/* =========================================
   NEXUS VERDE — Complete Theme Rewrite
   Color: Cyber Neon Green + Deep Navy
   Font: Space Grotesk + Sora
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Sora:wght@300;400;600;700;800&display=swap');

/* ---- Design Tokens ---- */
:root {
    --clr-bg:        #050d14;          /* deep midnight navy */
    --clr-bg2:       #081220;          /* section bg */
    --clr-card:      rgba(10, 22, 38, 0.85);
    --clr-glass:     rgba(6, 16, 28, 0.9);

    --clr-primary:   #00e676;          /* neon emerald */
    --clr-primary-d: #00c853;          /* darker neon */
    --clr-secondary: #0ff;             /* electric cyan */
    --clr-accent:    #ff4d6d;          /* coral pink */
    --clr-accent2:   #7e57ff;          /* violet */

    --clr-text:      #e8f1f8;
    --clr-muted:     #6b8aad;
    --clr-border:    rgba(0, 230, 118, 0.18);
    --clr-border2:   rgba(0, 255, 255, 0.1);

    --header-h:      80px;
    --header-bg:     rgba(5, 13, 20, 0.96);
    --radius:        8px;
    --radius-lg:     16px;

    --ease:          cubic-bezier(0.22, 1, 0.36, 1);
    --transition:    all 0.4s var(--ease);

    /* Glows */
    --glow-primary:  0 0 20px rgba(0, 230, 118, 0.35);
    --glow-cyan:     0 0 20px rgba(0, 255, 255, 0.3);
    --glow-accent:   0 0 20px rgba(255, 77, 109, 0.3);
}

/* ---- Reset ---- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html { scroll-behavior: smooth; font-size: 16px; }

body {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--clr-text);
    background-color: var(--clr-bg);
    line-height: 1.7;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse 80% 60% at 50% -10%, rgba(0, 230, 118, 0.08) 0%, transparent 60%),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(0, 255, 255, 0.05) 0%, transparent 50%);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Sora', sans-serif;
    line-height: 1.15;
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 3px; }

/* ---- Layout ---- */
.container {
    width: 92%;
    max-width: 1280px;
    margin: 0 auto;
}

.ambient-background {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    /* Animated grid lines */
    background-image:
        linear-gradient(rgba(0, 230, 118, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 230, 118, 0.04) 1px, transparent 1px);
    background-size: 60px 60px;
    animation: gridPan 40s linear infinite;
}
@keyframes gridPan {
    0%   { background-position: 0 0; }
    100% { background-position: 60px 60px; }
}

/* ---- Header ---- */
header {
    position: fixed;
    top: 0; left: 0;
    width: 100%;
    height: var(--header-h);
    display: flex;
    align-items: center;
    z-index: 2005;
    transition: var(--transition);
    border-bottom: 1px solid transparent;
}
header.scrolled {
    background: var(--header-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom-color: var(--clr-border);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(0,230,118,0.05);
}

.header-container {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 2.5rem;
    gap: 2rem;
}

/* Logo */
.logo img {
    height: 40px;
    filter: drop-shadow(var(--glow-primary));
    transition: var(--transition);
}
.logo img:hover {
    filter: drop-shadow(0 0 12px var(--clr-primary)) brightness(1.2);
}

/* Nav */
.nav-list ul {
    display: flex;
    gap: 0.25rem;
    align-items: center;
}
.nav-list a {
    font-weight: 600;
    font-size: 0.78rem;
    color: var(--clr-muted);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    padding: 0.4rem 0.85rem;
    border-radius: 4px;
    white-space: nowrap;
    position: relative;
    transition: var(--transition);
}
.nav-list a:hover {
    color: var(--clr-primary);
    background: rgba(0, 230, 118, 0.07);
}

/* Header CTA */
.header-auth .btn-signup {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--clr-primary);
    color: #030f08;
    padding: 0.55rem 1.3rem;
    font-size: 0.78rem;
    font-weight: 700;
    font-family: 'Sora', sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: var(--radius);
    border: none;
    box-shadow: var(--glow-primary);
    transition: var(--transition);
}
.header-auth .btn-signup:hover {
    background: #fff;
    color: #000;
    box-shadow: 0 0 30px rgba(255,255,255,0.3);
    transform: translateY(-2px);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    cursor: pointer;
    width: 42px; height: 42px;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 8px;
    z-index: 2001;
    transition: var(--transition);
}
.mobile-menu-toggle:hover { border-color: var(--clr-primary); }
.mobile-menu-toggle span {
    display: block;
    width: 20px; height: 2px;
    background: var(--clr-primary);
    border-radius: 2px;
    transition: var(--transition);
}
.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu-overlay {
    position: fixed; inset: 0;
    background: rgba(0, 0, 0, 0.75);
    z-index: 2004;
    opacity: 0; visibility: hidden;
    transition: var(--transition);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.mobile-menu-overlay.active { opacity: 1; visibility: visible; }
body.no-scroll { overflow: hidden; }

