/* ===================================================================
   TuxCorp — site theme
   Palette from logoTuxCorp.jpg:
     navy  #0c315a   gold #e4b450   white #ffffff
   =================================================================== */

:root {
    --navy:        #0c315a;
    --navy-soft:   #1a4d7a;
    --navy-dark:   #061a32;
    --gold:        #e4b450;
    --gold-dark:   #c89938;
    --gold-soft:   #f3d27a;
    --white:       #ffffff;
    --cream:       #fbf8f1;
    --surface:    #f5f7fb;
    --surface-2:  #eef2f8;
    --border:     #d8dee8;
    --ink:         #14213a;
    --ink-soft:    #4a5468;
    --ink-mute:   #6b7689;
    --error:       #c0392b;
    --ok:          #1f8a4c;

    --nav-h: 72px;
    --transition: all .35s cubic-bezier(.25,.46,.45,.94);
    --shadow-sm: 0 2px 8px rgba(12,49,90,.06);
    --shadow:    0 6px 24px rgba(12,49,90,.10);
    --shadow-lg: 0 12px 40px rgba(12,49,90,.16);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }

body {
    font-family: "Inter", system-ui, -apple-system, sans-serif;
    background: var(--white);
    color: var(--ink);
    line-height: 1.6;
    padding-top: var(--nav-h);
    overflow-x: hidden;
}

img, video { max-width: 100%; display: block; }

.sr-only {
    position: absolute !important;
    width: 1px; height: 1px;
    padding: 0; margin: -1px; overflow: hidden;
    clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}
.skip-link {
    position: absolute; top: -40px; left: 0;
    background: var(--gold); color: var(--navy);
    padding: .5rem 1rem; z-index: 3000;
    text-decoration: none; font-weight: 700;
}
.skip-link:focus { top: 0; }
:focus-visible { outline: 3px solid var(--gold); outline-offset: 2px; }

/* ===================================================================
   Navigation — FIXED at top
   =================================================================== */
.navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    height: var(--nav-h);
    display: flex; align-items: center; gap: 1rem;
    padding: 0 5%;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.logo {
    display: inline-flex; align-items: center; gap: .6rem;
    text-decoration: none; color: var(--navy);
    font-weight: 900; letter-spacing: .5px;
    font-size: 1.4rem;
    flex-shrink: 0;
}
.logo .logo-mark {
    width: 42px; height: 42px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--navy);
}
.logo .logo-word span { color: var(--gold-dark); }

.nav-links {
    display: flex; list-style: none;
    margin-left: auto;
    align-items: center;
}
.nav-links li a {
    color: var(--ink); text-decoration: none;
    margin-left: 1.75rem; font-weight: 600;
    transition: var(--transition);
    position: relative; padding: .25rem 0;
    white-space: nowrap;
}
.nav-links li a::after {
    content: ""; position: absolute; left: 0; right: 0; bottom: -4px;
    height: 2px; background: var(--gold);
    transform: scaleX(0); transform-origin: left;
    transition: transform .25s;
}
.nav-links li a:hover,
.nav-links li a[aria-current="page"] { color: var(--navy); }
.nav-links li a:hover::after,
.nav-links li a[aria-current="page"]::after { transform: scaleX(1); }

/* Language toggle (animated flag flip) */
.lang-toggle {
    position: relative;
    width: 38px; height: 38px;
    border-radius: 50%;
    border: 2px solid var(--border);
    padding: 0; background: var(--white);
    cursor: pointer;
    margin-left: 1.5rem;
    perspective: 600px;
    transition: transform .25s, border-color .25s;
    flex-shrink: 0;
}
.lang-toggle:hover { transform: scale(1.08); border-color: var(--gold); }
.lang-toggle:active { transform: scale(.94); }
.lang-toggle .flag {
    position: absolute; inset: 2px;
    border-radius: 50%; overflow: hidden;
    backface-visibility: hidden;
    transition: transform .6s cubic-bezier(.6,.2,.2,1), opacity .3s;
}
.lang-toggle .flag svg { width: 100%; height: 100%; display: block; }
.lang-toggle .flag-en { transform: rotateY(0deg); }
.lang-toggle .flag-bg { transform: rotateY(180deg); opacity: 0; }
.lang-toggle[data-lang="bg"] .flag-en { transform: rotateY(-180deg); opacity: 0; }
.lang-toggle[data-lang="bg"] .flag-bg { transform: rotateY(0deg); opacity: 1; }
.lang-toggle.spin .flag { transition-duration: .8s; }

