Indras Materia Magic.
A library of surfaces.

.mat-glass-clear {
  background: linear-gradient(135deg, rgba(255,255,255,0.14), rgba(255,255,255,0.04));
  border: 1px solid rgba(255,255,255,0.22);
  backdrop-filter: blur(14px) saturate(140%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.3),
    0 10px 30px rgba(0,0,0,0.25);
}

.mat-glass-frost {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.18);
  backdrop-filter: blur(30px) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.35),
    0 20px 40px rgba(0,0,0,0.35);
}

.mat-glass-tint {
  background: linear-gradient(135deg, rgba(80,180,255,0.28), rgba(140,90,255,0.18));
  border: 1px solid rgba(180,220,255,0.35);
  backdrop-filter: blur(18px) saturate(180%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.4),
    0 12px 32px rgba(60,90,200,0.4);
}

.mat-glass-iridescent {
  background: linear-gradient(135deg,
    rgba(255,150,220,0.25),
    rgba(120,200,255,0.2) 45%,
    rgba(180,255,200,0.22));
  border: 1px solid rgba(255,255,255,0.3);
  backdrop-filter: blur(20px) saturate(220%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.4),
    0 14px 36px rgba(200,120,255,0.35);
}

.mat-glass-smoke {
  background: linear-gradient(135deg, rgba(20,22,30,0.55), rgba(10,10,15,0.7));
  border: 1px solid rgba(255,255,255,0.08);
  backdrop-filter: blur(16px) saturate(120%);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 14px 36px rgba(0,0,0,0.5);
}

.mat-crystal {
  background: linear-gradient(120deg,
    rgba(255,255,255,0.35) 0%,
    rgba(255,255,255,0.05) 40%,
    rgba(255,255,255,0.28) 60%,
    rgba(255,255,255,0.08) 100%);
  border: 1px solid rgba(255,255,255,0.5);
  backdrop-filter: blur(8px);
  box-shadow:
    inset 0 2px 0 rgba(255,255,255,0.6),
    inset 0 -1px 0 rgba(255,255,255,0.15),
    0 18px 40px rgba(140,200,255,0.35);
}

.mat-gloss-white {
  background: linear-gradient(180deg, #ffffff 0%, #f2f4f8 45%, #dbe0ea 100%);
  border: 1px solid rgba(255,255,255,0.9);
  box-shadow:
    inset 0 2px 3px rgba(255,255,255,0.95),
    inset 0 -8px 20px rgba(180,190,210,0.5),
    0 12px 28px rgba(20,30,60,0.35);
  color: #1a1e2b;
}

.mat-gloss-black {
  background: linear-gradient(180deg, #2a2d36 0%, #0a0b10 55%, #16181f 100%);
  border: 1px solid rgba(255,255,255,0.08);
  box-shadow:
    inset 0 2px 2px rgba(255,255,255,0.35),
    inset 0 -20px 30px rgba(0,0,0,0.6),
    0 16px 36px rgba(0,0,0,0.55);
}

.mat-wet {
  background: linear-gradient(160deg,
    rgba(255,255,255,0.4) 0%,
    rgba(120,180,255,0.25) 30%,
    rgba(40,80,180,0.35) 100%);
  border: 1px solid rgba(255,255,255,0.4);
  box-shadow:
    inset 0 3px 6px rgba(255,255,255,0.7),
    inset 0 -12px 24px rgba(20,40,120,0.5),
    0 14px 30px rgba(30,60,160,0.45);
}

.mat-pearl {
  background: radial-gradient(ellipse at 30% 25%,
    #ffffff 0%, #f4e8f0 30%, #e0d0e6 60%, #c8bdd8 100%);
  border: 1px solid rgba(255,255,255,0.8);
  box-shadow:
    inset 0 2px 4px rgba(255,255,255,0.9),
    0 12px 28px rgba(150,130,180,0.4);
  color: #2a2540;
}

.mat-paper {
  background: #f4f0e6;
  border: 1px solid #e2dccc;
  box-shadow:
    inset 0 1px 0 #ffffff,
    0 6px 14px rgba(60,50,30,0.15);
  color: #2b2620;
}

.mat-chalk {
  background: #1a1c22;
  background-image:
    radial-gradient(circle at 20% 30%, rgba(255,255,255,0.04) 0%, transparent 40%),
    radial-gradient(circle at 80% 70%, rgba(255,255,255,0.03) 0%, transparent 45%);
  border: 1px solid rgba(255,255,255,0.06);
  box-shadow: inset 0 0 40px rgba(0,0,0,0.35);
}

