/* Custom Utilities */
body {
    background-color: #F5F5F4;
    color: #1c1917;
}

/* Fade-in Animation Classes */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s cubic-bezier(0.5, 0, 0, 1);
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered delays for children */
.reveal-delay-100 { transition-delay: 100ms; }
.reveal-delay-200 { transition-delay: 200ms; }
.reveal-delay-300 { transition-delay: 300ms; }

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #F5F5F4;
}
::-webkit-scrollbar-thumb {
    background: #064E3B;
    border-radius: 4px;
}

/* 3D Visualization Styles */
.perspective-container {
    perspective: 1200px;
}
.building-stack {
    position: relative;
    width: 300px;
    height: 300px;
    transform-style: preserve-3d;
    transform: rotateX(60deg) rotateZ(-45deg);
    transition: transform 0.8s cubic-bezier(0.2, 0.8, 0.2, 1);
    margin: 0 auto;
}
.floor-plate {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.95);
    border: 2px solid #064E3B;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    color: #064E3B;
    box-shadow: 10px 10px 30px rgba(0,0,0,0.15);
    transition: all 0.4s ease;
    cursor: pointer;
    text-align: center;
    font-size: 1.2rem;
    backface-visibility: hidden;
}
.floor-plate:hover, .floor-plate.active {
    background: #064E3B;
    color: #F5F5F4;
    border-color: #34D399;
    box-shadow: 20px 20px 50px rgba(6, 78, 59, 0.4);
}

/* Positioning Layers */
.layer-roof { transform: translateZ(280px) translateY(-80px); z-index: 60; }
.layer-residential { transform: translateZ(200px) translateY(-40px); z-index: 50; }
.layer-coworking { transform: translateZ(120px) translateY(0px); z-index: 40; }
.layer-rdc { transform: translateZ(40px) translateY(40px); z-index: 30; }
.layer-basement { transform: translateZ(-40px) translateY(80px); z-index: 20; background: #e7e5e4; }

/* Hover Effects */
.layer-roof:hover, .layer-roof.active { transform: translateZ(300px) translateY(-80px); }
.layer-residential:hover, .layer-residential.active { transform: translateZ(220px) translateY(-40px); }
.layer-coworking:hover, .layer-coworking.active { transform: translateZ(140px) translateY(0px); }
.layer-rdc:hover, .layer-rdc.active { transform: translateZ(60px) translateY(40px); }
.layer-basement:hover, .layer-basement.active { transform: translateZ(-20px) translateY(80px); }

/* Engineering Mode */
.building-stack.engineering .floor-plate {
    background: rgba(6, 78, 59, 0.1);
    border: 1px dashed #064E3B;
    color: transparent;
}
.building-stack.engineering .floor-plate::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyMCIgaGVpZ2h0PSIyMCIgdmlld0JveD0iMCAwIDIwIDIwIiBmaWxsPSJub25lIiBzdHJva2U9IiMwNjRFM0IiIHN0cm9rZS13aWR0aD0iMSI+PHBhdGggZD0iTTAgMjBMMjAgME0xMCAyMEwyMCAxME0wIDEwTDEwIDAiLz48L3N2Zz4=');
    opacity: 0.2;
    border-radius: 14px;
}

/* --- New Styles for Interactive Floor Plan --- */

.floor-plan-wrapper {
    position: relative;
    width: 100%;
    height: 400px;
    margin-top: 20px;
    margin-bottom: 20px;
    perspective: 1000px;
    overflow: hidden;
    border: 1px solid #e7e5e4;
    border-radius: 12px;
    background: #fafaf9;
}

.floor-plan-scene {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 70%;
    height: 70%;
    transform: translate(-50%, -50%) rotateX(30deg);
    transform-style: preserve-3d;
    background: rgba(255, 255, 255, 0.8);
    border: 2px solid #064E3B;
    box-shadow: 0 20px 50px rgba(0,0,0,0.1);
    transition: transform 0.6s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.floor-plan-wrapper:hover .floor-plan-scene {
    transform: translate(-50%, -50%) rotateX(0deg) scale(1.1);
}

.fp-wall {
    position: absolute;
    background: #44403c;
    z-index: 10;
}

.fp-door {
    position: absolute;
    background: #C2410C;
    z-index: 11;
}

.fp-area {
    position: absolute;
    background: rgba(6, 78, 59, 0.05);
    border: 1px dashed rgba(6, 78, 59, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    cursor: help;
    transition: all 0.3s ease;
    z-index: 5;
}

.fp-area:hover {
    background: rgba(6, 78, 59, 0.15);
    border-color: #064E3B;
    box-shadow: 0 0 15px rgba(6, 78, 59, 0.1);
    z-index: 20;
}

.fp-label {
    font-size: 0.7rem;
    font-weight: 600;
    color: #064E3B;
    background: rgba(255,255,255,0.8);
    padding: 2px 6px;
    border-radius: 4px;
    text-align: center;
    white-space: nowrap;
    pointer-events: none;
}

.fp-size {
    font-size: 0.6rem;
    color: #C2410C;
    margin-top: 2px;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.2s;
    background: rgba(255,255,255,0.9);
    padding: 1px 4px;
    border-radius: 2px;
}

.fp-area:hover .fp-size {
    opacity: 1;
}

.fp-furniture {
    position: absolute;
    color: #78716c;
    z-index: 8;
    pointer-events: none;
}

.unit-toggle-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: white;
    border: 1px solid #d6d3d1;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: #44403c;
    cursor: pointer;
    transition: all 0.2s;
    margin-left: auto;
}

.unit-toggle-btn:hover {
    border-color: #064E3B;
    color: #064E3B;
}

.unit-toggle-btn.active {
    background: #064E3B;
    color: white;
    border-color: #064E3B;
}