:root {
  --its-bg: #f5f7fb;
  --its-surface: #ffffff;
  --its-text: #172033;
  --its-muted: #657089;
  --its-border: #dbe2ee;
  --its-primary: #315efb;
  --its-primary-dark: #2447c8;
  --its-success: #087f5b;
  --its-radius: 20px;
  --its-shadow: 0 18px 50px rgba(26, 39, 72, .10);
}

.its-shell, .its-home {max-width: 1180px; margin: 0 auto; padding: 28px 18px 70px; color: var(--its-text);}
.its-hero, .its-home-hero {text-align: center; padding: 34px 20px 28px;}
.its-hero h1, .its-home-hero h1 {font-size: clamp(32px, 5vw, 58px); line-height: 1.04; letter-spacing: -.035em; margin: 16px 0;}
.its-hero p, .its-home-hero p {max-width: 760px; margin: 0 auto; font-size: 18px; color: var(--its-muted);}
.its-badge {display: inline-flex; align-items: center; padding: 7px 12px; border-radius: 999px; background: #e9efff; color: #2146be; font-size: 13px; font-weight: 700;}
.its-privacy {display: inline-block; margin-top: 14px; color: var(--its-success); font-weight: 650; font-size: 14px;}
.its-app {background: var(--its-surface); border: 1px solid var(--its-border); border-radius: 28px; padding: 22px; box-shadow: var(--its-shadow);}
.its-dropzone {min-height: 280px; border: 2px dashed #b9c5db; border-radius: var(--its-radius); background: linear-gradient(180deg,#fbfcff,#f6f8fe); display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 8px; text-align: center; padding: 24px; transition: .2s ease; cursor: pointer;}
.its-dropzone:hover, .its-dropzone.is-dragover {border-color: var(--its-primary); background: #f0f4ff; transform: translateY(-1px);}
.its-drop-icon {width: 58px; height: 58px; border-radius: 18px; display: grid; place-items: center; background: #e8eeff; color: var(--its-primary); font-size: 34px; font-weight: 400;}
.its-dropzone strong {font-size: 22px;}
.its-dropzone span {color: var(--its-muted);}
.its-button {appearance: none; border: 0; border-radius: 12px; padding: 12px 18px; font-weight: 750; font-size: 15px; background: var(--its-primary); color: #fff !important; text-decoration: none !important; cursor: pointer; transition: .18s ease; display: inline-flex; align-items: center; justify-content: center; min-height: 46px;}
.its-button:hover {background: var(--its-primary-dark); transform: translateY(-1px);}
.its-button-secondary {background: #eef2f8; color: var(--its-text) !important;}
.its-button-secondary:hover {background: #e3e8f1;}
.its-workspace {display: grid; grid-template-columns: minmax(0, 1.4fr) minmax(280px, .6fr); gap: 22px;}
.its-preview-panel {min-width: 0;}
.its-preview-wrap {min-height: 380px; border-radius: 18px; background: repeating-conic-gradient(#eef1f6 0 25%,#fff 0 50%) 50%/24px 24px; display: grid; place-items: center; overflow: auto; padding: 16px; border: 1px solid var(--its-border);}
.its-canvas, .its-image-preview {display: block; max-width: 100%; max-height: 620px; width: auto; height: auto; box-shadow: 0 5px 24px rgba(31,44,76,.12);}
.its-file-info {margin-top: 10px; color: var(--its-muted); font-size: 14px;}
.its-controls {border: 1px solid var(--its-border); border-radius: 18px; padding: 18px; background: #fbfcff; align-self: start;}
.its-control {margin-bottom: 16px;}
.its-control:last-child {margin-bottom: 0;}
.its-control label {display: block; font-weight: 700; margin-bottom: 7px;}
.its-control input[type="number"], .its-control input[type="text"], .its-control textarea, .its-control select {width: 100%; border: 1px solid #cbd5e5; border-radius: 10px; padding: 11px 12px; background: #fff; color: var(--its-text); box-sizing: border-box;}
.its-control input[type="range"] {width: 100%;}
.its-control-row {display: grid; grid-template-columns: 1fr 1fr; gap: 10px;}
.its-checkbox {display: flex !important; align-items: center; gap: 8px; font-weight: 600 !important;}
.its-actions {display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px;}
.its-status {min-height: 26px; padding-top: 8px; color: var(--its-muted); font-size: 14px;}
.its-status.is-error {color: #b42318;}
.its-status.is-success {color: var(--its-success);}
.its-content-grid {display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin-top: 28px;}
.its-content-grid article {background: #fff; border: 1px solid var(--its-border); border-radius: 18px; padding: 22px;}
.its-content-grid h2 {margin-top: 0; font-size: 23px;}
.its-content-grid li {margin: 8px 0;}
.its-faq {background: #fff; border: 1px solid var(--its-border); border-radius: 14px; padding: 15px 18px; margin-top: 12px;}
.its-faq summary {font-weight: 750; cursor: pointer;}
.its-category {margin-top: 34px;}
.its-category h2 {font-size: 30px; margin-bottom: 16px;}
.its-card-grid {display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px;}
.its-card {display: flex; flex-direction: column; gap: 8px; padding: 20px; border-radius: 18px; border: 1px solid var(--its-border); background: #fff; color: var(--its-text) !important; text-decoration: none !important; box-shadow: 0 7px 24px rgba(26,39,72,.05); transition: .18s ease;}
.its-card:hover {transform: translateY(-3px); border-color: #aebfe8; box-shadow: 0 14px 30px rgba(26,39,72,.09);}
.its-card strong {font-size: 18px;}
.its-card > span:last-child {color: var(--its-muted); font-size: 14px;}
.its-card-icon {width: 38px; height: 38px; display: grid; place-items: center; border-radius: 11px; background: #edf2ff; color: #315efb; font-size: 20px; font-weight: 800;}
.its-base64-output {min-height: 160px; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px;}
.its-note {padding: 11px 12px; background: #edf6ff; border-radius: 10px; color: #23456e; font-size: 13px;}

@media (max-width: 850px) {
  .its-workspace {grid-template-columns: 1fr;}
  .its-card-grid {grid-template-columns: repeat(2,minmax(0,1fr));}
}
@media (max-width: 600px) {
  .its-shell, .its-home {padding-left: 12px; padding-right: 12px;}
  .its-app {padding: 12px; border-radius: 20px;}
  .its-dropzone {min-height: 230px;}
  .its-content-grid, .its-card-grid {grid-template-columns: 1fr;}
  .its-control-row {grid-template-columns: 1fr;}
  .its-actions .its-button {width: 100%;}
}