.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-navbar);
    height: var(--nav-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 0 clamp(18px, 3.4vw, 48px);
    background: linear-gradient(180deg, rgba(7, 8, 13, 0.88), rgba(7, 8, 13, 0.45));
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border);
}

.nav-logo {
    position: relative;
    z-index: 602;
}

.nav-logo-mark {
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 0.01em;
    background: var(--gradient-main);
    background-size: 200% 200%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: gradient-pan 8s ease infinite;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 2px;
}

.nav-link {
    position: relative;
    display: inline-flex;
    align-items: baseline;
    gap: 6px;
    padding: 10px 13px;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

.nav-link-num {
    font-size: 8.5px;
    color: var(--text-muted);
    letter-spacing: 0.1em;
    transition: color 0.3s ease;
}

.nav-link::after {
    content: "";
    position: absolute;
    left: 13px;
    right: 13px;
    bottom: 4px;
    height: 1.5px;
    border-radius: 2px;
    background: var(--gradient-main);
    transform: scaleX(0);
    transform-origin: left center;
    transition: transform 0.4s var(--ease-out);
}

.nav-link:hover,
.nav-link:focus-visible {
    color: var(--text-primary);
}

.nav-link:hover .nav-link-num {
    color: var(--accent);
}

.nav-link.is-active {
    color: var(--text-primary);
}

.nav-link.is-active .nav-link-num {
    color: var(--primary-light);
}

.nav-link.is-active::after {
    transform: scaleX(1);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon-sound-on { display: none; }
.sound-toggle.is-on .icon-sound-on { display: block; }
.sound-toggle.is-on .icon-sound-off { display: none; }
.sound-toggle.is-on {
    color: var(--accent);
    border-color: rgba(34, 211, 238, 0.4);
}

.sound-toggle {
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    color: var(--text-secondary);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    transition: color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.sound-toggle:hover {
    color: var(--text-primary);
    box-shadow: var(--shadow-glow-accent);
}

.sound-toggle svg {
    width: 17px;
    height: 17px;
}

.nav-burger {
    position: relative;
    z-index: 602;
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 6px;
    width: 42px;
    height: 42px;
    padding: 10px;
    border-radius: 12px;
    background: var(--bg-glass);
    border: 1px solid var(--border);
}

.nav-burger span {
    display: block;
    height: 1.6px;
    width: 100%;
    border-radius: 2px;
    background: var(--text-primary);
    transition: transform 0.4s var(--ease-out), opacity 0.3s ease;
}

.nav-burger[aria-expanded="true"] span:nth-child(1) {
    transform: translateY(3.8px) rotate(45deg);
}

.nav-burger[aria-expanded="true"] span:nth-child(2) {
    transform: translateY(-3.8px) rotate(-45deg);
}

.book-navigation {
    position: fixed;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-booknav);
    height: var(--booknav-height);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: clamp(14px, 3vw, 30px);
    padding: 0 20px env(safe-area-inset-bottom);
}

.book-nav-btn {
    display: inline-flex;
    align-items: center;
    gap: 9px;
    padding: 11px 18px;
    border-radius: 99px;
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-primary);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: border-color 0.3s ease, box-shadow 0.3s ease, opacity 0.3s ease, transform 0.3s ease;
}

.book-nav-btn svg {
    width: 15px;
    height: 15px;
    transition: transform 0.35s var(--ease-out);
}

.book-nav-btn:hover:not(:disabled) {
    border-color: rgba(99, 102, 241, 0.5);
    box-shadow: var(--shadow-glow-primary);
    transform: translateY(-2px);
}

#prev-page:hover:not(:disabled) svg {
    transform: translateX(-3px);
}

#next-page:hover:not(:disabled) svg {
    transform: translateX(3px);
}

.book-nav-btn:disabled {
    opacity: 0.32;
    cursor: not-allowed;
}

.book-nav-indicator {
    display: inline-flex;
    align-items: baseline;
    gap: 7px;
    padding: 10px 20px;
    border-radius: 99px;
    font-family: var(--font-display);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
}

.page-indicator-current {
    position: relative;
    display: inline-block;
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    overflow: hidden;
}

.page-indicator-sep,
.page-indicator-total {
    font-size: 12px;
    color: var(--text-muted);
}

.btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 24px;
    border-radius: 14px;
    font-family: var(--font-display);
    font-size: 11.5px;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    border: 1px solid transparent;
    overflow: hidden;
    transition: transform 0.3s var(--ease-out), box-shadow 0.35s ease, border-color 0.3s ease, background-color 0.3s ease;
    will-change: transform;
}

.btn svg {
    width: 15px;
    height: 15px;
    transition: transform 0.35s var(--ease-out);
}

.btn:hover svg {
    transform: translateX(3px);
}

.btn-primary {
    color: #fff;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    background-size: 160% 160%;
    box-shadow: 0 8px 24px rgba(99, 102, 241, 0.35);
}

