/* ============================================
   SHARED COMPONENTS
   Navbar, Footer, Buttons, Cards, Cursor
   ============================================ */

/* ---- Navbar ---- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-sticky);
    padding: var(--space-md) 0;
    transition: background-color var(--transition-base), backdrop-filter var(--transition-base), box-shadow var(--transition-base);
}

.navbar.scrolled {
    background-color: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    border-bottom: 1px solid var(--border);
}

.navbar__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.navbar__left {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.navbar__email {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    display: none;
}

@media (min-width: 768px) {
    .navbar__email {
        display: inline;
    }
}

.navbar__btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.4rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 500;
    letter-spacing: 0.02em;
    color: var(--text-primary);
    background: var(--bg-card);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.navbar__btn:hover {
    background: var(--accent);
    color: var(--text-inverse);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.navbar__btn svg {
    width: 14px;
    height: 14px;
}

/* Nav Links */
.navbar__nav {
    display: none;
    align-items: center;
    gap: var(--space-xl);
}

@media (min-width: 900px) {
    .navbar__nav {
        display: flex;
    }
}

.navbar__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-tertiary);
    position: relative;
    padding: var(--space-xs) 0;
    transition: color var(--transition-fast);
}

.navbar__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1.5px;
    background-color: var(--text-primary);
    transition: width var(--transition-base);
}

.navbar__link:hover,
.navbar__link.active {
    color: var(--text-primary);
}

.navbar__link.active::after,
.navbar__link:hover::after {
    width: 100%;
}

/* Right side */
.navbar__right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Theme Toggle */
.theme-toggle {
    position: relative;
    width: 44px;
    height: 24px;
    border-radius: var(--radius-full);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-strong);
    cursor: pointer;
    transition: background-color var(--transition-base);
    display: flex;
    align-items: center;
    padding: 2px;
}

.theme-toggle__slider {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--text-primary);
    transition: transform var(--transition-base), background-color var(--transition-theme);
    display: flex;
    align-items: center;
    justify-content: center;
}

[data-theme="dark"] .theme-toggle__slider {
    transform: translateX(20px);
}

.theme-toggle__icon {
    width: 12px;
    height: 12px;
    fill: none;
    stroke: var(--text-inverse);
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Hamburger */
.navbar__hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 4px;
}

@media (min-width: 900px) {
    .navbar__hamburger {
        display: none;
    }
}

.navbar__hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: transform var(--transition-base), opacity var(--transition-fast);
    border-radius: 2px;
}

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

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

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

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    background: var(--bg-overlay);
    backdrop-filter: blur(30px);
    -webkit-backdrop-filter: blur(30px);
    z-index: var(--z-overlay);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2xl);
    transition: right var(--transition-slow);
}

.mobile-menu.open {
    right: 0;
}

.mobile-menu__close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1.5px solid var(--text-secondary);
    border-radius: 50%;
    color: var(--text-primary);
    cursor: pointer;
    opacity: 0;
    transform: rotate(-90deg);
    transition: opacity 0.3s ease, transform 0.3s ease, border-color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

.mobile-menu__close svg {
    width: 24px;
    height: 24px;
}

.mobile-menu.open .mobile-menu__close {
    opacity: 1;
    transform: rotate(0deg);
    transition-delay: 0.05s;
}

.mobile-menu__close:hover,
.mobile-menu__close:active {
    border-color: var(--text-primary);
    background: var(--border-strong);
}

.mobile-menu__link {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 500;
    color: var(--text-primary);
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.4s ease, transform 0.4s ease, color var(--transition-fast);
}

.mobile-menu.open .mobile-menu__link {
    opacity: 1;
    transform: translateX(0);
}

.mobile-menu.open .mobile-menu__link:nth-of-type(1) {
    transition-delay: 0.1s;
}

.mobile-menu.open .mobile-menu__link:nth-of-type(2) {
    transition-delay: 0.15s;
}

.mobile-menu.open .mobile-menu__link:nth-of-type(3) {
    transition-delay: 0.2s;
}

.mobile-menu.open .mobile-menu__link:nth-of-type(4) {
    transition-delay: 0.25s;
}

.mobile-menu.open .mobile-menu__link:nth-of-type(5) {
    transition-delay: 0.3s;
}

.mobile-menu__link:hover {
    color: var(--text-tertiary);
}

/* ---- Buttons ---- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    letter-spacing: 0.02em;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn--primary {
    background: var(--accent);
    color: var(--text-inverse);
    border: 1.5px solid var(--accent);
}

.btn--primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--outline {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-strong);
}

.btn--outline:hover {
    background: var(--accent);
    color: var(--text-inverse);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn--ghost {
    background: transparent;
    color: var(--text-secondary);
    border: none;
    padding: 0.5rem 1rem;
}

.btn--ghost:hover {
    color: var(--text-primary);
}

.btn__icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

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

.btn__ripple {
    position: absolute;
    inset: 0;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 60%);
    opacity: 0;
    transform: scale(0);
    transition: transform 0.5s ease, opacity 0.5s ease;
}

.btn:active .btn__ripple {
    transform: scale(2);
    opacity: 1;
    transition: none;
}

/* ---- Section Header ---- */
.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 0.35rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
    letter-spacing: 0.03em;
    margin-bottom: var(--space-xl);
    background: var(--bg-card);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.section-subtitle {
    font-size: var(--text-lg);
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

.section-subtitle--center {
    margin-left: auto;
    margin-right: auto;
}

/* ---- Cards ---- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, transparent 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-strong);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.card:hover::before {
    opacity: 1;
}

.card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--space-lg);
    color: var(--text-primary);
    transition: transform var(--transition-base);
}

