body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: #f9fafb;     min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.dark body {
    background-color: #111827; }

#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;     background-color: #f9fafb;
    transition: background-color 0.3s ease;
}

#cursor-particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
        z-index: 101;
    pointer-events: none; }

.dark #particle-canvas {
    background-color: #111827; }


.theme-toggle {
    position: relative;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.theme-icon-wrapper {
    position: relative;
    width: 20px;     height: 20px;
}
.theme-toggle .icon-moon,
.theme-toggle .icon-sun {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), 
                opacity 0.3s ease;
}

.theme-toggle .icon-moon {
    transform: rotate(0deg) scale(1);
    opacity: 1;
}
.theme-toggle .icon-sun {
    transform: rotate(180deg) scale(0);
    opacity: 0;
}

.dark .theme-toggle .icon-moon {
    transform: rotate(-180deg) scale(0);
    opacity: 0;
}
.dark .theme-toggle .icon-sun {
    transform: rotate(0deg) scale(1);
    opacity: 1;
}


header.scrolled {
    background-color: rgba(255, 255, 255, 0.8);     backdrop-filter: blur(8px);
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);     transition: background-color 0.3s ease;
}

.dark header.scrolled {
    background-color: rgba(17, 24, 39, 0.8); }

.fade-in-up {
    opacity: 0;
    transform: translateY(30px);
    filter: blur(3px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                filter 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-up.is-visible {
    opacity: 1;
    transform: translateY(0);
    filter: blur(0px);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);     filter: blur(3px);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                filter 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.fade-in-right.is-visible {
    opacity: 1;
    transform: translateX(0);
    filter: blur(0px);
}


.nav-link {
    position: relative;
    transition: color 0.3s ease;
    padding-bottom: 6px; 
}
.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #374151;     transform: scaleX(0);
    transform-origin: center;
    transition: transform 0.4s cubic-bezier(0.23, 1, 0.32, 1), background-color 0.3s ease;
}
.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}
.nav-link.active {
    color: #3B82F6; }

.dark .nav-link.active {
    color: #60A5FA; }
.dark .nav-link::after {
    background-color: #a8a8a8; }


.hamburger-line {
    transition: all 0.3s ease-in-out;
}
#menu-btn.open .line-1 {
    transform: translateY(8px) rotate(45deg);
}
#menu-btn.open .line-2 {
    opacity: 0;
}
#menu-btn.open .line-3 {
    transform: translateY(-8px) rotate(-45deg);
}
#mobile-menu {
    transform: translateX(100%);
    transition: transform 0.5s cubic-bezier(0.23, 1, 0.32, 1), background-color 0.3s ease;
}
#mobile-menu.open {
    transform: translateX(0);
}
#mobile-menu .menu-link {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}
#mobile-menu.open .menu-link {
    opacity: 1;
    transform: translateY(0);
}
#mobile-menu.open .menu-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .menu-link:nth-child(2) { transition-delay: 0.2s; }
#mobile-menu.open .menu-link:nth-child(3) { transition-delay: 0.3s; }

.dark #mobile-menu .menu-link.text-blue-500 {
    color: #60A5FA; }
.dark #mobile-menu .menu-link.text-gray-800 {
        color: #D1D5DB; }


body.menu-open-blur main {
    filter: blur(3px);
    transition: filter 0.5s cubic-bezier(0.23, 1, 0.32, 1);
    pointer-events: none;
    user-select: none;
}
body.menu-open-blur header {
    filter: none;
}

.hero-gradient {
    background: linear-gradient(180deg, rgba(249, 250, 251, 0) 50%, rgba(249, 250, 251, 1) 95%);
    transition: background 0.3s ease;
}
.dark .hero-gradient {
    background: linear-gradient(180deg, rgba(17, 24, 39, 0) 50%, rgba(17, 24, 39, 1) 95%);
}

