/* ===== Custom Top Navigation (Restored) ===== */
.top-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(8, 13, 24, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    z-index: 1040;
    padding: 12px 0;
    transition: transform 0.4s ease;
}
.top-navbar.hidden {
    transform: translateY(-100%);
}
.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 30px;
    position: relative;
}
.location-marker {
    display: flex;
    align-items: center;
    color: #5a6680;
    font-size: 0.9rem;
    margin-left: auto;
}
.location-marker i {
    margin-right: 8px;
    color: #00cc00;
}
.personal-logo {
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
}
.logo-circle {
    width: 40px; height: 40px;
    border-radius: 50%;
    background: radial-gradient(circle at center, #00cc00, #008800);
    display: flex; justify-content: center; align-items: center;
    box-shadow: 0 2px 8px rgba(0, 170, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.logo-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 170, 0, 0.5);
}
.logo-letter {
    color: #e8ecf1;
    font-weight: 700;
    font-size: 1.2rem;
}
.logo-name {
    color: #9aa4b8;
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1px;
    transition: color 0.3s ease;
}
.personal-logo:hover .logo-name {
    color: #e8ecf1;
}

/* Desktop nav menu - centered */
.nav-menu {
    display: flex;
    gap: 30px;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}
.nav-menu a {
    color: #5a6680;
    text-decoration: none;
    font-size: 0.9rem;
    position: relative;
    padding-bottom: 5px;
    transition: color 0.3s ease;
}
.nav-menu a:hover {
    color: #e8ecf1;
}
.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -0.1em;
    left: 0;
    width: 0;
    height: 1px;
    background-color: #e8ecf1;
    transition: width 0.3s ease;
}
.nav-menu a:hover::after {
    width: 100%;
}

/* Mobile menu button */
.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: #5a6680;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 8px;
    transition: color 0.3s ease;
}
.mobile-menu-btn:hover {
    color: #e8ecf1;
}
.mobile-menu-btn i {
    transition: transform 0.3s ease, opacity 0.3s ease;
}
.mobile-menu-btn.active i {
    transform: rotate(90deg);
}

/* Mobile dropdown */
.mobile-dropdown {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: rgba(8, 13, 24, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-top: none;
    padding: 30px 20px;
    flex-direction: column;
    gap: 20px;
    z-index: 1041;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.5);
    box-sizing: border-box;
}
.mobile-dropdown a {
    color: #5a6680;
    text-decoration: none;
    font-size: 1.1rem;
    padding: 10px 0;
    transition: color 0.3s ease;
    text-align: center;
}
.mobile-dropdown a:hover {
    color: #e8ecf1;
}
.mobile-location {
    display: flex;
    justify-content: center;
    align-items: center;
    color: #5a6680;
    font-size: 1rem;
    padding-top: 15px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin-top: 15px;
}
.mobile-location i {
    margin-right: 8px;
    color: #00cc00;
}

/* Hide Kayden header when our nav is present */
.kayden-header {
    display: none !important;
}

/* Responsive */
@media (max-width: 768px) {
    .top-navbar {
        padding: 10px 0;
    }
    .nav-container {
        padding: 0 15px;
    }
    .location-marker {
        display: none;
    }
    .personal-logo {
        gap: 18px;
        margin-right: auto;
    }
    .logo-circle {
        width: 32px; height: 32px;
    }
    .logo-letter {
        font-size: 1rem;
    }
    .logo-name {
        font-size: 0.8rem;
    }
    .nav-menu {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
    }
    .mobile-dropdown.active {
        display: flex;
    }
}

/* ===== Optimized Section Headings ===== */
/* Center heading + kill ALL underlines */
.heading h2.kayden-underline-left {
    display: table !important;
    margin-left: auto !important;
    margin-right: auto !important;
}
.heading h2.kayden-underline-left::after {
    display: none !important;
}
/* Kill all heading hover underlines */
.heading h2 {
    background-image: none !important;
    background-size: 0 0 !important;
}
.heading:hover h2 {
    background-size: 0 0 !important;
}

/* Nav hover underline stays */
.nav-menu a::after {
    display: block;
}

/* Section heading block spacing */
.heading {
    margin-bottom: 3rem !important;
    perspective: 500px;
}

.heading h2 {
    margin-bottom: 0.5rem !important;
    letter-spacing: 0.06em;
}

