:root{--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;--font-heading: "Outfit", "Inter", sans-serif;--bg-main: #f8fafc;--bg-card: #ffffff;--bg-card-hover: #f1f5f9;--border-color: #e2e8f0;--border-focus: #0d9488;--text-primary: #0f172a;--text-secondary: #475569;--text-muted: #94a3b8;--accent-primary: #0d9488;--accent-hover: #0f766e;--accent-light: #ccfbf1;--accent-glow: rgba(13, 148, 136, .15);--primary-btn-bg: #0d9488;--primary-btn-text: #ffffff;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -2px rgba(0, 0, 0, .05);--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-full: 9999px}[data-theme=dark]{--bg-main: #0b0f19;--bg-card: #131b2e;--bg-card-hover: #1c273e;--border-color: #1e293b;--border-focus: #14b8a6;--text-primary: #f8fafc;--text-secondary: #cbd5e1;--text-muted: #64748b;--accent-primary: #14b8a6;--accent-hover: #2dd4bf;--accent-light: rgba(20, 184, 166, .15);--accent-glow: rgba(20, 184, 166, .25);--primary-btn-bg: #0d9488;--primary-btn-text: #ffffff;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .3);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 25px -5px rgba(0, 0, 0, .5)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-main);color:var(--text-primary);line-height:1.5;transition:background-color .25s ease,color .25s ease;min-height:100vh;-webkit-font-smoothing:antialiased}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.app-layout{display:flex;flex-direction:column;min-height:100vh}.navbar{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;background-color:var(--bg-card);border-bottom:1px solid var(--border-color);position:sticky;top:0;z-index:40;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:var(--shadow-sm)}.navbar-brand{display:flex;align-items:center;gap:12px}.brand-icon{width:38px;height:38px;background:linear-gradient(135deg,var(--accent-primary),#0284c7);color:#fff;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;font-weight:700;box-shadow:0 2px 10px var(--accent-glow)}.brand-title{font-family:var(--font-heading);font-size:1.25rem;font-weight:700;color:var(--text-primary);letter-spacing:-.02em}.brand-subtitle{font-size:.75rem;color:var(--text-muted);font-weight:500}.navbar-actions{display:flex;align-items:center;gap:12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:8px 16px;font-size:.875rem;font-weight:500;border-radius:var(--radius-md);border:1px solid transparent;cursor:pointer;transition:all .2s ease;white-space:nowrap}.btn-primary{background-color:var(--primary-btn-bg);color:var(--primary-btn-text);box-shadow:0 2px 8px var(--accent-glow)}.btn-primary:hover{background-color:var(--accent-hover);transform:translateY(-1px);box-shadow:0 4px 12px var(--accent-glow)}.btn-secondary{background-color:var(--bg-card);border-color:var(--border-color);color:var(--text-primary)}.btn-secondary:hover{background-color:var(--bg-card-hover);border-color:var(--text-muted)}.btn-danger{background-color:#ef4444;color:#fff}.btn-danger:hover{background-color:#dc2626}.btn-sm{padding:6px 12px;font-size:.8rem}.btn-icon-only{padding:8px;border-radius:var(--radius-md)}.main-container{display:flex;flex:1;max-width:1700px;margin:0 auto;width:100%;padding:20px;gap:24px}.form-column{flex:1;min-width:0;display:flex;flex-direction:column;gap:16px}.preview-column{flex:1;min-width:0;display:flex;flex-direction:column;position:sticky;top:76px;height:calc(100vh - 96px)}.card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);padding:20px;box-shadow:var(--shadow-sm);transition:border-color .2s ease,box-shadow .2s ease}.card-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.card-title{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-size:1.05rem;font-weight:600;color:var(--text-primary)}.card-title-icon{color:var(--accent-primary)}.form-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group.full-width{grid-column:span 2}.form-label{font-size:.85rem;font-weight:600;color:var(--text-secondary);display:flex;align-items:center;justify-content:space-between}.required-badge{color:#ef4444;margin-left:2px}.form-control{width:100%;padding:10px 