:root {
  --navy: #071e3d;
  --blue: #0b5ed7;
  --blue-dark: #0849a8;
  --light-blue: #dceeff;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f5f7fa;
  --gray-200: #e7ecf2;
  --gray-300: #d3dbe6;
  --gray-500: #66758a;
  --text: #14213d;
  --success: #0c7a55;
  --danger: #b42318;
  --warning: #9a6700;
  --shadow-sm: 0 8px 24px rgba(7, 30, 61, .08);
  --shadow-lg: 0 22px 60px rgba(7, 30, 61, .14);
  --radius-sm: 12px;
  --radius: 20px;
  --radius-lg: 28px;
  --focus: 0 0 0 4px rgba(11, 94, 215, .18);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background: linear-gradient(180deg, #f7fbff 0, var(--gray-100) 34rem, var(--gray-100) 100%);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }
svg { width: 1em; height: 1em; fill: currentColor; }
[hidden] { display: none !important; }
.container { width: min(1440px, calc(100% - 40px)); margin-inline: auto; }
.skip-link { position: fixed; top: -100px; left: 16px; z-index: 9999; background: var(--navy); color: #fff; padding: 12px 18px; border-radius: 10px; }
.skip-link:focus { top: 16px; }

.site-header { position: sticky; top: 0; z-index: 50; border-bottom: 1px solid rgba(211,219,230,.8); background: rgba(255,255,255,.88); backdrop-filter: blur(18px); }
.header-inner { min-height: 78px; display: flex; align-items: center; justify-content: space-between; gap: 20px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--navy); text-decoration: none; }
.brand-mark { width: 44px; height: 44px; display: grid; place-items: center; border-radius: 14px; color: #fff; background: linear-gradient(135deg, var(--blue), var(--navy)); box-shadow: 0 10px 22px rgba(11,94,215,.24); }
.brand-mark svg { width: 26px; height: 26px; }
.brand strong, .brand small { display: block; }
.brand strong { font-size: 1.03rem; letter-spacing: -.01em; }
.brand small { color: var(--gray-500); font-size: .73rem; margin-top: 1px; }
.header-badge { padding: 8px 12px; border-radius: 999px; background: #e9fbf4; color: #086444; font-size: .78rem; font-weight: 750; }

.page-shell { padding-block: 42px 70px; }
.hero { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(320px, .65fr); gap: 36px; align-items: end; margin-bottom: 34px; }
.eyebrow { margin: 0 0 10px; font-size: .78rem; font-weight: 850; letter-spacing: .16em; color: var(--blue); }
.hero h1 { max-width: 820px; margin: 0; color: var(--navy); font-size: clamp(2.15rem, 4vw, 4.25rem); line-height: 1.02; letter-spacing: -.052em; }
.hero > div > p:last-child { max-width: 760px; color: var(--gray-500); font-size: 1.06rem; }
.privacy-note { display: flex; gap: 12px; align-items: flex-start; padding: 18px; border: 1px solid #cae6db; border-radius: var(--radius); background: rgba(240, 253, 248, .92); color: #245647; box-shadow: var(--shadow-sm); }
.privacy-note svg { flex: 0 0 auto; width: 24px; height: 24px; color: var(--success); }
.privacy-note span { font-size: .88rem; }
.privacy-note strong { display: block; color: #0a6849; margin-bottom: 2px; }

.type-section { margin-bottom: 28px; }
.section-heading > div, .panel-header, .preview-header > div { display: flex; gap: 13px; align-items: flex-start; }
.section-heading h2, .panel-header h2, .preview-header h2 { margin: 0; color: var(--navy); font-size: 1.16rem; letter-spacing: -.02em; }
.section-heading p, .panel-header p, .preview-header p { margin: 2px 0 0; color: var(--gray-500); font-size: .86rem; }
.step-number { flex: 0 0 auto; width: 31px; height: 31px; display: grid; place-items: center; border-radius: 10px; background: var(--light-blue); color: var(--blue); font-size: .83rem; font-weight: 850; }
.type-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; margin-top: 16px; }
.type-card { position: relative; min-height: 116px; display: grid; grid-template-columns: 52px 1fr auto; align-items: center; gap: 14px; padding: 18px; text-align: left; border: 1px solid var(--gray-200); border-radius: var(--radius); color: var(--text); background: rgba(255,255,255,.92); box-shadow: 0 6px 18px rgba(7,30,61,.05); transition: transform .2s ease, border-color .2s ease, box-shadow .2s ease, background .2s ease; }
.type-card:hover { transform: translateY(-2px); border-color: #a8cbed; box-shadow: 0 14px 30px rgba(7,30,61,.10); }
.type-card:focus-visible { outline: none; box-shadow: var(--focus); }
.type-card.is-selected { border-color: var(--blue); background: linear-gradient(145deg, #fff, #f0f7ff); box-shadow: 0 14px 30px rgba(11,94,215,.13); }
.type-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 16px; color: var(--blue); background: var(--light-blue); }
.type-icon svg { width: 27px; height: 27px; }
.type-card strong, .type-card small { display: block; }
.type-card strong { color: var(--navy); font-size: 1rem; }
.type-card small { margin-top: 3px; color: var(--gray-500); font-size: .78rem; }
.checkmark { width: 23px; height: 23px; display: grid; place-items: center; opacity: 0; border-radius: 50%; background: var(--blue); color: #fff; font-size: .72rem; font-weight: 900; transition: opacity .2s ease; }
.type-card.is-selected .checkmark { opacity: 1; }

