/* ═══════════════════════════════════════════════════════
   Design Editor — Premium Stylesheet
   Dark mode, glassmorphism, Canva-inspired
   Author: Lê Trung Hoàng
   ═══════════════════════════════════════════════════════ */

/* ── Reset ── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{width:100%;height:100%;overflow:hidden;font-family:'Inter','Segoe UI',system-ui,sans-serif;background:#0a0a14;color:#e2e8f0;font-size:13px;-webkit-font-smoothing:antialiased}
button{border:none;background:none;color:inherit;cursor:pointer;font:inherit}
input,textarea,select{font:inherit;color:inherit;background:transparent;border:none;outline:none}
::-webkit-scrollbar{width:4px;height:4px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:rgba(255,255,255,.06);border-radius:4px}
::-webkit-scrollbar-thumb:hover{background:rgba(255,255,255,.12)}

/* ── Toolbar ── */
#toolbar{display:flex;align-items:center;justify-content:space-between;height:42px;padding:0 10px;background:rgba(12,12,22,.97);border-bottom:1px solid rgba(255,255,255,.05);z-index:100;position:relative;gap:4px}
.toolbar-left,.toolbar-center,.toolbar-right{display:flex;align-items:center;gap:4px}
.toolbar-center{position:absolute;left:50%;transform:translateX(-50%)}
.toolbar-title{font-size:11px;font-weight:700;background:linear-gradient(135deg,#06b6d4,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent;letter-spacing:.5px}
.toolbar-group{display:flex;align-items:center;gap:1px}
.toolbar-sep{width:1px;height:18px;background:rgba(255,255,255,.05);margin:0 4px}

.tool-btn{width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:7px;color:#64748b;transition:all .12s}
.tool-btn:hover{background:rgba(255,255,255,.05);color:#cbd5e1}
.tool-btn.active{background:rgba(6,182,212,.12);color:#22d3ee;box-shadow:0 0 10px rgba(6,182,212,.1)}

.action-btn{width:28px;height:28px;display:flex;align-items:center;justify-content:center;border-radius:6px;font-size:14px;color:#475569;transition:all .12s}
.action-btn:hover{background:rgba(255,255,255,.05);color:#cbd5e1}
.action-btn.active{color:#22d3ee;background:rgba(6,182,212,.08)}
.action-btn:disabled{opacity:.25;cursor:not-allowed;pointer-events:none}

.zoom-label{font-size:10px;font-weight:600;color:#64748b;min-width:36px;text-align:center;font-variant-numeric:tabular-nums}

.export-btn{padding:4px 10px;border-radius:6px;font-size:10px;font-weight:600;background:linear-gradient(135deg,#06b6d4,#7c3aed);color:#fff;transition:all .12s}
.export-btn:hover{transform:scale(1.02);box-shadow:0 3px 12px rgba(6,182,212,.2)}
.export-btn.secondary{background:transparent;border:1px solid rgba(255,255,255,.06);color:#64748b;font-size:10px}
.export-btn.secondary:hover{border-color:rgba(6,182,212,.25);color:#22d3ee}

/* Color pickers in toolbar */
.color-pickers{gap:6px!important}
.color-pick-wrap{display:flex;flex-direction:column;align-items:center;gap:1px}
.toolbar-color-input{width:22px;height:22px;border:2px solid rgba(255,255,255,.08);border-radius:5px;cursor:pointer;padding:0;-webkit-appearance:none}
.toolbar-color-input::-webkit-color-swatch-wrapper{padding:0}
.toolbar-color-input::-webkit-color-swatch{border:none;border-radius:3px}
.color-pick-label{font-size:7px;color:#475569;text-transform:uppercase;letter-spacing:.5px;font-weight:600}

/* ── Sub-toolbar ── */
#sub-toolbar{height:34px;background:rgba(12,12,22,.95);border-bottom:1px solid rgba(255,255,255,.04);display:flex;align-items:center;padding:0 14px;gap:8px}
#sub-content{display:flex;align-items:center;gap:6px;font-size:11px;color:#64748b}

