/* =============================================
   Relkor Cloud Solutions — Stylesheet
   ============================================= */

/* ---------- Design Tokens ---------- */
:root {
  /* Brand */
  --clr-primary: #0176D3;
  --clr-primary-dark: #014486;
  --clr-primary-light: #1B96FF;
  --clr-accent: #04E1CB;

  /* Neutrals */
  --clr-dark: #0F1923;
  --clr-dark-2: #16325C;
  --clr-gray-900: #181818;
  --clr-gray-700: #444;
  --clr-gray-500: #6B7280;
  --clr-gray-300: #D1D5DB;
  --clr-gray-100: #F3F4F6;
  --clr-white: #FFFFFF;

  /* Typography */
  --ff-body: 'Inter', system-ui, -apple-system, sans-serif;
  --fs-base: 1rem;       /* 16px */
  --fs-sm: 0.875rem;     /* 14px */
  --fs-lg: 1.125rem;     /* 18px */
  --fs-xl: 1.25rem;      /* 20px */
  --fs-2xl: 1.5rem;      /* 24px */
  --fs-3xl: 2rem;        /* 32px */
  --fs-4xl: 2.75rem;     /* 44px */
  --fs-5xl: 3.5rem;      /* 56px */

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --max-width: 1200px;
  --header-height: 72px;

  /* Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Shadow */
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,.12);
  --shadow-xl: 0 16px 48px rgba(0,0,0,.14);

  /* Transition */
  --ease: cubic-bezier(.4,0,.2,1);
  --duration: 0.3s;
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--ff-body);font-size:var(--fs-base);line-height:1.6;color:var(--clr-gray-700);background:var(--clr-white);-webkit-font-smoothing:antialiased}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
ul{list-style:none}
button,input,select,textarea{font:inherit;color:inherit;border:none;outline:none;background:none}

/* ---------- Utility ---------- */
.container{width:100%;max-width:var(--max-width);margin:0 auto;padding:0 var(--space-lg)}
.section{padding:var(--space-5xl) 0}
.section--dark{background:var(--clr-dark);color:var(--clr-white)}

.section__header{text-align:center;max-width:680px;margin:0 auto var(--space-3xl)}
.section__subtitle{font-size:var(--fs-sm);font-weight:600;text-transform:uppercase;letter-spacing:0.08em;color:var(--clr-primary);margin-bottom:var(--space-sm)}
.section--dark .section__subtitle{color:var(--clr-accent)}
.section__title{font-size:var(--fs-3xl);font-weight:800;line-height:1.2;color:var(--clr-dark);margin-bottom:var(--space-md)}
.section--dark .section__title{color:var(--clr-white)}
.section__description{font-size:var(--fs-lg);color:var(--clr-gray-500)}
.section--dark .section__description{color:rgba(255,255,255,.65)}

.text-gradient{background:linear-gradient(135deg,var(--clr-primary),var(--clr-accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-sm);font-weight:600;border-radius:var(--radius-sm);transition:all var(--duration) var(--ease);cursor:pointer;white-space:nowrap}
.btn--primary{background:var(--clr-primary);color:var(--clr-white);padding:0.65rem 1.5rem;font-size:var(--fs-sm)}
.btn--primary:hover{background:var(--clr-primary-dark);box-shadow:var(--shadow-md)}
.btn--outline{border:2px solid var(--clr-primary);color:var(--clr-primary);padding:0.65rem 1.5rem;font-size:var(--fs-sm)}
.btn--outline:hover{background:var(--clr-primary);color:var(--clr-white)}
.btn--lg{padding:0.85rem 2rem;font-size:var(--fs-base)}
.btn--full{width:100%}
.btn--success{background:#16a34a !important}

