/* ============================================================
   PAD Icon System — Minimal, Flat, Consistent
   Inline SVG as CSS background-image (no external dependency)
   ============================================================ */

.icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
}
.icon-lg { width: 24px; height: 24px; }
.icon-xl { width: 32px; height: 32px; }
.icon-2xl { width: 40px; height: 40px; }

/* Stroke color via CSS filter — default: gray-600 */
.icon { filter: brightness(0) saturate(100%) invert(31%) sepia(10%) saturate(700%) hue-rotate(190deg) brightness(95%); }
.icon-white { filter: brightness(0) invert(1); }
.icon-primary { filter: brightness(0) saturate(100%) invert(35%) sepia(90%) saturate(1000%) hue-rotate(200deg) brightness(100%); }
.icon-muted { filter: brightness(0) saturate(100%) invert(60%) sepia(5%) saturate(500%) hue-rotate(190deg) brightness(90%); }

/* --- Navigation & UI --- */
.icon-home { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 9l9-7 9 7v11a2 2 0 01-2 2H5a2 2 0 01-2-2z'/%3E%3Cpolyline points='9 22 9 12 15 12 15 22'/%3E%3C/svg%3E"); }
.icon-news { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 22h16a2 2 0 002-2V4a2 2 0 00-2-2H8a2 2 0 00-2 2v16a2 2 0 01-2 2zm0 0a2 2 0 01-2-2v-9c0-1.1.9-2 2-2h2'/%3E%3Cline x1='10' y1='6' x2='18' y2='6'/%3E%3Cline x1='10' y1='10' x2='18' y2='10'/%3E%3Cline x1='10' y1='14' x2='14' y2='14'/%3E%3C/svg%3E"); }
.icon-chat { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15a2 2 0 01-2 2H7l-4 4V5a2 2 0 012-2h14a2 2 0 012 2z'/%3E%3C/svg%3E"); }
.icon-bell { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 8A6 6 0 006 8c0 7-3 9-3 9h18s-3-2-3-9'/%3E%3Cpath d='M13.73 21a2 2 0 01-3.46 0'/%3E%3C/svg%3E"); }
.icon-user { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M20 21v-2a4 4 0 00-4-4H8a4 4 0 00-4 4v2'/%3E%3Ccircle cx='12' cy='7' r='4'/%3E%3C/svg%3E"); }
.icon-users { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M17 21v-2a4 4 0 00-4-4H5a4 4 0 00-4 4v2'/%3E%3Ccircle cx='9' cy='7' r='4'/%3E%3Cpath d='M23 21v-2a4 4 0 00-3-3.87'/%3E%3Cpath d='M16 3.13a4 4 0 010 7.75'/%3E%3C/svg%3E"); }
.icon-folder { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 19a2 2 0 01-2 2H4a2 2 0 01-2-2V5a2 2 0 012-2h5l2 3h9a2 2 0 012 2z'/%3E%3C/svg%3E"); }
.icon-tasks { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M9 11l3 3L22 4'/%3E%3Cpath d='M21 12v7a2 2 0 01-2 2H5a2 2 0 01-2-2V5a2 2 0 012-2h11'/%3E%3C/svg%3E"); }
.icon-data { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2'/%3E%3Cline x1='3' y1='9' x2='21' y2='9'/%3E%3Cline x1='3' y1='15' x2='21' y2='15'/%3E%3Cline x1='9' y1='3' x2='9' y2='21'/%3E%3C/svg%3E"); }
.icon-phone { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 16.92v3a2 2 0 01-2.18 2 19.79 19.79 0 01-8.63-3.07A19.5 19.5 0 013.07 9.8 19.79 19.79 0 01.12 1.18 2 2 0 012.11 0h3a2 2 0 012 1.72c.127.96.361 1.903.7 2.81a2 2 0 01-.45 2.11L6.09 7.91a16 16 0 006 6l1.27-1.27a2 2 0 012.11-.45c.907.339 1.85.573 2.81.7A2 2 0 0122 16.92z'/%3E%3C/svg%3E"); }
