*, *::before, *::after {
box-sizing: border-box;
}
body {
font-family: system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
margin: 0;
background: #020617;
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
padding: 20px;
}
.book-showcase {
perspective: 1600px;
display: flex;
justify-content: center;
align-items: center;
}
.hardcover-book {
position: relative;
width: 320px;
height: 450px;
transform-style: preserve-3d;
transform: rotateX(30deg) rotateY(-25deg);
transition: transform 0.6s ease;
cursor: pointer;
}
.hardcover-book:hover {
transform: rotateX(15deg) rotateY(-10deg);
}
.pages-block {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: #f8fafc;
border-radius: 2px 8px 8px 2px;
transform-style: preserve-3d;
box-shadow: inset 10px 0 20px rgba(0,0,0,0.1), 10px 10px 30px rgba(0,0,0,0.5);
}
.pages-content {
padding: 40px;
height: 100%;
display: flex;
flex-direction: column;
justify-content: center;
color: #0f172a;
}
.tag {
font-size: 0.85rem;
font-weight: 700;
color: #3b82f6;
letter-spacing: 2px;
margin-bottom: 20px;
}
.pages-content h2 {
font-size: 2.2rem;
margin: 0 0 16px 0;
line-height: 1.1;
letter-spacing: -1px;
}
.pages-content p {
color: #475569;
line-height: 1.6;
margin-bottom: 40px;
}
.btn-primary {
align-self: flex-start;
background: #0f172a;
color: #ffffff;
border: none;
padding: 12px 24px;
border-radius: 6px;
font-weight: 600;
cursor: pointer;
transition: background 0.2s;
}
.btn-primary:hover {
background: #3b82f6;
}
/* Constructing the physical thickness of the pages */
.edge {
position: absolute;
background: #e2e8f0;
/* Striped background to mimic individual pages of paper */
background-image: repeating-linear-gradient(to bottom, #e2e8f0 0px, #e2e8f0 2px, #cbd5e1 2px, #cbd5e1 3px);
}
.right-edge {
top: 4px;
right: 0;
width: 20px;
height: calc(100% - 8px);
transform-origin: right center;
transform: rotateY(90deg);
}
.bottom-edge {
bottom: 0;
left: 4px;
width: calc(100% - 8px);
height: 20px;
transform-origin: bottom center;
transform: rotateX(-90deg);
background-image: repeating-linear-gradient(to right, #e2e8f0 0px, #e2e8f0 2px, #cbd5e1 2px, #cbd5e1 3px);
}
/* The Cover Logic */
.front-cover {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
transform-origin: 0 50%;
transform-style: preserve-3d;
/* Sit directly on top of the 20px thick pages */
transform: translateZ(21px);
/* CRITICAL FIX: The cubic-bezier 0.2, 0.8, 0.2, 1 guarantees NO OVERSHOOT when returning to 0 */
transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
z-index: 10;
}
.hardcover-book:hover .front-cover {
transform: translateZ(21px) rotateY(-160deg);
}
/* Dual-sided cover geometry */
.cover-side {
position: absolute;
top: -2px;
left: -2px;
/* Slightly larger than pages for hardcover overhang */
width: calc(100% + 6px);
height: calc(100% + 4px);
border-radius: 4px 12px 12px 4px;
backface-visibility: hidden;
}
.cover-outside {
background: #0f172a;
color: #ffffff;
box-shadow: inset 8px 0 20px rgba(0,0,0,0.8), 5px 5px 15px rgba(0,0,0,0.5);
border-left: 2px solid #1e293b;
transform: translateZ(1px);
}
.cover-design {
padding: 40px;
height: 100%;
display: flex;
flex-direction: column;
justify-content: space-between;
background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), transparent);
}
.logo-mark {
color: #3b82f6;
}
.cover-titles h1 {
font-size: 3rem;
margin: 0;
letter-spacing: 4px;
}
.cover-titles p {
margin: 10px 0 0 0;
color: #94a3b8;
letter-spacing: 2px;
font-size: 0.9rem;
}
.cover-inside {
background: #1e293b;
transform: rotateY(180deg) translateZ(1px);
box-shadow: inset -8px 0 20px rgba(0,0,0,0.8);
display: flex;
justify-content: center;
align-items: center;
}
.inside-pattern {
width: 80%;
height: 80%;
border: 1px solid rgba(255,255,255,0.05);
background-image: radial-gradient(rgba(255,255,255,0.05) 1px, transparent 1px);
background-size: 10px 10px;
}
