/* Button Demo Section */
.button-demo-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 24px;
    box-shadow: var(--shadow-xl);
    margin-top: 40px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.button-demo-section h2 {
    text-align: center;
    font-size: 2rem;
    font-weight: 800;
    color: var(--dark-gray);
    margin-bottom: 10px;
}

.demo-subtitle {
    text-align: center;
    color: #666;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.button-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 25px;
}

.button-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.btn-number {
    background: var(--dark-gray);
    color: white;
    padding: 4px 12px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 0.85rem;
}

.demo-btn {
    width: 100%;
    padding: 14px 24px;
    font-size: 0.95rem;
    font-weight: 700;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

/* Style 1 - Glossy */
.btn-1 {
    background: linear-gradient(180deg, #ff5757 0%, #d32f2f 100%);
    color: white;
    border-radius: 12px;
    box-shadow: 0 8px 16px rgba(211, 47, 47, 0.3), inset 0 -2px 10px rgba(0,0,0,0.2), inset 0 2px 10px rgba(255,255,255,0.2);
}
.btn-1:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 24px rgba(211, 47, 47, 0.4);
}

/* Style 2 - Neon Glow */
.btn-2 {
    background: #000;
    color: #00ff00;
    border: 2px solid #00ff00;
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 255, 0, 0.5);
    text-shadow: 0 0 10px #00ff00;
}
.btn-2:hover {
    box-shadow: 0 0 30px rgba(0, 255, 0, 0.8), inset 0 0 20px rgba(0, 255, 0, 0.3);
}

/* Style 3 - Glassmorphism */
.btn-3 {
    background: rgba(237, 28, 36, 0.2);
    backdrop-filter: blur(10px);
    color: #d32f2f;
    border: 2px solid rgba(237, 28, 36, 0.5);
    border-radius: 16px;
    font-weight: 800;
}
.btn-3:hover {
    background: rgba(237, 28, 36, 0.3);
    border-color: #d32f2f;
}

/* Style 4 - 3D Press */
.btn-4 {
    background: linear-gradient(180deg, #ff4444 0%, #cc0000 100%);
    color: white;
    border-radius: 10px;
    box-shadow: 0 6px 0 #990000, 0 10px 20px rgba(0,0,0,0.3);
}
.btn-4:hover {
    transform: translateY(3px);
    box-shadow: 0 3px 0 #990000, 0 5px 10px rgba(0,0,0,0.3);
}

/* Style 5 - Neumorphism Light */
.btn-5 {
    background: #e8eef5;
    color: #d32f2f;
    border-radius: 20px;
    box-shadow: 8px 8px 16px #d1d9e6, -8px -8px 16px #ffffff;
    border: none;
    font-weight: 800;
}
.btn-5:hover {
    box-shadow: inset 4px 4px 8px #d1d9e6, inset -4px -4px 8px #ffffff;
}

/* Style 6 - Gradient Border */
.btn-6 {
    background: white;
    color: #d32f2f;
    border-radius: 12px;
    position: relative;
    border: 3px solid transparent;
    background-clip: padding-box;
    font-weight: 800;
}
.btn-6::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 12px;
    background: linear-gradient(135deg, #ff0000, #ff6b6b, #ff0000);
    z-index: -1;
}
.btn-6:hover {
    background: linear-gradient(135deg, #ff0000, #ff6b6b);
    color: white;
}

/* Style 7 - Shiny Metal */
.btn-7 {
    background: linear-gradient(180deg, #f5f5f5 0%, #c0c0c0 50%, #a0a0a0 100%);
    color: #333;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.8);
    text-shadow: 0 1px 0 rgba(255,255,255,0.5);
}
.btn-7:hover {
    background: linear-gradient(180deg, #ffffff 0%, #d0d0d0 50%, #b0b0b0 100%);
}