/* ── Workspace ── */
#workspace{display:flex;height:calc(100vh - 42px);position:relative}

/* ── Sidebar ── */
#sidebar{width:230px;background:rgba(12,12,22,.95);border-right:1px solid rgba(255,255,255,.04);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}
.sidebar-tabs{display:flex;border-bottom:1px solid rgba(255,255,255,.04);padding:0 6px;flex-shrink:0}
.stab{flex:1;padding:8px 4px;font-size:10px;font-weight:600;color:#475569;text-align:center;border-bottom:2px solid transparent;transition:all .12s;letter-spacing:.3px}
.stab:hover{color:#94a3b8}
.stab.active{color:#22d3ee;border-bottom-color:#22d3ee}
.sidebar-content{flex:1;overflow-y:auto;padding:10px}
.stab-panel{display:none}
.stab-panel.active{display:block}
.sidebar-subtitle{font-size:9px;text-transform:uppercase;letter-spacing:1px;color:#475569;font-weight:700;margin-bottom:8px}

.shape-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}
.shape-item{aspect-ratio:1;border-radius:8px;border:1px solid rgba(255,255,255,.05);font-size:18px;display:flex;align-items:center;justify-content:center;color:#475569;transition:all .12s}
.shape-item:hover{background:rgba(6,182,212,.06);color:#22d3ee;border-color:rgba(6,182,212,.15);transform:scale(1.04)}

.sidebar-action-btn{width:100%;padding:8px 10px;margin-bottom:4px;border-radius:7px;border:1px solid rgba(255,255,255,.05);font-size:11px;font-weight:500;color:#94a3b8;text-align:left;transition:all .12s}
.sidebar-action-btn:hover{background:rgba(6,182,212,.06);border-color:rgba(6,182,212,.12);color:#e2e8f0}

.text-style-btn[data-textstyle="heading"]{font-size:14px;font-weight:700}
.text-style-btn[data-textstyle="subheading"]{font-size:12px;font-weight:600}
.text-style-btn[data-textstyle="body"]{font-size:11px}

.sidebar-select{width:100%;padding:6px 8px;border-radius:6px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);font-size:11px;color:#e2e8f0;margin-bottom:6px}
.sidebar-range{width:100%;-webkit-appearance:none;height:3px;background:rgba(255,255,255,.06);border-radius:2px;outline:none}
.sidebar-range::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;border-radius:50%;background:#22d3ee;cursor:pointer}
.range-val{font-size:10px;color:#64748b;font-variant-numeric:tabular-nums;margin-left:6px}

.color-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:4px}
.color-swatch{width:100%;aspect-ratio:1;border-radius:5px;border:2px solid transparent;cursor:pointer;transition:all .12s}
.color-swatch:hover{transform:scale(1.15);border-color:rgba(255,255,255,.25)}
.color-swatch.active{border-color:#22d3ee;box-shadow:0 0 6px rgba(6,182,212,.2)}

.sidebar-color-full{width:100%;height:32px;border-radius:6px;border:1px solid rgba(255,255,255,.06);cursor:pointer;-webkit-appearance:none;padding:2px}
.sidebar-color-full::-webkit-color-swatch-wrapper{padding:0}
.sidebar-color-full::-webkit-color-swatch{border:none;border-radius:4px}

.gradient-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:5px}
.gradient-swatch{aspect-ratio:1.5;border-radius:6px;cursor:pointer;border:2px solid transparent;transition:all .12s}
.gradient-swatch:hover{transform:scale(1.06);border-color:rgba(255,255,255,.2)}

.template-grid{display:flex;flex-direction:column;gap:4px}
.template-item{padding:8px 10px;border-radius:7px;border:1px solid rgba(255,255,255,.05);text-align:left;font-size:11px;font-weight:500;color:#94a3b8;transition:all .12s}
.template-item:hover{background:rgba(6,182,212,.05);border-color:rgba(6,182,212,.12);color:#e2e8f0}
.template-item small{color:#334155;font-weight:400;font-size:10px}

