/* Base & Utilities */
*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

::selection {
    background: rgba(15, 118, 110, 0.15);
    color: #0f766e;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
}
::-webkit-scrollbar-track {
    background: #f8fafc;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Navigation */
#navbar {
    background: transparent;
    transition: background 0.4s ease, box-shadow 0.4s ease, backdrop-filter 0.4s ease;
}

#navbar.scrolled {
    background: rgba(248, 250, 252, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.06);
}

.nav-logo {
    transition: color 0.3s ease;
}

#navbar.scrolled .nav-logo {
    color: #1e293b;
}

/* Mobile Menu */
.hamburger-line {
    transition: all 0.3s ease;
}

#mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(3px, 3px);
}
#mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}
#mobile-menu-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(3px, -3px);
    width: 24px;
}

.mobile-menu-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease, color 0.3s ease;
}

#mobile-menu.open .mobile-menu-link {
    opacity: 1;
    transform: translateY(0);
}

#mobile-menu.open .mobile-menu-link:nth-child(1) { transition-delay: 0.1s; }
#mobile-menu.open .mobile-menu-link:nth-child(2) { transition-delay: 0.15s; }
#mobile-menu.open .mobile-menu-link:nth-child(3) { transition-delay: 0.2s; }
#mobile-menu.open .mobile-menu-link:nth-child(4) { transition-delay: 0.25s; }
#mobile-menu.open .mobile-menu-link:nth-child(5) { transition-delay: 0.3s; }

/* Hero Animations */
.hero-content > * {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeUp 0.8s ease forwards;
}
.hero-content > *:nth-child(1) { animation-delay: 0.1s; }
.hero-content > *:nth-child(2) { animation-delay: 0.2s; }
.hero-content > *:nth-child(3) { animation-delay: 0.3s; }
.hero-content > *:nth-child(4) { animation-delay: 0.4s; }
.hero-content > *:nth-child(5) { animation-delay: 0.5s; }

.main-image-wrapper {
    opacity: 0;
    transform: translateX(40px);
    animation: slideIn 1s ease 0.3s forwards;
}

.floating-card {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s ease 0.7s forwards;
}

@keyframes fadeUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Scroll dot animation */
@keyframes scrollDot {
    0% { top: 0; opacity: 1; }
    100% { top: 100%; opacity: 0; }
}

.scroll-dot {
    animation: scrollDot 1.5s ease-in-out infinite;
}

/* Menu Cards */
.menu-card {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.menu-card.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Gallery */
.gallery-item {
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.gallery-item.visible {
    opacity: 1;
    transform: scale(1);
}

/* About Images */
.about-image-grid {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.about-image-grid.visible {
    opacity: 1;
    transform: translateX(0);
}

/* Intersection Observer Targets */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Floating card subtle animation */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

.floating-card {
    animation: fadeUp 0.8s ease 0.7s forwards, float 4s ease-in-out 1.5s infinite;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .hero-content > * {
        animation-duration: 0.6s ease;
    }
    .main-image-wrapper {
        animation-duration: 0.8s ease;
    }
}

/* Focus styles for accessibility */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible {
    outline: 2px solid #0f766e;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Print styles */
@media print {
    #navbar, .floating-card, .scroll-indicator {
        display: none;
    }
    body {
        background: white;
        color: black;
    }
}