/* ===== Base & Typography ===== */
html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    overflow-x: hidden;
}

/* ===== Selection Color ===== */
::selection {
    background-color: rgba(207, 69, 51, 0.15);
    color: #9c3024;
}

/* ===== Smooth Scroll Offset for Fixed Nav ===== */
section[id] {
    scroll-margin-top: 80px;
}

/* ===== Navbar Transition ===== */
#navbar {
    transition: background-color 0.5s ease, box-shadow 0.5s ease, padding 0.5s ease;
}

#navbar.scrolled {
    background-color: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: 0 1px 0 rgba(212, 145, 130, 0.15);
}

/* ===== Mobile Menu ===== */
#mobile-menu.active {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.active .mobile-menu-link {
    animation: fadeUp 0.4s ease forwards;
    opacity: 1;
}

.mobile-menu-link {
    opacity: 0;
    animation: fadeUp 0.4s ease forwards;
}

.mobile-menu-link:nth-child(1) { animation-delay: 0.05s; }
.mobile-menu-link:nth-child(2) { animation-delay: 0.1s; }
.mobile-menu-link:nth-child(3) { animation-delay: 0.15s; }
.mobile-menu-link:nth-child(4) { animation-delay: 0.2s; }

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Hamburger Animation ===== */
.menu-line {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

body.menu-open .menu-line:nth-child(1) {
    transform: translateY(5px) rotate(45deg);
}

body.menu-open .menu-line:nth-child(2) {
    opacity: 0;
}

body.menu-open .menu-line:nth-child(3) {
    transform: translateY(-5px) rotate(-45deg);
    width: 1.5rem;
}

/* ===== Scroll Reveal (Progressive Enhancement) ===== */
@media (prefers-reduced-motion: no-preference) {
    .reveal {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.7s ease, transform 0.7s ease;
    }
    
    .reveal.revealed {
        opacity: 1;
        transform: translateY(0);
    }
    
    .reveal-delay-1 { transition-delay: 0.1s; }
    .reveal-delay-2 { transition-delay: 0.2s; }
    .reveal-delay-3 { transition-delay: 0.3s; }
    .reveal-delay-4 { transition-delay: 0.4s; }
}

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
    
    html {
        scroll-behavior: auto;
    }
    
    .reveal {
        opacity: 1;
        transform: none;
    }
}

/* ===== Image Optimization ===== */
img {
    max-width: 100%;
    height: auto;
}

/* ===== Focus Styles ===== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #cf4533;
    outline-offset: 4px;
    border-radius: 2px;
}

/* ===== Subtle Hover Lift for Cards ===== */
.group:hover .group-hover\\:scale-105 {
    transform: scale(1.05);
}

/* ===== Thin Line Decorations ===== */
.divider-line {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(212, 145, 130, 0.3), transparent);
}

/* ===== Button Micro-interactions ===== */
button, a {
    -webkit-tap-highlight-color: transparent;
}

/* ===== Loading State for Images ===== */
img {
    background-color: rgba(212, 145, 130, 0.1);
}