.custom-size-row{display:flex;align-items:center;gap:4px;margin-top:4px}
.custom-size-input{width:60px;padding:5px 6px;border-radius:5px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.06);font-size:11px;color:#e2e8f0;text-align:center}
.custom-size-x{color:#475569;font-size:12px}
.custom-size-btn{padding:5px 10px;border-radius:5px;font-size:10px;font-weight:600;background:linear-gradient(135deg,#06b6d4,#7c3aed);color:#fff}

/* ── Canvas Area ── */
#canvas-container{flex:1;position:relative;overflow:hidden;background:#111119}
#main-canvas{position:absolute;top:0;left:0}
#text-editor{position:absolute;z-index:50;background:rgba(0,0,0,.3);color:#fff;border:2px solid #22d3ee;padding:4px 8px;resize:none;outline:none;font-size:16px;min-width:60px;min-height:24px;border-radius:4px;backdrop-filter:blur(4px)}

/* Rulers */
.ruler{position:absolute;background:rgba(12,12,22,.9);z-index:40;pointer-events:none}
.ruler-h{top:0;left:24px;right:0;height:24px}
.ruler-v{top:24px;left:0;bottom:0;width:24px}

/* ── Right Panel ── */
#right-panel{width:240px;background:rgba(12,12,22,.95);border-left:1px solid rgba(255,255,255,.04);display:flex;flex-direction:column;flex-shrink:0;overflow:hidden}
.panel-title{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;font-size:9px;text-transform:uppercase;letter-spacing:1px;color:#475569;font-weight:700;border-bottom:1px solid rgba(255,255,255,.04)}
.panel-btn{width:20px;height:20px;border-radius:4px;font-size:12px;display:flex;align-items:center;justify-content:center;color:#475569;transition:all .12s}
.panel-btn:hover{background:rgba(6,182,212,.08);color:#22d3ee}

/* Properties */
#properties-panel{border-bottom:1px solid rgba(255,255,255,.04)}
#props-content{padding:8px 10px;max-height:350px;overflow-y:auto}
.props-hint{color:#334155;font-size:11px;text-align:center;padding:16px 0}
.props-hint small{color:#1e293b;font-size:9px}
.prop-row{display:flex;align-items:center;gap:6px;margin-bottom:6px}
.prop-label{font-size:9px;color:#475569;min-width:44px;text-transform:uppercase;letter-spacing:.4px;font-weight:600}
.prop-input{flex:1;padding:4px 6px;border-radius:5px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.05);font-size:11px;color:#e2e8f0;transition:all .12s}
.prop-input:focus{border-color:rgba(6,182,212,.25);box-shadow:0 0 8px rgba(6,182,212,.06)}
.prop-input[type="color"]{width:28px;height:24px;padding:1px;cursor:pointer;-webkit-appearance:none;border:none;background:none}
.prop-input[type="color"]::-webkit-color-swatch-wrapper{padding:0}
.prop-input[type="color"]::-webkit-color-swatch{border:none;border-radius:3px}
.prop-input[type="range"]{-webkit-appearance:none;height:3px;background:rgba(255,255,255,.06);border-radius:2px;border:none}
.prop-input[type="range"]::-webkit-slider-thumb{-webkit-appearance:none;width:12px;height:12px;border-radius:50%;background:#22d3ee;cursor:pointer}
.prop-select{padding:4px 6px;border-radius:5px;background:rgba(255,255,255,.04);border:1px solid rgba(255,255,255,.05);font-size:10px;color:#e2e8f0}
.prop-section{font-size:8px;text-transform:uppercase;letter-spacing:.8px;color:#334155;font-weight:700;margin:10px 0 6px;padding-top:8px;border-top:1px solid rgba(255,255,255,.03)}