/* Mobile hamburger */
.menu-toggle {
    display: none;
    flex-direction: column; gap: 5px;
    background: transparent; border: 0; cursor: pointer; padding: 8px;
    flex-shrink: 0;
}
.menu-toggle .bar {
    display: block; width: 26px; height: 3px;
    background: var(--navy); border-radius: 2px;
    transition: var(--transition);
    transform-origin: center;
}
/* Hamburger → X when open */
.navbar.is-open .menu-toggle .bar:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
}
.navbar.is-open .menu-toggle .bar:nth-child(2) {
    opacity: 0; transform: scaleX(0);
}
.navbar.is-open .menu-toggle .bar:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
}

/* ===================================================================
   Hero (home page) — FULL VIEWPORT
   =================================================================== */
.hero {
    position: relative; overflow: hidden;
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    text-align: center; padding: 4rem 20px;
    color: var(--white);
    background:
        linear-gradient(rgba(6,26,50,.65), rgba(12,49,90,.78)),
        url("https://images.unsplash.com/photo-1581091226825-a6a2a5aee158?auto=format&fit=crop&q=80&w=2070")
        center/cover;
}
.hero-full {
    min-height: calc(100vh - var(--nav-h));
    min-height: calc(100dvh - var(--nav-h));
}
.hero h1 {
    font-size: clamp(2.25rem, 6vw, 4.5rem);
    margin-bottom: 1rem; text-transform: uppercase;
    text-shadow: 0 2px 14px rgba(0,0,0,.35);
    letter-spacing: 1px;
}
.hero p {
    font-size: clamp(1rem, 2vw, 1.2rem);
    color: rgba(255,255,255,.92);
    max-width: 700px;
}
.hero .lead {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    max-width: 750px; margin-bottom: 2rem;
}

/* ===================================================================
   Detail hero — supports VIDEO backgrounds
   =================================================================== */
.detail-hero {
    position: relative; overflow: hidden;
    min-height: 55vh;
    display: flex; flex-direction: column;
    justify-content: center; align-items: center;
    text-align: center; padding: 4rem 20px;
    color: var(--white);
    background: var(--navy);
    isolation: isolate;
}
.detail-hero-content {
    position: relative; z-index: 3;
    max-width: 800px;
}
.detail-hero h1 {
    font-size: clamp(1.8rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
    text-shadow: 0 2px 14px rgba(0,0,0,.55);
}
.detail-hero .tagline {
    font-size: clamp(1rem, 2.2vw, 1.25rem);
    color: rgba(255,255,255,.96);
    max-width: 720px; margin: 0 auto;
    text-shadow: 0 1px 6px rgba(0,0,0,.5);
}

/* Video background */
.hero-bg {
    position: absolute; inset: 0; z-index: 0;
    overflow: hidden;
    background: var(--navy);
}
.hero-bg .hero-video {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    border: 0;
}
.hero-bg .hero-img {
    position: absolute; inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
}
/* Darken overlay on top of the video so white text is readable */
.hero-bg::after {
    content: "";
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(6,26,50,.55), rgba(12,49,90,.7));
    z-index: 1;
}
/* Tint variants per service */
.hero-bg.tint-cnc::after  { background: linear-gradient(180deg, rgba(12,49,90,.55), rgba(228,180,80,.25)); }
.hero-bg.tint-3d::after   { background: linear-gradient(180deg, rgba(12,49,90,.5),  rgba(12,49,90,.7)); }
.hero-bg.tint-web::after  { background: linear-gradient(180deg, rgba(6,26,50,.6),   rgba(12,49,90,.78)); }
.hero-bg.tint-host::after { background: linear-gradient(180deg, rgba(12,49,90,.55), rgba(26,77,122,.75)); }
.hero-bg.tint-ai::after   { background: linear-gradient(135deg, rgba(12,49,90,.55), rgba(142,45,226,.45)); }

