/* ================================================================
   Ascend Taxes — Premium Enhancement Layer  v1.0
   Loaded AFTER site.css. Enhances without breaking anything.
   Phases 2-9: Design system, accessibility, interactions, mobile
   ================================================================ */

/* ─── GLOBAL TOKENS ─── */
:root {
  --transition-fast: 160ms cubic-bezier(.4,0,.2,1);
  --transition-base: 220ms cubic-bezier(.4,0,.2,1);
  --transition-bounce: 350ms cubic-bezier(.34,1.56,.64,1);
  --shadow-focus: 0 0 0 3px rgba(28,95,214,.22), 0 0 0 1px rgba(28,95,214,.5);
  --shadow-card-hover: 0 20px 60px rgba(11,31,58,.13), 0 4px 16px rgba(11,31,58,.06);
  --shadow-btn: 0 4px 14px rgba(28,95,214,.32);
  --shadow-btn-hover: 0 8px 24px rgba(28,95,214,.44);
  --color-success: #10B981;
  --color-success-bg: #D1FAE5;
  --color-success-text: #065F46;
  --color-warning: #F59E0B;
  --color-warning-bg: #FEF3C7;
  --color-warning-text: #92400E;
  --color-error: #EF4444;
  --color-error-bg: #FEE2E2;
  --color-error-text: #991B1B;
  --gradient-brand: linear-gradient(135deg, #1C5FD6 0%, #0B3D8A 100%);
  --gradient-brand-soft: linear-gradient(135deg, rgba(28,95,214,.08) 0%, rgba(11,61,138,.04) 100%);
}

/* ─── SMOOTH SCROLL + FONT RENDERING ─── */
html { scroll-behavior: smooth; }
body {
  font-size: 17px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* ─── FOCUS STATES (WCAG 2.1 AA) ─── */
*:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus) !important;
  border-radius: 6px;
}

a:focus-visible, button:focus-visible {
  border-radius: 8px;
}

/* ─── SKIP LINK ─── */
.skip-link {
  position: absolute;
  top: -100px;
  left: 16px;
  background: var(--primary);
  color: white;
  padding: 12px 20px;
  border-radius: 0 0 12px 12px;
  font-weight: 600;
  font-size: 15px;
  z-index: 9999;
  transition: top var(--transition-base);
  text-decoration: none;
}
.skip-link:focus { top: 0; }

/* ─── TYPOGRAPHY REFINEMENTS ─── */
h1, h2, h3 { letter-spacing: -.025em; line-height: 1.15; }
h4, h5 { letter-spacing: -.01em; }
p { max-width: 68ch; }
p.wide, .lead { max-width: 82ch; }

/* Ensure readable paragraph size throughout */
.section p, .card p, main p { font-size: 1rem; line-height: 1.75; }

/* ─── BUTTONS — WCAG touch target + premium feel ─── */
.btn {
  min-height: 48px;
  min-width: 48px;
  padding: 12px 26px;
  font-size: 15.5px;
  font-weight: 600;
  border-radius: 12px;
  letter-spacing: .015em;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: transform var(--transition-base), box-shadow var(--transition-base), background var(--transition-base), opacity var(--transition-base);
  position: relative;
  overflow: hidden;
}

/* Ripple layer */
.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,0);
  transition: background var(--transition-fast);
  border-radius: inherit;
}
.btn:hover::before { background: rgba(255,255,255,.07); }
.btn:active::before { background: rgba(0,0,0,.06); }

.btn-primary {
  background: var(--gradient-brand);
  box-shadow: var(--shadow-btn);
}
.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-btn-hover);
}
.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: 0 2px 8px rgba(28,95,214,.25);
}

.btn-sm {
  min-height: 42px;
  padding: 9px 18px;
  font-size: 14px;
  border-radius: 10px;
}

.btn:disabled, .btn[disabled] {
  opacity: .55;
  cursor: not-allowed;
  transform: none !important;
}

