/* ===========================
   1. CSS Custom Properties
   =========================== */
:root {
    /* Primary Colors */
    --color-navy: #0A1628;
    --color-dark-blue: #152238;
    --color-blue: #1B3A5C;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-off-white: #F4F6F8;
    --color-light-gray: #E2E8F0;
    --color-medium-gray: #64748B;
    --color-dark-text: #1E293B;

    /* Accent Colors */
    --color-accent: #3B82F6;
    --color-accent-hover: #2563EB;
    --color-gold: #D4A843;
    --color-gold-light: rgba(212, 168, 67, 0.15);

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', 'Courier New', monospace;

    --font-hero-title: clamp(2.5rem, 5vw, 4.5rem);
    --font-section-title: clamp(1.75rem, 3vw, 2.5rem);
    --font-subtitle: clamp(1.125rem, 2vw, 1.5rem);
    --font-body: 1rem;
    --font-small: 0.875rem;

    /* Spacing */
    --section-padding: clamp(4rem, 8vw, 7rem);
    --container-max: 1200px;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===========================
   2. Reset & Base Styles
   =========================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-main);
    font-size: var(--font-body);
    line-height: 1.6;
    color: var(--color-dark-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: var(--color-accent-hover);
}

ul {
    list-style: none;
}

h1, h2, h3, h4 {
    line-height: 1.25;
    font-weight: 700;
}

/* ===========================
   3. Utility Classes
   =========================== */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--section-padding) 0;
}

.section--dark {
    background-color: var(--color-navy);
    color: var(--color-white);
}

.section__title {
    font-size: var(--font-section-title);
    text-align: center;
    margin-bottom: 3rem;
    position: relative;
}

.section__title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, var(--color-gold), var(--color-accent));
    margin: 0.75rem auto 0;
    border-radius: 2px;
}

/* ===========================
   4. Buttons
   =========================== */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: var(--font-body);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-align: center;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
}

.btn--nav {
    padding: 0.5rem 1.25rem;
    background: var(--color-accent);
    color: var(--color-white) !important;
    border-radius: 6px;
    font-size: var(--font-small);
}

.btn--nav:hover {
    background: var(--color-accent-hover);
    color: var(--color-white) !important;
}

/* ===========================
   5. Navigation
   =========================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: all var(--transition-normal);
}

.header--scrolled {
    background: rgba(10, 22, 40, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 0.5rem 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: 0;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: 3px;
    color: var(--color-white);
    text-decoration: none;
}

.nav__logo:hover {
    color: var(--color-white);
}

.nav__logo-j {
    color: var(--color-white);
}

.nav__logo-divider {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: var(--color-accent);
    margin: 0 0.35rem;
    vertical-align: middle;
}

.nav__logo-trend {
    color: var(--color-white);
}

.nav__menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav__link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    font-size: var(--font-small);
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link:hover {
    color: var(--color-white);
}

.nav__link:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: width var(--transition-normal);
}

.nav__link:not(.btn):hover::after {
    width: 100%;
}

/* Hamburger */
.nav__toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition-normal);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    top: 7px;
}

.nav__toggle--active .hamburger {
    background: transparent;
}

.nav__toggle--active .hamburger::before {
    top: 0;
    transform: rotate(45deg);
}

.nav__toggle--active .hamburger::after {
    top: 0;
    transform: rotate(-45deg);
}

/* ===========================
   6. Hero Section
   =========================== */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--color-navy) 0%, #0f2744 40%, #132d4a 70%, var(--color-dark-blue) 100%);
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(ellipse at 30% 50%, rgba(59, 130, 246, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 70% 50%, rgba(212, 168, 67, 0.05) 0%, transparent 50%);
    animation: heroGlow 12s ease-in-out infinite alternate;
}

@keyframes heroGlow {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(2%, -2%) scale(1.05); }
}

/* Scanline overlay */
.hero__scanlines {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: repeating-linear-gradient(
        0deg,
        transparent,
        transparent 2px,
        rgba(255, 255, 255, 0.015) 2px,
        rgba(255, 255, 255, 0.015) 4px
    );
    pointer-events: none;
    z-index: 1;
}