.card:hover .card__icon {
    transform: scale(1.1) rotate(-3deg);
}

.card__title {
    font-family: var(--font-body);
    font-size: var(--text-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.card__desc {
    font-size: var(--text-sm);
    color: var(--text-tertiary);
    line-height: 1.7;
}

/* ---- Footer ---- */
.footer {
    padding: var(--space-4xl) 0 var(--space-2xl);
    border-top: 1px solid var(--border);
    transition: border-color var(--transition-theme);
}

.footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2xl);
}

.footer__socials {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    color: var(--text-primary);
    border-color: var(--text-primary);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

.footer__social-link svg {
    width: 18px;
    height: 18px;
}

.footer__bottom {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    text-align: center;
}

.footer__copyright {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
}

.footer__back-top {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: color var(--transition-fast), transform var(--transition-fast);
}

.footer__back-top:hover {
    color: var(--text-primary);
    transform: translateY(-2px);
}

.footer__back-top svg {
    width: 14px;
    height: 14px;
}

/* ---- Page Transition Overlay ---- */
.page-transition {
    position: fixed;
    inset: 0;
    z-index: 10000;
    background: var(--accent);
    transform: scaleY(0);
    transform-origin: bottom;
    pointer-events: none;
}

.page-transition.entering {
    animation: pageEnter 0.5s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

.page-transition.leaving {
    animation: pageLeave 0.5s cubic-bezier(0.65, 0, 0.35, 1) forwards;
}

@keyframes pageEnter {
    0% {
        transform: scaleY(0);
        transform-origin: bottom;
    }

    100% {
        transform: scaleY(1);
        transform-origin: bottom;
    }
}

@keyframes pageLeave {
    0% {
        transform: scaleY(1);
        transform-origin: top;
    }

    100% {
        transform: scaleY(0);
        transform-origin: top;
    }
}

/* ---- Loading Screen ---- */
.loader {
    position: fixed;
    inset: 0;
    z-index: 100000;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loader.hidden {
    opacity: 0;
    visibility: hidden;
}

.loader__content {
    text-align: center;
}

.loader__name {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0;
    animation: loaderFade 1s ease 0.2s forwards;
}

.loader__bar {
    width: 60px;
    height: 2px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    margin: var(--space-md) auto 0;
    overflow: hidden;
}

.loader__progress {
    height: 100%;
    width: 0;
    background: var(--text-primary);
    border-radius: 2px;
    animation: loaderProgress 1.2s cubic-bezier(0.4, 0, 0.2, 1) 0.3s forwards;
}

@keyframes loaderFade {
    to {
        opacity: 1;
    }
}

@keyframes loaderProgress {
    to {
        width: 100%;
    }
}

/* ---- Scroll Progress Bar ---- */
.scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    width: 0%;
    background: var(--text-primary);
    z-index: 100001;
    transition: background-color var(--transition-theme);
    pointer-events: none;
}

/* ---- Toast Notification ---- */
.toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--accent);
    color: var(--text-inverse);
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 500;
    z-index: var(--z-modal);
    opacity: 0;
    transition: transform 0.4s cubic-bezier(0.34, 1.56, 0.64, 1), opacity 0.4s ease;
    pointer-events: none;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* ---- Page Background Decorations (shared across pages) ---- */
/* Dot grid — light mode */
.page-dots {
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    background-image: radial-gradient(circle, rgba(0, 0, 0, 0.1) 1px, transparent 1px);
    background-size: 24px 24px;
}

[data-theme="dark"] .page-dots {
    display: none;
}

/* Sparkles — dark mode */
.page-sparkles {
    display: none;
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

[data-theme="dark"] .page-sparkles {
    display: block;
}

.page-sparkle {
    position: absolute;
    color: var(--hero-accent, #10b981);
    animation: pageSparkleFloat 6s ease-in-out infinite;
}

.page-sparkle--1  { top: 8%;   left: 12%;  animation-delay: 0s;    opacity: 0.5; }
.page-sparkle--2  { top: 15%;  right: 18%; animation-delay: 1.2s;  opacity: 0.35; }
.page-sparkle--3  { top: 28%;  left: 6%;   animation-delay: 2.5s;  opacity: 0.45; }
.page-sparkle--4  { top: 22%;  right: 8%;  animation-delay: 0.8s;  opacity: 0.3; }
.page-sparkle--5  { top: 40%;  left: 15%;  animation-delay: 3.5s;  opacity: 0.4; }
.page-sparkle--6  { top: 38%;  right: 22%; animation-delay: 1.8s;  opacity: 0.25; }
.page-sparkle--7  { top: 55%;  right: 5%;  animation-delay: 4.2s;  opacity: 0.5; }
.page-sparkle--8  { top: 52%;  left: 8%;   animation-delay: 0.5s;  opacity: 0.3; }
.page-sparkle--9  { top: 68%;  left: 20%;  animation-delay: 2.8s;  opacity: 0.4; }
.page-sparkle--10 { top: 72%;  right: 14%; animation-delay: 5s;    opacity: 0.35; }
.page-sparkle--11 { top: 85%;  left: 10%;  animation-delay: 3.2s;  opacity: 0.3; }
.page-sparkle--12 { top: 90%;  right: 9%;  animation-delay: 1.5s;  opacity: 0.25; }

@keyframes pageSparkleFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-10px) scale(1.25); }
}

/* ---- Coming Soon (disabled nav links) ---- */
/* ---- Mobile Performance Optimizations ---- */
@media (max-width: 768px) {
    .navbar.scrolled {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background-color: var(--bg-primary);
    }
    .mobile-menu {
        backdrop-filter: none;
        -webkit-backdrop-filter: none;
        background: var(--bg-primary);
    }
    .page-sparkles {
        display: none;
    }
}