/* ==========================================================================
   SIGNIFY — Email Signature Builder
   Design tokens
   Palette: violet-ink primary (#5B5BF6), warm coral accent (#FF6A3D) used
   sparingly, near-white "paper" background with a faint violet cast.
   Display/UI face: Manrope. Body/form face: Inter. Handwriting faces are
   loaded for the signature module only.
   ========================================================================== */

:root{
  /* --- Brand palette --- */
  --primary-h: 243 92% 65%;
  --primary: #5B5BF6;
  --primary-600: #4640D6;
  --primary-100: #ECEBFE;
  --accent: #FF6A3D;
  --accent-100: #FFE7DD;

  /* --- Surfaces (light) --- */
  --paper: #F6F5FB;
  --surface: #FFFFFF;
  --surface-alt: #FBFAFE;
  --line: #E6E3F1;
  --line-strong: #D6D2E8;
  --ink: #17162A;
  --ink-soft: #5B5870;
  --ink-faint: #8B87A0;

  /* --- Semantic --- */
  --success: #1FA971;
  --danger: #E5484D;
  --warning: #E6A419;

  /* --- Shape / motion --- */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --shadow-sm: 0 1px 2px rgba(23,22,42,.06);
  --shadow-md: 0 6px 20px -4px rgba(23,22,42,.12), 0 2px 6px -2px rgba(23,22,42,.08);
  --shadow-lg: 0 24px 48px -12px rgba(23,22,42,.22), 0 8px 16px -8px rgba(23,22,42,.12);
  --shadow-glow: 0 0 0 4px var(--primary-100);
  --ease: cubic-bezier(.4,0,.2,1);
  --dur-fast: 140ms;
  --dur-med: 240ms;
  --dur-slow: 420ms;

  /* --- Fonts --- */
  --font-display: 'Manrope', 'Inter', sans-serif;
  --font-body: 'Inter', 'Manrope', sans-serif;

  /* --- Layout widths --- */
  --nav-w: 88px;
  --nav-w-expanded: 220px;
  --topbar-h: 60px;
}

[data-theme-mode="dark"]{
  --paper: #0E0D18;
  --surface: #17162A;
  --surface-alt: #1D1B32;
  --line: #2B2941;
  --line-strong: #38355A;
  --ink: #F3F1FA;
  --ink-soft: #B9B6CC;
  --ink-faint: #837FA0;
  --primary-100: #232052;
  --accent-100: #3A2418;
  --shadow-sm: 0 1px 2px rgba(0,0,0,.4);
  --shadow-md: 0 6px 20px -4px rgba(0,0,0,.55), 0 2px 6px -2px rgba(0,0,0,.4);
  --shadow-lg: 0 24px 48px -12px rgba(0,0,0,.65), 0 8px 16px -8px rgba(0,0,0,.5);
}

/* ==========================================================================
   RESET
   ========================================================================== */
*,*::before,*::after{ box-sizing: border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: var(--font-body);
  background: var(--paper);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  transition: background var(--dur-med) var(--ease), color var(--dur-med) var(--ease);
}
h1,h2,h3,h4{ font-family: var(--font-display); margin:0; }
p{ margin:0; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family: inherit; }
input,select,textarea{ font-family: inherit; color: inherit; }
img{ max-width:100%; display:block; }
a{ color: var(--primary); }

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{ animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

.skip-link{
  position:absolute; left:-999px; top:auto;
  background: var(--primary); color:#fff; padding:.6em 1em; border-radius: var(--radius-sm); z-index:999;
}
.skip-link:focus{ left: 12px; top: 12px; }

:focus-visible{ outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 4px; }

/* ==========================================================================
   TOP BAR
   ========================================================================== */
.topbar{
  height: var(--topbar-h);
  display:flex; align-items:center; gap:14px;
  padding: 0 18px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line);
  position: sticky; top:0; z-index: 60;
}
.topbar-brand{ display:flex; align-items:center; gap:8px; font-family: var(--font-display); font-weight:800; font-size: 1.05rem; letter-spacing:-.02em; }
.brand-mark{
  width:32px; height:32px; border-radius: 10px;
  background: linear-gradient(135deg, var(--primary), #8B7CF6);
  color:#fff; display:flex; align-items:center; justify-content:center;
  box-shadow: var(--shadow-sm);
  font-size: .9rem;
}
.topbar-nav-toggle{ display:none; }
.topbar-actions{ margin-left:auto; display:flex; align-items:center; gap:8px; }