.icon-settings { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='3'/%3E%3Cpath d='M19.4 15a1.65 1.65 0 00.33 1.82l.06.06a2 2 0 010 2.83 2 2 0 01-2.83 0l-.06-.06a1.65 1.65 0 00-1.82-.33 1.65 1.65 0 00-1 1.51V21a2 2 0 01-4 0v-.09A1.65 1.65 0 009 19.4a1.65 1.65 0 00-1.82.33l-.06.06a2 2 0 01-2.83-2.83l.06-.06A1.65 1.65 0 004.68 15a1.65 1.65 0 00-1.51-1H3a2 2 0 010-4h.09A1.65 1.65 0 004.6 9a1.65 1.65 0 00-.33-1.82l-.06-.06a2 2 0 012.83-2.83l.06.06A1.65 1.65 0 009 4.68a1.65 1.65 0 001-1.51V3a2 2 0 014 0v.09a1.65 1.65 0 001 1.51 1.65 1.65 0 001.82-.33l.06-.06a2 2 0 012.83 2.83l-.06.06A1.65 1.65 0 0019.4 9a1.65 1.65 0 001.51 1H21a2 2 0 010 4h-.09a1.65 1.65 0 00-1.51 1z'/%3E%3C/svg%3E"); }
.icon-shield { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M12 22s8-4 8-10V5l-8-3-8 3v7c0 6 8 10 8 10z'/%3E%3C/svg%3E"); }
.icon-refresh { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='23 4 23 10 17 10'/%3E%3Cpolyline points='1 20 1 14 7 14'/%3E%3Cpath d='M3.51 9a9 9 0 0114.85-3.36L23 10M1 14l4.64 4.36A9 9 0 0020.49 15'/%3E%3C/svg%3E"); }
.icon-globe { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='2' y1='12' x2='22' y2='12'/%3E%3Cpath d='M12 2a15.3 15.3 0 014 10 15.3 15.3 0 01-4 10 15.3 15.3 0 01-4-10 15.3 15.3 0 014-10z'/%3E%3C/svg%3E"); }
.icon-bar-chart { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='12' y1='20' x2='12' y2='10'/%3E%3Cline x1='18' y1='20' x2='18' y2='4'/%3E%3Cline x1='6' y1='20' x2='6' y2='16'/%3E%3C/svg%3E"); }
.icon-plus { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round'%3E%3Cline x1='12' y1='5' x2='12' y2='19'/%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3C/svg%3E"); }
.icon-search { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='11' cy='11' r='8'/%3E%3Cline x1='21' y1='21' x2='16.65' y2='16.65'/%3E%3C/svg%3E"); }
.icon-edit { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M11 4H4a2 2 0 00-2 2v14a2 2 0 002 2h14a2 2 0 002-2v-7'/%3E%3Cpath d='M18.5 2.5a2.121 2.121 0 013 3L12 15l-4 1 1-4 9.5-9.5z'/%3E%3C/svg%3E"); }
.icon-trash { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='3 6 5 6 21 6'/%3E%3Cpath d='M19 6v14a2 2 0 01-2 2H7a2 2 0 01-2-2V6m3 0V4a2 2 0 012-2h4a2 2 0 012 2v2'/%3E%3C/svg%3E"); }
.icon-download { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 01-2 2H5a2 2 0 01-2-2v-4'/%3E%3Cpolyline points='7 10 12 15 17 10'/%3E%3Cline x1='12' y1='15' x2='12' y2='3'/%3E%3C/svg%3E"); }
.icon-upload { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 15v4a2 2 0 01-2 2H5a2 2 0 01-2-2v-4'/%3E%3Cpolyline points='17 8 12 3 7 8'/%3E%3Cline x1='12' y1='3' x2='12' y2='15'/%3E%3C/svg%3E"); }
.icon-logout { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M15 3h4a2 2 0 012 2v14a2 2 0 01-2 2h-4'/%3E%3Cpolyline points='8 17 3 12 8 7'/%3E%3Cline x1='3' y1='12' x2='15' y2='12'/%3E%3C/svg%3E"); }
.icon-external { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 13v6a2 2 0 01-2 2H5a2 2 0 01-2-2V8a2 2 0 012-2h6'/%3E%3Cpolyline points='15 3 21 3 21 9'/%3E%3Cline x1='10' y1='14' x2='21' y2='3'/%3E%3C/svg%3E"); }
