/* Base Styles extracted from template */
html {
    scroll-padding-top: 80px; /* offset for fixed header */
}

body {
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
}

/* Custom Background Utilities */
.tech-bg {
    background-color: #ffffff;
    background-image: radial-gradient(#e5e7eb 1px, transparent 1px);
    background-size: 24px 24px;
}

.grid-bg {
    background-size: 40px 40px;
    background-image: linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
}

/* =========================================================================
   ANIMATIONS
   ========================================================================= */

/* Reveal animations for scroll intersection observer */
.hidden-element {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    will-change: opacity, transform;
}

.hidden-element.show {
    opacity: 1;
    transform: translateY(0);
}

/* Stagger delays manually or via JS */
.delay-100 {
    transition-delay: 100ms;
}

.delay-200 {
    transition-delay: 200ms;
}

.delay-300 {
    transition-delay: 300ms;
}

/* Pure CSS Keyframe Initial Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes growRight {
    from {
        width: 0;
        opacity: 0;
    }

    to {
        width: 6rem;
        /* 24 in Tailwind (w-24) */
        opacity: 1;
    }
}

.w-grow {
    animation: growRight 1.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    animation-delay: 0.5s;
    opacity: 0;
}

/* =========================================================================
   MOBILE MENU
   ========================================================================= */

.burger-bar {
    display: block;
    width: 22px;
    height: 2px;
    background-color: #ff8400;
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, width 0.35s cubic-bezier(0.16, 1, 0.3, 1);
    transform-origin: center;
}

/* Animate burger → X */
#mobile-menu-btn.open .burger-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
#mobile-menu-btn.open .burger-bar:nth-child(2) {
    opacity: 0;
    width: 0;
}
#mobile-menu-btn.open .burger-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile menu slide-down */
.mobile-menu {
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
}

.mobile-menu.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
}

/* Nav items stagger */
.mobile-nav-item {
    display: block;
    padding: 0.875rem 1rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: #4b5563;
    border-left: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
    transform: translateX(-6px);
    opacity: 0;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease,
                transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.4s ease;
}

.mobile-menu.open .mobile-nav-item {
    transform: translateX(0);
    opacity: 1;
}

.mobile-nav-item:hover {
    color: #ff8400;
    border-left-color: #ff8400;
    background-color: #fff7ed;
}

/* Stagger delays for nav items */
.mobile-menu.open .mobile-nav-item:nth-child(1) { transition-delay: 0.05s; }
.mobile-menu.open .mobile-nav-item:nth-child(2) { transition-delay: 0.1s; }
.mobile-menu.open .mobile-nav-item:nth-child(3) { transition-delay: 0.15s; }
.mobile-menu.open .mobile-nav-item:nth-child(4) { transition-delay: 0.2s; }

/* =========================================================================
   PROJECT GRID EXPANSION
   ========================================================================= */

/* State when grid has an active expanded card */
#projects-grid.has-expanded .project-card:not(.expanded) {
    opacity: 0.4;
    transform: scale(0.98) translateY(10px);
    pointer-events: none;
    /* Prevent clicks on dock items if desired, or keep to switch */
}

/* Hover over docked items */
#projects-grid.has-expanded .project-card:not(.expanded):hover {
    opacity: 0.7;
    cursor: pointer;
    pointer-events: auto;
}

/* The expanded card itself takes full row */
.project-card.expanded {
    grid-column: 1 / -1;
    min-height: 600px;
    /* Give it more room */
    z-index: 20;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    /* Tailwind shadow-2xl */
}

/* Handle the internal visibility */
.project-card.expanded .project-brief {
    opacity: 0;
    pointer-events: none;
    position: absolute;
}

.project-card.expanded .project-detail {
    display: flex;
    opacity: 1;
    pointer-events: auto;
}

/* Internal Screenshot animation inside the expanded card */
.project-card .screenshot-layer {
    opacity: 0;
    transform: translateY(40px) scale(0.95);
    transition: all 0.8s cubic-bezier(0.19, 1, 0.22, 1) 0.2s;
    /* Delay entry slightly */
}

.project-card.expanded .screenshot-layer {
    opacity: 1;
    transform: translateY(0) scale(1);
}

/* Interactive Background Noise/Mesh texture attempt */
.interactive-bg {
    background: radial-gradient(circle at 50% 50%, #f3f4f6 0%, #e5e7eb 100%);
    position: relative;
}

.interactive-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
    opacity: 0.04;
    mix-blend-mode: multiply;
    pointer-events: none;
}