.icon-btn{
  width:36px; height:36px; border-radius: var(--radius-sm);
  display:inline-flex; align-items:center; justify-content:center;
  background: transparent; border: 1px solid transparent; color: var(--ink-soft);
  cursor:pointer; transition: all var(--dur-fast) var(--ease);
  position: relative;
}
.icon-btn:hover{ background: var(--primary-100); color: var(--primary-600); }
.icon-btn:disabled{ opacity:.35; cursor:not-allowed; }
.icon-btn.danger:hover{ background: #FCE7E7; color: var(--danger); }

.save-indicator{
  font-size:.78rem; color: var(--ink-faint); display:flex; align-items:center; gap:6px;
  padding: 0 6px; white-space:nowrap;
}
.save-indicator.saving i{ animation: pulse 1s infinite; }
.save-indicator.error{ color: var(--danger); }
@keyframes pulse{ 0%,100%{opacity:1;} 50%{opacity:.35;} }

/* Buttons */
.btn{
  display:inline-flex; align-items:center; gap:8px;
  padding: .6em 1.1em; border-radius: var(--radius-pill);
  border: 1px solid var(--line-strong);
  background: var(--surface); color: var(--ink);
  font-weight:600; font-size:.88rem; cursor:pointer;
  transition: transform var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease), background var(--dur-fast) var(--ease);
}
.btn:hover{ transform: translateY(-1px); box-shadow: var(--shadow-sm); }
.btn:active{ transform: translateY(0); }
.btn-primary{ background: linear-gradient(135deg, var(--primary), var(--primary-600)); color:#fff; border-color: transparent; box-shadow: var(--shadow-sm); }
.btn-primary:hover{ box-shadow: var(--shadow-md); }
.btn-accent{ background: var(--accent); border-color: transparent; color:#fff; }
.btn-ghost{ background: transparent; border-color: transparent; }
.btn-ghost:hover{ background: var(--primary-100); }
.btn-sm{ padding: .45em .9em; font-size: .8rem; }
.btn-block{ width:100%; justify-content:center; }
.btn[disabled]{ opacity:.5; cursor:not-allowed; transform:none; }

/* ==========================================================================
   APP SHELL — 20 / 30 / 50 grid on desktop
   ========================================================================== */
.app-shell{
  display:grid;
  grid-template-columns: 10% 35% 55%;
  min-height: calc(100vh - var(--topbar-h));
}

/* ---- Left nav ---- */
.side-nav{
  border-right: 1px solid var(--line);
  background: var(--surface-alt);
  display:flex; flex-direction:column; justify-content:space-between;
  padding: 14px 8px;
  position: sticky; top: var(--topbar-h); align-self:start;
  height: calc(100vh - var(--topbar-h));
  overflow-y:auto;
}
.nav-list{ display:flex; flex-direction:column; gap:4px; }
.nav-item-btn{
  width:100%; display:flex; flex-direction:column; align-items:center; gap:5px;
  padding: 12px 4px; border-radius: var(--radius-md);
  background: transparent; border: none; color: var(--ink-soft);
  cursor:pointer; transition: all var(--dur-fast) var(--ease);
  font-size:.68rem; font-weight:600; letter-spacing:.01em;
}
.nav-item-btn i{ font-size: 1.05rem; }
.nav-item-btn:hover{ background: var(--primary-100); color: var(--primary-600); }
.nav-item-btn.active{
  background: linear-gradient(135deg, var(--primary), var(--primary-600));
  color:#fff; box-shadow: var(--shadow-sm);
}
.nav-footer-btn{
  width:100%; display:flex; flex-direction:column; align-items:center; gap:4px;
  padding:10px 4px; border-radius: var(--radius-md); border:1px dashed var(--line-strong);
  background:transparent; color: var(--ink-faint); font-size:.65rem; font-weight:600; cursor:pointer;
}
.nav-footer-btn:hover{ color: var(--danger); border-color: var(--danger); }