/* Style 8 - Outline Pulse */
.btn-8 {
    background: transparent;
    color: #d32f2f;
    border: 3px solid #d32f2f;
    border-radius: 10px;
    font-weight: 800;
}
.btn-8:hover {
    background: #d32f2f;
    color: white;
    box-shadow: 0 0 0 4px rgba(211, 47, 47, 0.2);
    animation: pulse-border 1s infinite;
}
@keyframes pulse-border {
    0%, 100% { box-shadow: 0 0 0 4px rgba(211, 47, 47, 0.2); }
    50% { box-shadow: 0 0 0 8px rgba(211, 47, 47, 0.1); }
}

/* Style 9 - Skeuomorphic */
.btn-9 {
    background: linear-gradient(180deg, #ff3333 0%, #cc0000 100%);
    color: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2), inset 0 1px 0 rgba(255,255,255,0.3), inset 0 -2px 5px rgba(0,0,0,0.2);
    border: 1px solid #990000;
}
.btn-9:hover {
    background: linear-gradient(180deg, #ff4444 0%, #dd1111 100%);
}

/* Style 10 - Gradient Animated */
.btn-10 {
    background: linear-gradient(270deg, #ff0000, #ff6b6b, #ff0000);
    background-size: 400% 400%;
    color: white;
    border-radius: 12px;
    animation: gradient-shift 3s ease infinite;
}
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}
.btn-10:hover {
    animation-duration: 1s;
}

/* Style 11 - Sharp Modern */
.btn-11 {
    background: #d32f2f;
    color: white;
    border-radius: 0;
    clip-path: polygon(8px 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%, 0 8px);
    font-weight: 800;
}
.btn-11:hover {
    background: #b71c1c;
    transform: scale(1.05);
}

/* Style 12 - Soft Shadow */
.btn-12 {
    background: white;
    color: #d32f2f;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(211, 47, 47, 0.3);
    border: 2px solid #d32f2f;
    font-weight: 800;
}
.btn-12:hover {
    background: #d32f2f;
    color: white;
    transform: translateY(-4px);
    box-shadow: 0 15px 40px rgba(211, 47, 47, 0.4);
}

/* Style 13 - Retro 3D */
.btn-13 {
    background: #ff4444;
    color: white;
    border-radius: 0;
    box-shadow: 5px 5px 0 #990000;
    border: 3px solid #000;
    font-weight: 900;
    text-transform: uppercase;
}
.btn-13:hover {
    transform: translate(2px, 2px);
    box-shadow: 3px 3px 0 #990000;
}

/* Style 14 - Minimal Underline */
.btn-14 {
    background: transparent;
    color: #d32f2f;
    border: none;
    border-bottom: 3px solid #d32f2f;
    border-radius: 0;
    font-weight: 800;
    padding: 14px 24px 11px;
}
.btn-14:hover {
    background: rgba(211, 47, 47, 0.1);
    border-bottom-width: 5px;
    padding-bottom: 9px;
}

/* Style 15 - Bubble */
.btn-15 {
    background: linear-gradient(135deg, #ff6b6b 0%, #d32f2f 100%);
    color: white;
    border-radius: 50px;
    box-shadow: 0 8px 20px rgba(211, 47, 47, 0.4);
}
.btn-15:hover {
    border-radius: 20px;
    box-shadow: 0 12px 30px rgba(211, 47, 47, 0.5);
}

/* Style 16 - Split Color */
.btn-16 {
    background: linear-gradient(90deg, #d32f2f 50%, white 50%);
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    border: 3px solid #d32f2f;
    border-radius: 10px;
    font-weight: 900;
}
.btn-16:hover {
    background: #d32f2f;
    color: white;
    -webkit-text-fill-color: white;
}

/* Style 17 - Raised Card */
.btn-17 {
    background: white;
    color: #d32f2f;
    border-radius: 12px;
    box-shadow: 0 4px 0 #d32f2f, 0 8px 20px rgba(0,0,0,0.2);
    font-weight: 800;
}
.btn-17:hover {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #d32f2f, 0 4px 10px rgba(0,0,0,0.2);
}