.workspace { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(390px, .9fr); gap: 24px; align-items: start; }
.editor-column { display: grid; gap: 24px; }
.panel, .preview-panel { border: 1px solid var(--gray-200); border-radius: var(--radius-lg); background: rgba(255,255,255,.96); box-shadow: var(--shadow-sm); }
.panel { padding: 24px; }
.panel-header { padding-bottom: 20px; margin-bottom: 20px; border-bottom: 1px solid var(--gray-200); }
.preview-column { position: sticky; top: 102px; }
.preview-panel { overflow: hidden; box-shadow: var(--shadow-lg); }
.preview-header { display: flex; justify-content: space-between; gap: 18px; align-items: flex-start; padding: 22px 22px 18px; border-bottom: 1px solid var(--gray-200); }
.preview-status { flex: 0 0 auto; padding: 6px 10px; border-radius: 999px; background: #eef2f7; color: var(--gray-500); font-size: .72rem; font-weight: 800; }
.preview-status.is-ready { background: #e8f8f1; color: var(--success); }

.form-grid, .control-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.field { min-width: 0; }
.field-span-2 { grid-column: 1 / -1; }
.field label { display: flex; justify-content: space-between; gap: 10px; margin-bottom: 7px; color: var(--navy); font-size: .82rem; font-weight: 760; }
.field label > span[aria-hidden="true"] { color: var(--danger); }
.field label output, #title-counter { color: var(--gray-500); font-size: .72rem; font-weight: 700; }
.field input:not([type="checkbox"]):not([type="range"]):not([type="color"]), .field select, .field textarea, .pdf-row select { width: 100%; border: 1px solid var(--gray-300); border-radius: 12px; background: #fff; color: var(--text); padding: 11px 12px; outline: none; transition: border-color .2s ease, box-shadow .2s ease, background .2s ease; }
.field textarea { resize: vertical; min-height: 92px; }
.field input:hover, .field select:hover, .field textarea:hover, .pdf-row select:hover { border-color: #aebbd0; }
.field input:focus, .field select:focus, .field textarea:focus, .pdf-row select:focus { border-color: var(--blue); box-shadow: var(--focus); }
.field input[aria-invalid="true"], .field select[aria-invalid="true"], .field textarea[aria-invalid="true"] { border-color: var(--danger); background: #fff7f6; }
.field small { display: block; margin-top: 6px; color: var(--gray-500); font-size: .72rem; }
.input-with-action { position: relative; }
.input-with-action input { padding-right: 45px !important; }
.icon-button { position: absolute; inset: 4px 4px 4px auto; width: 38px; border: 0; border-radius: 9px; background: transparent; color: var(--gray-500); }
.icon-button:hover { background: var(--gray-100); color: var(--navy); }
.input-prefix { display: flex; align-items: stretch; }
.input-prefix span { display: grid; place-items: center; min-width: 48px; border: 1px solid var(--gray-300); border-right: 0; border-radius: 12px 0 0 12px; background: var(--gray-100); color: var(--gray-500); font-weight: 760; }
.input-prefix input { border-radius: 0 12px 12px 0 !important; }