/* ---- Center config panel ---- */
.config-panel{
  border-right: 1px solid var(--line);
  padding: 26px 26px 60px;
  overflow-y:auto;
  height: calc(100vh - var(--topbar-h));
}
.panel-head{ margin-bottom: 18px; }
.panel-head h1{ font-size: 1.35rem; letter-spacing:-.01em; }
.panel-subtitle{ color: var(--ink-faint); font-size:.85rem; margin-top:4px; }

/* ---- Right preview panel ---- */
.preview-panel{
  background:
    radial-gradient(1200px 600px at 90% -10%, color-mix(in srgb, var(--primary) 8%, transparent), transparent 60%),
    var(--paper);
  padding: 20px 30px 30px;
  display:flex; flex-direction:column; gap: 14px;
  height: calc(100vh - var(--topbar-h));
  overflow-y:auto;
}
.preview-toolbar{ display:flex; align-items:center; justify-content:space-between; gap:12px; }
.preview-toolbar-title{ font-weight:700; font-family: var(--font-display); display:flex; align-items:center; gap:8px; color:var(--ink-soft); font-size:.9rem;}
.preview-toolbar-actions{ display:flex; align-items:center; gap:8px; }
.preview-toolbar-actions select{
  border-radius: var(--radius-pill); border:1px solid var(--line-strong); background:var(--surface);
  padding:.4em .9em; font-size:.78rem; color:var(--ink);
}

.preview-stage{ flex:1; display:flex; align-items:center; justify-content:center; padding: 10px; }

/* The "signature card" — the design's signature element: a slightly tilted
   paper card with layered shadow, like a physical card resting on a desk. */
.preview-card{
  width:100%; max-width: 620px;
  background: var(--surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 28px 30px;
  border: 1px solid var(--line);
  transform: perspective(1200px) rotateX(0.4deg);
  transition: box-shadow var(--dur-med) var(--ease);
}
.preview-card.bg-dark{ background: #1B1930; color: #EFEDFB; }
.preview-card.bg-email{ background: #fff; box-shadow: var(--shadow-md); }

.email-chrome{ font-size:.86rem; color:#444; padding-bottom:14px; margin-bottom:14px; border-bottom:1px dashed var(--line-strong); font-family: var(--font-body); }
.preview-card.bg-dark .email-chrome{ color:#C9C6E6; border-color:#3a3760; }
.email-chrome-line{ margin-bottom:4px; }
.email-chrome-body{ margin-top:10px; line-height:1.6; }

.signature-render{ font-family: Arial, Helvetica, sans-serif; }

.preview-footnote{ font-size:.75rem; color: var(--ink-faint); text-align:center; display:flex; gap:6px; align-items:center; justify-content:center;  margin-top: 50px;}

/* ==========================================================================
   FORM CONTROLS
   ========================================================================== */
.card{
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  padding: 18px;
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
}
.card-title{
  font-size:.95rem; font-weight:700; margin-bottom: 12px; display:flex; align-items:center; gap:8px;
}
.card-title.with-action{ justify-content: space-between; }
.card-title i{ color: var(--primary); }
.field-grid{ display:grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.field-grid.single{ grid-template-columns: 1fr; }

.field-group{ display:flex; flex-direction:column; gap:6px; margin-bottom:14px; }
.field-label{ font-size:.78rem; font-weight:600; color: var(--ink-soft); display:flex; justify-content:space-between; align-items:center;}
.field-label .req{ color: var(--danger); }
.field-input-wrap{ position:relative; }
.field-input, .field-select, .field-textarea{
  width:100%; padding: .65em .85em; border-radius: var(--radius-sm);
  border: 1px solid var(--line-strong); background: var(--surface-alt); color: var(--ink);
  font-size: .88rem; transition: border var(--dur-fast) var(--ease), box-shadow var(--dur-fast) var(--ease);
}
.field-textarea{ resize:vertical; min-height:70px; }
.field-input:focus, .field-select:focus, .field-textarea:focus{
  outline:none; border-color: var(--primary); box-shadow: var(--shadow-glow);
}
.field-input.invalid{ border-color: var(--danger); }
.field-error{ font-size:.72rem; color: var(--danger); min-height: 1em; display:block; }

.field-hint{ font-size:.72rem; color: var(--ink-faint); }

.select-wrap{ position:relative; }
.select-wrap i{ position:absolute; right:12px; top:50%; transform:translateY(-50%); color:var(--ink-faint); pointer-events:none; font-size:.75rem;}

