*{box-sizing:border-box}
:root{--bg:#f6f7f9;--card:#fff;--text:#121826;--muted:#6c7484;--line:#e5e8ee;--blue:#155eef}
html,body{margin:0;min-height:100%;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}
button,input,select{font:inherit}button{cursor:pointer}.app{min-height:100vh;display:grid;grid-template-columns:240px 1fr}
.sidebar{height:100vh;position:sticky;top:0;background:#0d1320;color:#fff;padding:24px 18px;display:flex;flex-direction:column;justify-content:space-between}
.brand{display:flex;align-items:center;gap:8px}.brand strong{font-size:27px;font-style:italic}.brand span{font-size:10px;font-weight:800;letter-spacing:1.5px;background:#1d5eff;padding:5px 7px;border-radius:5px}
.workspace-name{font-size:12px;color:#8f9aae;margin:8px 0 34px}.sidebar nav{display:grid;gap:7px}.sidebar nav button{border:0;background:transparent;color:#aeb7c7;text-align:left;padding:12px 13px;border-radius:9px;font-weight:700}.sidebar nav button.active{background:#1a2232;color:#fff}.sidebar nav button:disabled{opacity:.45;cursor:not-allowed}
.server-status{font-size:12px;color:#b8c0ce;margin-bottom:12px}.server-status i{display:inline-block;width:8px;height:8px;border-radius:50%;background:#27c66f;margin-right:8px}.signout{width:100%;padding:10px;border-radius:8px;border:1px solid #2e3747;background:transparent;color:#c7cfdb}
.topbar{padding:34px 36px 22px;display:flex;justify-content:space-between;align-items:flex-start}.topbar small,.preview-header small{font-size:11px;letter-spacing:1.6px;color:#7e8797;font-weight:800}.topbar h1{font-size:30px;margin:7px 0 8px}.topbar p{margin:0;color:var(--muted)}.ghost{background:#fff;border:1px solid var(--line);padding:10px 14px;border-radius:9px;font-weight:700}
.editor{padding:0 36px 40px;display:grid;grid-template-columns:minmax(360px,480px) minmax(520px,1fr);gap:22px;align-items:start}.left-column{display:grid;gap:16px}
.card,.preview-card{background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 8px 26px rgba(24,36,64,.04)}.card{padding:20px}
.section-title{display:flex;gap:13px;margin-bottom:18px}.section-title>b{font-size:11px;color:var(--blue);background:#eef4ff;padding:6px 7px;border-radius:7px;height:max-content}.section-title h2{font-size:16px;margin:1px 0 4px}.section-title p{font-size:12px;color:var(--muted);margin:0}
.dropzone{border:1px dashed #bdc7d8;background:#fafbfc;border-radius:12px;padding:24px;display:grid;place-items:center;text-align:center;cursor:pointer}.dropzone input{display:none}.dropzone.dragover{border-color:var(--blue);background:#f1f5ff}.upload-icon{width:34px;height:34px;border:1px solid #d9dfeb;border-radius:10px;display:grid;place-items:center;margin-bottom:10px}.dropzone em{font-size:12px;color:var(--muted);font-style:normal;margin-top:5px}
.file-row{margin-top:12px;padding:10px 12px;border:1px solid var(--line);border-radius:10px;display:flex;justify-content:space-between;align-items:center}.file-row div{display:grid}.file-row span{font-size:11px;color:var(--muted);margin-top:3px}.file-row button{border:0;background:transparent;color:#b42318}.hidden{display:none}
.switch-row{display:flex;justify-content:space-between;align-items:center;padding:16px 0 13px}.switch-row div{display:grid;gap:3px}.switch-row strong{font-size:13px}.switch-row span{font-size:11px;color:var(--muted)}.switch-row input{width:18px;height:18px}
.secondary,.primary,.viber{border-radius:10px;padding:12px 14px;font-weight:800}.secondary{border:1px solid #d6dce7;background:#fff}.full{width:100%}.status{font-size:12px;color:var(--muted);margin-top:9px;min-height:14px}
.field-grid{display:grid;grid-template-columns:1fr 1fr;gap:13px}.field{display:grid;gap:7px;font-size:12px;font-weight:800}.field input,.field select{border:1px solid #d9dee8;border-radius:9px;padding:11px 12px}.full-span{grid-column:1/-1}
.style-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:12px}.style{border:1px solid #dfe4ec;background:#fff;border-radius:11px;padding:10px;text-align:left;display:grid;grid-template-columns:48px 1fr;column-gap:10px}.style.active{border-color:var(--blue);box-shadow:0 0 0 2px rgba(21,94,239,.1)}.style strong{font-size:12px;align-self:end}.style small{font-size:10px;color:var(--muted)}.swatch{grid-row:1/3;width:48px;height:48px;border-radius:8px;border:1px solid #e1e5ec}.swatch.smart{background:linear-gradient(135deg,#fff 0 48%,#e8efff 48%)}.swatch.clean{background:#fff}.swatch.blue{background:linear-gradient(135deg,#071633,#165eef)}.swatch.dark{background:linear-gradient(135deg,#111,#3e4654)}
.preview-card{padding:20px;position:sticky;top:18px}.preview-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:15px}.preview-header h2{margin:6px 0 0;font-size:17px}.preview-header>span{font-size:11px;color:var(--muted);border:1px solid var(--line);border-radius:999px;padding:7px 10px}.canvas-stage{background:#edf0f4;border-radius:13px;padding:18px;display:grid;place-items:center}canvas{width:min(100%,700px);height:auto;background:#fff;box-shadow:0 16px 50px rgba(18,30,60,.15)}.export-bar{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:15px}.primary{background:var(--blue);color:#fff;border:1px solid var(--blue)}.viber{background:linear-gradient(90deg,#5b3bd8,#7655ed);color:#fff;border:0}.note{text-align:center;color:var(--muted);font-size:11px}
.login-page{min-height:100vh;display:grid;place-items:center}.login-card{width:min(92vw,390px);background:#fff;border:1px solid var(--line);border-radius:16px;padding:30px;box-shadow:0 20px 60px rgba(20,30,55,.1)}.login-card h1{margin:30px 0 7px}.login-card p{color:var(--muted)}.login-card label{display:grid;gap:8px;font-size:12px;font-weight:800}.login-card input{padding:12px;border:1px solid #d7dce6;border-radius:9px}.login-card button{width:100%;margin-top:14px;padding:12px;border:0;border-radius:9px;background:var(--blue);color:#fff;font-weight:800}.error{background:#fff0f0;color:#b42318;padding:10px;border-radius:8px;font-size:12px;margin-bottom:14px}
@media(max-width:1100px){.app{grid-template-columns:1fr}.sidebar{display:none}.editor{grid-template-columns:1fr}.preview-card{position:static}.topbar,.editor{padding-left:18px;padding-right:18px}}
@media(max-width:620px){.field-grid,.export-bar{grid-template-columns:1fr}.style-grid{grid-template-columns:1fr 1fr}.topbar h1{font-size:24px}}