/* ---- Global Typography ---- */
.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-family: 'Sora', sans-serif;
    text-align: center;
    margin-bottom: 3rem;
    color: #fff;
    letter-spacing: -0.5px;
}
.section-title span { color: var(--clr-primary); }

/* ---- Footer ---- */
footer {
    background: #030810;
    padding: 5rem 5% 2rem;
    margin-top: 6rem;
    border-top: 1px solid var(--clr-border);
    position: relative;
    overflow: hidden;
}
footer::before {
    content: '';
    position: absolute;
    top: 0; left: 50%; transform: translateX(-50%);
    width: 600px; height: 1px;
    background: linear-gradient(90deg, transparent, var(--clr-primary), transparent);
}
footer::after {
    content: '';
    position: absolute;
    top: -200px; left: 50%; transform: translateX(-50%);
    width: 500px; height: 400px;
    background: radial-gradient(circle, rgba(0,230,118,0.06) 0%, transparent 70%);
    pointer-events: none;
}

.footer-top {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 4rem;
    margin-bottom: 4rem;
    position: relative; z-index: 2;
}
.footer-brand .footer-desc {
    color: var(--clr-muted);
    font-size: 0.9rem;
    margin-top: 1.2rem;
    max-width: 280px;
    line-height: 1.8;
}
.footer-nav h4, .footer-contact h4 {
    font-family: 'Sora', sans-serif;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--clr-primary);
    margin-bottom: 1.5rem;
}
.footer-nav ul, .footer-contact ul {
    display: flex; flex-direction: column; gap: 0.75rem;
}
.footer-nav a { color: var(--clr-muted); font-size: 0.9rem; }
.footer-nav a:hover { color: var(--clr-primary); padding-left: 6px; }
.footer-contact li {
    display: flex; align-items: center; gap: 10px;
    color: var(--clr-muted); font-size: 0.9rem;
}
.footer-contact li i { color: var(--clr-primary); }

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.05);
    padding-top: 2rem;
    display: flex; justify-content: space-between; align-items: center;
    font-size: 0.8rem;
    color: rgba(107, 138, 173, 0.6);
    position: relative; z-index: 2;
}
.footer-links a { color: var(--clr-primary); font-size: 0.8rem; }
.footer-links a:hover { color: #fff; }

/* ---- Mobile Bottom Bar ---- */
.mobile-bottom-bar { display: none; }

/* ---- Responsive ---- */
@media (max-width: 992px) {
    .nav-list {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 0; right: -100%;
        width: 280px; height: 100vh; height: 100dvh;
        background: #07111e;
        padding: 7rem 2rem 2rem;
        z-index: 2000;
        border-left: 1px solid var(--clr-border);
        box-shadow: -20px 0 60px rgba(0,0,0,0.8);
        transition: right 0.45s var(--ease);
        overflow-y: auto;
    }
    .nav-list.active { right: 0; }
    .nav-list ul { flex-direction: column; gap: 0.5rem; }
    .nav-list a { font-size: 0.95rem; padding: 0.75rem 1rem; display: block; }

    .mobile-menu-toggle { display: flex; }
    .header-auth .btn-signup { display: none; }
    .header-container { padding: 0 1.5rem; }

    .footer-top { grid-template-columns: 1fr; gap: 2.5rem; text-align: center; }
    .footer-brand .footer-desc { margin: 1rem auto; }
    .footer-nav ul, .footer-contact ul { align-items: center; }
    .footer-bottom { flex-direction: column; gap: 1rem; text-align: center; }
    .section-title { font-size: 2rem; }
}

@media (max-width: 768px) {
    .mobile-bottom-bar {
        display: flex;
        position: fixed;
        bottom: 0; left: 0; width: 100%;
        background: rgba(5, 13, 20, 0.98);
        border-top: 1px solid var(--clr-border);
        padding: 10px 15px;
        z-index: 1005;
        justify-content: center;
        gap: 10px;
    }
    .mobile-bottom-bar a {
        flex: 1; text-align: center; padding: 12px 8px;
        font-family: 'Sora', sans-serif; font-weight: 700;
        text-transform: uppercase; font-size: 0.8rem;
        letter-spacing: 0.5px;
        border-radius: var(--radius);
    }
    .mobile-bottom-bar .btn-login {
        border: 1px solid var(--clr-primary);
        color: var(--clr-primary);
    }
    .mobile-bottom-bar .btn-register {
        background: var(--clr-primary);
        color: #030f08;
        box-shadow: var(--glow-primary);
    }
    body { padding-bottom: 68px; }
}