/* Style 18 - Glow Border */
.btn-18 {
    background: #d32f2f;
    color: white;
    border-radius: 12px;
    box-shadow: 0 0 0 0 rgba(211, 47, 47, 0.7);
    animation: glow-pulse 2s infinite;
}
@keyframes glow-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(211, 47, 47, 0.7); }
    50% { box-shadow: 0 0 0 15px rgba(211, 47, 47, 0); }
}
.btn-18:hover {
    animation: none;
    box-shadow: 0 0 30px rgba(211, 47, 47, 0.8);
}

/* Style 19 - Diagonal Stripe */
.btn-19 {
    background: repeating-linear-gradient(45deg, #d32f2f, #d32f2f 10px, #b71c1c 10px, #b71c1c 20px);
    color: white;
    border-radius: 10px;
    font-weight: 800;
}
.btn-19:hover {
    background: #d32f2f;
}

/* Style 20 - Holographic */
.btn-20 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 25%, #f093fb 50%, #4facfe 75%, #00f2fe 100%);
    background-size: 400%;
    color: white;
    border-radius: 12px;
    animation: holographic 4s ease infinite;
}
@keyframes holographic {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Style 21 - Cutout Text */
.btn-21 {
    background: #d32f2f;
    color: transparent;
    -webkit-text-stroke: 2px white;
    border-radius: 10px;
    font-weight: 900;
}
.btn-21:hover {
    color: white;
    -webkit-text-stroke: 0;
}

/* Style 22 - Liquid */
.btn-22 {
    background: #d32f2f;
    color: white;
    border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%;
    animation: morph 8s ease-in-out infinite;
}
@keyframes morph {
    0%, 100% { border-radius: 60% 40% 30% 70% / 60% 30% 70% 40%; }
    50% { border-radius: 30% 60% 70% 40% / 50% 60% 30% 60%; }
}
.btn-22:hover {
    animation: morph 2s ease-in-out infinite;
}

/* Style 23 - Layered Shadow */
.btn-23 {
    background: #d32f2f;
    color: white;
    border-radius: 10px;
    box-shadow: 0 2px 0 #b71c1c, 0 4px 0 #8e0000, 0 6px 0 #660000, 0 8px 8px rgba(0,0,0,0.4);
}
.btn-23:hover {
    transform: translateY(4px);
    box-shadow: 0 1px 0 #b71c1c, 0 2px 0 #8e0000, 0 3px 0 #660000, 0 4px 4px rgba(0,0,0,0.4);
}

/* Style 24 - Minimal Modern */
.btn-24 {
    background: #1a1a2e;
    color: white;
    border-radius: 4px;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85rem;
}
.btn-24:hover {
    background: #d32f2f;
    letter-spacing: 2px;
}

/* Style 25 - Double Border */
.btn-25 {
    background: white;
    color: #d32f2f;
    border: 3px solid #d32f2f;
    border-radius: 12px;
    box-shadow: 0 0 0 6px white, 0 0 0 9px #d32f2f;
    font-weight: 800;
}
.btn-25:hover {
    background: #d32f2f;
    color: white;
}

/* Style 26 - Slide Fill */
.btn-26 {
    background: white;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    font-weight: 800;
    z-index: 1;
}
.btn-26::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #d32f2f;
    transition: left 0.4s;
    z-index: -1;
}
.btn-26:hover::before {
    left: 0;
}
.btn-26:hover {
    color: white;
}

/* Style 27 - Pixel Art */
.btn-27 {
    background: #d32f2f;
    color: white;
    border-radius: 0;
    box-shadow: inset -4px -4px 0 rgba(0,0,0,0.3), inset 4px 4px 0 rgba(255,255,255,0.3);
    font-weight: 900;
    font-family: 'Courier New', monospace;
}
.btn-27:hover {
    box-shadow: inset -2px -2px 0 rgba(0,0,0,0.3), inset 2px 2px 0 rgba(255,255,255,0.3);
}

/* Style 28 - Frosted Glass */
.btn-28 {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(20px);
    color: #d32f2f;
    border: 2px solid rgba(211, 47, 47, 0.3);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    font-weight: 800;
}
.btn-28:hover {
    background: rgba(211, 47, 47, 0.2);
    border-color: #d32f2f;
}