/* ===================================================================
   Products overview grid + cards
   =================================================================== */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem; padding: 3rem 6%;
    background: var(--white);
}
.card {
    background: var(--white); padding: 1.75rem;
    border-radius: 14px; text-align: left;
    cursor: pointer; transition: var(--transition);
    border: 1px solid var(--border);
    color: var(--ink); text-decoration: none;
    display: flex; flex-direction: column;
    box-shadow: var(--shadow-sm);
    position: relative; overflow: hidden;
}
.card::before {
    content: ""; position: absolute; top: 0; left: 0; right: 0;
    height: 3px; background: var(--gold);
    transform: scaleX(0); transform-origin: left;
    transition: transform .3s;
}
.card:hover, .card:focus-visible {
    transform: translateY(-6px);
    border-color: var(--gold);
    box-shadow: var(--shadow-lg);
}
.card:hover::before, .card:focus-visible::before { transform: scaleX(1); }
.card .card-icon {
    width: 48px; height: 48px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--surface); color: var(--navy);
    border-radius: 12px; font-size: 1.5rem; font-weight: 900;
    margin-bottom: 1rem;
}
.card h3 { margin-bottom: .5rem; font-size: 1.25rem; color: var(--navy); }
.card p { color: var(--ink-soft); font-size: .95rem; flex: 1; }

/* ===================================================================
   Detail content area (light)
   =================================================================== */
.detail-content {
    padding: 3rem 6%;
    max-width: 1100px; margin: 0 auto;
    color: var(--ink);
    background: var(--white);
}
.detail-content h2 {
    font-size: clamp(1.5rem, 3vw, 2.2rem);
    margin: 2rem 0 1rem; color: var(--navy);
}
.detail-content h3 { margin: 1.25rem 0 .5rem; color: var(--navy); }
.detail-content p { margin-bottom: 1rem; color: var(--ink-soft); }
.detail-content ul { padding-left: 1.5rem; color: var(--ink-soft); margin-bottom: 1rem; }
.detail-content ul li { margin-bottom: .35rem; }
.detail-content a { color: var(--navy); font-weight: 600; }
.detail-content strong { color: var(--ink); }

.stat-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem; margin: 2rem 0; text-align: center;
}
.stat {
    background: var(--surface);
    padding: 1.25rem; border-radius: 12px;
    border: 1px solid var(--border);
}
.stat .num {
    display: block;
    font-size: clamp(1.5rem, 3vw, 2.2rem); font-weight: 900;
    color: var(--navy);
}
.stat .label { color: var(--ink-soft); font-size: .9rem; }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem; margin: 2rem 0;
}
.feature {
    background: var(--surface);
    padding: 1.5rem; border-radius: 12px;
    border: 1px solid var(--border);
    transition: var(--transition);
}
.feature:hover {
    border-color: var(--gold);
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}
.feature .icon {
    width: 44px; height: 44px;
    display: inline-flex; align-items: center; justify-content: center;
    background: var(--gold); color: var(--navy);
    border-radius: 10px; margin-bottom: .75rem;
    font-size: 1.4rem; font-weight: 900;
}
.feature h4 { margin-bottom: .5rem; font-size: 1.1rem; color: var(--navy); }
.feature p { color: var(--ink-soft); font-size: .95rem; margin: 0; }

.price-box {
    background: var(--surface);
    padding: 1.5rem;
    border-left: 4px solid var(--gold);
    margin: 1.25rem 0;
    border-radius: 6px;
}
.price-box .price {
    font-size: clamp(1.3rem, 2.5vw, 1.6rem); font-weight: 700;
    color: var(--navy);
}