.mat-felt {
  background: #6b2d3a;
  background-image:
    radial-gradient(circle at 10% 20%, rgba(0,0,0,0.15) 0%, transparent 30%),
    radial-gradient(circle at 90% 80%, rgba(255,255,255,0.05) 0%, transparent 30%);
  border: 1px solid rgba(0,0,0,0.25);
  box-shadow:
    inset 0 2px 8px rgba(0,0,0,0.35),
    0 6px 16px rgba(0,0,0,0.3);
}

.mat-suede {
  background: linear-gradient(160deg, #8b6f47 0%, #6b4f2b 100%);
  border: 1px solid rgba(0,0,0,0.3);
  box-shadow:
    inset 0 3px 10px rgba(255,220,180,0.15),
    inset 0 -3px 10px rgba(0,0,0,0.3),
    0 8px 20px rgba(0,0,0,0.35);
  color: #f4ead8;
}

.mat-velvet {
  background: radial-gradient(ellipse at 50% 30%,
    #6b1a4a 0%, #3d0a2a 70%, #1f0416 100%);
  border: 1px solid rgba(120,20,80,0.4);
  box-shadow:
    inset 0 4px 20px rgba(255,120,200,0.15),
    inset 0 -6px 20px rgba(0,0,0,0.5),
    0 12px 30px rgba(60,10,40,0.6);
}

.mat-silk {
  background: linear-gradient(115deg,
    #d4b896 0%, #f0dcbe 30%, #c8a678 55%, #eacf9e 80%, #b89058 100%);
  border: 1px solid rgba(255,240,210,0.5);
  box-shadow:
    inset 0 2px 6px rgba(255,255,255,0.5),
    0 10px 24px rgba(120,80,30,0.35);
  color: #3a2a10;
}

.mat-leather {
  background-image:
    radial-gradient(circle at 25% 25%, rgba(255,180,120,0.08) 0%, transparent 8%),
    radial-gradient(circle at 75% 60%, rgba(0,0,0,0.3) 0%, transparent 10%),
    radial-gradient(circle at 40% 80%, rgba(255,180,120,0.06) 0%, transparent 6%),
    linear-gradient(160deg, #4a2a1a 0%, #2e1810 100%);
  border: 1px solid rgba(0,0,0,0.5);
  box-shadow:
    inset 0 2px 4px rgba(255,180,120,0.15),
    inset 0 -4px 8px rgba(0,0,0,0.4),
    0 10px 24px rgba(0,0,0,0.5);
  color: #e8c9a0;
}

.mat-denim {
  background:
    repeating-linear-gradient(45deg,
      #2a4a7a 0px, #2a4a7a 2px,
      #1e3a66 2px, #1e3a66 4px),
    #234170;
  border: 1px solid rgba(0,0,0,0.4);
  box-shadow:
    inset 0 2px 6px rgba(255,255,255,0.1),
    0 8px 18px rgba(0,0,0,0.35);
  color: #e6ecf6;
}

.mat-rubber {
  background: linear-gradient(180deg, #26282e 0%, #16181c 100%);
  border: 1px solid rgba(0,0,0,0.6);
  box-shadow:
    inset 0 2px 4px rgba(255,255,255,0.06),
    inset 0 -2px 6px rgba(0,0,0,0.5),
    0 6px 14px rgba(0,0,0,0.45);
}

.mat-latex {
  background:
    radial-gradient(ellipse at 30% 20%, rgba(255,255,255,0.5) 0%, transparent 40%),
    #0f1015;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow:
    inset 0 -8px 20px rgba(0,0,0,0.6),
    0 12px 26px rgba(0,0,0,0.55);
}

.mat-metal-brushed {
  background:
    repeating-linear-gradient(90deg,
      rgba(255,255,255,0.05) 0px,
      rgba(0,0,0,0.05) 1px,
      transparent 1px, transparent 2px),
    linear-gradient(180deg, #c8ccd2 0%, #8a8f96 50%, #b4b9bf 100%);
  border: 1px solid rgba(0,0,0,0.25);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.6),
    0 8px 20px rgba(0,0,0,0.35);
  color: #1a1c22;
}

.mat-chrome {
  background: linear-gradient(180deg,
    #f4f6f8 0%, #a8b0ba 20%, #4a5060 50%,
    #a8b0ba 80%, #f4f6f8 100%);
  border: 1px solid rgba(255,255,255,0.6);
  box-shadow:
    inset 0 2px 4px rgba(255,255,255,0.9),
    0 12px 28px rgba(0,0,0,0.45);
  color: #0a0c12;
}