/* ===== Navbar: black-to-transparent gradient ===== */
.top-navbar {
    background: linear-gradient(to bottom, #000, transparent) !important;
    border-bottom: none !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* ===== Interiox-style Project Cards ===== */
.project-card {
    display: block;
    position: relative;
    overflow: hidden;
    border-radius: 0;
    text-decoration: none;
    color: #fff;
    height: 320px;
}
/* Large featured cards */
.project-card.large {
    height: 460px;
}
/* Small cards */
.project-card.small {
    height: 240px;
}

.project-card .project-card-img {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.project-card .project-card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.project-card:hover .project-card-img img {
    transform: scale(1.1);
}

/* Dark overlay */
.project-card .project-card-img .project-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.15) 50%, rgba(0,0,0,0) 100%);
    transition: background 0.4s ease;
}

.project-card:hover .project-card-overlay {
    background: linear-gradient(to top, rgba(0,0,0,0.95) 0%, rgba(0,0,0,0.4) 60%, rgba(0,0,0,0.1) 100%);
}

/* Title + category (always visible, at bottom-right) */
.project-card .project-card-content {
    position: absolute;
    bottom: 28px;
    right: 28px;
    text-align: right;
    z-index: 2;
    transition: bottom 0.4s ease;
}

.project-card:hover .project-card-content {
    bottom: 80px;
}

.project-card .project-card-cat {
    display: block;
    color: #00cc00;
    font-size: 0.75rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin-bottom: 6px;
}

.project-card .project-card-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    color: #fff;
}

/* Caption (hidden, appears on hover) */
.project-card .project-card-caption {
    position: absolute;
    left: 28px;
    right: 28px;
    bottom: 0;
    z-index: 3;
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 18px;
    text-align: right;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
}

.project-card:hover .project-card-caption {
    opacity: 1;
    visibility: visible;
    bottom: 30px;
}

.project-card .project-card-btn {
    display: inline-block;
    color: #fff;
    font-size: 0.78rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 6px 16px;
    border: 1px solid rgba(255,255,255,0.4);
    transition: all 0.3s ease;
}

.project-card .project-card-btn:hover {
    background: #00cc00;
    border-color: #00cc00;
    color: #fff;
}

/* ===== Bilingual Heading: 3D Z-axis flip ===== */
.bilingual {
    position: relative;
    display: inline-block;
    vertical-align: top;
    transform-style: preserve-3d;
}

/* Both texts share same 3D space + hinge */
.bilingual .h-en,
.bilingual .h-zh {
    display: block;
    white-space: nowrap;
    backface-visibility: hidden;
    transform-origin: center center -0.6em;
    transition: transform 0.65s cubic-bezier(0.33, 1, 0.68, 1), opacity 0.3s ease;
    user-select: none;
}

/* EN: visible front */
.bilingual .h-en {
    position: relative;
    transform: rotateX(0deg);
    opacity: 1;
}

.bilingual:hover .h-en {
    transform: rotateX(90deg);
    opacity: 0;
}

/* ZH: hidden behind hinge, flips up into view */
.bilingual .h-zh {
    position: absolute;
    inset: 0;
    text-align: center;
    text-transform: none;
    letter-spacing: 0.04em;
    font-weight: 500;
    transform: rotateX(-90deg);
    opacity: 0;
}

.bilingual:hover .h-zh {
    transform: rotateX(0deg);
    opacity: 1;
}

/* ===== Progress bar: breathing stretch effect ===== */
.progress-bar {
    background-color: #00cc00 !important;
    transform-origin: left center;
    animation: skillBreathe 2.5s ease-in-out infinite;
}
/* Staggered delays via parent wrappers */
.skills_container > div:nth-child(1) .progress-bar { animation-delay: 0s; }
.skills_container > div:nth-child(2) .progress-bar { animation-delay: 0.6s; }
.skills_container > div:nth-child(3) .progress-bar { animation-delay: 1.2s; }
.skills_container > div:nth-child(4) .progress-bar { animation-delay: 1.8s; }

@keyframes skillBreathe {
    0%   { transform: scaleX(1); }
    30%  { transform: scaleX(1.04); }
    60%  { transform: scaleX(1); }
    80%  { transform: scaleX(1.02); }
    100% { transform: scaleX(1); }
}