.hero__content {
    position: relative;
    z-index: 2;
    text-align: center;
    padding: 2rem 1.5rem;
}

.hero__label {
    font-family: var(--font-mono);
    font-size: var(--font-small);
    color: var(--color-gold);
    letter-spacing: 3px;
    text-transform: uppercase;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.2s;
}

.hero__title {
    font-family: var(--font-mono);
    font-size: var(--font-hero-title);
    font-weight: 500;
    color: var(--color-white);
    line-height: 1.15;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.4s;
}

.hero__tagline {
    font-size: var(--font-subtitle);
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto 2.5rem;
    line-height: 1.6;
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.6s;
}

.hero .btn {
    opacity: 0;
    animation: fadeInUp 0.8s ease forwards 0.8s;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===========================
   7. About Section
   =========================== */
.about {
    background-color: var(--color-off-white);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.about__block {
    background: var(--color-white);
    padding: 2.5rem;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

.about__heading {
    font-size: 1.25rem;
    color: var(--color-navy);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.about__heading i {
    color: var(--color-accent);
    font-size: 1.1rem;
}

.about__block p {
    color: var(--color-medium-gray);
    line-height: 1.8;
}

.values__title {
    font-size: 1.5rem;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--color-navy);
}

.values__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.value-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.value-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.value-card__icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1), rgba(212, 168, 67, 0.1));
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.25rem;
    color: var(--color-accent);
}

.value-card__title {
    font-size: 1.1rem;
    color: var(--color-navy);
    margin-bottom: 0.5rem;
}

.value-card__text {
    font-size: var(--font-small);
    color: var(--color-medium-gray);
    line-height: 1.7;
}

/* ===========================
   8. Services Section
   =========================== */
.services__pillar {
    margin-bottom: 4rem;
}

.services__pillar:last-child {
    margin-bottom: 0;
}

.pillar__header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.pillar__label {
    font-family: var(--font-mono);
    font-size: var(--font-small);
    letter-spacing: 2px;
    text-transform: uppercase;
    display: inline-block;
    margin-bottom: 0.75rem;
}

.pillar__label--mainframe {
    color: var(--color-gold);
}

.pillar__label--ai {
    color: var(--color-accent);
}

.pillar__title {
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    color: var(--color-white);
    margin-bottom: 1rem;
}

.pillar__intro {
    color: rgba(255, 255, 255, 0.7);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

/* Mainframe Cards */
.service-card {
    padding: 2rem;
    border-radius: 12px;
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-4px);
}

.service-card--mainframe {
    background: var(--color-dark-blue);
    border-left: 3px solid var(--color-gold);
}

.service-card--mainframe:hover {
    box-shadow: 0 8px 25px rgba(212, 168, 67, 0.15);
}

.service-card--mainframe .service-card__icon {
    color: var(--color-gold);
}

/* AI Cards */
.service-card--ai {
    background: var(--color-dark-blue);
    border-left: 3px solid var(--color-accent);
}

.service-card--ai:hover {
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.15);
}

.service-card--ai .service-card__icon {
    color: var(--color-accent);
}

.service-card__icon {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-card__title {
    font-size: 1.1rem;
    color: var(--color-white);
    margin-bottom: 0.75rem;
}

.service-card__text {
    font-size: var(--font-small);
    color: rgba(255, 255, 255, 0.65);
    line-height: 1.7;
}

/* ===========================
   9. Why Us Section
   =========================== */
.why-us {
    background-color: var(--color-off-white);
}

.why-us__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.why-card {
    background: var(--color-white);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.why-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.why-card__icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: var(--color-navy);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.25rem;
    font-size: 1.35rem;
    color: var(--color-accent);
}

.why-card__title {
    font-size: 1.15rem;
    color: var(--color-navy);
    margin-bottom: 0.75rem;
}

.why-card__text {
    font-size: var(--font-small);
    color: var(--color-medium-gray);
    line-height: 1.7;
}

