/* Base & Reset */
*, *::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(212, 168, 83, 0.3);
    color: #0a1628;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a1628;
}
::-webkit-scrollbar-thumb {
    background: #d4a853;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #e0b96a;
}

/* Animations */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

@keyframes float-delay {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-15px) rotate(-3deg); }
}

@keyframes scroll-line {
    0% { opacity: 0; transform: scaleY(0); transform-origin: top; }
    50% { opacity: 1; transform: scaleY(1); transform-origin: top; }
    51% { transform-origin: bottom; }
    100% { opacity: 0; transform: scaleY(0); transform-origin: bottom; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Scroll reveal - progressive enhancement, works without JS */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-active .reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
}

.js-active .reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .js-active .reveal {
        opacity: 1;
        transform: translateY(0);
    }
    html {
        scroll-behavior: auto;
    }
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

.animate-float {
    animation: float 6s ease-in-out infinite;
}

.animate-float-delay {
    animation: float-delay 5s ease-in-out infinite 1.5s;
}

.animate-scroll-line {
    animation: scroll-line 2s ease-in-out infinite;
}

/* Navbar scroll state */
.navbar-scrolled {
    background: rgba(10, 22, 40, 0.95) !important;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

/* Mobile menu */
#mobile-menu.show {
    animation: fadeIn 0.3s ease forwards;
}

/* Button focus states */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #d4a853;
    outline-offset: 2px;
    border-radius: 4px;
}

/* Image loading placeholder */
img {
    background: linear-gradient(135deg, #1a2a4a 0%, #223761 100%);
    min-height: 100px;
}

/* Smooth transitions for all interactive elements */
button, a, input, select, textarea {
    -webkit-tap-highlight-color: transparent;
}