/* =========================================
   BASE LAYOUT
========================================= */

.container {
    width: 100%;
    max-width: var(--container-width);

    margin-inline: auto;
    padding-inline: var(--page-padding);
}

.section {
    padding-block: var(--section-padding-y);
}

/* =========================================
   SITE HEADER
========================================= */

.site-header {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgb(255 255 255 / 80%);
    border-bottom: 1px solid rgb(229 231 235 / 60%);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}


/* =========================================
   NAVBAR
========================================= */

.navbar {
    min-height: var(--navbar-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* =========================================
   LOGO
========================================= */

.navbar__logo {
    color: var(--color-text-primary);

    font-size: 1.25rem;
    font-weight: 700;

    text-decoration: none;
}


/* =========================================
   NAVIGATION MENU
========================================= */

.navbar__menu {
    display: flex;
    align-items: center;

    gap: 2rem;
}

.navbar__links {
    display: flex;
    align-items: center;

    gap: 2rem;

    list-style: none;
}

.navbar__links a {
    color: var(--color-text-secondary);

    font-size: 0.95rem;
    font-weight: 500;

    text-decoration: none;

    transition:
        color var(--transition-fast);
}

.navbar__links a:hover {
    color: var(--color-text-primary);
}


/* =========================================
   MOBILE NAVIGATION TOGGLE
========================================= */

.navbar__toggle {
    display: none;

    width: 44px;
    height: 44px;

    padding: 0;

    border: 0;

    background: transparent;

    cursor: pointer;
}

.navbar__toggle span {
    display: block;

    width: 24px;
    height: 2px;

    margin: 5px auto;

    background-color: var(--color-text-primary);

    transition:
        transform var(--transition-fast),
        opacity var(--transition-fast);
}


/* Hamburger → Close */

.navbar__toggle[aria-expanded="true"] span:nth-child(1) {
    transform:
        translateY(7px) rotate(45deg);
}

.navbar__toggle[aria-expanded="true"] span:nth-child(2) {
    opacity: 0;
}

.navbar__toggle[aria-expanded="true"] span:nth-child(3) {
    transform:
        translateY(-7px) rotate(-45deg);
}


/* =========================================
   BUTTON SYSTEM
========================================= */

.button {
    min-height: 48px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    padding-inline: 2rem;

    border: 1px solid transparent;
    border-radius: var(--radius-md);

    font-size: 0.95rem;
    font-weight: 600;

    text-decoration: none;

    cursor: pointer;

    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        color var(--transition-fast),
        transform var(--transition-fast);
}


/* Primary Button */

.button--primary {
    color: #ffffff;

    background-color: var(--color-primary);
}

.button--primary:hover {
    background-color: var(--color-primary-hover);
}

.button--primary:active {
    transform: translateY(1px);
}


/* Secondary Button */

.button--secondary {
    color: var(--color-text-primary);

    background-color: transparent;

    border-color: var(--color-border);
}

.button--secondary:hover {
    background-color: var(--color-surface);
}


/* =========================================
   ACCESSIBILITY
========================================= */

.navbar a:focus-visible,
.navbar button:focus-visible,
.button:focus-visible {
    outline: 3px solid var(--color-primary);

    outline-offset: 4px;
}


/* =========================================
   HERO
========================================= */

.hero {
    min-height: var(--hero-min-height);
    display: flex;
    align-items: center;
    padding-block-start: var(--navbar-height);
}

.hero__container {
    width: 100%;
    display: grid;
    grid-template-columns:
        minmax(0, 1.05fr) minmax(0, 0.95fr);
    align-items: center;
    gap: clamp(3rem, 6vw, 6rem);
}

.hero__content {
    width: 100%;
    max-width: 680px;
}

/* Hero Eyebrow */

.hero__eyebrow {
    margin-block-end: 1.5rem;

    color: var(--color-primary);

    font-size: 0.875rem;
    font-weight: 700;

    letter-spacing: 0.08em;
    text-transform: uppercase;
}


/* Hero Title */

.hero__title {
    max-width: 680px;
    margin-block-end: 1.5rem;
    color: var(--color-text-primary);
    font-size: clamp(2.75rem,
            5vw,
            4.5rem);
    line-height: 1.05;
    letter-spacing: -0.04em;
}