.hero-bg {
    background-image: url('https://pbs.twimg.com/media/G2ERA4QbMAAXxti?format=jpg&name=large');
    background-size: cover;
    background-position: top center;
}

.hero-text-custom {
        text-shadow: 0 4px 10px rgba(0,0,0,0.1);
    
    -webkit-text-stroke-color: #4b5563;     
    transition: -webkit-text-stroke-color 0.3s ease, color 0.3s ease;
}
.dark .hero-text-custom {
         }


.icon-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 9999px;     background-color: rgba(255, 255, 255, 0.7);
    color: #1f2937;     box-shadow: 0 4px 10px rgba(0, 0, 0, 0.25);
    transition: all 0.3s ease;
    font-size: 20px; }
.icon-link:hover {
    transform: translateY(-4px);
    background-color: white;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    color: #3B82F6; }

.dark .icon-link {
    background-color: rgba(31, 41, 55, 0.7);     color: #D1D5DB;     border: 1px solid #c9d6e6;
}
.dark .icon-link:hover {
    background-color: #374151;     color: #60A5FA; }

@keyframes float-powapowa {
    0% {
        transform: translateY(0px) scale(1);
        opacity: 0.1;
        filter: blur(5px);
    }
    50% {
        transform: translateY(-25px) scale(1.1);
        opacity: 0.5;
        filter: blur(3px);
    }
    100% {
        transform: translateY(0px) scale(1);
        opacity: 0.1;
        filter: blur(5px);
    }
}

.hero-particle-new {
    position: absolute;
    background: rgba(255, 255, 255, 0.4);
    box-shadow: 0 0 20px 10px rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    animation: float-powapowa 10s ease-in-out infinite;
    z-index: 5;
    transition: background 0.3s ease, box-shadow 0.3s ease;
}

.dark .hero-particle-new {
    background: rgba(209, 213, 219, 0.2);     box-shadow: 0 0 20px 10px rgba(209, 213, 219, 0.2); }


.hero-particle-new:nth-child(1) { top: 10%; left: 5%; width: 15px; height: 15px; animation-duration: 12s; animation-delay: -1s; }
.hero-particle-new:nth-child(2) { top: 30%; left: 10%; width: 25px; height: 25px; animation-duration: 10s; animation-delay: -3s; }
.hero-particle-new:nth-child(3) { top: 50%; left: 8%; width: 12px; height: 12px; animation-duration: 14s; animation-delay: -5s; }
.hero-particle-new:nth-child(4) { top: 70%; left: 15%; width: 20px; height: 20px; animation-duration: 9s; animation-delay: -2s; }
.hero-particle-new:nth-child(5) { top: 85%; left: 12%; width: 18px; height: 18px; animation-duration: 11s; animation-delay: -7s; }
.hero-particle-new:nth-child(6) { top: 20%; left: 18%; width: 16px; height: 16px; animation-duration: 13s; animation-delay: -4s; }
.hero-particle-new:nth-child(7) { top: 45%; left: 3%; width: 22px; height: 22px; animation-duration: 10s; animation-delay: -8s; }
.hero-particle-new:nth-child(8) { top: 65%; left: 20%; width: 14px; height: 14px; animation-duration: 12s; animation-delay: -6s; }
.hero-particle-new:nth-child(9) { top: 5%; left: 22%; width: 10px; height: 10px; animation-duration: 9s; animation-delay: -1s; }
.hero-particle-new:nth-child(10) { top: 75%; left: 5%; width: 17px; height: 17px; animation-duration: 11s; animation-delay: -5s; }
.hero-particle-new:nth-child(11) { top: 90%; left: 18%; width: 13px; height: 13px; animation-duration: 14s; animation-delay: -3s; }
.hero-particle-new:nth-child(12) { top: 35%; left: 14%; width: 19px; height: 19px; animation-duration: 10s; animation-delay: -9s; }