/* Style 29 - Embossed */
.btn-29 {
    background: linear-gradient(145deg, #e85d5d, #c92a2a);
    color: white;
    border-radius: 15px;
    box-shadow: 6px 6px 12px #a72020, -6px -6px 12px #ff4040;
    font-weight: 800;
}
.btn-29:hover {
    box-shadow: inset 3px 3px 6px #a72020, inset -3px -3px 6px #ff4040;
}

/* Style 30 - Gradient Shift */
.btn-30 {
    background: linear-gradient(45deg, #d32f2f 0%, #ff6b6b 50%, #d32f2f 100%);
    background-size: 200% 100%;
    color: white;
    border-radius: 12px;
    transition: background-position 0.5s;
}
.btn-30:hover {
    background-position: 100% 0;
}

/* Style 31 - Stacked Paper */
.btn-31 {
    background: white;
    color: #d32f2f;
    border-radius: 8px;
    box-shadow: 0 3px 0 #f5f5f5, 0 6px 0 #e0e0e0, 0 9px 0 #cccccc, 0 12px 20px rgba(0,0,0,0.2);
    border: 2px solid #d32f2f;
    font-weight: 800;
}
.btn-31:hover {
    transform: translateY(6px);
    box-shadow: 0 1px 0 #f5f5f5, 0 2px 0 #e0e0e0, 0 3px 0 #cccccc, 0 6px 10px rgba(0,0,0,0.2);
}

/* Style 32 - Neon Outline */
.btn-32 {
    background: transparent;
    color: #ff0066;
    border: 3px solid #ff0066;
    border-radius: 10px;
    box-shadow: 0 0 10px #ff0066, inset 0 0 10px rgba(255, 0, 102, 0.2);
    font-weight: 800;
}
.btn-32:hover {
    background: #ff0066;
    color: white;
    box-shadow: 0 0 20px #ff0066, 0 0 40px #ff0066;
}

/* Style 33 - Slide Up */
.btn-33 {
    background: white;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 10px;
    position: relative;
    overflow: hidden;
    font-weight: 800;
    z-index: 1;
}
.btn-33::before {
    content: '';
    position: absolute;
    bottom: -100%;
    left: 0;
    width: 100%;
    height: 100%;
    background: #d32f2f;
    transition: bottom 0.4s;
    z-index: -1;
}
.btn-33:hover::before {
    bottom: 0;
}
.btn-33:hover {
    color: white;
}

/* Style 34 - Corner Accent */
.btn-34 {
    background: white;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 12px;
    position: relative;
    font-weight: 800;
}
.btn-34::before, .btn-34::after {
    content: '';
    position: absolute;
    width: 10px;
    height: 10px;
    background: #d32f2f;
    transition: all 0.3s;
}
.btn-34::before {
    top: -2px;
    left: -2px;
    border-radius: 12px 0 0 0;
}
.btn-34::after {
    bottom: -2px;
    right: -2px;
    border-radius: 0 0 12px 0;
}
.btn-34:hover::before, .btn-34:hover::after {
    width: calc(100% + 4px);
    height: calc(100% + 4px);
}
.btn-34:hover {
    color: white;
}

/* Style 35 - Split Reveal */
.btn-35 {
    background: linear-gradient(90deg, #d32f2f 50%, white 50%);
    background-size: 200% 100%;
    background-position: right;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 10px;
    font-weight: 800;
    transition: all 0.4s;
}
.btn-35:hover {
    background-position: left;
    color: white;
}

/* Style 36 - Vibrant Gradient */
.btn-36 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border-radius: 16px;
    box-shadow: 0 8px 20px rgba(245, 87, 108, 0.4);
    font-weight: 800;
}
.btn-36:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(245, 87, 108, 0.5);
}

