/* === VARIABLES === */
:root {
    --bg-1: 6, 12, 26; /* deep navy */
    --bg-2: 12, 22, 48; /* darker blue */
    --accent1: 110, 78, 255; /* purple */
    --accent2: 0, 210, 255; /* aqua */
    --accent3: 255, 140, 97; /* coral */
    --glass: rgba(255, 255, 255, 0.03);
    --muted: rgba(255, 255, 255, 0.72);
    --card-shadow: 0 18px 50px rgba(2, 6, 23, 0.6);
    --radius-lg: 20px;
    --radius-md: 14px;
    --radius-sm: 10px;
    --max-page-width: 1280px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* reset / base */
* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    opacity: 0;
    transition: opacity 0.5s ease;
}

body.fade-in {
    opacity: 1;
}

body.fade-out {
    opacity: 0;
}

html,
body {
    height: 100%;
    margin: 0;
    padding: 0;
}
body {
    font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
    color: #e6eef8;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "kern" 1, "liga" 1;
    background: linear-gradient(
            180deg,
            rgba(var(--bg-1), 1) 0%,
            rgba(var(--bg-2), 1) 65%
        ),
        radial-gradient(
            1200px 600px at 10% 10%,
            rgba(var(--accent1), 0.08),
            transparent 15%
        ),
        radial-gradient(
            1000px 500px at 90% 90%,
            rgba(var(--accent2), 0.06),
            transparent 12%
        ),
        radial-gradient(
            800px 400px at 50% 50%,
            rgba(var(--accent3), 0.03),
            transparent 20%
        );
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* make sure blobs are behind everything */
.bg-blobs {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
}
.blob {
    position: absolute;
    filter: blur(60px);
    opacity: 0.22;
    transform: translate3d(0, 0, 0);
}
.b1 {
    width: 520px;
    height: 520px;
    left: -10%;
    top: -8%;
    background: radial-gradient(
        circle at 30% 30%,
        rgba(var(--accent1), 1),
        rgba(var(--accent2), 1)
    );
    animation: float1 14s ease-in-out infinite;
}
.b2 {
    width: 420px;
    height: 420px;
    right: -6%;
    top: 6%;
    background: radial-gradient(
        circle at 70% 30%,
        rgba(var(--accent3), 1),
        rgba(var(--accent2), 1)
    );
    animation: float2 16s ease-in-out infinite;
}
.b3 {
    width: 320px;
    height: 320px;
    left: 50%;
    bottom: -12%;
    background: radial-gradient(
        circle at 50% 50%,
        rgba(var(--accent2), 1),
        rgba(var(--accent1), 1)
    );
    animation: float3 18s ease-in-out infinite;
}

@keyframes float1 {
    0% {
        transform: translateY(0) rotate(0);
    }
    50% {
        transform: translateY(28px) rotate(6deg);
    }
    100% {
        transform: translateY(0) rotate(0);
    }
}
@keyframes float2 {
    0% {
        transform: translateY(0) rotate(0);
    }
    50% {
        transform: translateY(-22px) rotate(-5deg);
    }
    100% {
        transform: translateY(0) rotate(0);
    }
}
@keyframes float3 {
    0% {
        transform: translateY(0) rotate(0);
    }
    50% {
        transform: translateY(36px) rotate(10deg);
    }
    100% {
        transform: translateY(0) rotate(0);
    }
}

/* content container stacking */
.container,
.hero,
section {
    position: relative;
    z-index: 2;
    max-width: var(--max-page-width);
}

/* NAV */
.navbar {
    background: transparent;
    padding-top: 0.75rem;
    padding-bottom: 0.75rem;
    transition: all var(--transition-base);
}
.navbar-glass {
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.04),
        rgba(255, 255, 255, 0.02)
    );
    border-radius: var(--radius-md);
    padding: 0.6rem 1rem;
    border: 1px solid rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    box-shadow: 0 8px 32px rgba(2, 6, 23, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
}
.navbar-glass:hover {
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 12px 40px rgba(2, 6, 23, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}
.nav-link {
    position: relative;
    transition: color var(--transition-fast);
    font-weight: 500;
    padding: 0.5rem 0.75rem !important;
    border-radius: var(--radius-sm);
}
.nav-link::after {
    content: "";
    position: absolute;
    bottom: 0.25rem;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 60%;
    height: 2px;
    background: linear-gradient(
        90deg,
        rgba(var(--accent1), 1),
        rgba(var(--accent2), 1)
    );
    border-radius: 2px;
    transition: transform var(--transition-base);
}
.nav-link:hover,
.nav-link:focus {
    color: #fff !important;
}
.nav-link:hover::after,
.nav-link:focus::after {
    transform: translateX(-50%) scaleX(1);
}