.range-row{ display:flex; align-items:center; gap:10px; }
.range-row input[type=range]{ flex:1; }
.range-row output{ font-size:.78rem; font-weight:600; color:var(--primary-600); width:42px; text-align:right;}

input[type=range]{
  -webkit-appearance:none; height:5px; border-radius:3px; background: var(--line-strong); outline:none;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none; width:16px; height:16px; border-radius:50%; background: var(--primary); cursor:pointer; box-shadow: var(--shadow-sm);
}
input[type=color]{ width:38px; height:32px; border-radius:8px; border:1px solid var(--line-strong); padding:2px; cursor:pointer; background:var(--surface);}

/* Toggle switch */
.switch{ display:inline-flex; cursor:pointer; }
.switch input{ display:none; }
.switch-track{
  width:38px; height:22px; border-radius: var(--radius-pill); background: var(--line-strong);
  position:relative; transition: background var(--dur-fast) var(--ease);
}
.switch-thumb{
  position:absolute; top:2px; left:2px; width:18px; height:18px; border-radius:50%;
  background:#fff; box-shadow: var(--shadow-sm); transition: transform var(--dur-fast) var(--ease);
}
.switch input:checked + .switch-track{ background: var(--primary); }
.switch input:checked + .switch-track .switch-thumb{ transform: translateX(16px); }

/* Segmented control */
.segmented{ display:flex; background: var(--surface-alt); border:1px solid var(--line-strong); border-radius: var(--radius-pill); padding:3px; gap:2px;}
.segmented button{
  flex:1; padding:.5em .6em; border-radius: var(--radius-pill); border:none; background:transparent;
  font-size:.78rem; font-weight:600; color: var(--ink-soft); cursor:pointer; transition: all var(--dur-fast) var(--ease);
}
.segmented button.active{ background: var(--surface); color: var(--primary-600); box-shadow: var(--shadow-sm); }

/* Category grid */
.category-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:10px; }
.category-card{
  border:1px solid var(--line-strong); border-radius: var(--radius-md); padding:14px 10px;
  display:flex; flex-direction:column; align-items:center; gap:8px; cursor:pointer; text-align:center;
  background: var(--surface-alt); transition: all var(--dur-fast) var(--ease); font-size:.78rem; font-weight:600; color:var(--ink-soft);
}
.category-card i{ font-size:1.1rem; color: var(--primary); }
.category-card:hover{ transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.category-card.active{ border-color: var(--primary); background: var(--primary-100); color: var(--primary-600); }

/* Custom field rows */
.custom-field-row, .social-row{
  display:flex; align-items:center; gap:8px; padding:8px; border-radius: var(--radius-sm);
  border:1px solid var(--line); margin-bottom:8px; background: var(--surface-alt);
  transition: box-shadow var(--dur-fast) var(--ease), opacity var(--dur-fast) var(--ease);
}
.custom-field-row.dragging, .social-row.dragging{ opacity:.4; }
.custom-field-row.drag-over, .social-row.drag-over{ box-shadow: 0 -2px 0 var(--primary) inset; }
.drag-handle{ background:none; border:none; color: var(--ink-faint); cursor:grab; padding:4px; }
.cf-name{ width:34%; border:1px solid var(--line-strong); border-radius:6px; padding:.5em; font-size:.82rem; background:var(--surface);}
.cf-value{ flex:1; border:1px solid var(--line-strong); border-radius:6px; padding:.5em; font-size:.82rem; background:var(--surface);}

.social-icon{ width:32px; height:32px; border-radius:8px; background: var(--primary-100); color: var(--primary-600); display:flex; align-items:center; justify-content:center; flex-shrink:0; }
.social-fields{ flex:1; min-width:0; }
.social-fields-top{ display:flex; justify-content:space-between; align-items:center; margin-bottom:6px; }
.social-platform-name{ font-size:.82rem; font-weight:600; }
.social-url{ width:100%; border:1px solid var(--line-strong); border-radius:6px; padding:.45em .6em; font-size:.8rem; background:var(--surface);}

.add-row-btn{
  width:100%; padding:.7em; border-radius: var(--radius-sm); border:1.5px dashed var(--line-strong);
  background:transparent; color: var(--primary-600); font-weight:600; font-size:.82rem; cursor:pointer;
  display:flex; align-items:center; justify-content:center; gap:8px; transition: all var(--dur-fast) var(--ease);
}
.add-row-btn:hover{ background: var(--primary-100); border-color: var(--primary); }