/* Style 37 - Chunky */
.btn-37 {
    background: #d32f2f;
    color: white;
    border-radius: 8px;
    border: 4px solid #000;
    box-shadow: 4px 4px 0 #000;
    font-weight: 900;
    text-transform: uppercase;
}
.btn-37:hover {
    transform: translate(2px, 2px);
    box-shadow: 2px 2px 0 #000;
}

/* Style 38 - Gradient Border Animated */
.btn-38 {
    background: white;
    color: #d32f2f;
    border-radius: 12px;
    position: relative;
    padding: 14px 24px;
    font-weight: 800;
}
.btn-38::before {
    content: '';
    position: absolute;
    inset: -3px;
    border-radius: 12px;
    background: linear-gradient(45deg, #ff0000, #ff7700, #ffdd00, #00ff00, #0088ff, #ff00ff);
    background-size: 400%;
    animation: gradient-rotate 3s linear infinite;
    z-index: -1;
}
@keyframes gradient-rotate {
    0% { background-position: 0% 50%; }
    100% { background-position: 400% 50%; }
}
.btn-38:hover {
    background: rgba(211, 47, 47, 0.1);
}

/* Style 39 - Soft Modern */
.btn-39 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 25px;
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.3);
    font-weight: 700;
    letter-spacing: 0.5px;
}
.btn-39:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.4);
}

/* Style 40 - Clean Pro */
.btn-40 {
    background: #d32f2f;
    color: white;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(211, 47, 47, 0.25);
    font-weight: 700;
    border: none;
    letter-spacing: 0.5px;
}
.btn-40:hover {
    background: #b71c1c;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(211, 47, 47, 0.35);
}

/* ========== ULTRA MODERN & MINIMAL STYLES (41-80) ========== */

/* Style 41 - Floating Soft */
.btn-41 {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    color: #2c3e50;
    border: none;
    border-radius: 50px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    font-weight: 600;
    letter-spacing: 0.3px;
}
.btn-41:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
}

/* Style 42 - Minimal Line */
.btn-42 {
    background: transparent;
    color: #1a1a2e;
    border: none;
    border-bottom: 2px solid #1a1a2e;
    border-radius: 0;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85rem;
    padding: 12px 20px;
}
.btn-42:hover {
    color: #d32f2f;
    border-bottom-color: #d32f2f;
    padding-left: 30px;
}

/* Style 43 - Soft Gradient Modern */
.btn-43 {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    color: #5a3825;
    border: none;
    border-radius: 16px;
    box-shadow: 0 6px 20px rgba(252, 182, 159, 0.3);
    font-weight: 700;
}
.btn-43:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(252, 182, 159, 0.4);
}

/* Style 44 - Mono Minimal */
.btn-44 {
    background: #000;
    color: #fff;
    border: none;
    border-radius: 4px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-size: 0.8rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-44:hover {
    background: #d32f2f;
    letter-spacing: 3px;
}

/* Style 45 - Subtle Depth */
.btn-45 {
    background: white;
    color: #333;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
    font-weight: 600;
}
.btn-45:hover {
    border-color: rgba(211, 47, 47, 0.3);
    color: #d32f2f;
    box-shadow: 0 4px 16px rgba(211, 47, 47, 0.12);
}

/* Style 46 - Icon Space */
.btn-46 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 14px;
    font-weight: 600;
    padding: 14px 32px 14px 56px;
    position: relative;
    overflow: hidden;
}
.btn-46::before {
    content: '→';
    position: absolute;
    left: 20px;
    font-size: 1.2rem;
    transition: left 0.3s;
}
.btn-46:hover::before {
    left: 24px;
}
.btn-46:hover {
    padding-left: 60px;
}

/* Style 47 - Micro Interaction */
.btn-47 {
    background: #1a1a2e;
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}
.btn-47::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}
.btn-47:hover::after {
    width: 300px;
    height: 300px;
}

/* Style 48 - Clean Border Shift */
.btn-48 {
    background: transparent;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 10px;
    font-weight: 700;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}
.btn-48:hover {
    background: #d32f2f;
    color: white;
    border-radius: 20px;
}