.switch-row, .check-row { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border: 1px solid var(--gray-200); border-radius: 13px; cursor: pointer; background: var(--gray-50); }
.switch-row input, .check-row input { position: absolute; opacity: 0; pointer-events: none; }
.switch-row strong, .switch-row small { display: block; }
.switch-row strong { font-size: .82rem; }
.switch-row small { color: var(--gray-500); font-size: .72rem; }
.switch { position: relative; flex: 0 0 auto; width: 42px; height: 24px; border-radius: 999px; background: #c7d0dc; transition: background .2s ease; }
.switch::after { content: ""; position: absolute; width: 18px; height: 18px; top: 3px; left: 3px; border-radius: 50%; background: #fff; box-shadow: 0 2px 6px rgba(0,0,0,.2); transition: transform .2s ease; }
.switch-row input:checked + .switch { background: var(--blue); }
.switch-row input:checked + .switch::after { transform: translateX(18px); }
.check-row { position: relative; font-size: .82rem; font-weight: 700; }
.check-row::before { content: ""; width: 20px; height: 20px; flex: 0 0 auto; border: 1.5px solid var(--gray-300); border-radius: 6px; background: #fff; }
.check-row:has(input:checked)::before { border-color: var(--blue); background: var(--blue); box-shadow: inset 0 0 0 4px var(--blue); }
.check-row:has(input:checked)::after { content: "✓"; position: absolute; left: 18px; color: #fff; font-size: .72rem; font-weight: 900; }
.switch-row:focus-within, .check-row:focus-within { box-shadow: var(--focus); }

input[type="range"] { width: 100%; accent-color: var(--blue); }
input[type="color"] { width: 100%; height: 45px; padding: 3px; border: 1px solid var(--gray-300); border-radius: 12px; background: #fff; cursor: pointer; }

.button { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 9px; border: 1px solid transparent; border-radius: 12px; padding: 10px 16px; font-weight: 800; font-size: .84rem; transition: transform .2s ease, background .2s ease, border-color .2s ease, box-shadow .2s ease; }
.button:hover:not(:disabled) { transform: translateY(-1px); }
.button:focus-visible, .text-button:focus-visible, .accordion-toggle:focus-visible { outline: none; box-shadow: var(--focus); }
.button:disabled { cursor: not-allowed; opacity: .48; }
.button svg { width: 18px; height: 18px; }
.button-primary { background: linear-gradient(135deg, var(--blue), #074caf); color: #fff; box-shadow: 0 10px 22px rgba(11,94,215,.22); }
.button-primary:hover:not(:disabled) { background: linear-gradient(135deg, #0a55c3, #063f91); }
.button-secondary { border-color: var(--gray-300); background: #fff; color: var(--navy); }
.button-secondary:hover:not(:disabled) { border-color: #99b8dc; background: #f5faff; }
.button-large { width: 100%; min-height: 50px; margin-top: 20px; }
.button-spinner { display: none; width: 17px; height: 17px; border: 2px solid rgba(255,255,255,.4); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; }
.button.is-loading .button-spinner { display: inline-block; }
.button.is-loading svg { display: none; }
@keyframes spin { to { transform: rotate(360deg); } }

.message { margin-top: 16px; border-radius: 12px; padding: 12px 14px; font-size: .82rem; }
.message-error { border: 1px solid #f4b8b2; background: #fff3f2; color: var(--danger); }
.message-error ul { margin: 7px 0 0 18px; padding: 0; }
.message-success { margin: 14px 20px 0; border: 1px solid #bde8d7; background: #effbf6; color: var(--success); }

.accordion { border-top: 1px solid var(--gray-200); }
.accordion:first-of-type { border-top: 0; }
.accordion-toggle { width: 100%; display: flex; justify-content: space-between; align-items: center; border: 0; background: transparent; color: var(--navy); padding: 17px 0; font-size: .9rem; font-weight: 820; text-align: left; }
.accordion-toggle span:last-child { font-size: 1.2rem; transition: transform .2s ease; }
.accordion:not(.is-open) .accordion-toggle span:last-child { transform: rotate(-90deg); }
.accordion-content { padding: 0 0 20px; }
.accordion:not(.is-open) .accordion-content { display: none; }
.background-gallery { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.background-option { position: relative; aspect-ratio: 4 / 5; overflow: hidden; padding: 0; border: 2px solid transparent; border-radius: 13px; background: var(--gray-100); box-shadow: 0 6px 16px rgba(7,30,61,.08); }
.background-option img { width: 100%; height: 100%; object-fit: cover; display: block; }
.background-option span { position: absolute; inset: auto 5px 5px; padding: 4px 6px; border-radius: 7px; background: rgba(7,30,61,.74); color: #fff; font-size: .58rem; line-height: 1.2; backdrop-filter: blur(5px); }
.background-option:hover { transform: translateY(-2px); }
.background-option.is-selected { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(11,94,215,.14); }
.gallery-loading { grid-column: 1 / -1; color: var(--gray-500); font-size: .82rem; padding: 16px 0; }
.contrast-warning { border: 1px solid #efd287; border-radius: 10px; background: #fff9e8; color: var(--warning); padding: 10px 12px; font-size: .76rem; font-weight: 700; }