@media (max-width: 768px) {
    .project-card,
    .project-card.large,
    .project-card.small {
        height: 260px;
    }
    .project-card .project-card-title {
        font-size: 1rem;
    }
    .project-card .project-card-content {
        bottom: 18px;
        right: 18px;
    }
    .project-card .project-card-caption {
        left: 18px;
        right: 18px;
    }
    .project-card .project-card-cat {
        font-size: 0.68rem;
    }
}

/* ===== Back-to-top button: green fill + white icon ===== */
.toTop {
    background: #00cc00 !important;
    color: #fff !important;
    border: none !important;
    border-radius: 50% !important;
    width: 44px !important;
    height: 44px !important;
    line-height: 44px !important;
    font-size: 1rem !important;
    transition: transform 0.3s ease !important;
    display: flex !important;
    align-items: center;
    justify-content: center;
}
.toTop:hover {
    background: #00dd00 !important;
    color: #fff !important;
    transform: scale(1.15);
}

/* ===== Remove all green glow shadows ===== */
.advantage-card:hover,
.timeline-card:hover,
.edu-item:hover,
.brief-item:hover,
.project-card-link:hover,
.gtn-meta-row:hover,
.gtn-stream > img:hover,
.gtn-row-img img:hover,
.contact-qr img:hover,
.skill-tag.highlight:hover {
    box-shadow: none !important;
}
.project-card-link:hover {
    border-color: rgba(255,255,255,0.15) !important;
}

/* Body: pure black */
body {
    background-color: #000 !important;
}

.heading h2 + p {
    margin-top: 0;
    text-align: center;
    color: #5a6680;
}

/* ===== Scroll indicator responsive ===== */
.scroll-down-link .scroll-title {
    text-align: center;
    margin-bottom: 6px;
}
.scroll-down-link .scroll-mouse {
    margin: 0 auto;
}
/* Mobile swipe indicator */
.scroll-swipe {
    text-align: center;
    animation: swipeBounce 1.6s ease-in-out infinite;
}
.scroll-swipe i {
    font-size: 1.2rem;
    color: #5a6680;
}
@keyframes swipeBounce {
    0%, 100% { transform: translateY(0); opacity: 0.4; }
    50% { transform: translateY(8px); opacity: 1; }
}

/* ===== Typewriter text animation ===== */
.typewriter-wrap {
    display: inline-block;
    width: 6em;
    text-align: center;
    vertical-align: top;
}
.typewriter-text {
    display: inline-block;
    overflow: hidden;
    white-space: nowrap;
    border-right: 2px solid transparent;
    animation: typing 0.6s steps(4) 1s both, cursorHide 0s 1.6s forwards;
}
@keyframes typing {
    from { max-width: 0; border-right-color: #00cc00; }
    to { max-width: 6em; border-right-color: #00cc00; }
}
@keyframes cursorHide {
    to { border-right-color: transparent; }
}

/* ===== Fixed-width counter ===== */
.tmcounter {
    display: inline-block;
    min-width: 1.4em;
    text-align: center;
}



/* ===== Clean skill icon grid ===== */
.skill-icon-item {
    display: flex; flex-direction: column; align-items: center; gap: 18px;
    padding: 36px 20px;
    transition: transform 0.3s ease;
}
.skill-flip-card {
    perspective: 600px;
    width: 100%;
    height: 150px;
}
.skill-flip-inner {
    position: relative;
    width: 100%; height: 100%;
    transition: transform 0.5s ease;
    transform-style: preserve-3d;
}
.skill-flip-card:hover .skill-flip-inner {
    transform: rotateY(-180deg);
}
.skill-flip-front, .skill-flip-back {
    position: absolute;
    inset: 0;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 12px 0;
}
.skill-flip-front img { width: 96px; height: 96px; }
.skill-flip-front i { font-size: 96px !important; }
.skill-flip-front span { font-size: 0.85rem; color: #5a6680; letter-spacing: 0.04em; }
.skill-flip-back {
    transform: rotateY(180deg);
    border-radius: 12px;
    padding-top: 0;
    gap: 10px;
}
.skill-flip-back::before {
    content: '';
    width: 96px; height: 96px;
    display: block;
    visibility: hidden;
}
.skill-pct {
    font-size: 4rem;
    font-weight: 700;
    color: #e8ecf1;
    line-height: 96px;
}
.skill-pct-label {
    font-size: 0.85rem;
    color: #5a6680;
    letter-spacing: 0.04em;
}