.social-picker{ display:grid; grid-template-columns: repeat(4,1fr); gap:8px; max-height:340px; overflow-y:auto; }
.social-picker-item{
  display:flex; flex-direction:column; align-items:center; gap:6px; padding:12px 4px; border-radius:10px;
  border:1px solid var(--line); cursor:pointer; font-size:.68rem; color:var(--ink-soft); background:var(--surface-alt);
}
.social-picker-item:hover{ border-color: var(--primary); color:var(--primary-600); }
.social-picker-item i{ font-size:1.2rem; }

/* Theme swatches */
.theme-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:12px; }
.theme-swatch{
  border-radius: var(--radius-md); padding:12px; cursor:pointer; border:2px solid transparent;
  background: var(--surface-alt); transition: all var(--dur-fast) var(--ease);
}
.theme-swatch:hover{ transform: translateY(-2px); }
.theme-swatch.active{ border-color: var(--primary); box-shadow: var(--shadow-md); }
.theme-swatch-colors{ display:flex; gap:4px; margin-bottom:8px; }
.theme-swatch-colors span{ flex:1; height:22px; border-radius:5px; }
.theme-swatch-name{ font-size:.74rem; font-weight:600; text-align:center; color: var(--ink-soft); }

.color-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:12px; margin-top:10px; }
.color-field{ display:flex; align-items:center; justify-content:space-between; border:1px solid var(--line); border-radius:8px; padding:8px 10px; }
.color-field span{ font-size:.78rem; font-weight:600; color: var(--ink-soft); }

/* Layout grid */
.layout-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:12px; }
.layout-card{
  border:2px solid var(--line); border-radius: var(--radius-md); padding:10px; cursor:pointer;
  background: var(--surface-alt); transition: all var(--dur-fast) var(--ease);
}
.layout-card:hover{ transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.layout-card.active{ border-color: var(--primary); background: var(--primary-100); }
.layout-card-preview{ height:52px; border-radius:6px; background: var(--surface); border:1px solid var(--line); margin-bottom:8px; display:flex; align-items:center; justify-content:center; gap:5px; padding:6px; }
.layout-card-name{ font-size:.74rem; font-weight:600; text-align:center; color: var(--ink-soft); }
.lp-box{ background: var(--line-strong); border-radius:3px; }

/* Layout builder (custom drag/drop) */
.builder-shell{ display:flex; gap:14px; }
.builder-palette{ width:120px; flex-shrink:0; display:flex; flex-direction:column; gap:8px; }
.builder-palette-item{
  border:1px dashed var(--line-strong); border-radius:8px; padding:8px 6px; text-align:center; font-size:.7rem;
  font-weight:600; color: var(--ink-soft); cursor:grab; background: var(--surface-alt);
}
.builder-canvas{
  flex:1; min-height:260px; border:2px dashed var(--line-strong); border-radius: var(--radius-md);
  padding:12px; display:flex; flex-direction:column; gap:8px; background: var(--surface-alt);
}
.builder-canvas.drag-over{ border-color: var(--primary); background: var(--primary-100); }
.builder-canvas{ flex-direction:column; }
.builder-row{
  display:flex; align-items:stretch; gap:6px; padding:6px;
  border:1px dashed var(--line-strong); border-radius: var(--radius-sm);
  background: var(--surface); position:relative; transition: all var(--dur-fast) var(--ease);
}
.builder-row.drag-over{ border-color: var(--primary); background: var(--primary-100); }
.builder-col{
  display:flex; align-items:center; gap:6px; background: var(--surface-alt);
  border:1px solid var(--line); border-radius:8px; padding:8px 10px; font-size:.78rem; font-weight:600;
  flex:1; min-width:100px; cursor:grab; transition: all var(--dur-fast) var(--ease);
}
.builder-col.dragging{ opacity:.4; }
.builder-col.drag-over{ box-shadow: 0 0 0 2px var(--primary) inset; background: var(--primary-100); }
.builder-col button{ margin-left:auto; background:none; border:none; color:var(--ink-faint); cursor:pointer; flex-shrink:0; }
.builder-col button:hover{ color: var(--danger); }
.builder-col-empty{
  flex:0 0 34px; justify-content:center; border-style:dashed; color: var(--ink-faint);
  cursor:default; background:transparent;
}
.builder-col-empty.drag-over{ background: var(--primary-100); border-color: var(--primary); color: var(--primary-600); flex:0 0 60px; }
.builder-row-remove{
  position:absolute; top:-9px; right:-9px; width:20px; height:20px; border-radius:50%;
  background: var(--surface); border:1px solid var(--line-strong); color: var(--ink-faint);
  font-size:.6rem; display:flex; align-items:center; justify-content:center; cursor:pointer;
}
.builder-row-remove:hover{ color: var(--danger); border-color: var(--danger); }
.builder-row-add-target{
  justify-content:center; align-items:center; color: var(--ink-faint);
  font-size:.78rem; font-weight:600; cursor:default; padding:12px; flex-wrap: wrap;
}
.builder-row-add-target.drag-over{ border-color: var(--primary); background: var(--primary-100); color: var(--primary-600); }