/* ─── LOADING SPINNER ON BUTTONS ─── */
.btn.loading {
  color: transparent !important;
  pointer-events: none;
}
.btn.loading::after {
  content: '';
  position: absolute;
  width: 20px; height: 20px;
  border: 2.5px solid rgba(255,255,255,.35);
  border-top-color: white;
  border-radius: 50%;
  animation: at-spin 650ms linear infinite;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
@keyframes at-spin { to { transform: translate(-50%,-50%) rotate(360deg); } }

/* ─── FORM FIELDS — larger, clearer, accessible ─── */
.field { position: relative; margin-bottom: 18px; }

.field label {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: .01em;
  color: var(--ink);
  margin-bottom: 7px;
  display: block;
}

.field input,
.field textarea,
.field select {
  min-height: 52px;
  padding: 13px 16px;
  font-size: 16px; /* prevents iOS auto-zoom */
  line-height: 1.5;
  border-radius: 12px;
  border: 1.5px solid #C8D8F0;
  width: 100%;
  color: var(--ink);
  background: #fff;
  transition: border-color var(--transition-base), box-shadow var(--transition-base);
  -webkit-appearance: none;
  appearance: none;
}

.field textarea { min-height: 120px; resize: vertical; }

.field input:focus,
.field textarea:focus,
.field select:focus {
  border-color: var(--primary);
  box-shadow: var(--shadow-focus);
  outline: none;
}

.field input::placeholder,
.field textarea::placeholder {
  color: #8FA5C2;
}

/* Helper text (append after inputs for older-user guidance) */
.field-help {
  font-size: 13px;
  color: #647D9E;
  line-height: 1.45;
  margin-top: 6px;
  display: flex;
  align-items: flex-start;
  gap: 5px;
}

/* Inline validation */
.field.valid input,
.field.valid textarea { border-color: var(--color-success); }
.field.invalid input,
.field.invalid textarea { border-color: var(--color-error); }

.field-msg {
  font-size: 13px;
  font-weight: 500;
  margin-top: 5px;
  display: flex;
  align-items: center;
  gap: 5px;
}
.field-msg.success { color: var(--color-success); }
.field-msg.error   { color: var(--color-error); }

/* form-note improvements */
.form-note {
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 14px;
  font-weight: 500;
  margin-top: 12px;
  transition: all var(--transition-base);
}
.form-note:empty { display: none; }
.form-note.ok   { background: var(--color-success-bg); color: var(--color-success-text); }
.form-note.err  { background: var(--color-error-bg);   color: var(--color-error-text); }

/* ─── CARDS — hover lift ─── */
.card {
  border-radius: 20px;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
  will-change: transform;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card-hover);
}

/* ─── NAV ─── */
.nav {
  backdrop-filter: blur(16px) saturate(1.8);
  -webkit-backdrop-filter: blur(16px) saturate(1.8);
}
.nav-links a {
  transition: color var(--transition-fast);
  font-weight: 500;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 2px;
  background: var(--primary);
  border-radius: 1px;
  transform: scaleX(0);
  transition: transform var(--transition-base);
  transform-origin: center;
}
.nav-links a:hover::after,
.nav-links a.active::after { transform: scaleX(1); }

/* ─── CHAT LAUNCHER + WIDGET ─── */
#chatLauncher {
  transition: transform var(--transition-bounce), box-shadow var(--transition-base);
  box-shadow: 0 6px 24px rgba(28,95,214,.42);
}
#chatLauncher:hover {
  transform: scale(1.1) translateY(-2px);
  box-shadow: 0 10px 36px rgba(28,95,214,.52);
}
#chatLauncher:active { transform: scale(.96); }

#chatWidget {
  border-radius: 22px;
  box-shadow: 0 28px 72px rgba(11,31,58,.18), 0 8px 24px rgba(11,31,58,.08);
  transition: transform 320ms cubic-bezier(.34,1.56,.64,1), opacity 200ms ease;
}

/* Quick reply chips */
.cw-quick button {
  min-height: 38px;
  border-radius: 20px;
  font-size: 13.5px;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.cw-quick button:hover {
  transform: translateY(-1px);
}