.split {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem; margin: 1.5rem 0;
}
.split > div {
    background: var(--surface);
    padding: 1.5rem; border-radius: 12px;
    border: 1px solid var(--border);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem;
    counter-reset: step;
    margin: 1.5rem 0;
}
.steps > li {
    list-style: none;
    background: var(--surface);
    padding: 1.25rem;
    border-radius: 10px;
    border: 1px solid var(--border);
    position: relative;
    counter-increment: step;
    color: var(--ink-soft);
}
.steps > li::before {
    content: counter(step);
    position: absolute;
    top: -12px; left: 12px;
    width: 28px; height: 28px;
    border-radius: 50%;
    background: var(--gold); color: var(--navy);
    display: flex; align-items: center; justify-content: center;
    font-weight: 900;
    box-shadow: var(--shadow-sm);
}
.steps > li strong { color: var(--navy); }

details.faq {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 1rem 1.25rem; margin: .75rem 0;
}
details.faq summary {
    cursor: pointer; font-weight: 700;
    color: var(--navy);
    list-style: none;
}
details.faq summary::after {
    content: "+"; float: right;
    color: var(--gold-dark); font-weight: 900;
    transition: transform .25s;
}
details.faq[open] summary::after { content: "−"; }
details.faq p { margin-top: .75rem; color: var(--ink-soft); }

.cta-banner {
    background: linear-gradient(135deg, var(--navy), var(--navy-soft));
    color: var(--white);
    padding: 2.5rem 1.5rem; border-radius: 14px;
    margin: 2rem 0; text-align: center;
    box-shadow: var(--shadow);
}
.cta-banner h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); margin-bottom: .5rem; color: var(--white); }
.cta-banner p { color: rgba(255,255,255,.92); margin-bottom: 1rem; }

/* Contact form */
.contact-form {
    display: flex; flex-direction: column;
    gap: 1rem; margin-top: 1.5rem;
}
.contact-form label {
    font-weight: 700; margin-bottom: .25rem;
    display: block; color: var(--navy);
}
.contact-form input,
.contact-form textarea {
    padding: 1rem;
    background: var(--white);
    border: 1.5px solid var(--border);
    color: var(--ink); border-radius: 8px;
    font: inherit; width: 100%;
    transition: var(--transition);
}
.contact-form input:focus,
.contact-form textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 3px rgba(228,180,80,.18);
    outline: none;
}
.form-status {
    margin-top: .5rem; min-height: 1.5em;
    font-weight: 700;
}
.form-status.ok    { color: var(--ok); }
.form-status.err   { color: var(--error); }
.form-status.busy  { color: var(--ink-mute); }
.fallback {
    color: var(--ink-mute); font-size: .9rem;
    margin-top: .5rem;
}
.fallback a { color: var(--navy); }
.contact-meta {
    display: flex; gap: 1rem; flex-wrap: wrap;
    margin: .75rem 0 1.5rem;
    color: var(--ink-soft);
}
.contact-meta a { color: var(--navy); text-decoration: none; font-weight: 600; }
.contact-meta a:hover { color: var(--gold-dark); }

/* Buttons */
.btn {
    padding: .9rem 1.8rem;
    background: var(--gold);
    border: 0; color: var(--navy);
    font-weight: 800;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: .5px;
    border-radius: 8px;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    box-shadow: var(--shadow-sm);
}
.btn:hover, .btn:focus-visible {
    background: var(--gold-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}
.btn[disabled] { opacity: .55; cursor: progress; }
.btn-light {
    background: var(--white); color: var(--navy);
}
.btn-light:hover { background: var(--gold); }
.btn-outline {
    background: transparent; border: 2px solid var(--gold); color: var(--gold);
}
.btn-outline:hover { background: var(--gold); color: var(--navy); }

/* Animations */
.fade-in { animation: fadeIn .6s ease-in forwards; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to   { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
    *,*::before,*::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
        scroll-behavior: auto !important;
    }
    .hero-video { display: none; }
}

