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

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

body {
    margin: 0;
    background-color: #0a1628;
    color: #ffffff;
}

/* Selection */
::selection {
    background-color: #d4a017;
    color: #0a1628;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #0a1628;
}
::-webkit-scrollbar-thumb {
    background: #1b3a6c;
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: #d4a017;
}

/* Navbar */
#navbar {
    background: transparent;
    transition: background-color 0.3s ease, box-shadow 0.3s ease, padding 0.3s ease;
}

#navbar.scrolled {
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

#navbar.scrolled nav {
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
}

/* Reveal animations (progressive enhancement — content visible without JS) */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 1;
        transform: translateY(0);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
}

@media (prefers-reduced-motion: reduce) {
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* Hero gradient animation */
@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

/* Geometric shape float animation */
@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(12deg); }
    50% { transform: translateY(-12px) rotate(12deg); }
}

@keyframes float-slow {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-8px); }
}

/* Smooth transitions for all interactive elements */
a, button {
    transition: all 0.2s ease;
}

/* Focus styles */
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid #d4a017;
    outline-offset: 2px;
}

/* Mobile menu transition */
#mobile-menu {
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Image hover effects */
img {
    max-width: 100%;
    height: auto;
}

/* Card hover lift effect */
.reveal:hover {
    transform: translateY(-4px);
}

/* Button ripple-like glow */
button:hover, a:hover {
    filter: brightness(1.05);
}

/* Form enhancements */
input::placeholder, textarea::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

/* Ensure gallery images don't overflow */
.grid img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Responsive typography */
@media (max-width: 640px) {
    h1 {
        font-size: 2.5rem !important;
    }
    h2 {
        font-size: 2rem !important;
    }
}

@media (min-width: 641px) and (max-width: 768px) {
    h1 {
        font-size: 3.5rem !important;
    }
}