/* Layers */
#layers-panel{flex:1;display:flex;flex-direction:column;overflow:hidden}
#layers-list{flex:1;overflow-y:auto;padding:3px 5px}
.layer-item{display:flex;align-items:center;gap:5px;padding:5px 6px;border-radius:6px;margin-bottom:1px;cursor:pointer;transition:all .1s;border:1px solid transparent;font-size:11px}
.layer-item:hover{background:rgba(255,255,255,.02)}
.layer-item.selected{background:rgba(6,182,212,.06);border-color:rgba(6,182,212,.1)}
.layer-icon{width:22px;height:22px;border-radius:4px;background:rgba(255,255,255,.03);display:flex;align-items:center;justify-content:center;font-size:10px;flex-shrink:0}
.layer-name{flex:1;font-size:10px;color:#64748b;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.layer-item.selected .layer-name{color:#cbd5e1}
.layer-actions{display:flex;gap:1px;opacity:0;transition:opacity .12s}
.layer-item:hover .layer-actions{opacity:1}
.layer-act-btn{width:18px;height:18px;border-radius:3px;font-size:9px;display:flex;align-items:center;justify-content:center;color:#475569;transition:all .1s}
.layer-act-btn:hover{background:rgba(255,255,255,.05);color:#cbd5e1}
.layer-act-btn.locked{color:#f59e0b}
.layer-act-btn.hidden{color:#ef4444}

/* ── Context Menu ── */
.context-menu{position:fixed;z-index:200;min-width:200px;padding:5px;border-radius:10px;background:rgba(12,16,28,.96);border:1px solid rgba(255,255,255,.06);backdrop-filter:blur(20px);box-shadow:0 12px 40px rgba(0,0,0,.5)}
.context-menu button{display:flex;align-items:center;gap:8px;width:100%;padding:6px 10px;border-radius:5px;font-size:11px;color:#94a3b8;transition:all .08s;text-align:left}
.context-menu button:hover{background:rgba(6,182,212,.06);color:#e2e8f0}
.context-menu .ctx-danger:hover{background:rgba(239,68,68,.08);color:#f87171}
.ctx-sep{height:1px;background:rgba(255,255,255,.03);margin:3px 6px}
.ctx-shortcut{margin-left:auto;font-size:9px;color:#334155}

/* ── Modal ── */
.modal{position:fixed;inset:0;z-index:300;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.6);backdrop-filter:blur(4px)}
.modal-content{width:360px;padding:24px;border-radius:14px;background:rgba(12,16,28,.96);border:1px solid rgba(255,255,255,.06);position:relative}
.modal-title{font-size:15px;font-weight:700;margin-bottom:14px;background:linear-gradient(135deg,#06b6d4,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.modal-body{display:grid;grid-template-columns:1fr 1fr;gap:6px}
.modal-btn{padding:14px;border-radius:8px;border:1px solid rgba(255,255,255,.05);font-size:12px;font-weight:600;color:#94a3b8;transition:all .12s;text-align:center}
.modal-btn:hover{background:rgba(6,182,212,.06);border-color:rgba(6,182,212,.15);color:#e2e8f0;transform:scale(1.01)}
.modal-btn small{display:block;font-size:9px;color:#334155;margin-top:2px;font-weight:400}
.modal-close{position:absolute;top:10px;right:10px;width:26px;height:26px;border-radius:6px;font-size:13px;color:#475569;transition:all .12s}
.modal-close:hover{background:rgba(255,255,255,.05);color:#e2e8f0}

/* ── Status Bar ── */
#status-bar{height:22px;background:rgba(12,12,22,.97);border-top:1px solid rgba(255,255,255,.04);display:flex;align-items:center;justify-content:flex-end;padding:0 10px;gap:14px;font-size:9px;font-family:monospace;color:#334155}
#status-bar span{font-variant-numeric:tabular-nums}
#status-info{margin-right:auto;color:#475569}

/* ── Responsive ── */
@media(max-width:960px){#sidebar{width:180px}#right-panel{width:200px}}
@media(max-width:680px){#sidebar{display:none}#right-panel{display:none}#status-bar{display:none}}