body {
    overflow-x: hidden;
}

.mockup-3d {
    transform: perspective(1000px) rotateY(-12deg) rotateX(8deg);
    transition: transform 0.5s ease;
}

.mockup-3d:hover {
    transform: perspective(1000px) rotateY(-8deg) rotateX(4deg) scale(1.02);
}

.mockup-3d-2 {
    transform: perspective(1000px) rotateY(12deg) rotateX(-4deg) translateX(20px) translateY(40px);
    transition: transform 0.5s ease;
}

.mockup-3d-2:hover {
    transform: perspective(1000px) rotateY(8deg) rotateX(-2deg) translateX(20px) translateY(40px) scale(1.02);
}

.gradient-text {
    background: linear-gradient(135deg, #111111 0%, #444444 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.feature-card.active {
    background: white;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.05);
    border: 1px solid #111111;
}

.feature-card:not(.active) {
    background: transparent;
    border: 1px solid transparent;
}

.feature-card:not(.active):hover {
    background: rgba(255,255,255,0.5);
}

.hover-card {
    transition: all 0.3s ease;
}

.hover-card:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 20px 40px -10px rgba(0,0,0,0.1);
}

.app-store-btn {
    transition: all 0.3s ease;
}

.app-store-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px -5px rgba(0,0,0,0.15);
}

.social-icon {
    transition: all 0.3s ease;
}

.social-icon:hover {
    transform: translateY(-2px);
    opacity: 0.7;
}

.nav-link {
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: #111111;
    transition: width 0.3s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.progress-bar {
    height: 8px;
    border-radius: 4px;
    background: #E5E5E5;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 1s ease;
}

.circular-progress {
    transform: rotate(-90deg);
    transform-origin: 50% 50%;
}

.circular-progress-circle {
    transition: stroke-dashoffset 1s ease;
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float 6s ease-in-out 2s infinite;
}

.mobile-menu {
    transform: translateX(100%);
    transition: transform 0.3s ease;
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-overlay {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.mobile-overlay.open {
    opacity: 1;
    visibility: visible;
}

.hamburger span {
    transition: all 0.3s ease;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.glow-ring {
    filter: drop-shadow(0 0 8px rgba(255,255,255,0.1));
}

.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 100;
}
.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}
.sidebar-panel {
    position: fixed;
    top: 0;
    right: -400px;
    width: 380px;
    max-width: 90vw;
    height: 100vh;
    background: white;
    box-shadow: -10px 0 40px rgba(0,0,0,0.1);
    transition: right 0.4s cubic-bezier(0.22, 1, 0.36, 1);
    z-index: 101;
    padding: 2rem;
    display: flex;
    flex-direction: column;
}
.sidebar-panel.active {
    right: 0;
}
.sidebar-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.2s;
    background: none;
    border: none;
}
.sidebar-close:hover {
    background: #f3f3f3;
}