/* ─── PROGRESS BAR ─── */
.progress-bar {
  height: 6px;
  background: #DDE9F9;
  border-radius: 6px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  border-radius: 6px;
  background: var(--gradient-brand);
  transition: width 900ms cubic-bezier(.4,0,.2,1);
  position: relative;
}
.progress-bar-fill::after {
  content: '';
  position: absolute;
  top: 0; right: 0; bottom: 0;
  width: 60px;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,.4));
  animation: at-shimmer 2s ease-in-out infinite;
}
@keyframes at-shimmer { 0%,100% { opacity:0 } 50% { opacity:1 } }

/* ─── STATUS BADGES ─── */
.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: .01em;
}
.status-badge.complete     { background: var(--color-success-bg); color: var(--color-success-text); }
.status-badge.in-progress  { background: #DBEAFE; color: #1E40AF; }
.status-badge.needs-doc    { background: var(--color-warning-bg); color: var(--color-warning-text); }
.status-badge.pending      { background: #F1F5F9; color: #475569; }

/* Pulse dot for live / active status */
.pulse-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  display: inline-block;
  animation: at-pulse 2s ease-in-out infinite;
}
@keyframes at-pulse {
  0%,100% { box-shadow: 0 0 0 0 rgba(16,185,129,.5); }
  50% { box-shadow: 0 0 0 6px rgba(16,185,129,0); }
}

/* ─── SCROLL REVEAL ─── */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 550ms ease, transform 550ms ease;
}
.reveal.in { opacity: 1; transform: none; }

/* Stagger children */
.stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 480ms ease, transform 480ms ease;
}
.stagger.in > *:nth-child(1) { opacity:1; transform:none; transition-delay:  0ms; }
.stagger.in > *:nth-child(2) { opacity:1; transform:none; transition-delay: 70ms; }
.stagger.in > *:nth-child(3) { opacity:1; transform:none; transition-delay:140ms; }
.stagger.in > *:nth-child(4) { opacity:1; transform:none; transition-delay:210ms; }
.stagger.in > *:nth-child(5) { opacity:1; transform:none; transition-delay:280ms; }
.stagger.in > *:nth-child(6) { opacity:1; transform:none; transition-delay:350ms; }
.stagger.in > *:nth-child(7) { opacity:1; transform:none; transition-delay:420ms; }
.stagger.in > *:nth-child(8) { opacity:1; transform:none; transition-delay:490ms; }

/* ─── SKELETON LOADING ─── */
.skeleton {
  background: linear-gradient(90deg, #EEF3FC 25%, #DDE7F5 50%, #EEF3FC 75%);
  background-size: 300% 100%;
  animation: at-skeleton 1.6s ease-in-out infinite;
  border-radius: 8px;
  color: transparent !important;
}
@keyframes at-skeleton {
  0%   { background-position: 100% 0; }
  100% { background-position: -100% 0; }
}

/* ─── TOOLTIPS ─── */
[data-tip] {
  position: relative;
  cursor: help;
}
[data-tip]::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--ink);
  color: white;
  font-size: 13px;
  padding: 7px 13px;
  border-radius: 9px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
  transform: translateX(-50%) translateY(4px);
  z-index: 200;
  box-shadow: 0 4px 16px rgba(11,31,58,.25);
}
[data-tip]:hover::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── SUCCESS ANIMATION ─── */
@keyframes at-pop {
  0%   { opacity:0; transform:scale(.5); }
  70%  { transform:scale(1.1); }
  100% { opacity:1; transform:scale(1); }
}
.animate-pop { animation: at-pop 400ms var(--transition-bounce) both; }

@keyframes at-fadein {
  from { opacity:0; transform:translateY(8px); }
  to   { opacity:1; transform:none; }
}
.animate-fadein { animation: at-fadein 350ms ease both; }

/* ─── LINK STYLES ─── */
a:not(.btn):not(.brand):not(.nav-login):not(.nav-links a) {
  text-decoration-thickness: 1.5px;
  text-underline-offset: 3px;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
}

/* ─── SECTION + HERO SPACING ─── */
.section { padding: 88px 0; }
.page-hero { padding: 76px 0 64px; }