/* brand */
.brand-badge {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: linear-gradient(
        135deg,
        rgba(var(--accent1), 1),
        rgba(var(--accent2), 1)
    );
    display: inline-grid;
    place-items: center;
    font-weight: 800;
    color: white;
    font-family: monospace;
    font-size: 1.25rem;
    box-shadow: 0 8px 30px rgba(2, 6, 23, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.brand-badge::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.2), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}
.navbar-brand:hover .brand-badge {
    transform: scale(1.05) rotate(2deg);
    box-shadow: 0 12px 40px rgba(var(--accent1), 0.4),
        0 0 0 1px rgba(255, 255, 255, 0.15) inset;
}
.navbar-brand:hover .brand-badge::before {
    opacity: 1;
}

/* HERO */
.hero {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}
.device-card {
    width: 380px;
    max-width: 92%;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    padding: 16px;
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.04),
        rgba(255, 255, 255, 0.02)
    );
    border: 1px solid rgba(255, 255, 255, 0.06);
    box-shadow: var(--card-shadow), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.device-card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        120deg,
        transparent 0%,
        rgba(var(--accent1), 0.1) 50%,
        transparent 100%
    );
    transform: translateX(-100%) skewX(-15deg);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    pointer-events: none;
    z-index: 1;
}
.device-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 24px 60px rgba(var(--accent1), 0.3),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.1);
}
.device-card:hover::before {
    transform: translateX(200%) skewX(-15deg);
}
.screenshot {
    border-radius: var(--radius-md);
    width: 100%;
    height: auto;
    display: block;
    position: relative;
    z-index: 2;
    transition: transform var(--transition-slow);
}
.device-card:hover .screenshot {
    transform: scale(1.02);
}

/* Hero text */
.display-5 {
    color: #fff;
    letter-spacing: -0.02em;
    line-height: 1.2;
    font-weight: 800;
    margin-bottom: 1.25rem;
    background: linear-gradient(135deg, #fff 0%, rgba(255, 255, 255, 0.9) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.lead {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.15rem;
    line-height: 1.7;
    font-weight: 400;
    margin-bottom: 1.5rem;
}

/* Sections: subtle band & padding */
section {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}
#features,
#about,
#download {
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

/* Section inner card wrapper for subtle separation */
.section-inner {
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.02),
        rgba(255, 255, 255, 0.01)
    );
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.04);
    box-shadow: 0 20px 50px rgba(2, 6, 23, 0.4),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
    transition: all var(--transition-base);
}
.section-inner:hover {
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow: 0 24px 60px rgba(2, 6, 23, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

/* section titles */
.section-title {
    font-weight: 800;
    margin-bottom: 0.75rem;
    color: #fff;
    font-size: 2.25rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* CARDS */
.card {
    background: linear-gradient(
        180deg,
        rgba(0, 0, 0, 0.2),
        rgba(255, 255, 255, 0.03)
    );
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.04);
    color: #eaf2ff;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.card::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(var(--accent1), 0.05) 0%,
        transparent 50%,
        rgba(var(--accent2), 0.05) 100%
    );
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}
.feature-card,
.download-card,
.about-card {
    border-radius: var(--radius-md);
    padding: 0;
    overflow: hidden;
}
.feature-card .card-body,
.about-card .card-body,
.download-card .card-body {
    background: transparent;
    padding: 1.5rem;
    position: relative;
    z-index: 1;
}

