:root {
    --primary: #3b82f6;
    --dark: #0f172a;
    --text: #1f2937;
    --muted: #6b7280;
    --bg: #ffffff;
    --light: #e7eff8;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

a {
    text-decoration: none;
    color: inherit
}

.container {
    max-width: 1200px;
    margin: auto;
    padding: 0 24px;
}

section {
    padding: 70px 0; /*padding*/
}

h1 {
    font-size: 54px;
    line-height: 1.1
}

h2 {
    font-size: 38px;
    margin-bottom: 12px
}

h3 {
    font-size: 20px;
    margin-bottom: 8px
}

p {
    color: var(--muted)
}
/* BUTTON */
.kbtn {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    background: var(--primary);
    color: white;
    padding: 14px 34px;
    border-radius: 999px;
    font-weight: 600;
    transition: .3s;
    overflow: hidden;
}

.kbtn::after {
    content: "→";
    transition: .3s;
}

.kbtn:hover {
    transform: translateY(-3px);
}

.kbtn:hover::after {
    transform: translateX(6px);
}

.kbtn:active {
    transform: scale(.97);
}

/* CENTER */
.kcen {
    color: val(--dark);/*text color for h*/
    text-align: center;
}

.kcen p {
    color: val(--text); /*text color for p*/
}

/* ANIMATION FADE */
.kfade {
    opacity: 0;
    transform: translateY(40px);
    transition: .9s ease;
}

.kfade.show {
    opacity: 1;
    transform: none;
}

/* HEADER */
header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    transition: all .35s ease;
}

header.scrolled {
    box-shadow: 0 6px 30px rgba(0, 0, 0, 0.08);
    background: rgba(255, 255, 255, 0.95);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
    transition: height .3s ease;
}

header.scrolled .header-inner {
    height: 64px;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}


/* NAV FULL */
#main-nav {
    display: flex;
    align-items: center;
    gap: 28px;
}

#main-nav a {
    position: relative;
    display: inline-block; /*Under Line*/
    padding: 4px 0;
    font-weight: 500;
    color: var(--muted);
    transition: color .25s ease;
}

#main-nav a::after {
    content: "";
    position: absolute;
    left: 50%;
    bottom: -6px;
    width: 0;
    height: 2px;
    background: var(--primary);
    transform: translateX(-50%);
    transition: width .35s ease;
}

#main-nav a:hover {
    color: var(--text);
}

#main-nav a:hover::after {
    width: 100%;
}

/* Scroll Underline */
#main-nav a.active {
    color: var(--text);
}

#main-nav a.active::after {
    width: 100%;
}


/* ICON LANGUE */
.kmobile-icon {
    display: none;
    width: 100%;
    border-top: 1px solid #e5e7eb;
    margin-top: 16px;
    padding-top: 16px;
    text-align: center;
}

/* menu */
#menu-toggle {
    display: none;
    border: none;
    background: none;
    font-size: 26px;
    cursor: pointer;
}

/* MOBILE */
@media (max-width: 900px) {
    #menu-toggle {
        display: block;
    }

    #main-nav {
    position: fixed;
    top: 76px;
    left: 0;
    right: 0;
    background: white;
    flex-direction: column;
    gap: 20px;
    padding: 24px;
    transform: translateY(-120%);
    transition: transform .35s ease;
    box-shadow: 0 20px 40px rgba(0, 0, 0, .1);
    }

    header.scrolled #main-nav {
        top: 64px;
    }

    #main-nav.open {
        transform: translateY(0);
    }

    #main-nav a {
        font-size: 18px;
    }

    .kdesk-icon {
        display: none;
    }

    .kmobile-icon {
        display: block;
    }
}

/* LOGO */
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--text);
    height: 52px;
    width: auto;
    transform: translateY(-0px);
}

/* ICON */
.kicon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: rgba(59, 130, 246, .1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 20px;
}

/* HERO */
.khero {
    background: var(--light)
}

.khero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 60px;
    align-items: center;
}

.khero img {
    width: 100%;
    border-radius: 20px
}

/* SERVICES */
.kservices-grid {
    margin-top: 60px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.kservice-card {
    background: white;
    border-radius: 20px;
    padding: 36px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .05);
    transition: .35s;
    text-align: center;
}

.kservice-card:hover {
    background: rgba(59, 130, 246, 0.18);
    transition: .3s ease;
    transform: translateY(-8px)
}

.kservices-img {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: 14px;
    background: rgba(59, 130, 246, .1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    margin: 0 auto 20px;
}

/* USE CASE */
.kusecases {
    margin-top: 60px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 32px;
}

.kusecase {
    background: white;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .05);
    padding: 36px;
    border-radius: 20px;
    transition: .4s;
}

.kusecase:hover {
    background: rgba(59, 130, 246, 0.18);
    transition: .3s ease;
    transform: translateY(-8px)
}

/* PROCESS */
.ksteps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 32px;
    margin-top: 60px;
}

.kstep {
    background: white;
    box-shadow: 0 10px 40px rgba(0, 0, 0, .05);
    padding: 32px;
    border-radius: 16px;
    border-top: 4px solid var(--primary);
    transition: .4s;
}

.kstep:hover {
     background: rgba(59, 130, 246, 0.18);
    transition: .3s ease;
    transform: translateY(-8px)
}

/* CONTACT */
.kcta {
    background: var(--dark);
    color: var(--muted);
}

/* FOOTER */
footer {
    padding: 48px 0;
    text-align: center;
    font-size: 14px;
    color: var(--muted);
}

 /* SMOOTH SCROLL WHILE PRESS TAB */
html {
    scroll-behavior: smooth;
}

/* Section focus animation */
.section-focus {
    animation: focusGlow 1.2s ease;
}

@keyframes focusGlow {
    0% {
    box-shadow: 0 0 0 rgba(59, 130, 246, 0);
    }

    40% {
    box-shadow: 0 0 0 12px rgba(59, 130, 246, 0.15);
    }

    100% {
    box-shadow: 0 0 0 rgba(59, 130, 246, 0);
    }
}