.icon-menu { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round'%3E%3Cline x1='3' y1='12' x2='21' y2='12'/%3E%3Cline x1='3' y1='6' x2='21' y2='6'/%3E%3Cline x1='3' y1='18' x2='21' y2='18'/%3E%3C/svg%3E"); }
.icon-arrow-right { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='5' y1='12' x2='19' y2='12'/%3E%3Cpolyline points='12 5 19 12 12 19'/%3E%3C/svg%3E"); }
.icon-arrow-left { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='19' y1='12' x2='5' y2='12'/%3E%3Cpolyline points='12 19 5 12 12 5'/%3E%3C/svg%3E"); }
.icon-send { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cline x1='22' y1='2' x2='11' y2='13'/%3E%3Cpolygon points='22 2 15 22 11 13 2 9 22 2'/%3E%3C/svg%3E"); }
.icon-image { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2' ry='2'/%3E%3Ccircle cx='8.5' cy='8.5' r='1.5'/%3E%3Cpolyline points='21 15 16 10 5 21'/%3E%3C/svg%3E"); }
.icon-check { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E"); }
.icon-x { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round'%3E%3Cline x1='18' y1='6' x2='6' y2='18'/%3E%3Cline x1='6' y1='6' x2='18' y2='18'/%3E%3C/svg%3E"); }
.icon-clock { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpolyline points='12 6 12 12 16 14'/%3E%3C/svg%3E"); }
.icon-alert { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10.29 3.86L1.82 18a2 2 0 001.71 3h16.94a2 2 0 001.71-3L13.71 3.86a2 2 0 00-3.42 0z'/%3E%3Cline x1='12' y1='9' x2='12' y2='13'/%3E%3Cline x1='12' y1='17' x2='12.01' y2='17'/%3E%3C/svg%3E"); }
.icon-star { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'/%3E%3C/svg%3E"); }
.icon-mobile { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='5' y='2' width='14' height='20' rx='2' ry='2'/%3E%3Cline x1='12' y1='18' x2='12.01' y2='18'/%3E%3C/svg%3E"); }
.icon-check-circle { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M22 11.08V12a10 10 0 11-5.93-9.14'/%3E%3Cpolyline points='22 4 12 14.01 9 11.01'/%3E%3C/svg%3E"); }
.icon-map { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='1 6 1 22 8 18 16 22 23 18 23 2 16 6 8 2 1 6'/%3E%3Cline x1='8' y1='2' x2='8' y2='18'/%3E%3Cline x1='16' y1='6' x2='16' y2='22'/%3E%3C/svg%3E"); }
.icon-layers { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='12 2 2 7 12 12 22 7 12 2'/%3E%3Cpolyline points='2 17 12 22 22 17'/%3E%3Cpolyline points='2 12 12 17 22 12'/%3E%3C/svg%3E"); }
.icon-activity { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='22 12 18 12 15 21 9 3 6 12 2 12'/%3E%3C/svg%3E"); }
.icon-zap { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='13 2 3 14 12 14 11 22 21 10 12 10 13 2'/%3E%3C/svg%3E"); }
.icon-link { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M10 13a5 5 0 007.54.54l3-3a5 5 0 00-7.07-7.07l-1.72 1.71'/%3E%3Cpath d='M14 11a5 5 0 00-7.54-.54l-3 3a5 5 0 007.07 7.07l1.71-1.71'/%3E%3C/svg%3E"); }
.icon-filter { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolygon points='22 3 2 3 10 12.46 10 19 14 21 14 12.46 22 3'/%3E%3C/svg%3E"); }