/* ---------- Header ---------- */
.header{position:fixed;top:0;left:0;width:100%;height:var(--header-height);z-index:100;transition:all var(--duration) var(--ease);background:transparent}
.header.scrolled{background:rgba(255,255,255,.95);backdrop-filter:blur(12px);box-shadow:var(--shadow-sm)}
.nav{display:flex;align-items:center;justify-content:space-between;height:var(--header-height)}
.nav__logo{display:flex;align-items:baseline;gap:var(--space-xs)}
.logo-relkor{font-size:var(--fs-xl);font-weight:800;color:var(--clr-primary)}
.logo-cloud{font-size:var(--fs-sm);font-weight:500;color:var(--clr-gray-500)}
.header.scrolled .logo-cloud{color:var(--clr-gray-500)}
.nav__menu{display:flex;gap:var(--space-xl)}
.nav__link{font-size:var(--fs-sm);font-weight:500;color:var(--clr-gray-700);position:relative;padding:var(--space-xs) 0;transition:color var(--duration) var(--ease)}
.nav__link::after{content:'';position:absolute;bottom:-2px;left:0;width:0;height:2px;background:var(--clr-primary);transition:width var(--duration) var(--ease)}
.nav__link:hover,.nav__link.active{color:var(--clr-primary)}
.nav__link.active::after,.nav__link:hover::after{width:100%}
.nav__cta{display:none}
.nav__toggle{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:4px}
.nav__toggle span{display:block;width:24px;height:2px;background:var(--clr-dark);border-radius:2px;transition:all var(--duration) var(--ease)}
.nav__toggle.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav__toggle.active span:nth-child(2){opacity:0}
.nav__toggle.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ---------- Hero ---------- */
.hero{min-height:100vh;display:flex;align-items:center;padding-top:var(--header-height);background:linear-gradient(160deg,var(--clr-white) 60%,#EBF5FF 100%)}
.hero__container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-3xl);align-items:center}
.hero__badge{display:inline-block;font-size:var(--fs-sm);font-weight:600;color:var(--clr-primary);background:rgba(1,118,211,.08);border:1px solid rgba(1,118,211,.15);padding:0.35rem 1rem;border-radius:var(--radius-full);margin-bottom:var(--space-lg)}
.hero__title{font-size:var(--fs-5xl);font-weight:800;line-height:1.1;color:var(--clr-dark);margin-bottom:var(--space-lg)}
.hero__description{font-size:var(--fs-lg);color:var(--clr-gray-500);max-width:540px;margin-bottom:var(--space-xl)}
.hero__actions{display:flex;gap:var(--space-md);flex-wrap:wrap;margin-bottom:var(--space-3xl)}
.hero__stats{display:flex;gap:var(--space-3xl)}
.stat{display:flex;flex-direction:column}
.stat__number{font-size:var(--fs-3xl);font-weight:800;color:var(--clr-primary)}
.stat__label{font-size:var(--fs-sm);color:var(--clr-gray-500)}

/* Hero graphic */
.hero__visual{display:flex;justify-content:center;align-items:center}
.hero__graphic{position:relative;width:420px;height:420px;display:flex;justify-content:center;align-items:center}
.cloud-icon{width:240px;height:160px;animation:float 6s ease-in-out infinite}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-16px)}}
.floating-cards{position:absolute;inset:0}
.float-card{position:absolute;display:flex;align-items:center;gap:var(--space-sm);background:var(--clr-white);padding:0.6rem 1rem;border-radius:var(--radius-md);box-shadow:var(--shadow-lg);font-size:var(--fs-sm);font-weight:600;color:var(--clr-dark)}
.float-card__icon{width:36px;height:36px;border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:var(--clr-white)}
.float-card--1{top:10%;right:0;animation:floatCard 5s ease-in-out 0.5s infinite}
.float-card--1 .float-card__icon{background:linear-gradient(135deg,#0176D3,#1B96FF)}
.float-card--2{bottom:30%;left:0;animation:floatCard 5s ease-in-out 1s infinite}
.float-card--2 .float-card__icon{background:linear-gradient(135deg,#04E1CB,#0D9DDA)}
.float-card--3{bottom:8%;right:10%;animation:floatCard 5s ease-in-out 1.5s infinite}
.float-card--3 .float-card__icon{background:linear-gradient(135deg,#FF5D2D,#FF9E2C)}
@keyframes floatCard{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}

