/*
==============================================================================
  InfluenZZa! Base CSS
  Minimal theme-ready foundation
==============================================================================
*/
:root {
    color-scheme: dark;
    --font-main: "Inter", "Segoe UI", Arial, sans-serif;
    --font-display: "Anton", "Bebas Neue", Impact, sans-serif;
    --container-max: 1600px;
    --container-pad: clamp(20px, 4vw, 64px);
    --radius-sm: 6px;
    --radius-ss: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --transition-fast: 160ms ease;
    --transition-base: 260ms ease;
}
/* Default / Night theme */
:root,
[data-theme="night"] {
    --color-bg: #000000;
    --color-bg-soft: #0b0b12;
    --color-surface: #11111a;
    --color-surface-2: #171724;
    --color-text: #f4f4f6;
    --color-text-soft: #c8c8d0;
    --color-text-muted: #8d8d99;
    --color-text-inverted: #050507;
    --color-border: rgba(255, 255, 255, 0.12);
    --color-border-strong: rgba(255, 0, 136, 0.45);
    --color-pink: #ff0088;
    --color-pink-soft: #ff49a6;
    --color-acid: #dfff00;
    --color-acid-soft: #efff5a;
    --color-purple: #8b00ff;
    --color-green: #18ff88;
    --shadow-panel: 0 24px 80px rgba(0, 0, 0, 0.55);
    --glow-pink: 0 0 40px rgba(255, 0, 136, 0.45);
    --glow-acid: 0 0 28px rgba(223, 255, 0, 0.42);
    --page-bg:
        radial-gradient(circle at 82% 18%, rgba(139, 0, 255, 0.25), transparent 34%),
        radial-gradient(circle at 88% 58%, rgba(255, 0, 136, 0.18), transparent 36%),
        radial-gradient(circle at 18% 20%, rgba(255, 0, 136, 0.08), transparent 32%),
        linear-gradient(180deg, #07070b2a 0%, #09090e 100%);
}
/* Day theme placeholder */
[data-theme="day"] {
    color-scheme: light;
    --color-bg: #f5f5f7;
    --color-bg-soft: #ffffff;
    --color-surface: #ffffff;
    --color-surface-2: #eeeeF4;
    --color-text: #101016;
    --color-text-soft: #33333d;
    --color-text-muted: #6d6d78;
    --color-text-inverted: #050507;
    --color-border: rgba(0, 0, 0, 0.12);
    --color-border-strong: rgba(230, 0, 122, 0.35);
    --color-pink: #e6007a;
    --color-pink-soft: #ff3f9e;
    --color-acid: #9dcc00;
    --color-acid-soft: #c3ea2a;
    --color-purple: #6f00d8;
    --color-green: #00b86b;
    --shadow-panel: 0 24px 80px rgba(0, 0, 0, 0.12);
    --glow-pink: 0 0 36px rgba(230, 0, 122, 0.18);
    --glow-acid: 0 0 24px rgba(157, 204, 0, 0.20);
    --page-bg:
        radial-gradient(circle at 82% 18%, rgba(111, 0, 216, 0.10), transparent 34%),
        radial-gradient(circle at 88% 58%, rgba(230, 0, 122, 0.08), transparent 36%),
        linear-gradient(180deg, #ffffff 0%, #f5f5f7 100%);
}
/* Optional future theme */
[data-theme="toxic"] {
    color-scheme: dark;
    --color-bg: #050607;
    --color-bg-soft: #080b09;
    --color-surface: #0d120f;
    --color-surface-2: #121a15;
    --color-text: #f5fff5;
    --color-text-soft: #c8d6c8;
    --color-text-muted: #7f907f;
    --color-text-inverted: #050507;
    --color-border: rgba(223, 255, 0, 0.14);
    --color-border-strong: rgba(223, 255, 0, 0.55);
    --color-pink: #ff0088;
    --color-pink-soft: #ff4fac;
    --color-acid: #dfff00;
    --color-acid-soft: #f4ff70;
    --color-purple: #6f00ff;
    --color-green: #18ff88;
    --shadow-panel: 0 24px 80px rgba(0, 0, 0, 0.65);
    --glow-pink: 0 0 36px rgba(255, 0, 136, 0.35);
    --glow-acid: 0 0 42px rgba(223, 255, 0, 0.48);
    --page-bg:
        radial-gradient(circle at 80% 20%, rgba(223, 255, 0, 0.14), transparent 32%),
        radial-gradient(circle at 20% 70%, rgba(255, 0, 136, 0.12), transparent 34%),
        linear-gradient(180deg, #050607 0%, #070908 100%);
}

/* ==========================================================================
   RESET
========================================================================== */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
body {
    min-height: 100vh;
    overflow-x: hidden;
    font-family: var(--font-main);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    background-color: var(--color-bg);
}
img,
svg,
video,
canvas {
    display: block;
    max-width: 100%;
}
button,
input,
textarea,
select {
    font: inherit;
}
button {
    cursor: pointer;
    border: 0;
    background: transparent;
}
a {
    color: inherit;
    text-decoration: none;
}
ul,
ol {
    list-style: none;
}