.icon-grid { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='7' height='7'/%3E%3Crect x='14' y='3' width='7' height='7'/%3E%3Crect x='14' y='14' width='7' height='7'/%3E%3Crect x='3' y='14' width='7' height='7'/%3E%3C/svg%3E"); }
.icon-announce { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M3 11l19-9-9 19-2-8-8-2z'/%3E%3C/svg%3E"); }
/* Tab icons — groups / channels / contacts */
.icon-users-group { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='9' cy='7' r='3'/%3E%3Cpath d='M13 21v-1a5 5 0 00-5-5H5a5 5 0 00-5 5v1'/%3E%3Ccircle cx='18' cy='8' r='2.5'/%3E%3Cpath d='M24 21v-1a4 4 0 00-4-4h-1'/%3E%3C/svg%3E"); }
.icon-megaphone { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M18 8A6 6 0 006 8'/%3E%3Cpath d='M6 8v5a6 6 0 001.5 4l1.5 2h6l1.5-2A6 6 0 0018 13V8'/%3E%3Cpath d='M12 2v2'/%3E%3Cline x1='4.93' y1='4.93' x2='6.34' y2='6.34'/%3E%3Cline x1='19.07' y1='4.93' x2='17.66' y2='6.34'/%3E%3C/svg%3E"); }
.icon-contact-book { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='4' y='2' width='16' height='20' rx='2'/%3E%3Ccircle cx='12' cy='10' r='3'/%3E%3Cpath d='M8 18a4 4 0 018 0'/%3E%3Cline x1='2' y1='7' x2='4' y2='7'/%3E%3Cline x1='2' y1='12' x2='4' y2='12'/%3E%3Cline x1='2' y1='17' x2='4' y2='17'/%3E%3C/svg%3E"); }
.icon-layout { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='3' width='18' height='18' rx='2' ry='2'/%3E%3Cline x1='3' y1='9' x2='21' y2='9'/%3E%3Cline x1='9' y1='21' x2='9' y2='9'/%3E%3C/svg%3E"); }
.icon-key { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M21 2l-2 2m-7.61 7.61a5.5 5.5 0 11-7.778 7.778 5.5 5.5 0 017.777-7.777zm0 0L15.5 7.5m0 0l3 3L22 7l-3-3m-3.5 3.5L19 4'/%3E%3C/svg%3E"); }
.icon-lock { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='3' y='11' width='18' height='11' rx='2' ry='2'/%3E%3Cpath d='M7 11V7a5 5 0 0110 0v4'/%3E%3C/svg%3E"); }
.icon-info { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cline x1='12' y1='16' x2='12' y2='12'/%3E%3Cline x1='12' y1='8' x2='12.01' y2='8'/%3E%3C/svg%3E"); }
.icon-form { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M16 4h2a2 2 0 012 2v14a2 2 0 01-2 2H6a2 2 0 01-2-2V6a2 2 0 012-2h2'/%3E%3Crect x='8' y='2' width='8' height='4' rx='1' ry='1'/%3E%3Cline x1='8' y1='10' x2='16' y2='10'/%3E%3Cline x1='8' y1='14' x2='16' y2='14'/%3E%3Cline x1='8' y1='18' x2='12' y2='18'/%3E%3C/svg%3E"); }

/* Colored variants (filled) */
.icon-red { filter: brightness(0) saturate(100%) invert(21%) sepia(90%) saturate(2000%) hue-rotate(340deg) brightness(90%); }
.icon-green { filter: brightness(0) saturate(100%) invert(38%) sepia(50%) saturate(600%) hue-rotate(110deg) brightness(95%); }
.icon-yellow { filter: brightness(0) saturate(100%) invert(70%) sepia(80%) saturate(400%) hue-rotate(10deg) brightness(100%); }
.icon-copy { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' fill='none' stroke='%23333' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='9' y='9' width='13' height='13' rx='2' ry='2'/%3E%3Cpath d='M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1'/%3E%3C/svg%3E"); }