/* ---------- Services ---------- */
.services__grid{display:grid;grid-template-columns:repeat(3,1fr);gap:var(--space-xl)}
.service-card{background:var(--clr-white);border:1px solid var(--clr-gray-100);border-radius:var(--radius-lg);padding:var(--space-xl);transition:all var(--duration) var(--ease)}
.service-card:hover{border-color:var(--clr-primary);box-shadow:var(--shadow-lg);transform:translateY(-4px)}
.service-card__icon{width:56px;height:56px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;margin-bottom:var(--space-lg);color:var(--clr-white)}
.service-card__icon--sales{background:linear-gradient(135deg,#0176D3,#1B96FF)}
.service-card__icon--service{background:linear-gradient(135deg,#FF5D2D,#FF9E2C)}
.service-card__icon--data{background:linear-gradient(135deg,#04E1CB,#0D9DDA)}
.service-card__icon--experience{background:linear-gradient(135deg,#9050E9,#B78DEF)}
.service-card__icon--field{background:linear-gradient(135deg,#16A34A,#4ADE80)}
.service-card__icon--integration{background:linear-gradient(135deg,var(--clr-dark-2),#5B8DEF)}
.service-card__title{font-size:var(--fs-xl);font-weight:700;color:var(--clr-dark);margin-bottom:var(--space-sm)}
.service-card__text{font-size:var(--fs-sm);color:var(--clr-gray-500);margin-bottom:var(--space-lg)}
.service-card__features{display:flex;flex-direction:column;gap:var(--space-sm)}
.service-card__features li{font-size:var(--fs-sm);color:var(--clr-gray-700);padding-left:1.4rem;position:relative}
.service-card__features li::before{content:'';position:absolute;left:0;top:7px;width:8px;height:8px;border-radius:50%;background:var(--clr-primary);opacity:.25}

/* ---------- About ---------- */
.about__container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4xl);align-items:center}
.about__text{font-size:var(--fs-base);color:var(--clr-gray-500);margin-bottom:var(--space-lg)}
.about__highlights{display:flex;flex-direction:column;gap:var(--space-lg);margin-top:var(--space-xl)}
.highlight{display:flex;gap:var(--space-md);align-items:flex-start}
.highlight__icon{width:44px;height:44px;min-width:44px;border-radius:var(--radius-sm);background:rgba(1,118,211,.08);display:flex;align-items:center;justify-content:center;color:var(--clr-primary)}
.highlight strong{display:block;font-size:var(--fs-base);color:var(--clr-dark);margin-bottom:2px}
.highlight p{font-size:var(--fs-sm);color:var(--clr-gray-500);margin:0}

/* About visual */
.about__visual{display:flex;justify-content:center}
.about__image-wrapper{position:relative;width:100%;max-width:460px}
.about__pattern{position:absolute;inset:-20px;border-radius:var(--radius-xl);background:repeating-linear-gradient(45deg,transparent,transparent 10px,rgba(1,118,211,.04) 10px,rgba(1,118,211,.04) 20px)}

/* Credential card */
.about__credential-card{position:relative;width:100%;border-radius:var(--radius-lg);background:linear-gradient(145deg,var(--clr-dark) 0%,var(--clr-dark-2) 100%);padding:var(--space-2xl);display:flex;flex-direction:column;align-items:center;gap:var(--space-xl);overflow:hidden}
.about__credential-card::before{content:'';position:absolute;top:-40%;right:-20%;width:300px;height:300px;background:radial-gradient(circle,rgba(1,118,211,.15) 0%,transparent 70%);pointer-events:none}
.about__credential-card::after{content:'';position:absolute;bottom:-30%;left:-10%;width:250px;height:250px;background:radial-gradient(circle,rgba(4,225,203,.1) 0%,transparent 70%);pointer-events:none}

.credential-card__header{display:flex;flex-direction:column;align-items:center;gap:var(--space-md);position:relative;z-index:1}
.credential-card__cloud{width:80px;height:54px}
.credential-card__badge{font-size:var(--fs-sm);font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--clr-accent);background:rgba(4,225,203,.1);border:1px solid rgba(4,225,203,.2);padding:0.3rem 1rem;border-radius:var(--radius-full)}

