/* Card Demo Section */
.card-demo-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px;
    border-radius: 24px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    margin-top: 30px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.card-demo-section h2 {
    text-align: center;
    color: #1a1a2e;
    margin-bottom: 10px;
    font-size: 2rem;
}

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

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 20px;
}

.card-item {
    position: relative;
}

.card-number {
    position: absolute;
    top: -12px;
    left: -12px;
    background: linear-gradient(135deg, #d32f2f 0%, #b71c1c 100%);
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.9rem;
    z-index: 10;
    box-shadow: 0 4px 12px rgba(211, 47, 47, 0.4);
}

.demo-card {
    padding: 24px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.demo-card h3 {
    font-size: 1.25rem;
    margin-bottom: 8px;
    font-weight: 700;
}

.demo-card p {
    color: #666;
    font-size: 0.95rem;
    margin: 0;
}

.demo-block {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-bottom: 12px;
}

/* ========== 50 MODERN CARD STYLES ========== */

/* Card 1 - Classic Minimal */
.card-1 {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
.card-1:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}
.card-1 .demo-block {
    background: #1a1a2e;
    color: white;
}

/* Card 2 - Soft Shadow */
.card-2 {
    background: #fafafa;
    border: none;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.card-2:hover {
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
    transform: translateY(-6px);
}
.card-2 .demo-block {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Card 3 - Border Accent */
.card-3 {
    background: white;
    border: 2px solid #d32f2f;
    border-radius: 10px;
    box-shadow: 0 2px 12px rgba(211, 47, 47, 0.1);
}
.card-3:hover {
    border-color: #b71c1c;
    box-shadow: 0 6px 24px rgba(211, 47, 47, 0.2);
}
.card-3 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 4 - Neumorphism */
.card-4 {
    background: #e0e5ec;
    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);
}
.card-4:hover {
    box-shadow: inset 2px 2px 5px rgba(163, 177, 198, 0.2), inset -3px -3px 7px rgba(255, 255, 255, 0.8);
}
.card-4 .demo-block {
    background: #2c3e50;
    color: white;
}

/* Card 5 - Gradient Background */
.card-5 {
    background: linear-gradient(135deg, #ffecd2 0%, #fcb69f 100%);
    border: none;
    border-radius: 18px;
    box-shadow: 0 6px 20px rgba(252, 182, 159, 0.3);
}
.card-5:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(252, 182, 159, 0.4);
}
.card-5 .demo-block {
    background: rgba(255, 255, 255, 0.9);
    color: #5a3825;
}

/* Card 6 - Glass Effect */
.card-6 {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}
.card-6:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: scale(1.02);
}
.card-6 .demo-block {
    background: rgba(211, 47, 47, 0.9);
    color: white;
}

/* Card 7 - Left Border */
.card-7 {
    background: white;
    border: 1px solid #f0f0f0;
    border-left: 4px solid #00b140;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.06);
}
.card-7:hover {
    border-left-width: 6px;
    box-shadow: 0 6px 20px rgba(0, 177, 64, 0.15);
}
.card-7 .demo-block {
    background: #00b140;
    color: white;
}

/* Card 8 - Elevated Modern */
.card-8 {
    background: white;
    border: none;
    border-radius: 14px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.card-8:hover {
    box-shadow: 0 14px 28px rgba(0, 0, 0, 0.15), 0 10px 10px rgba(0, 0, 0, 0.12);
    transform: translateY(-8px);
}
.card-8 .demo-block {
    background: #232526;
    color: white;
}

/* Card 9 - Rounded Corners */
.card-9 {
    background: white;
    border: 1px solid #e8e8e8;
    border-radius: 24px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.card-9:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.card-9 .demo-block {
    background: linear-gradient(to right, #fa709a 0%, #fee140 100%);
    color: white;
}

/* Card 10 - Subtle Gradient */
.card-10 {
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border: none;
    border-radius: 16px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.1);
}
.card-10:hover {
    transform: translateY(-4px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}
.card-10 .demo-block {
    background: #2c3e50;
    color: white;
}

/* Card 11 - Sharp Edges */
.card-11 {
    background: white;
    border: 2px solid #000;
    border-radius: 0;
    box-shadow: 5px 5px 0 #000;
}
.card-11:hover {
    transform: translate(-2px, -2px);
    box-shadow: 7px 7px 0 #000;
}
.card-11 .demo-block {
    background: #000;
    color: white;
}

