 0%;
}

.progress-steps {
  display: flex;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.progress-dot {
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  transition: var(--transition);
}

.progress-dot.done {
  background: var(--clr-success);
  border-color: var(--clr-success);
}

.progress-dot.active {
  background: var(--clr-accent);
  border-color: var(--clr-accent);
  box-shadow: 0 0 8px var(--clr-accent-glow);
  transform: scale(1.3);
}

.progress-label {
  color: var(--clr-text-muted);
  font-size: 0.85rem;
}

/* ---------- Card Shell ---------- */
.card-shell {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 36px 32px;
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
  margin-top: 8px;
}

.card-shell::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(59,130,246,0.04) 0%, transparent 60%);
  pointer-events: none;
  border-radius: inherit;
}

/* ---------- Steps ---------- */
.step {
  display: none;
  animation: fadeSlideIn 0.35s cubic-bezier(0.4, 0, 0.2, 1) both;
}

.step.active { display: block; }

@keyframes fadeSlideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to   { opacity: 1; transform: translateX(0); }
}

.step-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 20px;
}

.step-icon { font-size: 2rem; line-height: 1; }

.step-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.35;
}

.step-desc {
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
  padding-right: 8px;
  border-right: 3px solid var(--clr-accent);
}

/* ---------- Field Groups ---------- */
.field-group {
  margin-bottom: 24px;
}

.field-label {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: var(--clr-text);
  margin-bottom: 12px;
  line-height: 1.5;
}

.text-input {
  width: 100%;
  padding: 13px 16px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius);
  color: var(--clr-text);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
  outline: none;
  direction: rtl;
}

.text-input::placeholder { color: var(--clr-text-dim); }

.text-input:hover { border-color: var(--clr-border-hi); }

.text-input:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px var(--clr-accent-glow);
  background: rgba(59,130,246,0.05);
}

.text-input.error { border-color: var(--clr-danger); }

/* ---------- Radio Cards ---------- */
.radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.radio-group.inline {
  flex-direction: row;
  flex-wrap: wrap;
}

.radio-group.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.radio-card {
  cursor: pointer;
  display: block;
}

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

.radio-body {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 18px;
  background: var(--clr-surface2);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius);
  transition: var(--transition);
  user-select: none;
}

.radio-card:hover .radio-body {
  border-color: var(--clr-accent);
  background: rgba(59,130,246,0.06);
  transform: translateY(-1px);
}

.radio-card input:checked + .radio-body {
  border-color: var(--clr-accent);
  background: rgba(59,130,246,0.12);
  box-shadow: 0 0 0 3px var(--clr-accent-glow), inset 0 1px 0 rgba(255,255,255,0.05);
}

.radio-card.small .radio-body {
  padding: 10px 16px;
}

.radio-icon { font-size: 1.3rem; flex-shrink: 0; }

.radio-label {
  font-size: 0.97rem;
  font-weight: 600;
  color: var(--clr-text);
}

/* ---------- Conditional Blocks ---------- */
.conditional-block {
  margin-top: 16px;
  padding: 20px;
  background: rgba(59,130,246,0.04);
  border: 1px dashed rgba(59,130,246,0.3);
  border-radius: var(--radius);
  animation: fadeSlideIn 0.3s ease both;
}

/* ---------- Error Messages ---------- */
.field-error {
  color: var(--clr-danger);
  font-size: 0.85rem;
  margin-top: 6px;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 4px;
}

.field-error::before { content: '⚠ '; }

/* ---------- Nav Buttons ---------- */
.form-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--clr-border);
  gap: 12px;
}

.btn {
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 700;
  padding: 13px 28px;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  outline: none;
}

.btn-ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border: 1.5px solid var(--clr-border);
}

.btn-ghost:hover {
  background: var(--clr-surface2);
  color: var(--clr-text);
  border-color: var(--clr-border-hi);
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-accent), #2563eb);
  color: #fff;
  box-shadow: 0 4px 20px var(--clr-accent-glow);
  margin-right: auto;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px var(--clr-accent-glow);
}

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

.btn-submit {
  background: linear-gradient(135deg, var(--clr-success), #059669);
  color: #fff;
  box-shadow: 0 4px 20px rgba(16,185,129,0.35);
  margin-right: auto;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 28px rgba(16,185,129,0.45);
}

/* ---------- No-commute Message ---------- */
.no-commute-msg {
  text-align: center;
}

.thank-you-inner { padding: 20px 0; }

.ty-icon {
  font-size: 4rem;
  margin-bottom: 16px;
  display: block;
}

.thank-you-inner h2 {
  font-size: 1.8rem;
  font-weight: 900;
  margin-bottom: 10px;
  background: linear-gradient(135deg, var(--clr-accent), var(--clr-accent2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.thank-you-inner p {
  color: var(--clr-text-muted);
  margin-bottom: 28px;
  font-size: 1.05rem;
}

/* ---------- Utilities ---------- */
.hidden { display: none !important; }

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .card-shell { padding: 24px 18px; }
  .step-title { font-size: 1.1rem; }
  .radio-group.grid-2 { grid-template-columns: 1fr; }
  .radio-group.inline { flex-direction: column; }
  .form-nav { flex-wrap: wrap; }
  .btn { padding: 12px 20px; font-size: 0.95rem; }
  .btn-primary, .btn-submit { width: 100%; justify-content: center; }
}

/* ---------- Number input arrow hide ---------- */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button { -webkit-appearance: none; margin: 0; }
input[type="number"] { -moz-appearance: textfield; }

/* ---------- Scrollbar ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-surface2); border-radius: 3px; }