14px;font-family:var(--font-sans);font-size:.9rem;background-color:var(--bg-card);color:var(--text-primary);border:1px solid var(--border-color);border-radius:var(--radius-md);outline:none;transition:border-color .2s ease,box-shadow .2s ease}.form-control:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px var(--accent-glow)}textarea.form-control{resize:vertical;min-height:80px}.preset-pills{display:flex;gap:8px;flex-wrap:wrap}.preset-pill{padding:8px 14px;border-radius:var(--radius-full);border:1px solid var(--border-color);background-color:var(--bg-card);color:var(--text-secondary);font-size:.85rem;font-weight:500;cursor:pointer;display:flex;align-items:center;gap:8px;transition:all .2s ease}.preset-pill:hover{border-color:var(--accent-primary);color:var(--text-primary)}.preset-pill.active{background-color:var(--accent-light);border-color:var(--accent-primary);color:var(--accent-primary);font-weight:600}.preset-color-dot{width:12px;height:12px;border-radius:50%;display:inline-block}.schedule-list{display:flex;flex-direction:column;gap:12px}.schedule-item{display:flex;align-items:flex-start;gap:12px;padding:12px;background-color:var(--bg-main);border:1px solid var(--border-color);border-radius:var(--radius-md);transition:border-color .2s ease}.schedule-item:hover{border-color:var(--accent-primary)}.schedule-drag-handle{display:flex;flex-direction:column;gap:2px;color:var(--text-muted);cursor:grab;padding-top:8px}.schedule-inputs{flex:1;display:flex;flex-direction:column;gap:8px}.schedule-row-top{display:grid;grid-template-columns:140px 1fr;gap:8px}.toggle-wrapper{display:flex;align-items:center;gap:10px;cursor:pointer}.toggle-switch{width:44px;height:24px;background-color:var(--border-color);border-radius:12px;position:relative;transition:background-color .2s ease}.toggle-switch.active{background-color:var(--accent-primary)}.toggle-slider{width:18px;height:18px;background-color:#fff;border-radius:50%;position:absolute;top:3px;left:3px;transition:transform .2s ease}.toggle-switch.active .toggle-slider{transform:translate(20px)}.preview-card{display:flex;flex-direction:column;height:100%;background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-md)}.preview-toolbar{padding:12px 16px;background-color:var(--bg-card-hover);border-bottom:1px solid var(--border-color);display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}.preview-toolbar-group{display:flex;align-items:center;gap:8px}.preview-subject-bar{padding:12px 20px;background-color:var(--bg-card);border-bottom:1px solid var(--border-color);display:flex;align-items:center;gap:12px}.subject-label{font-size:.8rem;font-weight:700;color:var(--text-muted);text-transform:uppercase}.subject-text{font-size:.95rem;font-weight:600;color:var(--text-primary);flex:1}.preview-body-container{flex:1;overflow-y:auto;padding:24px;background-color:#fff;color:#334155}.outlook-mock{max-width:660px;margin:0 auto;background:#fff;color:#334155;box-shadow:0 1px 3px #0000000d;border-radius:6px;border:1px solid #e2e8f0;padding:24px}.editable-area{outline:none;border:1px dashed var(--accent-primary);padding:12px;border-radius:6px;background-color:#fafafa}.toast-container{position:fixed;bottom:24px;right:24px;z-index:100;display:flex;flex-direction:column;gap:10px}.toast{display:flex;align-items:center;gap:12px;padding:12px 20px;background-color:#1e293b;color:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:.9rem;font-weight:500;animation:slideIn .3s cubic-bezier(.16,1,.3,1)}.toast-success{border-left:4px solid #10b981}.toast-error{border-left:4px solid #ef4444}@keyframes slideIn{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width: 1024px){.main-container{flex-direction:column}.preview-column{position:static;height:auto;min-height:500px}}@media (max-width: 640px){.form-grid{grid-template-columns:1fr}.form-group.full-width{grid-column:span 1}.schedule-row-top{grid-template-columns:1fr}.navbar{padding:12px 16px}.preset-pills{flex-direction:column}}