/* ============================================
   CSS Variables - iTechNext "Pro Light" Design
   ============================================ */
:root {
    --accent: #2563eb;
    --accent-hover: #1e4fc4;
    --accent-soft: rgba(37, 99, 235, 0.06);
    --accent-border: rgba(37, 99, 235, 0.25);

    --bg: #fbfcfe;
    --bg-alt: #f2f5f9;
    --text: #101828;
    --text-muted: #556178;
    --text-faint: #8a94a8;
    --border: rgba(16, 24, 40, 0.1);

    --font-primary: 'Instrument Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

    --container-max-width: 1160px;
    --header-height: 68px;

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 14px;
    --radius-full: 100px;

    --transition-base: 200ms ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: var(--font-primary);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text);
}

p {
    color: var(--text-muted);
}

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

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

::selection {
    background: rgba(37, 99, 235, 0.15);
}

.section {
    padding: 96px 24px;
    max-width: var(--container-max-width);
    margin: 0 auto;
}

.section__eyebrow {
    margin: 0 0 12px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

.section__heading {
    font-size: 38px;
    line-height: 1.15;
    margin: 0;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
    background: rgba(251, 252, 254, 0.88);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
}

.nav__logo {
    color: var(--text);
    font-weight: 700;
    font-size: 19px;
    letter-spacing: -0.02em;
}

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

.nav__menu {
    display: flex;
    align-items: center;
    gap: 34px;
    font-size: 14.5px;
}

.nav__link {
    color: var(--text-muted);
    font-weight: 500;
}

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

.nav__link--cta {
    color: #ffffff;
    background: var(--text);
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav__link--cta:hover {
    background: #1c2942;
    color: #ffffff;
}

.nav__toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    z-index: 51;
}

.nav__toggle span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: var(--radius-full);
    transition: var(--transition-base);
}

/* ============================================
   Hero
   ============================================ */
.hero {
    position: relative;
    overflow: hidden;
}

.hero__glow {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 900px 500px at 70% -10%, rgba(37, 99, 235, 0.07), transparent);
    pointer-events: none;
}

.hero__container {
    position: relative;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 96px 24px 80px;
}

.hero__badge {
    display: inline-block;
    margin: 0 0 22px;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--accent);
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-full);
    padding: 7px 16px;
    background: var(--accent-soft);
}

.hero__title {
    margin: 0 0 24px;
    font-size: 44px;
    line-height: 1.1;
    font-weight: 700;
    max-width: 800px;
}

.hero__subtitle {
    margin: 0 0 36px;
    font-size: 18px;
    line-height: 1.6;
    color: var(--text-muted);
    max-width: 580px;
}

.hero__cta {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 15px 30px;
    font-size: 15.5px;
    font-weight: 600;
    border-radius: var(--radius-sm);
    border: none;
    cursor: pointer;
    transition: var(--transition-base);
}

.btn--primary {
    background: var(--accent);
    color: #ffffff;
}

.btn--primary:hover {
    background: var(--accent-hover);
    color: #ffffff;
}

.btn--secondary {
    border: 1px solid rgba(16, 24, 40, 0.22);
    color: var(--text);
    font-weight: 500;
    background: transparent;
}

.btn--secondary:hover {
    border-color: rgba(16, 24, 40, 0.5);
    color: var(--text);
}

/* ============================================
   About Section
   ============================================ */
.about {
    border-top: 1px solid var(--border);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
}

.about__pillars {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.pillar {
    background: rgba(16, 24, 40, 0.02);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 26px;
}

.pillar__title {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 600;
}

.pillar__text {
    margin: 0;
    font-size: 14.5px;
    line-height: 1.65;
}

/* ============================================
   Team Section
   ============================================ */
.team {
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    max-width: 100%;
    padding: 0;
}

.team > .section__eyebrow,
.team__header,
.team__grid {
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
}

.team > .section__eyebrow {
    padding: 96px 24px 0;
}

.team__header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    padding: 0 24px 52px;
}

.team__subtitle {
    margin: 0;
    font-size: 15px;
    max-width: 400px;
}

.team__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    padding: 0 24px 96px;
}

.agent-card {
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 26px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    transition: border-color var(--transition-base);
}

.agent-card:hover {
    border-color: var(--accent-border);
}

.agent-card__name {
    margin: 0;
    font-size: 18px;
    font-weight: 600;
}

.agent-card__role {
    margin: 4px 0 0;
    font-size: 13px;
    font-weight: 500;
    color: var(--accent);
}