/* Hero Highlight */

.hero__title span {
    display: block;

    color: var(--color-primary);
}


/* Hero Description */

.hero__description {
    max-width: 600px;

    margin-block-end: 2.5rem;

    color: var(--color-text-secondary);

    font-size: 1.125rem;

    line-height: 1.7;
}


/* Hero Actions */

.hero__actions {
    display: flex;
    align-items: center;

    gap: 1rem;
}


/* =========================================
   HERO VISUAL
========================================= */

.hero__visual {
    display: flex;

    justify-content: center;
}


/* =========================================
   BUSINESS WORKFLOW MOCKUP
========================================= */

.hero__mockup {
    width: 100%;
    max-width: 520px;

    overflow: hidden;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    box-shadow: var(--shadow-lg);
}


/* Mockup Header */

.hero__mockup-header {
    padding: 1.25rem 1.5rem;
    color: var(--color-text-primary);
    font-weight: 700;
    border-block-end: 1px solid var(--color-border);
}


/* Mockup Content */

.hero__mockup-content {
    display: grid;
    gap: 1rem;
    padding: 1.5rem;
}


/* Workflow Step */

.workflow-step {
    display: flex;
    align-items: center;

    gap: 1rem;

    padding: 1rem;

    background-color: var(--color-surface);

    border-radius: var(--radius-md);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

.workflow-step:hover {
    transform: translateY(-4px);

    box-shadow: var(--shadow-sm);
}

.workflow-step:hover {
    transform: translateY(-4px);

    box-shadow:
        0 8px 20px rgb(15 23 42 / 8%);
}


/* Workflow Number */

.workflow-step__number {
    color: var(--color-primary);

    font-weight: 700;
}

/* ===================== build bussines problems ===================== */

/* =========================================
   SECTION HEADER
========================================= */

.section-header {
    max-width: 720px;

    margin-bottom: 4rem;
}

.section-eyebrow {
    margin-bottom: 1rem;

    color: var(--color-primary);

    font-size: 0.875rem;
    font-weight: 700;

    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.section-title {
    margin-bottom: 1.5rem;

    color: var(--color-text-primary);

    font-size: clamp(2rem, 4vw, 3.5rem);

    line-height: 1.1;

    letter-spacing: -0.03em;
}

.section-title span {
    display: block;

    color: var(--color-primary);
}

.section-description {
    max-width: 600px;

    color: var(--color-text-secondary);

    font-size: 1.125rem;

    line-height: 1.7;
}

/* =========================================
   BUSINESS PROBLEMS
========================================= */

.problems {
    background-color: var(--color-surface);
}

.problems__grid {
    display: grid;

    grid-template-columns: repeat(3, minmax(0, 1fr));

    gap: 2rem;
}

.problem-card {
    padding: 2rem;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

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

    box-shadow:
        0 16px 40px rgb(15 23 42 / 8%);
}

.problem-card__number {
    margin-bottom: 2rem;

    color: var(--color-primary);

    font-size: 0.875rem;
    font-weight: 700;
}

.problem-card__title {
    margin-bottom: 1rem;

    color: var(--color-text-primary);

    font-size: 1.25rem;

    line-height: 1.3;
}

.problem-card__description {
    color: var(--color-text-secondary);

    line-height: 1.7;
}

.problems__cta {
    margin-top: 3rem;
}

/* ===================== build solution ===================== */

/* =========================================
   SOLUTION
========================================= */

.solution {
    background-color: var(--color-background);
}

.solution__steps {
    display: grid;

    grid-template-columns:
        repeat(5, minmax(0, 1fr));

    gap: 1rem;
}

.solution-step {
    position: relative;

    min-height: 300px;

    display: flex;
    flex-direction: column;

    padding: 2rem;

    background-color: var(--color-surface);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-normal);
}