.hero-particle-new:nth-child(13) { top: 15%; left: 45%; width: 15px; height: 15px; animation-duration: 11s; animation-delay: -2s; }
.hero-particle-new:nth-child(14) { top: 35%; left: 55%; width: 20px; height: 20px; animation-duration: 13s; animation-delay: -6s; }
.hero-particle-new:nth-child(15) { top: 55%; left: 40%; width: 12px; height: 12px; animation-duration: 10s; animation-delay: -4s; }
.hero-particle-new:nth-child(16) { top: 75%; left: 60%; width: 18px; height: 18px; animation-duration: 12s; animation-delay: -8s; }
.hero-particle-new:nth-child(17) { top: 5%; left: 50%; width: 14px; height: 14px; animation-duration: 9s; animation-delay: -1s; }
.hero-particle-new:nth-child(18) { top: 85%; left: 35%; width: 16px; height: 16px; animation-duration: 11s; animation-delay: -5s; }

.hero-particle-new:nth-child(19) { top: 12%; left: 95%; width: 15px; height: 15px; animation-duration: 12s; animation-delay: -1.5s; }
.hero-particle-new:nth-child(20) { top: 32%; left: 90%; width: 25px; height: 25px; animation-duration: 10s; animation-delay: -3.5s; }
.hero-particle-new:nth-child(21) { top: 52%; left: 92%; width: 12px; height: 12px; animation-duration: 14s; animation-delay: -5.5s; }
.hero-particle-new:nth-child(22) { top: 72%; left: 85%; width: 20px; height: 20px; animation-duration: 9s; animation-delay: -2.5s; }
.hero-particle-new:nth-child(23) { top: 87%; left: 88%; width: 18px; height: 18px; animation-duration: 11s; animation-delay: -7.5s; }
.hero-particle-new:nth-child(24) { top: 22%; left: 82%; width: 16px; height: 16px; animation-duration: 13s; animation-delay: -4.5s; }
.hero-particle-new:nth-child(25) { top: 47%; left: 97%; width: 22px; height: 22px; animation-duration: 10s; animation-delay: -8.5s; }
.hero-particle-new:nth-child(26) { top: 67%; left: 80%; width: 14px; height: 14px; animation-duration: 12s; animation-delay: -6.5s; }
.hero-particle-new:nth-child(27) { top: 7%; left: 78%; width: 10px; height: 10px; animation-duration: 9s; animation-delay: -1.5s; }
.hero-particle-new:nth-child(28) { top: 77%; left: 95%; width: 17px; height: 17px; animation-duration: 11s; animation-delay: -5.5s; }
.hero-particle-new:nth-child(29) { top: 92%; left: 82%; width: 13px; height: 13px; animation-duration: 14s; animation-delay: -3.5s; }
.hero-particle-new:nth-child(30) { top: 37%; left: 86%; width: 19px; height: 19px; animation-duration: 10s; animation-delay: -9.5s; }



@keyframes hero-deco-float {
    0% { transform: translateY(0px) rotate(0deg); opacity: 0; }
    50% { opacity: 0.3; } 
    100% { transform: translateY(-30px) rotate(15deg); opacity: 0; }
}
.hero-decoration {
    position: absolute;
    top: 0;
    bottom: 0;
    width: 40%;
}
.hero-decoration.left { left: 0; }
.hero-decoration.right { right: 0; }
.hero-decoration .shape {
    position: absolute;
    background-color: #ffffff43;     border-radius: 30% 70% 70% 30% / 30% 30% 70% 70%; 
    animation: hero-deco-float 12s ease-in-out infinite;
    filter: blur(10px); 
    }
.hero-decoration.left .shape-1 {
    width: 150px; height: 150px;
    top: 30%; left: 25%;
    animation-delay: 0s;
}
.hero-decoration.left .shape-2 {
    width: 80px; height: 80px;
    top: 60%; left: 45%;
    transform: rotate(90deg);
    animation-delay: 4s;
}
.hero-decoration.right .shape-3 {
    width: 120px; height: 120px;
    top: 25%; right: 30%;
    animation-delay: 2s;
}
.hero-decoration.right .shape-4 {
    width: 200px; height: 200px;
    top: 55%; right: 40%;
    transform: rotate(-90deg);
    animation-delay: 6s;
}