.agent-card__bio {
    margin: 0;
    font-size: 14px;
    line-height: 1.6;
}

/* ============================================
   Services Section
   ============================================ */
.services {
    border-top: 1px solid var(--border);
}

.services .section__heading {
    margin-bottom: 52px;
}

.flagship__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.flagship-card {
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    background: linear-gradient(170deg, var(--accent-soft), transparent);
}

.flagship-card__tag {
    margin: 0 0 14px;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--accent);
}

.flagship-card__title {
    margin: 0 0 10px;
    font-size: 21px;
    font-weight: 600;
}

.flagship-card__text {
    margin: 0 0 20px;
    font-size: 14.5px;
    line-height: 1.65;
}

.flagship-card__list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.flagship-card__list li {
    display: flex;
    align-items: center;
    gap: 9px;
    font-size: 13.5px;
    color: #3a4557;
}

.flagship-card__list li::before {
    content: '';
    width: 5px;
    height: 5px;
    border-radius: 50%;
    background: var(--accent);
    flex-shrink: 0;
}

.services__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.service-card {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 24px;
    background: rgba(16, 24, 40, 0.015);
}

.service-card__title {
    margin: 0 0 8px;
    font-size: 16px;
    font-weight: 600;
}

.service-card__text {
    margin: 0;
    font-size: 13.5px;
    line-height: 1.6;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    border-top: 1px solid var(--border);
    background: var(--bg-alt);
    max-width: 100%;
    padding: 0;
}

.contact .contact__grid {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 96px 24px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 48px;
}

.contact__heading {
    margin: 0 0 18px;
    font-size: 34px;
    line-height: 1.1;
}

.contact__text {
    margin: 0 0 30px;
    font-size: 16px;
    line-height: 1.65;
    max-width: 460px;
}

.contact__card {
    border-left: 1px solid rgba(16, 24, 40, 0.14);
    padding-left: 32px;
    font-size: 14.5px;
    line-height: 1.75;
}

.contact__card-label {
    margin: 0 0 6px;
    font-weight: 600;
    color: var(--text);
}

.contact__card-text {
    margin: 0 0 24px;
    color: var(--text-muted);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    border-top: 1px solid var(--border);
    padding: 28px 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    color: var(--text-faint);
    max-width: var(--container-max-width);
    margin: 0 auto;
    text-align: center;
}

.footer__flag {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ============================================
   Scroll to Top Button
   ============================================ */
.scroll-top {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    background: var(--text);
    color: #ffffff;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(16, 24, 40, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
    z-index: 40;
}

.scroll-top.visible {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background: var(--accent-hover);
}

.scroll-top svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (min-width: 640px) {
    .footer {
        flex-direction: row;
        text-align: left;
    }
}

@media (min-width: 768px) {
    .hero__container {
        padding: 130px 56px 110px;
    }

    .hero__title {
        font-size: 64px;
    }

    .hero__subtitle {
        font-size: 19px;
    }

    .section {
        padding: 96px 56px;
    }

    .team,
    .contact {
        padding: 0;
    }

    .section__heading {
        font-size: 38px;
    }

    .about__grid {
        grid-template-columns: 340px 1fr;
        align-items: start;
    }

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

    .team > .section__eyebrow {
        padding: 96px 56px 0;
    }

    .team__header {
        padding: 0 56px 52px;
    }

    .team__grid {
        grid-template-columns: repeat(2, 1fr);
        padding: 0 56px 96px;
    }

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

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

    .contact .contact__grid {
        grid-template-columns: 1.2fr 1fr;
        padding: 104px 56px;
    }

    .contact__heading {
        font-size: 44px;
    }

    .footer {
        padding: 28px 56px;
    }
}

@media (min-width: 1024px) {
    .team__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

@media (max-width: 767px) {
    .nav__menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        background: var(--bg);
        flex-direction: column;
        align-items: flex-start;
        padding: 24px;
        gap: 20px;
        border-bottom: 1px solid var(--border);
        transform: translateY(-150%);
        opacity: 0;
        transition: transform var(--transition-base), opacity var(--transition-base);
    }

    .nav__menu.active {
        transform: translateY(0);
        opacity: 1;
    }

    .nav__toggle {
        display: flex;
    }

    .nav__toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .nav__toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav__toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .hero__title {
        font-size: 34px;
    }

    .section__heading {
        font-size: 30px;
    }

    .contact__heading {
        font-size: 28px;
    }

    .contact__card {
        border-left: none;
        border-top: 1px solid rgba(16, 24, 40, 0.14);
        padding-left: 0;
        padding-top: 32px;
    }
}