.credential-card__stats{display:flex;align-items:center;gap:var(--space-xl);position:relative;z-index:1}
.credential-stat{display:flex;flex-direction:column;align-items:center}
.credential-stat__number{font-size:var(--fs-3xl);font-weight:800;color:var(--clr-white)}
.credential-stat__label{font-size:var(--fs-sm);color:rgba(255,255,255,.55)}
.credential-stat__divider{width:1px;height:48px;background:rgba(255,255,255,.12)}

.credential-card__platforms{display:flex;flex-wrap:wrap;justify-content:center;gap:var(--space-sm);position:relative;z-index:1}
.platform-tag{font-size:0.75rem;font-weight:600;padding:0.3rem 0.75rem;border-radius:var(--radius-full);color:var(--clr-white)}
.platform-tag--sales{background:rgba(1,118,211,.25);border:1px solid rgba(1,118,211,.35)}
.platform-tag--service{background:rgba(255,93,45,.2);border:1px solid rgba(255,93,45,.3)}
.platform-tag--data{background:rgba(4,225,203,.15);border:1px solid rgba(4,225,203,.25)}
.platform-tag--experience{background:rgba(144,80,233,.2);border:1px solid rgba(144,80,233,.3)}
.platform-tag--field{background:rgba(22,163,74,.2);border:1px solid rgba(22,163,74,.3)}
.platform-tag--integration{background:rgba(91,141,239,.2);border:1px solid rgba(91,141,239,.3)}

.credential-card__footer{display:flex;align-items:center;gap:var(--space-sm);font-size:var(--fs-sm);color:rgba(255,255,255,.45);position:relative;z-index:1}

/* ---------- Approach ---------- */
.approach__timeline{max-width:720px;margin:0 auto;position:relative}
.approach__timeline::before{content:'';position:absolute;left:32px;top:0;bottom:0;width:2px;background:rgba(255,255,255,.12)}
.approach__step{display:flex;gap:var(--space-xl);margin-bottom:var(--space-2xl);position:relative}
.approach__step:last-child{margin-bottom:0}
.step__number{width:64px;min-width:64px;height:64px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:var(--fs-xl);font-weight:800;color:var(--clr-white);background:rgba(255,255,255,.06);border:2px solid rgba(255,255,255,.15);position:relative;z-index:1}
.step__content h3{font-size:var(--fs-xl);font-weight:700;margin-bottom:var(--space-sm);color:var(--clr-white)}
.step__content p{font-size:var(--fs-base);color:rgba(255,255,255,.65);line-height:1.7}

/* ---------- CTA Banner ---------- */
.cta-banner{background:linear-gradient(135deg,var(--clr-primary),var(--clr-primary-light))}
.cta-banner__content{text-align:center;max-width:640px;margin:0 auto}
.cta-banner__content h2{font-size:var(--fs-3xl);font-weight:800;color:var(--clr-white);margin-bottom:var(--space-md)}
.cta-banner__content p{font-size:var(--fs-lg);color:rgba(255,255,255,.85);margin-bottom:var(--space-xl)}
.cta-banner .btn--primary{background:var(--clr-white);color:var(--clr-primary)}
.cta-banner .btn--primary:hover{background:var(--clr-gray-100);box-shadow:var(--shadow-lg)}

/* ---------- Contact ---------- */
.contact__container{display:grid;grid-template-columns:1fr 1fr;gap:var(--space-4xl);align-items:start}
.contact__text{font-size:var(--fs-base);color:var(--clr-gray-500);margin-bottom:var(--space-xl)}
.contact__details{display:flex;flex-direction:column;gap:var(--space-lg)}
.contact__item{display:flex;gap:var(--space-md);align-items:flex-start}
.contact__item-icon{width:40px;height:40px;min-width:40px;border-radius:var(--radius-sm);background:rgba(1,118,211,.08);display:flex;align-items:center;justify-content:center;color:var(--clr-primary)}
.contact__item strong{display:block;font-size:var(--fs-sm);color:var(--clr-dark);margin-bottom:2px}
.contact__item a,.contact__item p{font-size:var(--fs-sm);color:var(--clr-gray-500);margin:0}
.contact__item a:hover{color:var(--clr-primary)}