.builder-row{ flex-wrap: wrap; }
.builder-col{ min-width: 96px; }

/* Full-view modal for the custom layout builder — same markup, more room */
.modal-box.modal-fullview{
  max-width: 920px;
  width: 92vw;
  max-height: 88vh;
}
.modal-fullview .builder-shell{ gap: 20px; }
.modal-fullview .builder-palette{ width: 170px; gap: 10px; }
.modal-fullview .builder-palette-item{ padding: 12px 8px; font-size: .8rem; }
.modal-fullview .builder-canvas{ min-height: 420px; gap: 12px; padding: 18px; }
.modal-fullview .builder-row{ padding: 10px; gap: 10px; }
.modal-fullview .builder-col{ padding: 12px 14px; font-size: .88rem; min-width: 140px; }
.modal-fullview .builder-col-empty{ flex: 0 0 46px; }
.modal-fullview .builder-row-add-target{ padding: 18px; }

@media (max-width: 720px){
  .modal-box.modal-fullview{ width: 96vw; max-height: 92vh; }
  .modal-fullview .builder-shell{ flex-direction: column; }
  .modal-fullview .builder-palette{ width: 100%; flex-direction: row; overflow-x: auto; }
}

/* Photo editor */
.photo-editor{ display:flex; gap:18px; align-items:flex-start; flex-wrap:wrap; }
.photo-drop{
  width:150px; height:150px; border-radius:16px; border:2px dashed var(--line-strong);
  display:flex; flex-direction:column; align-items:center; justify-content:center; gap:8px;
  cursor:pointer; color: var(--ink-faint); font-size:.75rem; text-align:center; flex-shrink:0;
  background: var(--surface-alt); overflow:hidden; position:relative;
}
.photo-drop.has-image{ border-style:solid; }
.photo-drop img{ position:absolute; inset:0; width:100%; height:100%; object-fit:cover; }
.photo-drop.drag-over{ border-color: var(--primary); background: var(--primary-100); }
.photo-controls{ flex:1; min-width:220px; }

/* Signature module */
.sig-tabs{ margin-bottom: 14px; }
.sig-type-input{ width:100%; padding: 16px; border-radius: var(--radius-md); border: 1px solid var(--line-strong); background: var(--surface-alt); text-align:center; margin-bottom:12px;}
.sig-font-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:8px; margin-bottom:12px; }
.sig-font-option{
  border:1px solid var(--line-strong); border-radius:8px; padding:10px; text-align:center; cursor:pointer; font-size:1.1rem; background:var(--surface-alt);
}
.sig-font-option.active{ border-color: var(--primary); background: var(--primary-100); }
.sig-canvas-wrap{ border:2px dashed var(--line-strong); border-radius: var(--radius-md); background:#fff; margin-bottom:10px; touch-action:none; }
#sigCanvas{ display:block; width:100%; cursor:crosshair; border-radius: var(--radius-md); }
.sig-drop{
  border:2px dashed var(--line-strong); border-radius: var(--radius-md); padding:26px; text-align:center;
  color: var(--ink-faint); cursor:pointer; background: var(--surface-alt); font-size:.85rem;
}
.sig-drop.drag-over{ border-color: var(--primary); background: var(--primary-100); }
.sig-preview-thumb{ max-height:70px; margin: 10px auto; display:block; }