.mat-gold {
  background: linear-gradient(180deg,
    #fff2b8 0%, #e6bf5c 25%, #a67820 55%,
    #d9a648 80%, #fdefb2 100%);
  border: 1px solid #b08b32;
  box-shadow:
    inset 0 2px 3px rgba(255,240,180,0.9),
    inset 0 -3px 8px rgba(80,50,10,0.4),
    0 10px 26px rgba(140,100,20,0.5);
  color: #2a1c05;
}

.mat-copper {
  background: linear-gradient(160deg,
    #c87a4a 0%, #8a4a2a 45%,
    #4a8a6a 90%, #6ab090 100%);
  border: 1px solid rgba(0,0,0,0.35);
  box-shadow:
    inset 0 1px 2px rgba(255,220,180,0.6),
    inset 0 -4px 10px rgba(0,0,0,0.4),
    0 10px 24px rgba(60,30,10,0.5);
  color: #f4e6d0;
}

.mat-holographic {
  background: linear-gradient(115deg,
    #ff6ec7 0%, #ffd86e 20%, #6effb8 40%,
    #6ec7ff 60%, #b86eff 80%, #ff6ec7 100%);
  background-size: 200% 100%;
  border: 1px solid rgba(255,255,255,0.5);
  box-shadow:
    inset 0 2px 6px rgba(255,255,255,0.7),
    0 12px 30px rgba(180,100,220,0.45);
  color: #1a0a2a;
}

.mat-neon {
  background: #0a0a14;
  border: 1.5px solid #6ef0ff;
  box-shadow:
    inset 0 0 20px rgba(110,240,255,0.25),
    0 0 12px rgba(110,240,255,0.6),
    0 0 30px rgba(110,240,255,0.4),
    0 0 60px rgba(110,240,255,0.25);
  color: #a8f6ff;
}

.mat-aurora {
  background: linear-gradient(135deg,
    #0a1a3a 0%, #1a4a6e 30%,
    #2ea77a 60%, #6ef0a8 100%);
  border: 1px solid rgba(180,255,220,0.25);
  box-shadow:
    inset 0 2px 8px rgba(180,255,220,0.2),
    0 14px 32px rgba(20,80,60,0.5);
}

.mat-neumorph-raised {
  background: #e2e6ee;
  border: none;
  box-shadow:
    8px 8px 20px #b8bcc4,
    -8px -8px 20px #ffffff;
  color: #3a3e48;
}

.mat-neumorph-inset {
  background: #e2e6ee;
  border: none;
  box-shadow:
    inset 6px 6px 14px #b8bcc4,
    inset -6px -6px 14px #ffffff;
  color: #3a3e48;
}

.mat-concrete {
  background-image:
    radial-gradient(circle at 20% 30%, rgba(0,0,0,0.12) 0%, transparent 8%),
    radial-gradient(circle at 70% 60%, rgba(255,255,255,0.08) 0%, transparent 10%),
    radial-gradient(circle at 45% 85%, rgba(0,0,0,0.1) 0%, transparent 7%),
    linear-gradient(160deg, #9a9da3 0%, #74777d 100%);
  border: 1px solid rgba(0,0,0,0.2);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.25),
    0 8px 20px rgba(0,0,0,0.35);
  color: #1a1c22;
}

.mat-marble {
  background:
    linear-gradient(115deg,
      transparent 0%,
      rgba(180,180,200,0.4) 20%,
      transparent 25%, transparent 55%,
      rgba(140,140,170,0.3) 62%,
      transparent 68%),
    linear-gradient(180deg, #f4f2ee 0%, #e0dcd4 100%);
  border: 1px solid rgba(0,0,0,0.1);
  box-shadow:
    inset 0 2px 4px rgba(255,255,255,0.7),
    0 10px 24px rgba(0,0,0,0.25);
  color: #2a2820;
}

.mat-carbon {
  background:
    repeating-linear-gradient(45deg,
      #1a1c22 0px, #1a1c22 4px,
      #0e1014 4px, #0e1014 8px),
    repeating-linear-gradient(-45deg,
      rgba(255,255,255,0.05) 0px,
      rgba(255,255,255,0.05) 4px,
      transparent 4px, transparent 8px);
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 10px 24px rgba(0,0,0,0.5);
  color: #d0d4dc;
}

.mat-jade {
  background: radial-gradient(ellipse at 30% 20%,
    #a8e6c8 0%, #4a9a78 50%, #1a5a3e 100%);
  border: 1px solid rgba(180,240,210,0.35);
  box-shadow:
    inset 0 2px 8px rgba(200,255,220,0.35),
    inset 0 -4px 10px rgba(10,40,25,0.5),
    0 12px 28px rgba(20,80,55,0.5);
  color: #eafff2;
}