/* ===========================
   10. Contact Section
   =========================== */
.contact__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

.contact__heading {
    font-size: 1.5rem;
    color: var(--color-white);
    margin-bottom: 1rem;
}

.contact__text {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.7;
    margin-bottom: 2rem;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact__item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact__item i {
    color: var(--color-accent);
    font-size: 1.1rem;
    margin-top: 0.25rem;
    width: 20px;
    text-align: center;
}

.contact__item div {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.contact__item strong {
    color: var(--color-white);
    display: block;
    margin-bottom: 0.15rem;
}

.contact__item a {
    color: var(--color-accent);
}

.contact__item a:hover {
    color: var(--color-white);
}

/* ===========================
   11. Footer
   =========================== */
.footer {
    background: #060d18;
    color: rgba(255, 255, 255, 0.6);
    padding: 4rem 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer__tagline {
    font-family: var(--font-mono);
    font-size: var(--font-small);
    color: var(--color-gold);
    margin-top: 0.75rem;
}

.footer h4 {
    color: var(--color-white);
    font-size: 1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer ul li {
    margin-bottom: 0.5rem;
}

.footer ul li a {
    color: rgba(255, 255, 255, 0.6);
    font-size: var(--font-small);
    transition: color var(--transition-fast);
}

.footer ul li a:hover {
    color: var(--color-accent);
}

.footer__contact p {
    font-size: var(--font-small);
    line-height: 1.7;
    margin-bottom: 0.5rem;
}

.footer__contact a {
    color: rgba(255, 255, 255, 0.6);
}

.footer__contact a:hover {
    color: var(--color-accent);
}

.footer__bottom {
    padding: 1.5rem 0;
    text-align: center;
    font-size: var(--font-small);
}

/* ===========================
   12. Scroll Animations
   =========================== */
[data-animate] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Staggered animation for grid items */
.values__grid [data-animate]:nth-child(2) { transition-delay: 0.1s; }
.values__grid [data-animate]:nth-child(3) { transition-delay: 0.2s; }
.values__grid [data-animate]:nth-child(4) { transition-delay: 0.3s; }

.services__grid [data-animate]:nth-child(2) { transition-delay: 0.1s; }
.services__grid [data-animate]:nth-child(3) { transition-delay: 0.2s; }
.services__grid [data-animate]:nth-child(4) { transition-delay: 0.3s; }
.services__grid [data-animate]:nth-child(5) { transition-delay: 0.4s; }

.why-us__grid [data-animate]:nth-child(2) { transition-delay: 0.1s; }
.why-us__grid [data-animate]:nth-child(3) { transition-delay: 0.2s; }
.why-us__grid [data-animate]:nth-child(4) { transition-delay: 0.3s; }

/* ===========================
   13. Media Queries
   =========================== */

/* Tablet */
@media (min-width: 768px) {
    .about__grid {
        grid-template-columns: 1fr 1fr;
    }

    .values__grid {
        grid-template-columns: 1fr 1fr;
    }

    .services__grid {
        grid-template-columns: 1fr 1fr;
    }

    .why-us__grid {
        grid-template-columns: 1fr 1fr;
    }

    .contact__grid {
        grid-template-columns: 1fr 1fr;
        align-items: start;
    }

    .footer__grid {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

/* Desktop */
@media (min-width: 1024px) {
    .services__grid--mainframe {
        grid-template-columns: repeat(3, 1fr);
    }

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

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

/* Mobile */
@media (max-width: 767px) {
    .nav__toggle {
        display: block;
    }

    .nav__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: var(--color-navy);
        flex-direction: column;
        align-items: flex-start;
        padding: 5rem 2rem 2rem;
        gap: 1.5rem;
        transition: right var(--transition-normal);
        box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    }

    .nav__menu--open {
        right: 0;
    }

    .nav__link {
        font-size: 1rem;
    }

    .btn--nav {
        margin-top: 1rem;
    }

    .hero__content {
        padding: 6rem 1rem 2rem;
    }
}