/* Export grid */
.export-grid{ display:grid; grid-template-columns: repeat(2,1fr); gap:10px; }
.export-btn{
  display:flex; flex-direction:column; align-items:center; gap:6px; padding:16px 8px;
  border-radius: var(--radius-md); border:1px solid var(--line-strong); background: var(--surface-alt);
  cursor:pointer; font-size:.76rem; font-weight:600; color: var(--ink-soft); transition: all var(--dur-fast) var(--ease);
}
.export-btn i{ font-size:1.2rem; color: var(--primary); }
.export-btn:hover{ transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--primary); }

.client-grid{ display:grid; grid-template-columns: repeat(3,1fr); gap:8px; margin-top:10px;}
.client-btn{ display:flex; flex-direction:column; align-items:center; gap:6px; padding:12px 4px; border-radius:10px; border:1px solid var(--line); background:var(--surface-alt); font-size:.72rem; font-weight:600; color:var(--ink-soft); cursor:pointer;}
.client-btn:hover{ border-color: var(--primary); color: var(--primary-600); }
.client-btn i{ font-size:1.3rem; }

/* ==========================================================================
   TOASTS
   ========================================================================== */
.toast-stack{
  position: fixed; bottom: 22px; right: 22px; z-index: 999;
  display:flex; flex-direction:column; gap:10px; max-width: 320px;
}
.toast{
  background: var(--surface); border:1px solid var(--line); border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg); padding: 12px 14px; display:flex; align-items:flex-start; gap:10px;
  font-size:.84rem; animation: toast-in var(--dur-med) var(--ease);
}
.toast i{ margin-top:2px; }
.toast.success i{ color: var(--success); }
.toast.error i{ color: var(--danger); }
.toast.info i{ color: var(--primary); }
.toast.leaving{ animation: toast-out var(--dur-med) var(--ease) forwards; }
@keyframes toast-in{ from{ opacity:0; transform: translateY(12px) scale(.96);} to{ opacity:1; transform:none; } }
@keyframes toast-out{ to{ opacity:0; transform: translateX(20px); } }

/* ==========================================================================
   MODAL
   ========================================================================== */
.modal-overlay{
  position: fixed; inset:0; background: rgba(15,13,25,.55); backdrop-filter: blur(4px);
  display:flex; align-items:center; justify-content:center; z-index: 998; padding:20px;
  animation: fade-in var(--dur-fast) var(--ease);
}
.modal-overlay[hidden]{ display:none; }
@keyframes fade-in{ from{opacity:0;} to{opacity:1;} }
.modal-box{
  background: var(--surface); border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  max-width: 560px; width:100%; max-height: 84vh; overflow-y:auto; padding: 26px;
  position:relative; animation: modal-in var(--dur-med) var(--ease);
}
@keyframes modal-in{ from{ opacity:0; transform: translateY(16px) scale(.97);} to{ opacity:1; transform:none; } }
.modal-close{ position:absolute; top:16px; right:16px; background:none; border:none; color:var(--ink-faint); cursor:pointer; font-size:1.1rem; }
.modal-title{ font-family: var(--font-display); font-weight:800; font-size:1.15rem; margin-bottom:14px; padding-right:24px; }
.modal-body-content{ font-size:.9rem; line-height:1.7; color: var(--ink-soft); }
.modal-body-content h4{ color: var(--ink); margin: 14px 0 6px; font-size:.95rem; }
.modal-body-content ol, .modal-body-content ul{ padding-left: 1.2em; list-style: decimal; margin-bottom:10px; }
.modal-body-content ul{ list-style: disc; }
.modal-body-content code{ background: var(--primary-100); padding:.15em .4em; border-radius:4px; font-size:.85em; }

/* Tooltip */
[data-tooltip]{ position:relative; }
[data-tooltip]:hover::after, [data-tooltip]:focus-visible::after{
  content: attr(data-tooltip);
  position:absolute; bottom: calc(100% + 8px); left:50%; transform: translateX(-50%);
  background: var(--ink); color: var(--paper); font-size:.7rem; padding: 5px 9px; border-radius:6px;
  white-space:nowrap; z-index: 50; box-shadow: var(--shadow-md); pointer-events:none;
  animation: tip-in var(--dur-fast) var(--ease);
}
@keyframes tip-in{ from{opacity:0; transform: translateX(-50%) translateY(4px);} to{opacity:1; transform: translateX(-50%);} }

