:root {
    --bg-main: #141517;
    --bg-card: #1f2125;
    --bg-card-hover: #282b30;
    --clr-red: #ef4444;
    --clr-green: #22c55e;
    --clr-blue: #3b82f6;
    --clr-yellow: #eab308;
}

body {
    background-color: var(--bg-main);
    font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
    overflow-x: hidden;
}

.ambient-glow {
    position: fixed;
    top: -160px;
    left: 50%;
    transform: translateX(-50%);
    width: 750px;
    height: 420px;
    background: radial-gradient(circle, rgba(59,130,246,0.13) 0%, rgba(34,197,94,0.08) 45%, rgba(0,0,0,0) 70%);
    pointer-events: none;
    z-index: 0;
}

.brand-logo {
    width: 42px;
    height: 42px;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.navbar-brand:hover .brand-logo {
    transform: rotate(90deg) scale(1.08);
}

.lang-btn {
    background: transparent;
    color: #a1a1aa;
    border: none;
    padding: 5px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    transition: all 0.2s ease;
}

.lang-btn.active {
    background-color: var(--clr-blue);
    color: #ffffff;
}

.logo-wrapper {
    display: inline-flex;
    padding: 20px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0) 70%);
    animation: floatLogo 5s ease-in-out infinite;
}

.hero-logo {
    width: 122px;
    height: 122px;
    filter: drop-shadow(0 10px 25px rgba(0,0,0,0.5));
    transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    cursor: pointer;
}

.hero-logo:hover {
    transform: rotate(180deg) scale(1.06);
}

@keyframes floatLogo {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.pro-gradient {
    background: linear-gradient(90deg, var(--clr-red), var(--clr-yellow), var(--clr-green), var(--clr-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-sub {
    max-width: 680px;
}

.spec-pill {
    background-color: var(--bg-card);
    padding: 8px 16px;
    border-radius: 50px;
    font-size: 13px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(255,255,255,0.05);
}

.btn-download {
    display: inline-flex;
    align-items: center;
    gap: 16px;
    padding: 15px 28px;
    border-radius: 14px;
    text-decoration: none;
    color: #ffffff;
    min-width: 280px;
    text-align: left;
    transition: all 0.28s ease;
}

.btn-installer {
    background-color: var(--clr-green);
    box-shadow: 0 10px 24px rgba(34, 197, 94, 0.25);
}

.btn-installer:hover {
    background-color: #16a34a;
    color: #ffffff;
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(34, 197, 94, 0.38);
}

.btn-archive {
    background-color: var(--bg-card);
    border: 1px solid var(--clr-blue);
    box-shadow: 0 10px 24px rgba(59, 130, 246, 0.12);
}

.btn-archive:hover {
    background-color: rgba(59, 130, 246, 0.15);
    color: #ffffff;
    transform: translateY(-4px);
    box-shadow: 0 14px 30px rgba(59, 130, 246, 0.25);
}

.btn-text-main {
    display: block;
    font-size: 16px;
    font-weight: 700;
}

.btn-text-sub {
    display: block;
    font-size: 12px;
    opacity: 0.85;
    font-weight: 400;
}

.feature-card {
    background-color: var(--bg-card);
    padding: 26px;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, background-color 0.3s ease;
    border: 1px solid rgba(255,255,255,0.04);
}

.feature-card:hover {
    background-color: var(--bg-card-hover);
    transform: translateY(-5px);
}

.feature-bar {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
}

.license-box {
    background-color: var(--bg-card);
    border-left: 4px solid var(--clr-yellow);
}

.feedback-card {
    background-color: var(--bg-card);
    max-width: 760px;
    border: 1px solid rgba(255,255,255,0.05);
}

.custom-input {
    background-color: #16181b !important;
    border-color: rgba(255,255,255,0.12) !important;
    color: #f4f4f5 !important;
}

.custom-input:focus {
    border-color: var(--clr-blue) !important;
    box-shadow: 0 0 0 0.2rem rgba(59, 130, 246, 0.2) !important;
}

.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}