.avatar-hover-effect {
    transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}
.avatar-hover-effect:hover {
    transform: translateY(-8px) scale(1.05);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
}
.dark .avatar-hover-effect:hover {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.3); }


.history-bg {
    background-color: transparent;
}
.timeline-horizontal {
    padding-top: 6rem;
    padding-bottom: 6rem;
    position: relative;
}
.timeline-arrow-wrapper {
    position: absolute;
    top: 50%;
    left: 0;
    transform: translateY(-50%);
    width: 100%;
    height: 2rem; 
    display: flex;
    align-items: center;
}

.arrow-segment {
    position: relative;
    width: calc((100% - 5.25rem) / 4); 
    height: 100%;
    margin-right: 1.75rem; 
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.5s ease;
    z-index: 1; 
    background-color:#3c4c62;
}
.dark .arrow-segment {
    background-color: #3c4c62;
}


.arrow-segment::after {
    color: #3c4c62;
    content: '';
    position: absolute;
    right: -1.55rem; 
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 0;
    border-top: 2rem solid transparent;
    border-bottom: 2rem solid transparent;
    border-left: 1.75rem solid currentColor; 
    z-index: 1; 
    transition: color 0.5s ease;
}
.dark .arrow-segment::after {
    color: #3c4c62;
}


.history-line {
    position: absolute;
    top: 0;
    left: 0;
    width: 0; 
    height: 100%; 
    overflow: hidden; 
    transition: width 1.5s cubic-bezier(0.23, 1, 0.32, 1) 0.3s;
    display: flex;
    justify-content: flex-start; 
}
.history-line.animate-draw {
    width: 100%;
}

.history-line .timeline-segment {
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.8s ease-out, background-color 0.3s ease;
}
.history-line.animate-draw .timeline-segment-1 { transition-delay: 0.5s; transform: scaleX(1); }
.history-line.animate-draw .timeline-segment-2 { transition-delay: 0.7s; transform: scaleX(1); }
.history-line.animate-draw .timeline-segment-3 { transition-delay: 0.9s; transform: scaleX(1); }
.history-line.animate-draw .timeline-segment-4 { transition-delay: 1.1s; transform: scaleX(1); }
.history-line.animate-draw .timeline-segment-5 { transition-delay: 1.3s; transform: scaleX(1); }

.timeline-segment-1::after { transition-delay: 0.35s; }
.timeline-segment-2::after { transition-delay: 0.65s; }
.timeline-segment-3::after { transition-delay: 0.85s; }
.timeline-segment-4::after { transition-delay: 1.05s; }
.timeline-segment-5::after { transition-delay: 1.25s; }


.timeline-item {
    position: relative; 
    width: 20%; 
    text-align: center;
    padding: 0 1rem;
    display: flex;
    flex-direction: column;
        z-index: 10;
    transition: z-index 0s 0.3s; }
.timeline-item:hover {
    z-index: 40;
    transition: z-index 0s 0s; }

.timeline-item-top {
    justify-content: flex-end; 
    padding-bottom: 16rem; 
}
.timeline-item-bottom {
    justify-content: flex-start;
    padding-top: 16rem; 
}

.timeline-icon-box {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    
    width: 3.5rem; 
    height: 3.5rem; 
    border-radius: 9999px;
    background-color: #fff;
    border: 4px solid #556884;     color: #556884;     display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem; 
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    transition: all 0.3s ease;
    z-index: 20;
}
.dark .timeline-icon-box {
    background-color: #1f2937;     border-color: #c9d6e6;     color: #c9d6e6;     box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
}


.timeline-item-top .timeline-icon-box {
    top: auto;
    bottom: 10.5rem; 
}
.timeline-item-bottom .timeline-icon-box {
    bottom: auto; 
    top: 10.5rem; 
}