/* Card 12 - Soft Pink */
.card-12 {
    background: linear-gradient(135deg, #fff5f7 0%, #ffe8ec 100%);
    border: 1px solid rgba(211, 47, 47, 0.1);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(211, 47, 47, 0.1);
}
.card-12:hover {
    box-shadow: 0 8px 32px rgba(211, 47, 47, 0.15);
    transform: translateY(-3px);
}
.card-12 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 13 - Dark Mode */
.card-13 {
    background: #1a1a2e;
    border: 1px solid #16213e;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    color: white;
}
.card-13:hover {
    background: #16213e;
    transform: translateY(-4px);
}
.card-13 .demo-block {
    background: #d32f2f;
    color: white;
}
.card-13 p {
    color: #bbb;
}

/* Card 14 - Minimal Line */
.card-14 {
    background: transparent;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: none;
}
.card-14:hover {
    background: #fafafa;
    border-color: #999;
}
.card-14 .demo-block {
    background: #333;
    color: white;
}

/* Card 15 - Floating */
.card-15 {
    background: white;
    border: none;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
}
.card-15:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}
.card-15 .demo-block {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Card 16 - Colorful Border */
.card-16 {
    background: white;
    border: 3px solid;
    border-image: linear-gradient(135deg, #667eea 0%, #764ba2 100%) 1;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}
.card-16:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.2);
}
.card-16 .demo-block {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

/* Card 17 - Striped */
.card-17 {
    background: repeating-linear-gradient(
        45deg,
        #ffffff,
        #ffffff 10px,
        #f9f9f9 10px,
        #f9f9f9 20px
    );
    border: 1px solid #e0e0e0;
    border-radius: 14px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.06);
}
.card-17:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}
.card-17 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 18 - Neon Glow */
.card-18 {
    background: #0f0f0f;
    border: 1px solid #00fff0;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 255, 240, 0.3);
    color: #00fff0;
}
.card-18:hover {
    box-shadow: 0 0 40px rgba(0, 255, 240, 0.5);
}
.card-18 .demo-block {
    background: #00fff0;
    color: #0f0f0f;
}
.card-18 p {
    color: #00fff0;
}

/* Card 19 - Soft Blue */
.card-19 {
    background: linear-gradient(135deg, #e0f7fa 0%, #b2ebf2 100%);
    border: none;
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 188, 212, 0.2);
}
.card-19:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 188, 212, 0.3);
}
.card-19 .demo-block {
    background: #00bcd4;
    color: white;
}

/* Card 20 - Bento Box */
.card-20 {
    background: white;
    border: 2px solid #f0f0f0;
    border-radius: 8px;
    box-shadow: inset 0 0 0 1px #fff, 0 2px 8px rgba(0, 0, 0, 0.08);
}
.card-20:hover {
    border-color: #d32f2f;
    box-shadow: inset 0 0 0 1px #d32f2f, 0 4px 16px rgba(211, 47, 47, 0.15);
}
.card-20 .demo-block {
    background: #f44336;
    color: white;
}

/* Card 21 - Asymmetric */
.card-21 {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 24px 4px 24px 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.card-21:hover {
    border-radius: 4px 24px 4px 24px;
    transform: translateY(-3px);
}
.card-21 .demo-block {
    background: #9c27b0;
    color: white;
}

/* Card 22 - Dotted Border */
.card-22 {
    background: white;
    border: 2px dotted #d32f2f;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}
.card-22:hover {
    border-style: solid;
    box-shadow: 0 6px 20px rgba(211, 47, 47, 0.15);
}
.card-22 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 23 - Warm Gradient */
.card-23 {
    background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 100%);
    border: none;
    border-radius: 18px;
    box-shadow: 0 6px 20px rgba(255, 154, 158, 0.3);
}
.card-23:hover {
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(255, 154, 158, 0.4);
}
.card-23 .demo-block {
    background: rgba(255, 255, 255, 0.9);
    color: #ff6b6b;
}

/* Card 24 - Tech Style */
.card-24 {
    background: #000;
    border: 1px solid #00ff88;
    border-radius: 6px;
    box-shadow: 0 4px 16px rgba(0, 255, 136, 0.2);
    color: #00ff88;
    font-family: 'Courier New', monospace;
}
.card-24:hover {
    box-shadow: 0 8px 32px rgba(0, 255, 136, 0.4);
}
.card-24 .demo-block {
    background: #00ff88;
    color: #000;
}
.card-24 p {
    color: #00ff88;
}

/* Card 25 - Paper Effect */
.card-25 {
    background: #fff;
    border: none;
    border-radius: 2px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1), 0 4px 8px rgba(0, 0, 0, 0.1);
}
.card-25:hover {
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15), 0 8px 16px rgba(0, 0, 0, 0.15);
    transform: translateY(-2px);
}
.card-25 .demo-block {
    background: #607d8b;
    color: white;
}