/* ─── BADGE ROW (trust badges) ─── */
.badge-row { gap: 8px; flex-wrap: wrap; }
.badge {
  font-size: 12px;
  font-weight: 600;
  border-radius: 100px;
  padding: 5px 13px;
  letter-spacing: .01em;
  transition: transform var(--transition-fast);
}
.badge:hover { transform: translateY(-1px); }

/* ─── UPLOAD NOTE ─── */
.upload-note {
  border-left: 3px solid var(--primary);
  padding: 14px 16px;
  background: var(--gradient-brand-soft);
  border-radius: 0 12px 12px 0;
  transition: background var(--transition-base);
}

/* ─── FOOTER ─── */
footer .foot-col a {
  transition: color var(--transition-fast);
  display: block;
  padding: 3px 0;
}

/* ─── PORTAL-SPECIFIC: Welcome Banner ─── */
.portal-welcome {
  background: var(--gradient-brand);
  border-radius: 20px;
  padding: 28px 32px;
  color: white;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}
.portal-welcome::before {
  content: '';
  position: absolute;
  top: -60px; right: -60px;
  width: 200px; height: 200px;
  background: rgba(255,255,255,.06);
  border-radius: 50%;
  pointer-events: none;
}
.portal-welcome::after {
  content: '';
  position: absolute;
  bottom: -40px; right: 60px;
  width: 140px; height: 140px;
  background: rgba(255,255,255,.04);
  border-radius: 50%;
  pointer-events: none;
}
.portal-welcome h2 { color: white; margin: 0 0 6px; font-size: 22px; }
.portal-welcome p  { color: rgba(255,255,255,.8); margin: 0; font-size: 15px; }

/* Sidebar-context welcome card — compact padding */
#side .portal-welcome {
  padding: 18px 20px;
  border-radius: 14px;
  margin-bottom: 4px;
  margin-top: 8px;
}
#side .portal-welcome h2 { font-size: 16px; }
#side .portal-welcome p  { font-size: 12.5px; }

/* Portal status tracker — enhanced step dots */
#statusCard [style*="border-radius:50%"] {
  transition: transform 200ms ease;
}
#statusCard .sect-label { margin-top: 14px; }

/* Upload button — bigger touch target */
.upload-btn {
  transition: background var(--transition-fast), transform var(--transition-fast) !important;
}
.upload-btn:hover { transform: translateY(-1px) !important; }

/* ─── PORTAL-SPECIFIC: Action Required Alert ─── */
.action-alert {
  background: var(--color-warning-bg);
  border: 1.5px solid #F59E0B;
  border-radius: 14px;
  padding: 16px 20px;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
  animation: at-fadein 300ms ease both;
}
.action-alert-icon {
  width: 36px; height: 36px; min-width: 36px;
  background: var(--color-warning);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  color: white; font-size: 16px; font-weight: 700;
}
.action-alert h4 { color: var(--color-warning-text); margin: 0 0 4px; font-size: 14.5px; }
.action-alert p  { color: var(--color-warning-text); margin: 0; font-size: 13.5px; opacity:.85; }

/* ─── MOBILE — WCAG touch targets, readable sizes ─── */
@media (max-width: 768px) {
  body { font-size: 16.5px; }
  h1 { font-size: clamp(28px, 9vw, 52px); }
  h2 { font-size: clamp(22px, 6.5vw, 36px); }
  h3 { font-size: clamp(18px, 5vw, 26px); }

  .btn {
    min-height: 54px;
    font-size: 16px;
    border-radius: 14px;
  }
  .btn-sm { min-height: 46px; width: auto; }

  .field input,
  .field textarea,
  .field select {
    min-height: 54px;
    font-size: 16px;
    border-radius: 13px;
  }

  .section { padding: 60px 0; }
  .page-hero { padding: 56px 0 48px; }

  .card { border-radius: 16px; }
  .card:hover { transform: none; } /* disable lift on touch */
}

@media (max-width: 480px) {
  .section { padding: 48px 0; }
  .btn { padding: 14px 20px; }
}