.timeline-icon-box:hover {
    transform: translateX(-50%) translateY(-5px) scale(1.05);
    background-color: #EFF6FF;     box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}
.dark .timeline-icon-box:hover {
    background-color: #374151;     box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}


.timeline-content-wrapper {
    position: relative;
    z-index: 10;
    background-color: #fff;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    border: 2px solid #3c4c62;     transition: all 0.3s ease;
}
.dark .timeline-content-wrapper {
    background-color: #1f2937;     border: 2px solid #939598;     box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
}
.dark .timeline-content-wrapper:hover {
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

.timeline-content-wrapper:hover {
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

.timeline-year {
    font-size: 22px;
    color: #3c4c62;
}
.dark .timeline-year {
    color: #ffffff;
}
.dark .timeline-description {
    color: #D1D5DB; }


.timeline-content-wrapper::after,
.timeline-content-wrapper::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    border-style: solid;
    border-color: transparent; 
    width: 0;
    height: 0;
    transition: border-color 0.3s ease;
}

.timeline-item-top .timeline-content-wrapper::after {
    bottom: -20px; 
    border-width: 10px;
    border-top-color: #3c4c62; }
.timeline-item-top .timeline-content-wrapper::before {
    bottom: -19px; 
    border-width: 10px;
    border-top-color: #fff;     z-index: 1; 
}
.dark .timeline-item-top .timeline-content-wrapper::after {
    border-top-color: #fff;
}
.dark .timeline-item-top .timeline-content-wrapper::before {
    border-top-color: #1f2937; }


.timeline-item-bottom .timeline-content-wrapper::after {
    top: -20px; 
    border-width: 10px;
    border-bottom-color: #3c4c62; }
.timeline-item-bottom .timeline-content-wrapper::before {
    top: -19px; 
    border-width: 10px;
    border-bottom-color: #fff;     z-index: 1; 
}
.dark .timeline-item-bottom .timeline-content-wrapper::after {
    border-bottom-color: #fff;
}
.dark .timeline-item-bottom .timeline-content-wrapper::before {
    border-bottom-color: #1f2937; }


.history-popup-horizontal {
    position: absolute;
    width: 280px;
    background-color: white;
    border-radius: 0.5rem;     box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    z-index: 30;
    
    left: 50%;
    transform: translateX(-50%) scale(0.95) translateY(10px); 
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    pointer-events: none;
}
.dark .history-popup-horizontal {
    background-color: #1f2937;     box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}
.dark .history-popup-horizontal img {
    border-color: #374151 !important; }
.dark .history-popup-horizontal h4 {
    color: #F9FAFB; }
.dark .history-popup-horizontal p {
    color: #9CA3AF; }


.timeline-item-top .history-popup-horizontal img {
    border-radius: 0 0 0.5rem 0.5rem;
    border-bottom: none;
    border-top: 1px solid #e5e7eb;     transition: border-color 0.3s ease;
}
.timeline-item-top .history-popup-horizontal .p-4 {
    border-radius: 0.5rem 0.5rem 0 0; 
}

.timeline-item-bottom .history-popup-horizontal img {
    border-radius: 0.5rem 0.5rem 0 0;
    border-top: none; 
    border-bottom: 1px solid #e5e7eb;     transition: border-color 0.3s ease;
}
.timeline-item-bottom .history-popup-horizontal .p-4 {
    border-radius: 0 0 0.5rem 0.5rem;
}


.history-popup-horizontal::after,
.history-popup-horizontal::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    border-style: solid;
    border-color: transparent;
    width: 0;
    height: 0;
    z-index: 31;
    transition: border-color 0.3s ease;
}

