/* ============================================
   TruSip Nutrition — Custom Styles
   Classic & Elegant · Plum + Amber
   ============================================ */

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Base font smoothing */
body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   Floating animations for hero cards
   ============================================ */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-12px); }
}

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

.animate-float {
    animation: float 4s ease-in-out infinite;
}

.animate-float-delayed {
    animation: float-delayed 5s ease-in-out infinite;
    animation-delay: 1s;
}

/* ============================================
   Card elevation on hover
   ============================================ */
.card-elevate {
    transition: transform 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94),
                box-shadow 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.card-elevate:hover {
    transform: translateY(-8px);
    box-shadow: 0 25px 60px rgba(61, 10, 20, 0.3);
}

/* ============================================
   Scroll reveal animations
   Progressive enhancement — hidden by default,
   revealed by JS only for below-fold content
   ============================================ */
.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);
}

/* ============================================
   Navbar transitions
   ============================================ */
.nav-scrolled {
    background: rgba(250, 250, 245, 0.95) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 20px rgba(61, 10, 20, 0.08);
}

/* ============================================
   Mobile menu link transitions
   ============================================ */
.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: 0.2s; }
.mobile-menu-open .mobile-link:nth-child(3) { transition-delay: 0.3s; }
.mobile-menu-open .mobile-link:nth-child(4) { transition-delay: 0.4s; }

/* ============================================
   Menu button active state
   ============================================ */
.menu-line.active:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

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

.menu-line.active:nth-child(3) {
    width: 1.5rem;
    transform: rotate(-45deg) translate(5px, -5px);
}

/* ============================================
   Selection color
   ============================================ */
::selection {
    background: #fde68a;
    color: #3d0a14;
}

/* ============================================
   Reduced motion preference
   ============================================ */
@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;
    }
}

/* ============================================
   Focus visible for accessibility
   ============================================ */
a:focus-visible,
button:focus-visible {
    outline: 2px solid #fbbf24;
    outline-offset: 2px;
    border-radius: 4px;
}

/* ============================================
   Custom scrollbar
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #fafaf5;
}

::-webkit-scrollbar-thumb {
    background: #c02741;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #9f1e36;
}