/* enhanced hover */
.about-card:hover,
.feature-card:hover,
.download-card:hover,
.system-card:hover {
    transform: translateY(-8px) scale(1.01);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 28px 80px rgba(2, 6, 23, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset,
        0 0 40px rgba(var(--accent1), 0.15);
}
.card:hover::before {
    opacity: 1;
}
.feature-card .card-title,
.download-card .card-title {
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-size: 1.25rem;
    color: #fff;
}
.feature-card .card-text {
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Buttons */
.btn-glow {
    background: linear-gradient(
        90deg,
        rgba(var(--accent1), 1),
        rgba(var(--accent2), 1)
    );
    color: #fff;
    border: none;
    padding: 14px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    box-shadow: 0 8px 38px rgba(12, 8, 60, 0.35),
        0 0 0 1px rgba(255, 255, 255, 0.1) inset;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    animation: pulse 2s infinite;
}
.btn-glow::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(255, 255, 255, 0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.5s ease;
}
.btn-glow:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 48px rgba(var(--accent1), 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.15) inset;
}
.btn-glow:hover::before {
    transform: translateX(100%);
}
.btn-glow:active {
    transform: translateY(0);
}
.btn-outline-light {
    border-radius: var(--radius-md);
    padding: 12px 20px;
    border: 1.5px solid rgba(255, 255, 255, 0.2);
    font-weight: 600;
    transition: all var(--transition-base);
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(8px);
}
.btn-outline-light:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(2, 6, 23, 0.4);
    color: #fff !important;
}

/* different looking button */
.btn-dif {
    color: #000;
    background-color: #fff;
}
.btn-dif:hover {
    background-color: transparent;
    color: #fff;
}

/* download buttons */
.btn-download {
    display: inline-block;
    text-align: center;
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.06),
        rgba(255, 255, 255, 0.03)
    );
    color: #fff;
    border: 1px solid rgba(255, 255, 255, 0.08);
    font-weight: 600;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}
.btn-download::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(var(--accent1), 0.1),
        rgba(var(--accent2), 0.1)
    );
    opacity: 0;
    transition: opacity var(--transition-base);
}
.btn-download:hover {
    transform: translateY(-4px);
    border-color: rgba(255, 255, 255, 0.12);
    box-shadow: 0 20px 50px rgba(2, 6, 23, 0.5),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}
.btn-download:hover::before {
    opacity: 1;
}
.btn-download:active {
    transform: translateY(-2px);
}

/* Gallery band */
#gallery {
    background: linear-gradient(
        180deg,
        rgba(255, 255, 255, 0.01),
        rgba(255, 255, 255, 0.005)
    );
    border-radius: 14px;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(2, 6, 23, 0.28);
}

/* gallery cards */
.gallery-card {
    overflow: hidden;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.05);
    cursor: pointer;
    position: relative;
}
.gallery-card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        transparent 0%,
        rgba(var(--accent1), 0.1) 100%
    );
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
    z-index: 1;
}
.gallery-card img {
    display: block;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}
.gallery-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 24px 50px rgba(2, 6, 23, 0.7),
        0 0 0 1px rgba(255, 255, 255, 0.05) inset;
}
.gallery-card:hover::after {
    opacity: 1;
}
.gallery-card:hover img {
    transform: scale(1.05);
}
.gallery-card:focus {
    outline: 2px solid rgba(var(--accent1), 0.5);
    outline-offset: 2px;
}

/* small utilities */
.text-muted {
    color: rgba(255, 255, 255, 0.75) !important;
    font-size: 1rem;
    line-height: 1.6;
}
small {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.5;
}

/* Icon animations */
.feature-card i,
.download-card i {
    transition: all var(--transition-base);
    display: inline-block;
}
.feature-card:hover i,
.download-card:hover i {
    transform: scale(1.1) translateY(-2px);
}
footer {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    color: rgba(255, 255, 255, 0.7);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    margin-top: var(--spacing-xl);
}
footer a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: 500;
}
footer a:hover {
    color: rgba(var(--accent2), 1);
    text-decoration: underline;
}

/* responsive */
@media (max-width: 991px) {
    .device-card {
        width: 300px;
    }
    .gallery-card img {
        height: 180px;
    }
    .section-title {
        font-size: 1.875rem;
    }
    .hero {
        padding-top: var(--spacing-lg);
        padding-bottom: var(--spacing-lg);
    }
}
@media (max-width: 768px) {
    .navbar-glass {
        padding: 0.5rem 0.75rem;
    }
    .section-inner {
        padding: var(--spacing-md);
    }
    .display-5 {
        font-size: 2rem;
    }
    .lead {
        font-size: 1.05rem;
    }
}
@media (max-width: 575px) {
    .display-5 {
        font-size: 1.75rem;
    }
    .screenshot {
        max-height: 520px;
    }
    .gallery-card img {
        height: 150px;
    }
    .section-title {
        font-size: 1.5rem;
    }
    .feature-card .card-body,
    .download-card .card-body,
    .about-card .card-body {
        padding: 1.25rem;
    }
    .btn-glow,
    .btn-outline-light {
        font-size: 0.95rem;
        padding: 12px 20px;
    }
}