/* Contact form */
.contact__form-wrapper{background:var(--clr-white);border:1px solid var(--clr-gray-100);border-radius:var(--radius-lg);padding:var(--space-2xl);box-shadow:var(--shadow-md)}
.form__group{margin-bottom:var(--space-lg)}
.form__group label{display:block;font-size:var(--fs-sm);font-weight:600;color:var(--clr-dark);margin-bottom:var(--space-sm)}
.form__group input,.form__group select,.form__group textarea{width:100%;padding:0.75rem 1rem;border:1px solid var(--clr-gray-300);border-radius:var(--radius-sm);font-size:var(--fs-base);transition:border var(--duration) var(--ease);background:var(--clr-white)}
.form__group input:focus,.form__group select:focus,.form__group textarea:focus{border-color:var(--clr-primary);box-shadow:0 0 0 3px rgba(1,118,211,.1)}
.form__group textarea{resize:vertical}

/* ---------- Footer ---------- */
.footer{background:var(--clr-dark);color:rgba(255,255,255,.65);padding:var(--space-4xl) 0 var(--space-xl)}
.footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:var(--space-3xl);margin-bottom:var(--space-3xl)}
.footer__tagline{font-size:var(--fs-sm);margin-top:var(--space-md);max-width:300px}
.footer__links h4{font-size:var(--fs-sm);font-weight:700;color:var(--clr-white);margin-bottom:var(--space-md);text-transform:uppercase;letter-spacing:0.06em}
.footer__links li{margin-bottom:var(--space-sm)}
.footer__links a{font-size:var(--fs-sm);transition:color var(--duration) var(--ease)}
.footer__links a:hover{color:var(--clr-white)}
.footer .nav__logo{margin-bottom:var(--space-sm)}
.footer .logo-relkor{color:var(--clr-white)}
.footer .logo-cloud{color:rgba(255,255,255,.5)}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);padding-top:var(--space-xl);text-align:center;font-size:var(--fs-sm)}

/* ---------- Scroll Reveal ---------- */
.reveal{opacity:0;transform:translateY(32px);transition:opacity 0.7s var(--ease),transform 0.7s var(--ease)}
.reveal.revealed{opacity:1;transform:translateY(0)}

/* ---------- Responsive ---------- */
@media(min-width:1024px){
  .nav__cta{display:inline-flex}
}

@media(max-width:1023px){
  .nav__toggle{display:flex}
  .nav__menu{position:fixed;top:var(--header-height);right:-100%;width:280px;height:calc(100vh - var(--header-height));background:var(--clr-white);flex-direction:column;padding:var(--space-xl);box-shadow:var(--shadow-xl);transition:right var(--duration) var(--ease);gap:var(--space-md)}
  .nav__menu.show{right:0}
  .hero__container{grid-template-columns:1fr;text-align:center}
  .hero__title{font-size:var(--fs-4xl)}
  .hero__description{margin-left:auto;margin-right:auto}
  .hero__actions{justify-content:center}
  .hero__stats{justify-content:center}
  .hero__visual{display:none}
  .services__grid{grid-template-columns:1fr 1fr}
  .about__container{grid-template-columns:1fr;text-align:center}
  .about__visual{order:-1}
  .about__highlights{align-items:center}
  .contact__container{grid-template-columns:1fr}
  .footer__grid{grid-template-columns:1fr 1fr}
}

@media(max-width:640px){
  .hero__title{font-size:var(--fs-3xl)}
  .hero__stats{flex-direction:column;gap:var(--space-lg)}
  .services__grid{grid-template-columns:1fr}
  .section__title{font-size:var(--fs-2xl)}
  .footer__grid{grid-template-columns:1fr}
}