/* ─── HIGH CONTRAST MODE ─── */
@media (prefers-contrast: high) {
  .btn-primary { background: #0B3D8A; box-shadow: none; }
  .field input, .field textarea, .field select {
    border-color: var(--ink);
    border-width: 2px;
  }
  .card { border: 1.5px solid #C5D5E8; }
}

/* ─── REDUCED MOTION ─── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 1ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
    scroll-behavior: auto !important;
  }
  .reveal, .stagger > * { opacity: 1 !important; transform: none !important; }
}

/* ─── TOOLS NAV DROPDOWN ─── */
.nav-item-dropdown {
  position: relative;
}

.nav-tools-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
}
.nav-tools-trigger::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  opacity: .55;
  transition: transform 200ms ease, opacity 200ms ease;
  margin-top: 1px;
}
.nav-item-dropdown:hover .nav-tools-trigger::after,
.nav-item-dropdown:focus-within .nav-tools-trigger::after {
  transform: rotate(180deg);
  opacity: 1;
}

.nav-dropdown {
  position: absolute;
  top: calc(100% + 14px);
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  width: 580px;
  background: #fff;
  border-radius: 22px;
  box-shadow: 0 24px 64px rgba(11,31,58,.16), 0 4px 16px rgba(11,31,58,.06);
  border: 1px solid rgba(11,31,58,.07);
  padding: 20px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 200ms ease, transform 200ms ease, visibility 200ms ease;
  z-index: 1000;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  pointer-events: none;
}

/* bridge gap so mouse doesn't lose hover moving from trigger to panel */
.nav-item-dropdown::before {
  content: '';
  position: absolute;
  top: 100%;
  left: 0; right: 0;
  height: 16px;
}

.nav-item-dropdown:hover .nav-dropdown,
.nav-item-dropdown:focus-within .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
  pointer-events: auto;
}

.nav-dropdown-header {
  grid-column: 1 / -1;
  padding: 4px 6px 12px;
  border-bottom: 1px solid #EEF3FA;
  margin-bottom: 4px;
}
.nav-dropdown-eyebrow {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--primary);
  display: block;
  margin-bottom: 3px;
}
.nav-dropdown-sub {
  font-size: 13px;
  color: var(--ink-muted);
  margin: 0;
}

.nav-dropdown-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px;
  border-radius: 14px;
  text-decoration: none !important;
  color: var(--ink) !important;
  transition: background 140ms ease, transform 140ms ease;
}
.nav-dropdown-item:hover {
  background: #F3F7FD;
  transform: translateY(-1px);
}

.nav-dropdown-icon {
  width: 38px; height: 38px; min-width: 38px;
  background: linear-gradient(135deg, #EDF4FF, #D9EAFF);
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 17px;
  flex-shrink: 0;
}

.nav-dropdown-text strong {
  display: block;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--ink);
  margin-bottom: 2px;
  line-height: 1.3;
}
.nav-dropdown-text span {
  font-size: 12px;
  color: var(--ink-muted);
  line-height: 1.4;
  display: block;
}

.nav-dropdown-footer {
  grid-column: 1 / -1;
  border-top: 1px solid #EEF3FA;
  margin-top: 6px;
  padding-top: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-left: 4px;
  padding-right: 4px;
}
.nav-dropdown-footer > span {
  font-size: 13px;
  color: var(--ink-muted);
}
.nav-dropdown-footer .btn,
.nav-dropdown-footer .btn:hover {
  color: #fff !important;
}

/* Keep dropdown inside viewport on smaller screens */
@media (max-width: 900px) {
  .nav-dropdown {
    left: auto;
    right: 0;
    transform: translateY(-8px);
    width: calc(100vw - 40px);
    max-width: 500px;
  }
  .nav-item-dropdown:hover .nav-dropdown,
  .nav-item-dropdown:focus-within .nav-dropdown {
    transform: translateY(0);
  }
}

/* ─── PRINT ─── */
@media print {
  .nav, footer, #chatLauncher, #chatWidget { display: none !important; }
  body { font-size: 12pt; color: #000; }
  a { color: #000; text-decoration: underline; }
}