.btn-primary::before {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    width: 40%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.28), transparent);
    transform: translateX(-130%) skewX(-18deg);
}

.btn-primary:hover {
    background-position: 100% 100%;
    box-shadow: 0 12px 34px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover::before {
    animation: sheen-sweep 0.9s var(--ease-out);
}

.btn-ghost {
    color: var(--text-primary);
    background: var(--bg-glass);
    border-color: var(--border-strong);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.btn-ghost:hover {
    border-color: rgba(34, 211, 238, 0.5);
    box-shadow: var(--shadow-glow-accent);
}

.btn-ghost:hover svg {
    transform: translateY(2px);
}

.btn-block {
    width: 100%;
}

.btn-spinner {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
    opacity: 0;
    background: inherit;
}

.btn-spinner::after {
    content: "";
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: #fff;
    animation: spin-slow 0.8s linear infinite;
}

.btn-success {
    position: absolute;
    inset: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    opacity: 0;
    background: linear-gradient(135deg, #059669, #10B981);
    font-size: inherit;
    letter-spacing: inherit;
    text-transform: inherit;
}

.btn.is-loading .btn-label,
.btn.is-loading .btn-icon {
    opacity: 0;
}

.btn.is-loading .btn-spinner {
    opacity: 1;
}

.btn.is-success .btn-label,
.btn.is-success .btn-icon {
    opacity: 0;
}

.btn.is-success .btn-success {
    opacity: 1;
}

.social-links-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.social-links-row a {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    border-radius: 12px;
    color: var(--text-secondary);
    background: var(--bg-glass);
    border: 1px solid var(--border);
    transition: color 0.3s ease, border-color 0.3s ease, transform 0.3s var(--ease-out), box-shadow 0.3s ease;
}

.social-links-row a:hover {
    color: var(--text-primary);
    border-color: rgba(99, 102, 241, 0.5);
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-primary);
}

.social-links-row svg {
    width: 16px;
    height: 16px;
}

[data-tip] {
    position: relative;
}

[data-tip]::after {
    content: attr(data-tip);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 9px);
    transform: translateX(-50%) translateY(4px);
    padding: 5px 10px;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 10px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    white-space: nowrap;
    color: var(--text-primary);
    background: rgba(13, 16, 24, 0.95);
    border: 1px solid var(--border-strong);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s var(--ease-out);
    z-index: 20;
}

[data-tip]:hover::after,
[data-tip]:focus-visible::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.page-loader {
    position: fixed;
    inset: 0;
    z-index: var(--z-loader);
    display: grid;
    place-items: center;
    background:
        radial-gradient(70% 55% at 50% 42%, rgba(99, 102, 241, 0.14), transparent 70%),
        var(--bg-primary);
    clip-path: inset(0 0 0 0);
}

.loader-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    text-align: center;
}

.loader-logo {
    font-family: var(--font-display);
    font-size: clamp(34px, 6vw, 64px);
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1;
}

.loader-logo-dot {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.loader-caption {
    font-family: var(--font-display);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.55em;
    text-indent: 0.55em;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.loader-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    width: min(320px, 72vw);
}

.loader-bar {
    width: 100%;
    height: 2px;
    border-radius: 99px;
    background: rgba(148, 163, 184, 0.15);
    overflow: hidden;
}

.loader-bar-fill {
    display: block;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: var(--gradient-main);
    transform: scaleX(0);
    transform-origin: left center;
    box-shadow: 0 0 16px rgba(99, 102, 241, 0.7);
}

.loader-percent {
    font-family: var(--font-display);
    font-size: 12px;
    font-weight: 600;
    letter-spacing: 0.3em;
    color: var(--text-secondary);
}

.loader-lines {
    display: flex;
    gap: 8px;
}

.loader-lines i {
    width: 34px;
    height: 1.5px;
    background: linear-gradient(90deg, transparent, rgba(148, 163, 184, 0.5), transparent);
    animation: line-shimmer 1.6s ease-in-out infinite;
}

.loader-lines i:nth-child(2) { animation-delay: 0.25s; }
.loader-lines i:nth-child(3) { animation-delay: 0.5s; }

@keyframes line-shimmer {
    0%, 100% { opacity: 0.25; transform: scaleX(0.6); }
    50%      { opacity: 1; transform: scaleX(1); }
}

.custom-cursor-dot,
.custom-cursor-ring {
    position: fixed;
    top: 0;
    left: 0;
    z-index: var(--z-cursor);
    pointer-events: none;
    border-radius: 50%;
    opacity: 0;
}

.custom-cursor-dot {
    width: 7px;
    height: 7px;
    margin: -3.5px 0 0 -3.5px;
    background: var(--accent);
    box-shadow: 0 0 10px rgba(34, 211, 238, 0.8);
}