.timeline-item-top .history-popup-horizontal::after {
    top: -20px; 
    border-width: 10px;
    border-bottom-color: #DBEAFE; }
.timeline-item-top .history-popup-horizontal::before {
    top: -19px; 
    border-width: 10px;
    border-bottom-color: #fff;     z-index: 32; 
}
.dark .timeline-item-top .history-popup-horizontal::after {
    border-bottom-color: #1f2937; }
.dark .timeline-item-top .history-popup-horizontal::before {
    border-bottom-color: #1f2937; }

.timeline-item-bottom .history-popup-horizontal::after {
    bottom: -20px; 
    border-width: 10px;
    border-top-color: #DBEAFE; }
.timeline-item-bottom .history-popup-horizontal::before {
    bottom: -19px; 
    border-width: 10px;
    border-top-color: #fff;     z-index: 32; 
}
.dark .timeline-item-bottom .history-popup-horizontal::after {
    border-top-color: #1f2937; }
.dark .timeline-item-bottom .history-popup-horizontal::before {
    border-top-color: #1f2937; }


.timeline-item-top .history-popup-horizontal {
    top: 12.5rem; 
    bottom: auto; 
    transform-origin: top center;
    transform: translateX(-50%) scale(0.95) translateY(-10px);
}
.timeline-item-bottom .history-popup-horizontal {
    bottom: 12.5rem; 
    top: auto; 
    transform-origin: bottom center;
    transform: translateX(-50%) scale(0.95) translateY(10px);
}

.group:hover .history-popup-horizontal {
    opacity: 1;
    transform: translateX(-50%) scale(1) translateY(0); 
    pointer-events: auto;
}



.timeline-vertical {
    padding-left: 2rem; 
}
.history-line-mobile { 
    height: 0; 
    transform-origin: top;
    transition: height 1.5s cubic-bezier(0.23, 1, 0.32, 1) 0.3s, background-color 0.3s ease;
    left: 1.5rem; 
    background-color: #3c4c62; }
.history-line-mobile.animate-draw {
    height: calc(100% - 1.5rem); 
}
.dark .history-line-mobile {
    background-color: #3c4c62; }

.timeline-icon-box-mobile {
    position: absolute;
    left: 0;
    top: 0.5rem; 
    width: 3rem; 
    height: 3rem; 
    border-radius: 9999px;
    background-color: #fff;
        border: 4px solid #556884; 
    color: #556884;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem; 
    box-shadow: 0 2px 4px -1px rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    z-index: 20;
    transition: all 0.3s ease;
}
.dark .timeline-icon-box-mobile {
    background-color: #1f2937;         border-color: #c9d6e6;
    color: #c9d6e6;
}

.timeline-icon-box-mobile:hover {
    transform: scale(1.1);
    background-color: #EFF6FF;     box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}
.dark .timeline-icon-box-mobile:hover {
    background-color: #374151; }

.timeline-content-wrapper-mobile {
    background-color: #fff;
    padding: 1rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
        border: 2px solid #3c4c62;
    transition: all 0.3s ease;
}
.timeline-content-wrapper-mobile:hover {
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
}
.dark .timeline-content-wrapper-mobile {
    background-color: #1f2937;         border: 2px solid #939598;
}
.dark .timeline-content-wrapper-mobile:hover {
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 1px 2px -1px rgb(0 0 0 / 0.3);
}




.history-popup-mobile {
    position: absolute;
    width: calc(100% - 5rem); 
    left: 4.5rem; 
    top: -5rem; 
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    z-index: 30;
    
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, background-color 0.3s ease, box-shadow 0.3s ease;
    pointer-events: none;
}
.dark .history-popup-mobile {
    background-color: #1f2937;     box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

.group:hover .history-popup-mobile {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.gallery-bg {
    background-color: transparent;
}

.gallery-scroller {
    max-width: 100%; 
    overflow: hidden;
    -ms-overflow-style: none; 
    scrollbar-width: none; 
        perspective: 1000px;
        padding: 1rem 0;
}
.gallery-scroller::-webkit-scrollbar {
    display: none; 
}