/* Card 26 - Rainbow Border */
.card-26 {
    background: white;
    border: 3px solid;
    border-image: linear-gradient(90deg, #ff0000, #ff7f00, #ffff00, #00ff00, #0000ff, #4b0082, #9400d3) 1;
    border-radius: 14px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}
.card-26:hover {
    transform: scale(1.03);
}
.card-26 .demo-block {
    background: linear-gradient(90deg, #ff0000, #ff7f00);
    color: white;
}

/* Card 27 - Minimalist White */
.card-27 {
    background: #fff;
    border: 1px solid #f5f5f5;
    border-radius: 10px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
}
.card-27:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}
.card-27 .demo-block {
    background: #e0e0e0;
    color: #333;
}

/* Card 28 - Green Accent */
.card-28 {
    background: linear-gradient(135deg, #f0fff4 0%, #c6f6d5 100%);
    border: 1px solid rgba(0, 177, 64, 0.2);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(0, 177, 64, 0.1);
}
.card-28:hover {
    box-shadow: 0 8px 32px rgba(0, 177, 64, 0.2);
}
.card-28 .demo-block {
    background: #00b140;
    color: white;
}

/* Card 29 - Purple Dream */
.card-29 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: none;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.3);
    color: white;
}
.card-29:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 48px rgba(102, 126, 234, 0.4);
}
.card-29 .demo-block {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}
.card-29 p {
    color: rgba(255, 255, 255, 0.9);
}

/* Card 30 - Outlined Modern */
.card-30 {
    background: transparent;
    border: 2px solid #333;
    border-radius: 10px;
    box-shadow: none;
}
.card-30:hover {
    background: #fafafa;
    border-color: #d32f2f;
    box-shadow: 0 4px 16px rgba(211, 47, 47, 0.1);
}
.card-30 .demo-block {
    background: #333;
    color: white;
}

/* Card 31 - Soft Orange */
.card-31 {
    background: linear-gradient(135deg, #fff5eb 0%, #ffe8cc 100%);
    border: 1px solid rgba(255, 152, 0, 0.2);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(255, 152, 0, 0.1);
}
.card-31:hover {
    box-shadow: 0 8px 32px rgba(255, 152, 0, 0.2);
    transform: translateY(-4px);
}
.card-31 .demo-block {
    background: #ff9800;
    color: white;
}

/* Card 32 - Thick Border */
.card-32 {
    background: white;
    border: 4px solid #1a1a2e;
    border-radius: 12px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
}
.card-32:hover {
    border-color: #d32f2f;
    transform: scale(1.02);
}
.card-32 .demo-block {
    background: #1a1a2e;
    color: white;
}

/* Card 33 - Monochrome */
.card-33 {
    background: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}
.card-33:hover {
    background: #fff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.card-33 .demo-block {
    background: #555;
    color: white;
}

/* Card 34 - Cyan Modern */
.card-34 {
    background: linear-gradient(135deg, #e0f2f1 0%, #b2dfdb 100%);
    border: none;
    border-radius: 18px;
    box-shadow: 0 5px 18px rgba(0, 150, 136, 0.2);
}
.card-34:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 150, 136, 0.3);
}
.card-34 .demo-block {
    background: #009688;
    color: white;
}

/* Card 35 - Layered */
.card-35 {
    background: white;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    box-shadow: 0 0 0 4px rgba(211, 47, 47, 0.1), 0 4px 16px rgba(0, 0, 0, 0.08);
}
.card-35:hover {
    box-shadow: 0 0 0 6px rgba(211, 47, 47, 0.2), 0 8px 32px rgba(0, 0, 0, 0.12);
}
.card-35 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 36 - Split Tone */
.card-36 {
    background: linear-gradient(to right, #fff 0%, #fff 50%, #f5f5f5 50%, #f5f5f5 100%);
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.06);
}
.card-36:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.1);
}
.card-36 .demo-block {
    background: linear-gradient(to right, #d32f2f, #b71c1c);
    color: white;
}

/* Card 37 - Pixel Perfect */
.card-37 {
    background: white;
    border: 1px solid #ebebeb;
    border-radius: 4px;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}
.card-37:hover {
    border-color: #d32f2f;
    box-shadow: 0 2px 8px rgba(211, 47, 47, 0.1);
}
.card-37 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 38 - Amber Glow */
.card-38 {
    background: linear-gradient(135deg, #fff8e1 0%, #ffecb3 100%);
    border: 1px solid rgba(255, 193, 7, 0.3);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(255, 193, 7, 0.15);
}
.card-38:hover {
    box-shadow: 0 8px 32px rgba(255, 193, 7, 0.25);
    transform: translateY(-4px);
}
.card-38 .demo-block {
    background: #ffc107;
    color: #333;
}