/* Style 49 - Soft Neumorphism */
.btn-49 {
    background: #e0e5ec;
    color: #2c3e50;
    border: none;
    border-radius: 20px;
    box-shadow: 9px 9px 16px rgba(163, 177, 198, 0.6), -9px -9px 16px rgba(255, 255, 255, 0.5);
    font-weight: 600;
}
.btn-49:hover {
    box-shadow: inset 4px 4px 8px rgba(163, 177, 198, 0.6), inset -4px -4px 8px rgba(255, 255, 255, 0.5);
}

/* Style 50 - Gradient Text */
.btn-50 {
    background: white;
    color: transparent;
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    border: 2px solid;
    border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%) 1;
    border-radius: 12px;
    font-weight: 800;
    position: relative;
}
.btn-50::before {
    content: attr(data-text);
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-clip: text;
    -webkit-background-clip: text;
}
.btn-50:hover {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-text-fill-color: white;
    color: white;
}

/* Style 51 - Sleek Modern */
.btn-51 {
    background: linear-gradient(to right, #232526, #414345);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}
.btn-51:hover {
    background: linear-gradient(to right, #d32f2f, #b71c1c);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(211, 47, 47, 0.3);
}

/* Style 52 - Thin Elegant */
.btn-52 {
    background: transparent;
    color: #1a1a2e;
    border: 1px solid #1a1a2e;
    border-radius: 50px;
    font-weight: 500;
    letter-spacing: 1px;
    padding: 12px 32px;
}
.btn-52:hover {
    background: #1a1a2e;
    color: white;
    padding: 12px 40px;
}

/* Style 53 - Split Diagonal */
.btn-53 {
    background: linear-gradient(135deg, #d32f2f 0%, #d32f2f 50%, transparent 50%);
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 10px;
    font-weight: 700;
    transition: all 0.4s;
}
.btn-53:hover {
    background: linear-gradient(135deg, #d32f2f 0%, #d32f2f 100%, transparent 100%);
    color: white;
}

/* Style 54 - Rounded Minimal */
.btn-54 {
    background: #fff;
    color: #2c3e50;
    border: 1px solid #e8eef5;
    border-radius: 100px;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}
.btn-54:hover {
    background: #f8f9fa;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transform: scale(1.05);
}

/* Style 55 - Cosmic Glow */
.btn-55 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 14px;
    box-shadow: 0 0 20px rgba(102, 126, 234, 0.4);
    font-weight: 700;
}
.btn-55:hover {
    box-shadow: 0 0 40px rgba(102, 126, 234, 0.6), 0 0 60px rgba(118, 75, 162, 0.4);
    transform: scale(1.02);
}

/* Style 56 - Slide Border */
.btn-56 {
    background: white;
    color: #1a1a2e;
    border: 2px solid transparent;
    border-radius: 10px;
    font-weight: 700;
    position: relative;
    z-index: 1;
}
.btn-56::before {
    content: '';
    position: absolute;
    inset: -2px;
    border-radius: 10px;
    padding: 2px;
    background: linear-gradient(90deg, #d32f2f, #764ba2);
    -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.3s;
}
.btn-56:hover::before {
    opacity: 1;
}
.btn-56:hover {
    color: #d32f2f;
}

/* Style 57 - Futuristic Minimal */
.btn-57 {
    background: transparent;
    color: #00fff0;
    border: 1px solid #00fff0;
    border-radius: 6px;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 2px;
}
.btn-57:hover {
    background: #00fff0;
    color: #000;
    box-shadow: 0 0 20px rgba(0, 255, 240, 0.5);
}

/* Style 58 - Soft Blob */
.btn-58 {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
    color: white;
    border: none;
    border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%;
    font-weight: 700;
    animation: blob-morph 5s ease-in-out infinite;
}
@keyframes blob-morph {
    0%, 100% { border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; }
    50% { border-radius: 70% 30% 30% 70% / 70% 70% 30% 30%; }
}
.btn-58:hover {
    animation-duration: 2s;
}