/* Footer */
footer {
    background: var(--navy);
    color: rgba(255,255,255,.85);
    padding: 3rem 1rem 1.5rem;
    border-top: 4px solid var(--gold);
}
.footer-inner {
    max-width: 900px; margin: 0 auto;
    text-align: center;
    display: flex; flex-direction: column;
    gap: 1rem; align-items: center;
}
.socials {
    display: flex; gap: 1rem; list-style: none;
    padding: 0; margin: 0;
}
.socials a {
    width: 42px; height: 42px;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: rgba(255,255,255,.08);
    color: var(--gold);
    border: 1.5px solid rgba(228,180,80,.4);
    transition: var(--transition);
}
.socials a:hover {
    color: var(--navy); background: var(--gold);
    border-color: var(--gold);
    transform: translateY(-3px);
}
.socials svg { width: 18px; height: 18px; }
.contact-line {
    color: rgba(255,255,255,.85);
    font-size: .95rem;
    line-height: 2;
}
.contact-line a { color: var(--gold); text-decoration: none; font-weight: 600; }
.contact-line a:hover { color: var(--gold-soft); text-decoration: underline; }
.contact-line .dot { margin: 0 .5rem; color: rgba(255,255,255,.4); }
.footer-links a { color: var(--gold); text-decoration: none; font-weight: 600; }
.footer-links a:hover { text-decoration: underline; }
.copyright { font-size: .9rem; color: rgba(255,255,255,.55); }

/* ===================================================================
   Responsive — tablet (≤960px) then phone (≤640px)
   =================================================================== */
@media (max-width: 960px) {
    .navbar { padding: 0 4%; }
    .nav-links li a { margin-left: 1.25rem; font-size: .95rem; }
    .lang-toggle { margin-left: 1rem; }
    .detail-hero { min-height: 45vh; padding: 3rem 16px; }
    .product-grid { padding: 2rem 4%; gap: 1.25rem; }
    .detail-content { padding: 2.5rem 4%; }
}

@media (max-width: 640px) {
    :root { --nav-h: 64px; }
    .navbar { padding: 0 4%; }
    .logo .logo-mark { width: 36px; height: 36px; }
    .logo { font-size: 1.2rem; gap: .4rem; }
    .menu-toggle { display: flex; margin-left: auto; order: 3; }
    .nav-links {
        order: 4; flex-basis: 100%;
        flex-direction: column; gap: 0;
        margin: 0;
        background: var(--white);
        border-top: 1px solid var(--border);
        display: none;
        position: absolute; top: var(--nav-h); left: 0; right: 0;
        box-shadow: var(--shadow-lg);
        max-height: calc(100vh - var(--nav-h));
        overflow-y: auto;
    }
    .nav-links li { width: 100%; }
    .nav-links li a {
        margin-left: 0; padding: 1rem 6%;
        display: block; width: 100%;
        border-bottom: 1px solid var(--border);
    }
    .nav-links li a::after { display: none; }
    .navbar.is-open { flex-wrap: wrap; height: auto; min-height: var(--nav-h); }
    .navbar.is-open .nav-links { display: flex; }
    .lang-toggle { margin-left: .5rem; order: 2; width: 34px; height: 34px; }
    .logo { order: 1; }
    .product-grid {
        grid-template-columns: 1fr;
        padding: 1.5rem 5%;
    }
    .detail-content {
        padding: 2rem 5%;
    }
    .stat-row {
        grid-template-columns: repeat(2, 1fr);
        gap: .75rem;
    }
    .feature-grid,
    .split,
    .steps {
        grid-template-columns: 1fr;
    }
    .contact-line .dot { display: none; }
    .contact-line a { display: inline-block; margin: 0 .5rem; }
    .cta-banner { padding: 1.75rem 1rem; }
    .btn { padding: .8rem 1.3rem; font-size: .9rem; }
}

@media (max-width: 400px) {
    .logo .logo-word { display: none; }
}