.gallery-track {
    display: flex;
    width: max-content; 
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

@keyframes scroll-left {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); } 
}
@keyframes scroll-right {
    0% { transform: translateX(-50%); } 
    100% { transform: translateX(0); }
}

[data-direction="left"] .gallery-track {
    animation-name: scroll-left;
    animation-duration: 45s; 
}
[data-direction="right"] .gallery-track {
    animation-name: scroll-right;
    animation-duration: 45s; 
}

.gallery-scroller-item {
    height: 350px; 
    width: 450px; 
    flex-shrink: 0;
    margin: 0 0.75rem; 
    border-radius: 0.5rem; 
    overflow: hidden; 
    position: relative; 
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);     
        transition: transform 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                box-shadow 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    cursor: pointer;
        transform-style: preserve-3d;
}
.dark .gallery-scroller-item {
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
}


.gallery-scroller-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
        transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                filter 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-scroller-item.is-portrait {
    width: 280px;
}

.gallery-scroller-item::before,
.gallery-scroller-item::after {
    content: '';
    position: absolute;
    box-sizing: border-box; 
    width: 0;
    height: 0;
        border: 5px solid transparent; 
    border-radius: 0.5rem; 
        transition: width 0.3s ease-out, 
                height 0.3s ease-out,
                border-color 0.3s ease-out;
        z-index: 10;
}

.gallery-scroller-item::before {
    top: 0;
    left: 0;
    border-top-color: transparent;
    border-left-color: transparent;
        transition-delay: 0s; }

.gallery-scroller-item::after {
    bottom: 0;
    right: 0;
    border-bottom-color: transparent;
    border-right-color: transparent;
        transition-delay: 0s; }

.gallery-scroller-item .image-overlay {
    content: '';
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to top, rgba(0,0,0,0.5) 0%, rgba(0,0,0,0) 60%);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 5; }

.gallery-scroller-item:hover::before {
    width: 100%;
    height: 100%;
        border-top-color: #ffffffaa;     border-left-color: #ffffffaa;         transition-delay: 0.3s, 0s, 0s; }
.gallery-scroller-item:hover::after {
    width: 100%;
    height: 100%;
        border-bottom-color: #ffffffaa;     border-right-color: #ffffffaa;         transition-delay: 0.3s, 0s, 0s; }

.dark .gallery-scroller-item:hover::before {
        border-top-color: #ffffffaa;     border-left-color: #ffffffaa; }
.dark .gallery-scroller-item:hover::after {
        border-bottom-color: #ffffffaa;     border-right-color: #ffffffaa; }


.gallery-scroller-item:hover {
        transform: scale(1.03); 
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1); }
.gallery-scroller:nth-of-type(odd) .gallery-scroller-item:hover {
        transform: scale(1.03); 
}

.gallery-scroller-item:hover img {
    transform: scale(1.15);
    filter: blur(1px);
    transition: transform 2s cubic-bezier(0.22, 1, 0.36, 1), 
                filter 2s cubic-bezier(0.22, 1, 0.36, 1);
}

.gallery-scroller-item:hover .image-overlay {
    opacity: 1;
}

.gallery-scroller-item .zoom-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.5);
    font-size: 3rem;
    color: white;
    opacity: 0;
    transition: opacity 0.4s ease 0.1s, transform 0.4s cubic-bezier(0.23, 1, 0.32, 1) 0.1s;
    z-index: 15;
    text-shadow: 0 2px 5px rgba(0,0,0,0.5);
}
.gallery-scroller-item:hover .zoom-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.dark .gallery-scroller-item .zoom-icon {
    color:white;
}


.lightbox-overlay {
    position: fixed;
    inset: 0; 
    background-color: rgba(0, 0, 0, 0.85);     backdrop-filter: blur(8px);
    z-index: 100;
    display: none; 
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    cursor: pointer; 
}
.dark .lightbox-overlay {
    background-color: rgba(0, 0, 0, 0.85);
}