/* Card 39 - Double Border */
.card-39 {
    background: white;
    border: 3px double #d32f2f;
    border-radius: 10px;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.06);
}
.card-39:hover {
    border-color: #b71c1c;
    box-shadow: 0 6px 20px rgba(211, 47, 47, 0.15);
}
.card-39 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 40 - Retro */
.card-40 {
    background: #fffacd;
    border: 3px solid #000;
    border-radius: 0;
    box-shadow: 8px 8px 0 #000;
}
.card-40:hover {
    transform: translate(-4px, -4px);
    box-shadow: 12px 12px 0 #000;
}
.card-40 .demo-block {
    background: #ff1493;
    color: white;
}

/* Card 41 - Indigo Wave */
.card-41 {
    background: linear-gradient(135deg, #e8eaf6 0%, #c5cae9 100%);
    border: none;
    border-radius: 18px;
    box-shadow: 0 6px 20px rgba(63, 81, 181, 0.2);
}
.card-41:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(63, 81, 181, 0.3);
}
.card-41 .demo-block {
    background: #3f51b5;
    color: white;
}

/* Card 42 - Slim Border */
.card-42 {
    background: white;
    border: 1px solid #eee;
    border-radius: 6px;
    box-shadow: 0 1px 4px rgba(0, 0, 0, 0.04);
}
.card-42:hover {
    border-color: #d32f2f;
    box-shadow: 0 3px 12px rgba(211, 47, 47, 0.1);
}
.card-42 .demo-block {
    background: #d32f2f;
    color: white;
}

/* Card 43 - Teal Mood */
.card-43 {
    background: linear-gradient(135deg, #e0f7fa 0%, #80deea 100%);
    border: none;
    border-radius: 20px;
    box-shadow: 0 8px 24px rgba(0, 188, 212, 0.2);
}
.card-43:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 36px rgba(0, 188, 212, 0.3);
}
.card-43 .demo-block {
    background: #00bcd4;
    color: white;
}

/* Card 44 - Brutalist */
.card-44 {
    background: #fff;
    border: 4px solid #000;
    border-radius: 0;
    box-shadow: none;
}
.card-44:hover {
    background: #f0f0f0;
    border-color: #d32f2f;
}
.card-44 .demo-block {
    background: #000;
    color: #fff;
}

/* Card 45 - Lime Fresh */
.card-45 {
    background: linear-gradient(135deg, #f9fbe7 0%, #f0f4c3 100%);
    border: 1px solid rgba(205, 220, 57, 0.3);
    border-radius: 16px;
    box-shadow: 0 4px 16px rgba(205, 220, 57, 0.15);
}
.card-45:hover {
    box-shadow: 0 8px 32px rgba(205, 220, 57, 0.25);
    transform: translateY(-4px);
}
.card-45 .demo-block {
    background: #cddc39;
    color: #333;
}

/* Card 46 - Deep Shadow */
.card-46 {
    background: white;
    border: none;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}
.card-46:hover {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    transform: translateY(-10px);
}
.card-46 .demo-block {
    background: linear-gradient(135deg, #434343 0%, #000000 100%);
    color: white;
}

/* Card 47 - Red Alert */
.card-47 {
    background: #fff;
    border: 2px solid #f44336;
    border-radius: 10px;
    box-shadow: 0 0 0 4px rgba(244, 67, 54, 0.1);
}
.card-47:hover {
    box-shadow: 0 0 0 6px rgba(244, 67, 54, 0.2), 0 6px 20px rgba(244, 67, 54, 0.15);
}
.card-47 .demo-block {
    background: #f44336;
    color: white;
}

/* Card 48 - Peach */
.card-48 {
    background: linear-gradient(135deg, #ffebee 0%, #ffcdd2 100%);
    border: 1px solid rgba(244, 67, 54, 0.2);
    border-radius: 16px;
    box-shadow: 0 5px 18px rgba(244, 67, 54, 0.1);
}
.card-48:hover {
    box-shadow: 0 10px 30px rgba(244, 67, 54, 0.2);
    transform: translateY(-5px);
}
.card-48 .demo-block {
    background: #e91e63;
    color: white;
}

/* Card 49 - Gray Scale */
.card-49 {
    background: linear-gradient(135deg, #fafafa 0%, #e0e0e0 100%);
    border: 1px solid #bdbdbd;
    border-radius: 14px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}
.card-49:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}
.card-49 .demo-block {
    background: #616161;
    color: white;
}

/* Card 50 - Cool Blue */
.card-50 {
    background: linear-gradient(135deg, #e3f2fd 0%, #90caf9 100%);
    border: none;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(33, 150, 243, 0.3);
}
.card-50:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 48px rgba(33, 150, 243, 0.4);
}
.card-50 .demo-block {
    background: #2196f3;
    color: white;
}

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