/**
 * Seth Rininger Portfolio — Shared Effects CSS
 *
 * Features:
 * 1. Page preloader with name animation
 * 2. Staggered text reveal on headings
 * 3. Subtle noise/grain texture overlay
 * 4. prefers-reduced-motion support
 * 5. Accessibility polish (focus states, skip link)
 */

/* ─── SKIP TO CONTENT (Accessibility) ─────────────────── */

.skip-to-content {
    position: fixed;
    top: -100%;
    left: 50%;
    transform: translateX(-50%);
    background: #3b82f6;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0 0 8px 8px;
    z-index: 200000;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: top 0.2s ease;
}

.skip-to-content:focus {
    top: 0;
    outline: none;
}


/* ─── PAGE PRELOADER ─────────────────────────────────── */

#page-preloader {
    position: fixed;
    inset: 0;
    background: #0a0a0a;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

#page-preloader.loaded {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-name {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    overflow: hidden;
}

.preloader-name .char {
    display: inline-block;
    opacity: 0;
    transform: translateY(30px);
    animation: preloaderCharReveal 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.preloader-line {
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #3b82f6, #f59e0b);
    margin-top: 1rem;
    animation: preloaderLine 0.8s 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    border-radius: 1px;
}

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

@keyframes preloaderLine {
    to {
        width: 120px;
    }
}


/* ─── STAGGERED TEXT REVEAL ──────────────────────────── */

.text-reveal-word {
    display: inline-block;
    overflow: hidden;
    vertical-align: bottom;
    margin-right: 0.25em;
}

.text-reveal-word .word-inner {
    display: inline-block;
    transform: translateY(105%);
    transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

.text-reveal-word.revealed .word-inner {
    transform: translateY(0);
}


/* ─── NOISE/GRAIN TEXTURE OVERLAY ────────────────────── */

body::after {
    content: '';
    position: fixed;
    inset: 0;
    z-index: 99998;
    pointer-events: none;
    opacity: 0.03;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
    mix-blend-mode: overlay;
}

/* Slightly more visible in light mode */
html.light-mode body::after,
body.light-mode::after {
    opacity: 0.02;
}


/* ─── ENHANCED FOCUS STATES ──────────────────────────── */

*:focus-visible {
    outline: 2px solid #3b82f6;
    outline-offset: 3px;
    border-radius: 4px;
}

/* Remove outline on mouse clicks, keep for keyboard */
*:focus:not(:focus-visible) {
    outline: none;
}


/* ─── PREFERS-REDUCED-MOTION ─────────────────────────── */

/* ─── NAV CTA BUTTON ────────────────────────────────────── */

.nav-cta {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white !important;
    padding: 0.35rem 1rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none !important;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.nav-cta:hover {
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
    transform: translateY(-1px);
}


/* ─── HAMBURGER ICON & X ANIMATION ──────────────────────── */

.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    gap: 5px;
    background: none !important;
    border: none !important;
    padding: 0.5rem;
}

.hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #e5e5e5;
    border-radius: 1px;
    transition: transform 0.3s ease, opacity 0.3s ease;
}

body.light-mode .hamburger span {
    background: #1a1a1a;
}

.hamburger.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
    transform: scale(0);
}

.hamburger.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ─── SMART NAVBAR (hide on scroll down, show on scroll up) ── */

nav {
    transition: transform 0.3s cubic-bezier(0.23, 1, 0.32, 1), background-color 0.3s ease, color 0.3s ease !important;
}

nav.nav-hidden {
    transform: translateY(calc(-100% - 60px)) !important;
}


/* ─── MOBILE LIQUID GLASS NAV ────────────────────────────── */

@media (max-width: 768px) {
    nav {
        background: transparent !important;
        border-bottom: none !important;
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        padding: 0.75rem 1rem !important;
        padding-top: calc(0.75rem + env(safe-area-inset-top, 0px)) !important;
        gap: 0 !important;
    }

    nav .nav-brand,
    nav .nav-controls {
        background: rgba(40, 40, 40, 0.55);
        -webkit-backdrop-filter: blur(20px) saturate(180%);
        backdrop-filter: blur(20px) saturate(180%);
        border: 1px solid rgba(255, 255, 255, 0.12);
        border-radius: 50px;
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.3);
        height: 40px;
        display: flex;
        align-items: center;
    }

    nav .nav-brand {
        padding: 0 1rem;
        font-size: 1rem;
    }

    nav .nav-controls {
        padding: 0 0.75rem;
        gap: 0.5rem;
        overflow: visible;
    }

    /* Tighter hamburger inside glass pill */
    .hamburger {
        padding: 0.25rem;
        gap: 4px;
    }

    .hamburger span {
        width: 18px;
    }

    .hamburger.active span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }

    .hamburger.active span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
    }

    body.light-mode nav .nav-brand,
    body.light-mode nav .nav-controls {
        background: rgba(255, 255, 255, 0.55);
        border: 1px solid rgba(0, 0, 0, 0.08);
        box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
    }
}

nav.nav-visible {
    transform: translateY(0) !important;
}

/* ─── BACK TO TOP BUTTON ─────────────────────────────── */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: rgba(59, 130, 246, 0.9);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: opacity 0.3s ease, visibility 0.3s ease, transform 0.3s ease, background-color 0.3s ease;
    z-index: 999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: rgba(59, 130, 246, 1);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

@media (prefers-reduced-motion: reduce) {
    .back-to-top {
        transition: none;
    }
    nav {
        transition: none !important;
    }

    /* Disable all animations and transitions */
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    /* Hide custom cursor (it relies on smooth animation) */
    #custom-cursor,
    #cursor-dot {
        display: none !important;
    }

    /* Show text immediately */
    .text-reveal-word .word-inner {
        transform: translateY(0) !important;
    }

    /* Hide preloader instantly */
    #page-preloader {
        display: none !important;
    }

    /* No scroll indicator animation */
    #scroll-indicator {
        transition: none !important;
    }

    /* Disable noise texture animation */
    body::after {
        animation: none !important;
    }

    /* Disable tilt and magnetic effects */
    [data-tilt], [data-magnetic] {
        transform: none !important;
    }
}