/* ===== Weblance-style Tools Cards ===== */
.tools-item-list {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}
.tools-item {
    position: relative;
    width: calc(33.33% - 20px);
    display: flex;
    flex-wrap: wrap;
    align-content: center;
    gap: 20px;
    background: linear-gradient(150deg, #111 0%, #000 100%);
    border: 1px solid rgba(255,255,255,0.06);
    border-radius: 16px;
    padding: 24px;
    overflow: hidden;
    transition: border-color 0.3s ease, transform 0.3s ease;
}
.tools-item:hover {
    border-color: rgba(0,204,0,0.3);
    transform: translateY(-2px);
}
.tools-icon-box {
    width: 64px;
    height: 64px;
    background: rgba(255,255,255,0.04);
    border-radius: 8px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}
.tools-icon-box img {
    width: 100%;
    max-width: 40px;
    max-height: 40px;
}
.tools-item-content {
    width: calc(100% - 84px);
}
.tools-item-content h3 {
    font-size: 18px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 18px;
    color: #e8ecf1;
    margin-bottom: 8px;
}
.tools-item-content h3 span {
    color: #00cc00;
    font-size: 0.85rem;
    font-weight: 500;
}
.tools-item-content p {
    border-top: 1px solid rgba(255,255,255,0.06);
    padding-top: 12px;
    margin: 0;
    font-size: 0.82rem;
    color: #5a6680;
    line-height: 1.6;
}

@media (max-width: 992px) {
    .tools-item { width: calc(50% - 15px); }
}
@media (max-width: 576px) {
    .tools-item { width: 100%; }
    .tools-icon-box { width: 50px; height: 50px; }
    .tools-item-content { width: calc(100% - 70px); }
}

/* ===== Mouse Cursor ===== */
.cb-cursor {
    position: fixed; top: 0; left: 0; z-index: 9999;
    pointer-events: none; will-change: transform;
    transition: opacity 0.3s;
    mix-blend-mode: difference;
}
.cb-cursor:before {
    content: "";
    position: absolute; top: -6px; left: -6px;
    width: 12px; height: 12px;
    background: #00cc00;
    border-radius: 50%;
    transform: scale(0);
    transition: transform 0.3s ease;
}
.cb-cursor.-visible:before {
    transform: scale(1);
}
.cb-cursor.-active:before {
    transform: scale(1.5);
}

/* Ripple ring */
.cb-cursor.-moving:after { animation: none; opacity: 0; }
.cb-cursor:after {
    content: '';
    position: absolute; top: -6px; left: -6px;
    width: 12px; height: 12px;
    border: 0.5px solid #00cc00;
    border-radius: 50%;
    opacity: 0;
    animation: cursorRipple 2.5s ease-out infinite;
}
@keyframes cursorRipple {
    0% { transform: scale(1); opacity: 0.5; }
    60% { transform: scale(10); opacity: 0; }
    100% { transform: scale(10); opacity: 0; }
}

@media (max-width: 768px) {
    .cb-cursor { display: none; }
}

/* ===== Outline badge: matches btn-outline-primary ===== */
.badge.outline-badge {
    background: transparent !important;
    color: #00cc00 !important;
    border: 1px solid #00cc00;
    border-radius: 50px;
    padding: 5px 16px;
    font-size: 0.82rem;
    font-weight: 400;
    transition: all 0.3s ease;
}
.badge.outline-badge:hover {
    background: #00cc00 !important;
    color: #fff !important;
}

/* ===== Contact popup ===== */
.contact-popup-overlay {
    position: fixed; inset: 0; z-index: 9999;
    background: rgba(0,0,0,0.7);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}
.contact-popup-overlay.active {
    opacity: 1; visibility: visible;
}
.contact-popup-box {
    position: relative;
    background: #0d0d0d;
    border: 1px solid #00cc00;
    border-radius: 16px;
    padding: 36px 40px;
    text-align: center;
    max-width: 360px;
    width: 90%;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}
.contact-popup-overlay.active .contact-popup-box {
    transform: scale(1);
}
.contact-popup-close {
    position: absolute; top: 10px; right: 14px;
    background: none; border: none;
    color: #5a6680; font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}
.contact-popup-close:hover { color: #00cc00; }
.contact-popup-content { color: #e8ecf1; }