.canvas-wrap { padding: 20px; background: linear-gradient(135deg, #eef3f8, #e3ebf4); }
#preview-canvas { display: block; width: min(100%, 540px); height: auto; margin: 0 auto; border-radius: 18px; background: #fff; box-shadow: 0 18px 40px rgba(7,30,61,.22); }
.export-block { padding: 20px; border-top: 1px solid var(--gray-200); }
.export-block h3 { margin: 0 0 12px; color: var(--navy); font-size: .94rem; }
.export-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 10px; }
.pdf-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; grid-column: 1 / -1; }
.pdf-row select { min-width: 0; }
.secondary-actions { display: flex; justify-content: center; gap: 18px; padding: 0 20px 20px; }
.text-button { border: 0; background: transparent; color: var(--gray-500); font-size: .78rem; text-decoration: underline; text-underline-offset: 3px; }
.text-button:hover { color: var(--blue); }

.toast-region { position: fixed; right: 18px; bottom: 18px; z-index: 100; display: grid; gap: 10px; pointer-events: none; }
.toast { min-width: 260px; max-width: 390px; padding: 13px 15px; border-radius: 13px; background: var(--navy); color: #fff; box-shadow: var(--shadow-lg); font-size: .82rem; animation: toast-in .25s ease both; }
.toast.is-error { background: #8f1d15; }
@keyframes toast-in { from { opacity: 0; transform: translateY(10px); } }
.site-footer { border-top: 1px solid var(--gray-200); background: #fff; color: var(--gray-500); font-size: .78rem; }
.site-footer .container { min-height: 76px; display: flex; justify-content: space-between; align-items: center; gap: 20px; }
.site-footer span:first-child { color: var(--navy); font-weight: 850; }
.noscript { position: fixed; inset: auto 0 0; z-index: 200; padding: 14px; background: var(--danger); color: #fff; text-align: center; font-weight: 700; }

@media (max-width: 1180px) {
  .type-grid { grid-template-columns: repeat(2, 1fr); }
  .workspace { grid-template-columns: minmax(0, 1fr) minmax(350px, .72fr); }
  .background-gallery { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 920px) {
  .hero { grid-template-columns: 1fr; gap: 18px; }
  .privacy-note { max-width: 640px; }
  .workspace { grid-template-columns: 1fr; }
  .preview-column { position: static; }
  .preview-panel { box-shadow: var(--shadow-sm); }
  .canvas-wrap { padding: 26px; }
  #preview-canvas { width: min(100%, 520px); }
  .background-gallery { grid-template-columns: repeat(4, 1fr); }
}
@media (max-width: 620px) {
  .container { width: min(100% - 24px, 1440px); }
  .site-header { position: relative; }
  .header-inner { min-height: 70px; }
  .header-badge { display: none; }
  .page-shell { padding-block: 28px 45px; }
  .hero h1 { font-size: clamp(2rem, 12vw, 3.1rem); }
  .hero > div > p:last-child { font-size: .94rem; }
  .type-grid { grid-template-columns: 1fr; gap: 10px; }
  .type-card { min-height: 88px; grid-template-columns: 44px 1fr auto; padding: 14px; }
  .type-icon { width: 44px; height: 44px; border-radius: 13px; }
  .panel { padding: 18px; border-radius: 22px; }
  .preview-panel { border-radius: 22px; }
  .form-grid, .control-grid { grid-template-columns: 1fr; gap: 15px; }
  .field-span-2 { grid-column: auto; }
  .background-gallery { grid-template-columns: repeat(3, 1fr); }
  .preview-header { padding: 18px; }
  .canvas-wrap { padding: 14px; }
  #preview-canvas { border-radius: 13px; }
  .export-grid { grid-template-columns: 1fr; }
  .pdf-row { grid-column: auto; grid-template-columns: 1fr; }
  .button { width: 100%; }
  .secondary-actions { flex-direction: column; gap: 4px; }
  .site-footer .container { flex-direction: column; justify-content: center; gap: 3px; text-align: center; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}