/* Style 59 - Elegant Underline */
.btn-59 {
    background: transparent;
    color: #1a1a2e;
    border: none;
    border-radius: 0;
    font-weight: 600;
    letter-spacing: 0.5px;
    position: relative;
    padding-bottom: 10px;
}
.btn-59::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: #d32f2f;
    transition: all 0.4s;
    transform: translateX(-50%);
}
.btn-59:hover::after {
    width: 100%;
}

/* Style 60 - Depth Shadow */
.btn-60 {
    background: white;
    color: #2c3e50;
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    font-weight: 600;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.btn-60:hover {
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.12);
    transform: translateY(-5px);
}

/* Style 61 - Modern Outline */
.btn-61 {
    background: transparent;
    color: #d32f2f;
    border: 2px solid currentColor;
    border-radius: 8px;
    font-weight: 600;
    position: relative;
    overflow: hidden;
}
.btn-61::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: #d32f2f;
    transition: left 0.5s;
    z-index: -1;
}
.btn-61:hover {
    color: white;
}
.btn-61:hover::before {
    left: 0;
}

/* Style 62 - Pill Shape */
.btn-62 {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    color: white;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    padding: 14px 40px;
    box-shadow: 0 6px 20px rgba(245, 87, 108, 0.3);
}
.btn-62:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(245, 87, 108, 0.4);
    padding: 14px 48px;
}

/* Style 63 - Tech Modern */
.btn-63 {
    background: #0f0f0f;
    color: #00ff88;
    border: 1px solid #00ff88;
    border-radius: 4px;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    letter-spacing: 1px;
    text-transform: uppercase;
    font-size: 0.85rem;
}
.btn-63:hover {
    background: #00ff88;
    color: #0f0f0f;
    box-shadow: 0 0 30px rgba(0, 255, 136, 0.5);
}

/* Style 64 - Subtle Lift */
.btn-64 {
    background: #fafafa;
    color: #333;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}
.btn-64:hover {
    background: white;
    border-color: #d32f2f;
    color: #d32f2f;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(211, 47, 47, 0.15);
}

/* Style 65 - Ghost Gradient */
.btn-65 {
    background: transparent;
    color: transparent;
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-clip: text;
    -webkit-background-clip: text;
    border: 2px solid;
    border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%) 1;
    border-radius: 12px;
    font-weight: 800;
}
.btn-65:hover {
    background-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    background-clip: border-box;
    -webkit-background-clip: border-box;
    color: white;
    -webkit-text-fill-color: white;
}

/* Style 66 - Minimal Drop */
.btn-66 {
    background: white;
    color: #2c3e50;
    border: none;
    border-radius: 8px;
    box-shadow: 0 4px 0 #d32f2f;
    font-weight: 700;
}
.btn-66:hover {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #d32f2f;
}

/* Style 67 - Smooth Fade */
.btn-67 {
    background: linear-gradient(135deg, rgba(211, 47, 47, 0.8) 0%, rgba(211, 47, 47, 1) 100%);
    color: white;
    border: none;
    border-radius: 14px;
    font-weight: 600;
    backdrop-filter: blur(10px);
}
.btn-67:hover {
    background: linear-gradient(135deg, rgba(211, 47, 47, 1) 0%, rgba(183, 28, 28, 1) 100%);
    transform: scale(1.03);
}

/* Style 68 - Crisp Modern */
.btn-68 {
    background: #fff;
    color: #1a1a2e;
    border: 1px solid #1a1a2e;
    border-radius: 6px;
    font-weight: 600;
    letter-spacing: 0.5px;
    transition: all 0.3s;
}
.btn-68:hover {
    background: #1a1a2e;
    color: white;
    transform: scale(1.05);
}

/* Style 69 - Luxe Gradient */
.btn-69 {
    background: linear-gradient(135deg, #c79081 0%, #dfa579 100%);
    color: white;
    border: none;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(199, 144, 129, 0.3);
    font-weight: 700;
}
.btn-69:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(199, 144, 129, 0.4);
}