.custom-cursor-ring {
    display: grid;
    place-items: center;
    width: 38px;
    height: 38px;
    margin: -19px 0 0 -19px;
    border: 1.5px solid rgba(99, 102, 241, 0.75);
    box-shadow: 0 0 18px rgba(99, 102, 241, 0.25), inset 0 0 12px rgba(99, 102, 241, 0.12);
    transition: transform 0.35s var(--ease-out), border-color 0.3s ease, background-color 0.3s ease, opacity 0.3s ease;
}

.custom-cursor-label {
    font-family: var(--font-display);
    font-size: 8.5px;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-indent: 0.24em;
    color: var(--text-primary);
    opacity: 0;
    transition: opacity 0.25s ease;
}

.custom-cursor-ring.is-hover {
    border-color: var(--accent);
    background: rgba(34, 211, 238, 0.08);
}

.custom-cursor-ring.is-down {
    border-color: var(--primary-light);
}

.custom-cursor-ring.is-view {
    background: rgba(7, 8, 13, 0.6);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

.custom-cursor-ring.is-view .custom-cursor-label {
    opacity: 1;
}

body.cursor-active,
body.cursor-active * {
    cursor: none !important;
}

.site-footer {
    position: fixed;
    left: 26px;
    right: 26px;
    bottom: calc(env(safe-area-inset-bottom) + 14px);
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    font-size: 10.5px;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    pointer-events: none;
}

.site-footer-hint {
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.site-footer-hint svg {
    width: 14px;
    height: 14px;
}

.project-modal {
    position: fixed;
    inset: 0;
    z-index: var(--z-modal);
    display: grid;
    place-items: center;
    padding: 20px;
    visibility: hidden;
}

.project-modal.is-open {
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(7, 8, 13, 0.78);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    opacity: 0;
}

.modal-panel {
    position: relative;
    width: min(720px, 94vw);
    max-height: min(86dvh, 820px);
    overflow-y: auto;
    border-radius: var(--radius-xl);
    background:
        radial-gradient(120% 60% at 80% 0%, rgba(99, 102, 241, 0.12), transparent 60%),
        var(--bg-secondary);
    border: 1px solid var(--border-strong);
    box-shadow: var(--shadow-lift);
    opacity: 0;
}

.modal-media {
    aspect-ratio: 16 / 8.4;
    overflow: hidden;
}

.modal-media img {
    width: 100%;
    height: 100%;
}

.modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 3;
    display: grid;
    place-items: center;
    width: 40px;
    height: 40px;
    border-radius: 12px;
    color: var(--text-primary);
    background: rgba(7, 8, 13, 0.6);
    border: 1px solid var(--border-strong);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.modal-close:hover {
    border-color: rgba(236, 72, 153, 0.6);
    transform: rotate(90deg);
    box-shadow: 0 0 22px rgba(236, 72, 153, 0.35);
}

.modal-close svg {
    width: 17px;
    height: 17px;
}

.modal-body {
    padding: 26px clamp(20px, 4vw, 34px) 32px;
}

.modal-meta {
    font-size: 10.5px;
    font-weight: 600;
    letter-spacing: 0.24em;
    text-transform: uppercase;
    color: var(--accent);
}

.modal-title {
    margin: 8px 0 12px;
    font-size: clamp(22px, 4vw, 32px);
    font-weight: 700;
}

.modal-desc {
    font-size: 13.5px;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 18px;
}

.modal-tech {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
    margin-bottom: 24px;
}

.nav-menu-glow {
    display: none;
}

.scroll-progress {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    z-index: 7;
    border-radius: 0 2px 2px 0;
    background: var(--gradient-main);
    transform: scaleX(0);
    transform-origin: left center;
    pointer-events: none;
    box-shadow: 0 0 12px rgba(99, 102, 241, 0.55);
}

body.no-gsap .page-loader,
body.no-gsap .book-navigation {
    display: none;
}

.dev-badge {
    position: fixed;
    left: 18px;
    bottom: calc(env(safe-area-inset-bottom) + 104px);
    z-index: 950;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 7px 12px;
    border-radius: 99px;
    font-family: var(--font-display);
    font-size: 9.5px;
    font-weight: 600;
    letter-spacing: 0.22em;
    text-indent: 0.22em;
    color: #34D399;
    background: rgba(7, 8, 13, 0.85);
    border: 1px solid rgba(52, 211, 153, 0.4);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
}

.dev-badge:hover {
    transform: translateY(-2px);
}

.dev-badge-dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #34D399;
    box-shadow: 0 0 10px rgba(52, 211, 153, 0.8);
    animation: dot-pulse 2.2s ease-in-out infinite;
}

.dev-badge.is-reloading .dev-badge-dot {
    background: var(--accent);
    box-shadow: 0 0 10px rgba(34, 211, 238, 0.9);
}

body.no-gsap .book-page:not(.is-current) {
    visibility: hidden;
}