/* ==========================================================================
   MOBILE PREVIEW DOCK (hidden on desktop)
   ========================================================================== */
.mobile-preview-dock{ display:none; }

/* ==========================================================================
   ANIMATIONS for panel switches
   ========================================================================== */
.panel-enter{ animation: panel-in var(--dur-med) var(--ease); }
@keyframes panel-in{ from{ opacity:0; transform: translateY(8px); } to{ opacity:1; transform:none; } }

.copy-flash{ animation: flash-bg .6s var(--ease); }
@keyframes flash-bg{ 0%{ background: var(--primary-100);} 100%{ background: transparent; } }

/* ==========================================================================
   RESPONSIVE — Tablet
   ========================================================================== */
@media (max-width: 1180px){
  .app-shell{ grid-template-columns: var(--nav-w) 1fr 1fr; }
}

@media (max-width: 980px){
  .app-shell{ grid-template-columns: 64px 1fr 1fr; }
  .nav-item-btn span{ display:none; }
  .nav-item-btn{ padding: 12px 2px; }
}

/* ==========================================================================
   RESPONSIVE — Mobile: accordion editor + preview dock
   ========================================================================== */
@media (max-width: 760px){
  .topbar-nav-toggle{ display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; border-radius:8px; border:none; background:transparent; color:var(--ink-soft); }
  .topbar-actions span{ display:none; }
  .topbar-actions .save-indicator{ display:none; }

  .app-shell{ grid-template-columns: 1fr; display:block; }

  .side-nav{
    position: fixed; top: var(--topbar-h); left:0; height: calc(100vh - var(--topbar-h));
    width: 78%; max-width: 280px; z-index: 70; transform: translateX(-100%);
    transition: transform var(--dur-med) var(--ease); box-shadow: var(--shadow-lg);
  }
  .side-nav.open{ transform: translateX(0); }
  .nav-item-btn{ flex-direction:row; justify-content:flex-start; gap:10px; padding:12px 10px; font-size:.82rem;}
  .nav-item-btn span{ display:inline; }

  .config-panel{ height:auto; border-right:none; padding: 18px 16px 200px; }
  .preview-panel{ display:none; } /* replaced by dock on mobile */

  .mobile-preview-dock{
    display:block; position: fixed; left:0; right:0; bottom:0; z-index:50;
    background: var(--surface); border-top:1px solid var(--line); border-radius: 18px 18px 0 0;
    box-shadow: 0 -8px 30px rgba(0,0,0,.12); max-height: 46vh; transition: max-height var(--dur-med) var(--ease);
  }
  .mobile-preview-dock.collapsed{ max-height: 54px; }
  .mobile-dock-handle{ display:flex; flex-direction:column; align-items:center; padding: 8px 0 4px; cursor:pointer; }
  .mobile-dock-handle span{ width:36px; height:4px; border-radius:3px; background: var(--line-strong); margin-bottom:6px; }
  .mobile-dock-label{ font-size:.78rem; font-weight:700; color: var(--ink-soft); display:flex; gap:6px; align-items:center;}
  .mobile-dock-body{ overflow-y:auto; padding: 4px 14px 18px; max-height: calc(46vh - 46px); }
  .mobile-dock-body .preview-card{ transform:none; max-width:100%; padding:18px; }

  .field-grid{ grid-template-columns: 1fr; }
  .category-grid{ grid-template-columns: repeat(2,1fr); }
  .theme-grid, .layout-grid{ grid-template-columns: repeat(2,1fr); }
  .export-grid{ grid-template-columns: repeat(2,1fr); }
  .builder-shell{ flex-direction:column; }
  .builder-palette{ width:100%; flex-direction:row; overflow-x:auto; }
}

@media (max-width: 420px){
  .category-grid, .theme-grid, .layout-grid, .export-grid{ grid-template-columns: 1fr 1fr; }
  .client-grid{ grid-template-columns: repeat(2,1fr); }
}

/* Nav backdrop for mobile drawer */
.nav-backdrop{ position:fixed; inset:0; background:rgba(0,0,0,.4); z-index:65; display:none; }
.nav-backdrop.show{ display:block; }