/* Style 70 - Flat Modern */
.btn-70 {
    background: #d32f2f;
    color: white;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    letter-spacing: 0.3px;
}
.btn-70:hover {
    background: #b71c1c;
}

/* Style 71 - Ring Glow */
.btn-71 {
    background: white;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 12px;
    font-weight: 700;
    box-shadow: 0 0 0 0 rgba(211, 47, 47, 0.5);
    transition: all 0.3s;
}
.btn-71:hover {
    box-shadow: 0 0 0 8px rgba(211, 47, 47, 0);
    background: #d32f2f;
    color: white;
}

/* Style 72 - Asymmetric */
.btn-72 {
    background: #1a1a2e;
    color: white;
    border: none;
    border-radius: 20px 4px 20px 4px;
    font-weight: 600;
}
.btn-72:hover {
    border-radius: 4px 20px 4px 20px;
    background: #d32f2f;
}

/* Style 73 - Outlined Shift */
.btn-73 {
    background: transparent;
    color: #2c3e50;
    border: 2px solid #2c3e50;
    border-radius: 10px;
    font-weight: 700;
}
.btn-73:hover {
    background: #2c3e50;
    color: white;
    border-radius: 20px;
    padding: 14px 32px;
}

/* Style 74 - Minimal Gradient */
.btn-74 {
    background: linear-gradient(to right, #667eea, #764ba2);
    color: white;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    opacity: 0.9;
}
.btn-74:hover {
    opacity: 1;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

/* Style 75 - Smooth Transition */
.btn-75 {
    background: white;
    color: #d32f2f;
    border: 2px solid #d32f2f;
    border-radius: 50px;
    font-weight: 700;
    transition: all 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}
.btn-75:hover {
    background: #d32f2f;
    color: white;
    border-radius: 10px;
    transform: scale(1.1);
}

/* Style 76 - Soft Glow */
.btn-76 {
    background: rgba(211, 47, 47, 0.1);
    color: #d32f2f;
    border: none;
    border-radius: 14px;
    font-weight: 700;
    backdrop-filter: blur(5px);
}
.btn-76:hover {
    background: #d32f2f;
    color: white;
    box-shadow: 0 0 30px rgba(211, 47, 47, 0.4);
}

/* Style 77 - Clean Line */
.btn-77 {
    background: transparent;
    color: #1a1a2e;
    border: none;
    border-left: 4px solid #d32f2f;
    border-radius: 0;
    font-weight: 600;
    text-align: left;
    padding-left: 20px;
}
.btn-77:hover {
    background: rgba(211, 47, 47, 0.05);
    border-left-width: 8px;
    padding-left: 24px;
}

/* Style 78 - Bubble Modern */
.btn-78 {
    background: linear-gradient(135deg, #a8edea 0%, #fed6e3 100%);
    color: #2c3e50;
    border: none;
    border-radius: 24px;
    font-weight: 700;
    box-shadow: 0 6px 20px rgba(168, 237, 234, 0.3);
}
.btn-78:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(168, 237, 234, 0.4);
    border-radius: 16px;
}

/* Style 79 - Sleek Outline */
.btn-79 {
    background: transparent;
    color: #d32f2f;
    border: 1px solid rgba(211, 47, 47, 0.3);
    border-radius: 8px;
    font-weight: 600;
    letter-spacing: 0.5px;
}
.btn-79:hover {
    border-color: #d32f2f;
    background: rgba(211, 47, 47, 0.05);
    transform: translateY(-1px);
}

/* Style 80 - Ultra Minimal */
.btn-80 {
    background: #1a1a2e;
    color: white;
    border: none;
    border-radius: 2px;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    font-size: 0.8rem;
    padding: 12px 28px;
}
.btn-80:hover {
    background: #d32f2f;
    letter-spacing: 2px;
    padding: 12px 32px;
}

/* Responsive */
@media (max-width: 768px) {
    .button-grid {
        grid-template-columns: 1fr;
    }
    
    .button-demo-section {
        padding: 25px 15px;
    }
}