/* ------------------------------
   CORE TOKENS
------------------------------ */
:root {
    --black: #000000;
    --dark-grey: #111111;
    --mid-grey: #444444;
    --light-grey: #f2f2f2;
    --white: #ffffff;
    --electric-blue: #00aef0;
}

/* ------------------------------
   GLOBAL
------------------------------ */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", Arial, sans-serif;
    color: var(--white);
    line-height: 1.6;
    background: var(--black);
    overflow-x: hidden;
}

section {
    padding: 80px 8%;
    position: relative;
    z-index: 1;
}

h1, h2, h3 {
    margin: 0 0 10px;
    font-weight: 700;
}

/* ------------------------------
   PARALLAX LAYERS
------------------------------ */
.parallax-layer {
    position: fixed;
    inset: 0;
    z-index: -10;
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    pointer-events: none;
}

.layer-front {
    background-image: url('background-front.png');
    opacity: 0.4;
}

/* ------------------------------
   HEADER
------------------------------ */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 20;
    background: #ffffff; /* white background */
    border-bottom: 1px solid rgba(0,0,0,0.1); /* subtle black line */
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 8%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo img {
    height: 100px;
}

.logo-text {
    font-weight: 700;
    letter-spacing: 0.08em;
    font-size: 2rem;
    text-transform: uppercase;
    color: #000000; /* black text */
}

.nav-links {
    display: flex;
    gap: 24px;
    font-size: 0.9rem;
}

.nav-links a {
    position: relative;
    color: #000000; /* black text */
    text-decoration: none;
    padding-bottom: 4px;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0;
    width: 0;
    height: 2px;
    background: #000000; /* black underline */
    transition: width 0.2s ease;
}

.nav-links a:hover::after {
    width: 100%;
}

/* ------------------------------
   BUTTONS
------------------------------ */
.btn {
    display: inline-block;
    padding: 12px 26px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary {
    background: var(--electric-blue);
    color: var(--black);
    border: 1px solid var(--electric-blue);
    box-shadow: 0 0 0 0 rgba(0,174,240,0.4);
}

.btn-primary:hover {
    box-shadow: 0 0 12px 0 rgba(0,174,240,0.7);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 1px solid var(--mid-grey);
}

.btn-outline:hover {
    border-color: var(--electric-blue);
    color: var(--electric-blue);
}

/* ------------------------------
   HERO
------------------------------ */
.hero {
    height: 100vh;
    background: url('hero.png') center/cover no-repeat;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 120px;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0,0,0,0.7),
        rgba(0,0,0,0.85)
    );
}

.hero-content {
    position: relative;
    max-width: 640px;
    margin-left: 8%;
    color: var(--white);
}

.hero h1 {
    font-size: 2.8rem;
    margin-bottom: 16px;
}

.hero p {
    margin-bottom: 24px;
    color: rgba(255,255,255,0.85);
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 20px;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.7);
}

/* ------------------------------
   SECTIONS
------------------------------ */
.section-heading {
    font-size: 1.8rem;
    margin-bottom: 30px;
    color: var(--white);
}

/* ADVANTAGE & SERVICES */
.grid-4,
.grid-3 {
    display: grid;
    gap: 30px;
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card,
.service {
    padding: 26px;
    border-radius: 6px;
    background: rgba(0,0,0,0.7);
    border: 1px solid rgba(255,255,255,0.06);
    color: var(--white);
}

.card h3,
.service h3 {
    margin-bottom: 8px;
    font-size: 1.05rem;
}

/* NETWORK */
.network-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.network-card {
    padding: 24px;
    border-radius: 6px;
    background: rgba(0,0,0,0.7);
    border: 1px solid rgba(255,255,255,0.06);
}

.network-note {
    margin-top: 20px;
    font-size: 0.9rem;
    color: rgba(255,255,255,0.8);
}

/* DARK SECTION */
.dark {
    background: rgba(0,0,0,0.9);
}

.dark-inner {
    max-width: 800px;
}

/* CONTACT */
.contact {
    text-align: center;
}

.contact p {
    max-width: 520px;
    margin: 0 auto 24px;
    color: rgba(255,255,255,0.85);
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ------------------------------
   FOOTER
------------------------------ */
.footer {
    background: #000;
    color: #fff;
    padding: 60px 8% 30px;
    margin-top: 60px;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
    justify-content: space-between;
}

.footer-col h3,
.footer-col h4 {
    margin-bottom: 12px;
    font-weight: 700;
}

.footer-col p {
    margin: 4px 0;
    color: rgba(255,255,255,0.85);
}

.footer-col a {
    display: block;
    margin: 4px 0;
    color: rgba(255,255,255,0.85);
    text-decoration: none;
    transition: color 0.2s ease;
}

.footer-col a:hover {
    color: var(--electric-blue);
}

.footer-bottom {
    text-align: center;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.15);
    font-size: 0.85rem;
    color: rgba(255,255,255,0.6);
}

/* Responsive footer */
@media (max-width: 768px) {
    .footer-inner {
        flex-direction: column;
        gap: 30px;
    }
}


/* ------------------------------
   RESPONSIVE
------------------------------ */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }

    .network-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }

    .hero {
        height: auto;
        padding: 140px 8% 80px;
    }

    .grid-4,
    .grid-3,
    .network-grid {
        grid-template-columns: 1fr;
    }

    .whatsapp-float {
        bottom: 16px;
        right: 16px;
    }
}

/* ------------------------------
   MOBILE HERO FIXES
------------------------------ */
@media (max-width: 600px) {

    /* Reduce hero height so content fits naturally */
    .hero {
        height: auto;
        padding: 140px 6% 60px;
        text-align: center;
    }

    /* Scale logo properly */
    .logo img {
        height: 32px;
    }

    .logo-text {
        font-size: 0.75rem;
        letter-spacing: 0.06em;
    }

    /* Fix hero title */
    .hero h1 {
        font-size: 1.9rem;
        line-height: 1.25;
        margin-bottom: 12px;
    }

    /* Fix hero paragraph */
    .hero p {
        font-size: 0.95rem;
        line-height: 1.45;
        margin-bottom: 20px;
    }

    /* Buttons stack better */
    .hero-actions {
        flex-direction: column;
        gap: 12px;
    }

    .btn {
        width: 100%;
        text-align: center;
        padding: 14px 0;
    }

    /* Meta text spacing */
    .hero-meta {
        flex-direction: column;
        gap: 6px;
        font-size: 0.8rem;
        margin-top: 16px;
    }
}

/* SIMPLE WHATSAPP BUTTON */
.whatsapp-simple {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 999;
    display: inline-block;
}

.whatsapp-simple img {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    box-shadow: 0 4px 12px rgba(0,0,0,0.4);
    background: #25D366; /* WhatsApp green if icon has transparency */
}