/* ========================================
   MKL Produce — Custom Styles
   Classic & Elegant Design System
   ======================================== */

/* CSS Custom Properties */
:root {
    --color-forest-50: #f2f7f0;
    --color-forest-100: #e3eddb;
    --color-forest-200: #c5dbb4;
    --color-forest-300: #9abf82;
    --color-forest-400: #729d56;
    --color-forest-500: #527d39;
    --color-forest-600: #3f612c;
    --color-forest-700: #324e24;
    --color-forest-800: #2a3f1e;
    --color-forest-900: #233318;
    --color-forest-950: #111a0a;
    --color-cream-50: #fefdf8;
    --color-cream-100: #fdf9ed;
    
    --font-serif: 'Playfair Display', Georgia, serif;
    --font-sans: 'Lato', system-ui, sans-serif;
    
    --transition-smooth: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition-spring: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Base Reset & Typography */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    background-color: var(--color-cream-50);
    color: var(--color-forest-900);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Selection Color */
::selection {
    background-color: var(--color-forest-200);
    color: var(--color-forest-900);
}

/* Smooth Image Rendering */
img {
    -webkit-font-smoothing: antialiased;
    image-rendering: -webkit-optimize-contrast;
}

/* ========================================
   Navigation
   ======================================== */
#navbar {
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    transition: var(--transition-smooth);
}

#navbar.scrolled {
    background: rgba(254, 253, 248, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 1px 0 rgba(50, 78, 36, 0.08), 0 4px 20px rgba(0, 0, 0, 0.04);
}

#navbar.scrolled .font-serif {
    color: var(--color-forest-900) !important;
}

/* Mobile Menu */
#mobile-menu {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

#mobile-menu.open {
    opacity: 1;
    pointer-events: all;
}

#mobile-menu.closed {
    opacity: 0;
    pointer-events: none;
}

.mobile-link {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.4s ease, transform 0.4s ease, color 0.3s ease;
}

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

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

/* Hamburger Animation */
.menu-line {
    transition: all 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

#menu-btn.active .menu-line:nth-child(1) {
    transform: translateY(6px) rotate(45deg);
}

#menu-btn.active .menu-line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

#menu-btn.active .menu-line:nth-child(3) {
    transform: translateY(-6px) rotate(-45deg);
}

/* ========================================
   Reveal Animations
   ======================================== */
.reveal {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

/* ========================================
   Button & Link Hover Effects
   ======================================== */
a {
    text-decoration: none;
}

/* ========================================
   Scroll Progress Bar
   ======================================== */
#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-forest-500), var(--color-forest-300));
    z-index: 100;
    transform-origin: left;
    transform: scaleX(0);
    transition: transform 0.1s linear;
}

/* ========================================
   Back to Top Button
   ======================================== */
#back-to-top {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
    transition: opacity 0.4s ease, transform 0.4s ease;
}

#back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: all;
}

#back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(50, 78, 36, 0.3);
}

/* ========================================
   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;
    }
}

/* ========================================
   Responsive Adjustments
   ======================================== */
@media (max-width: 768px) {
    html {
        scroll-padding-top: 70px;
    }
    
    .font-serif {
        font-size: clamp(1.5rem, 5vw, 2rem);
    }
}

@media (min-width: 769px) and (max-width: 1023px) {
    /* Tablet-specific adjustments if needed */
}

/* ========================================
   Focus Styles (Accessibility)
   ======================================== */
a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--color-forest-500);
    outline-offset: 4px;
    border-radius: 4px;
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
    #navbar,
    #scroll-progress,
    #back-to-top,
    #menu-btn {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .reveal {
        opacity: 1 !important;
        transform: none !important;
    }
}