.lightbox-overlay.show {
    display: flex; 
    opacity: 1;
}

.lightbox-content {
    position: relative;
    width: 90%;
    height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain; 
    border-radius: 0.5rem; 
    box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.2), 0 8px 10px -6px rgb(0 0 0 / 0.1);
}

.lightbox-close-btn {
    position: absolute;
    top: 2rem;
    right: 2rem;
    font-size: 3rem; 
    font-weight: 300; 
    color: white;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    z-index: 101;
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0.7;
}

.lightbox-close-btn:hover {
    transform: scale(1.1);
    opacity: 1;
}

body.lightbox-open {
    overflow: hidden;
}


footer {
    position: relative;
    z-index: 1;
}

.footer-bg {
    background-color: #ffffff;     border: 1px solid #1f29378e;     transition: background-color 0.3s ease, border-color 0.3s ease;
    z-index: 1;
}
.dark .footer-bg {
    background-color: #111827;     border: 1px solid #525252; }

.heading-animate-line {
    position: relative;
    display: inline-block;     padding-left: 1rem;
    padding-right: 1rem;
    transition: color 0.3s ease; }

.heading-animate-line::before,
.heading-animate-line::after {
    content: '';
    position: absolute;
    top: 50%;
    height: 2px;     width: 0;     background-color: #404040;     
        transition: background-color 0.3s ease;
}

.dark .heading-animate-line::before,
.dark .heading-animate-line::after {
    background-color: #b1b1b1; }

.heading-animate-line::before {
    left: 0.2rem;     transform: translateY(-50%) translateX(-100%); }

.heading-animate-line::after {
    right: 0.2rem;     transform: translateY(-50%) translateX(100%); }

.fade-in-up.is-visible .heading-animate-line::before {
    width: 80px;     transform: translateY(-50%) translateX(-100%); 
    
        transition: width 1.2s cubic-bezier(0.23, 1, 0.32, 1) 0.4s, 
                background-color 0.3s ease;
}

.fade-in-up.is-visible .heading-animate-line::after {
    width: 80px;
    transform: translateY(-50%) translateX(100%); 

        transition: width 1.2s cubic-bezier(0.23, 1, 0.32, 1) 0.4s, 
                background-color 0.3s ease;
}

@media (max-width: 640px) {
    .fade-in-up.is-visible .heading-animate-line::before,
    .fade-in-up.is-visible .heading-animate-line::after {
        width: 50px;

                transition: width 1.2s cubic-bezier(0.23, 1, 0.32, 1) 0.4s, 
                    background-color 0.3s ease;
    }
}


.about-card-container {
    position: relative;     border-radius: 0.75rem;         z-index: 1;     backdrop-filter: blur(3.5px);     
        box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    
        transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94), 
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                filter 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.3s ease;
}

.about-card-content {
        background-color: rgba(255, 255, 255, 0.0); 
        display: flex;
    flex-direction: column;     align-items: center;     padding: 2.5rem;     
        transition: background-color 0.3s ease;

        border-radius: 0.75rem; }

.about-card-container::before {
    content: '';
    position: absolute;
    inset: 0;
    
        padding: 3px;     
        background: linear-gradient(to bottom right, #93c4fdcc, #D8B4FEcc, #FBCFE8cc);     
        -webkit-mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    mask: 
        linear-gradient(#fff 0 0) content-box, 
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;     mask-composite: exclude; 
        border-radius: 0.75rem; 
        z-index: 1;     pointer-events: none;
    transition: background 0.3s ease;
}

@media (min-width: 768px) {     .about-card-content {
        flex-direction: row;         align-items: flex-start;         column-gap: 2rem;     }
}


.dark .about-card-content {
        background-color: rgba(17, 24, 39, 0.0); }

.dark .about-card-container {
        box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
}

.dark .about-card-container::before {
        background: linear-gradient(to bottom right, #2564ebaa, #A855F7aa, #D946EFaa); }