/* ==========================================================================
   BASE TYPOGRAPHY
========================================================================== */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--color-text);
    font-weight: 800;
    line-height: 1.02;
}
h1,
.display {
    font-family: var(--font-display);
    text-transform: uppercase;
    letter-spacing: -0.04em;
}
h1 {
    font-size: clamp(4rem, 8vw, 9rem);
}
h2 {
    font-size: clamp(2.4rem, 5vw, 5rem);
}
h3 {
    font-size: clamp(1.8rem, 3vw, 3rem);
}
p {
    color: var(--color-text-soft);
    font-size: clamp(1rem, 1.2vw, 1.25rem);
}
small {
    color: var(--color-text-muted);
}

/* ==========================================================================
   LAYOUT HELPERS
========================================================================== */
.container {
    width: min(var(--container-max), calc(100vw - (var(--container-pad) * 2)));
    margin-inline: auto;
}
.fullscreen {
    min-height: 100vh;
}
.section {
    position: relative;
    padding-block: clamp(64px, 8vw, 140px); 
}

/* ==========================================================================
   UI HELPERS
========================================================================== */
.surface {
    background: color-mix(in srgb, var(--color-surface) 88%, transparent);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-panel);
}
.border-hot {
    border-color: var(--color-border-strong);
}
.glow-pink {
    box-shadow: var(--glow-pink);
}
.glow-acid {
    box-shadow: var(--glow-acid);
}
.text-pink {
    color: var(--color-pink);
}
.text-acid {
    color: var(--color-acid);
}
.text-muted {
    color: var(--color-text-muted);
}

/* ==========================================================================
   BUTTON BASE
========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 48px;
    min-width: 132px;
    gap: 0.75rem;
    padding: 0 1.5rem;
    font-family: var(--font-main);
    font-weight: 600;
    font-size: 17px;
    line-height: 1;
    letter-spacing: -0.01em;
    text-decoration: none;
    white-space: nowrap;
    border-radius:var(--radius-ss);
    transition:
        transform var(--transition-base),
        box-shadow var(--transition-base),
        border-color var(--transition-base),
        background var(--transition-base);
}
.btn:hover {
    transform: translateY(-1px);
}
.btn-primary {
    color: var(--color-text-inverted);
    background: var(--color-acid);
    box-shadow: var(--glow-acid);
}
.btn-secondary {
    color: var(--color-text);
    border: 1px solid var(--color-pink);
    background: transparent;
}
.btn-secondary:hover {
    box-shadow: var(--glow-pink);
}

/* ==========================================================================
   ACCESSIBILITY
========================================================================== */
.visually-hidden {
    position: absolute !important;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/*==============================================================================
    HEADER NAVIGATION
==============================================================================*/
.header-desktop-nav{
    display:flex;
    justify-content:center;
    align-items:center;
    flex-grow: 4;
    flex-shrink: 2;
    align-self: center; 
    width:100%;
}

.header-menu{
    display:flex;
    align-items:center;
    gap:72px;
    margin:0;
    padding:0;
    list-style:none;
}
.header-menu li{
    margin:0;
    padding:0;
}
.header-menu a{
    position:relative;
    display:inline-block;
    color:var(--color-text);
    text-decoration:none;
    font-family:var(--font-main);
    font-size:17px;
    font-weight:500;
    letter-spacing:-0.01em;
    opacity:.88;
    transition:
        color .18s ease,
        opacity .18s ease;
}
.header-menu a:hover{
    color:#ffffff;
    opacity:1;
}
.header-menu a::after{
    content:"";
    position:absolute;
    left:0;
    bottom:-8px;
    width:100%;
    height:2px;
    background:var(--color-acid);
    transform:scaleX(0);
    transform-origin:center;
    transition:transform .22s ease;
}
.header-menu a:hover::after{
    transform:scaleX(1);
}
/* ==========================================================================
   RESPONSIVE BASE
========================================================================== */

@media (max-width: 768px) {
    :root {
        --container-pad: 20px;
    }
    body {
        font-size: 15px;
    }
    .btn {
        width: 100%;
    }
}




/* Mobile */
@media (max-width: 768px) {
    .feature-strip {
        grid-template-columns: 1fr;
    }

    .feature-cell {
        min-height: 170px;
        padding: 32px 24px;
        border-left: 0;
        border-top: 1px solid rgba(255, 0, 136, .24);
    }

    .feature-cell:first-child {
        border-top: 0;
    }

    .feature-cell-brand {
        align-items: center;
        text-align: center;
    }

    .feature-cell-brand img {
        width: min(320px, 85vw);
    }

    .feature-icon {
        width: 64px;
        height: 64px;
        margin-bottom: 20px;
    }
}

/* Mobile: 2 x 2 */
@media (max-width: 768px) {
    .hero-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 28px 24px;
        margin-top: 40px;
    }

    .hero-stat {
        grid-template-columns: 38px auto;
        column-gap: 12px;
    }

    .hero-stat-icon {
        width: 38px;
        height: 38px;
    }

    .hero-stat-value {
        font-size: 1.65rem;
    }

    .hero-stat-label {
        font-size: .9rem;
    }
}