/* slightly dark backdrop inside modal content for focus */
.modal-content.bg-transparent {
    background: rgba(6, 10, 25, 0.75);
    backdrop-filter: blur(12px) saturate(180%);
    -webkit-backdrop-filter: blur(12px) saturate(180%);
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 60px rgba(2, 6, 23, 0.8);
}

/* ---- modal crossfade helpers ---- */
/* modal image fade */
#modalImage {
    transition: opacity 0.45s ease;
    opacity: 0.4;
    will-change: opacity;
}
#modalImage.visible {
    opacity: 1;
}

/* modal content darken */
.modal-content.bg-transparent {
    background: rgba(6, 10, 25, 0.75);
    backdrop-filter: blur(6px);
    border-radius: 12px;
    overflow: hidden;
}

/* ---- full-page blur when modal open ---- */
#site-root.blurred {
    filter: blur(8px) brightness(0.86);
    transition: filter 0.22s ease;
    pointer-events: none; /* prevent interaction while modal open */
    user-select: none;
}

/* re-enable pointer events for modal close button (modal is outside site-root) */
/* ---- report button ---- */
.btn-report {
    position: fixed;
    right: 20px;
    bottom: 20px;
    z-index: 1200;
    border-radius: var(--radius-md);
    padding: 14px 18px;
    font-weight: 600;
    color: #fff;
    border: none;
    font-size: 0.95rem;
    transition: all var(--transition-base);

    background-repeat: no-repeat;
    background-size: 120% 100%;
    background-position: center;

    /* subtle inset highlight + drop shadow for depth */
    box-shadow: 0 12px 36px rgba(6, 10, 25, 0.6),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);

    /* avoid rasterization artifacts */
    -webkit-font-smoothing: antialiased;
    transform: translateZ(0);

    /* accessibility */
    outline: none;
}

.btn-report:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 16px 44px rgba(6, 10, 25, 0.7),
        inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.btn-report:active {
    transform: translateY(0) scale(1);
}

/* focus style */
.btn-report:focus {
    box-shadow: 0 12px 36px rgba(6, 10, 25, 0.6),
        0 0 0 4px rgba(110, 78, 255, 0.12);
}

/* slightly smaller on phones */
@media (max-width: 575px) {
    .btn-report {
        right: 12px;
        bottom: 12px;
        padding: 10px 12px;
        font-size: 14px;
    }
}

/* ---- page transition classes ---- */
body.fade-in {
    opacity: 1;
    transition: opacity 0.2s ease;
}
body.fade-out {
    opacity: 0;
    transition: opacity 0.2s ease;
}

/* accessibility: reduce motion */
@media (prefers-reduced-motion: reduce) {
    .blob,
    * {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
    }
}

/* System requirement cards */
.system-card {
    transition: all var(--transition-base);
}
.system-card .card-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 0.75rem;
}
.system-card .card-title i {
    font-size: 1.25rem;
    color: rgba(var(--accent1), 1);
    transition: transform var(--transition-base);
}
.system-card:hover .card-title i {
    transform: scale(1.15) rotate(5deg);
}

/* Release notes specific */
.release-card {
    background: rgba(255, 255, 255, 0.08);
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    border: 1px solid rgba(255, 255, 255, 0.04);
}
.release-card:hover {
    transform: translateY(-4px) scale(1.01);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.08);
}
.tag-badge {
    display: inline-block;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    margin-left: 0.25rem;
    color: #fff;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.25);
    transition: all var(--transition-fast);
}
.tag-badge:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.4);
}

@keyframes pulse {
    0% {
        box-shadow: 0 8px 38px rgba(12, 8, 60, 0.35),
            0 0 0 0 rgba(var(--accent1), 0.7);
    }
    70% {
        box-shadow: 0 8px 38px rgba(12, 8, 60, 0.35),
            0 0 0 10px rgba(var(--accent1), 0);
    }
    100% {
        box-shadow: 0 8px 38px rgba(12, 8, 60, 0.35),
            0 0 0 0 rgba(var(--accent1), 0);
    }
}

/* Focus states for accessibility */
*:focus-visible {
    outline: 2px solid rgba(var(--accent1), 0.6);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Smooth scroll behavior */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

/* Loading states */
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* Improved text selection */
::selection {
    background: rgba(var(--accent1), 0.3);
    color: #fff;
}
::-moz-selection {
    background: rgba(var(--accent1), 0.3);
    color: #fff;
}