.solution-step:hover {
    transform: translateY(-6px);

    border-color: var(--color-primary);

    box-shadow:
        0 16px 40px rgb(15 23 42 / 8%);
}


/* =========================================
   STEP NUMBER
========================================= */

.solution-step__number {
    margin-bottom: 3rem;

    color: var(--color-primary);

    font-size: 0.875rem;

    font-weight: 700;

    letter-spacing: 0.08em;
}


/* =========================================
   STEP CONTENT
========================================= */

.solution-step__content {
    margin-top: auto;
}

.solution-step__title {
    margin-bottom: 1rem;

    color: var(--color-text-primary);

    font-size: 1.25rem;

    line-height: 1.3;
}

.solution-step__description {
    color: var(--color-text-secondary);

    font-size: 0.95rem;

    line-height: 1.7;
}


/* =========================================
   CTA
========================================= */

.solution__cta {
    margin-top: 3rem;
}

/* ===================== work process ===================== */

/* =========================================
   WORK PROCESS
========================================= */

.work-process {
    background-color: var(--color-surface);
}

.process__timeline {
    display: grid;

    grid-template-columns:
        repeat(5, minmax(0, 1fr));

    gap: 1rem;
}

.process-step {
    position: relative;

    min-height: 280px;

    display: flex;
    flex-direction: column;

    padding: 2rem;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal);
}

.process-step:hover {
    transform: translateY(-6px);

    box-shadow:
        0 16px 40px rgb(15 23 42 / 8%);
}

.process-step__number {
    margin-bottom: 3rem;

    color: var(--color-primary);

    font-size: 0.875rem;

    font-weight: 700;

    letter-spacing: 0.08em;
}

.process-step__content {
    margin-top: auto;
}

.process-step__title {
    margin-bottom: 1rem;

    color: var(--color-text-primary);

    font-size: 1.25rem;

    line-height: 1.3;
}

.process-step__description {
    color: var(--color-text-secondary);

    font-size: 0.95rem;

    line-height: 1.7;
}

.process__cta {
    margin-top: 3rem;
}

/* ===================== case study ===================== */

/* =========================================
   CASE STUDIES
========================================= */

.case-studies {
    background-color: var(--color-surface);
}

.case-studies__grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 1.5rem;
}


/* =========================================
   CASE STUDY CARD
========================================= */

.case-study-card {
    display: flex;
    flex-direction: column;

    min-height: 420px;

    padding: 2rem;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-normal);
}

.case-study-card:hover {
    transform: translateY(-6px);

    border-color: var(--color-primary);

    box-shadow:
        0 16px 40px rgb(15 23 42 / 8%);
}


/* =========================================
   FEATURED CARD
========================================= */

.case-study-card--featured {
    grid-column: span 2;

    min-height: 360px;
}


/* =========================================
   CARD HEADER
========================================= */

.case-study-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;

    margin-bottom: 2.5rem;
}

.case-study-card__category {
    color: var(--color-primary);

    font-size: 0.8rem;
    font-weight: 700;

    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.case-study-card__number {
    color: var(--color-text-secondary);

    font-size: 0.875rem;
    font-weight: 700;
}


/* =========================================
   CARD CONTENT
========================================= */

.case-study-card__title {
    margin-bottom: 1rem;

    color: var(--color-text-primary);

    font-size: 1.5rem;

    line-height: 1.25;
}

.case-study-card__description {
    max-width: 600px;

    color: var(--color-text-secondary);

    line-height: 1.7;
}


/* =========================================
   PROJECTS
========================================= */

.case-study-card__projects {
    display: flex;
    flex-wrap: wrap;

    gap: 0.5rem;

    margin-top: 2rem;
}

.case-study-card__projects span {
    padding: 0.4rem 0.75rem;

    color: var(--color-text-secondary);

    font-size: 0.8rem;

    background-color: var(--color-surface);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-pill);
}


/* =========================================
   CARD FOOTER
========================================= */

.case-study-card__footer {
    display: flex;
    flex-wrap: wrap;

    gap: 1rem;

    margin-top: auto;
    padding-top: 2rem;

    color: var(--color-text-secondary);

    font-size: 0.8rem;
}

.case-study-card__footer span {
    position: relative;
}

.case-study-card__footer span+span::before {
    content: "•";

    margin-right: 1rem;

    color: var(--color-primary);
}

/* ===================== services ===================== */

/* =========================================
   SERVICES
========================================= */

.services {
    background-color: var(--color-surface);
}

.services__grid {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 1.5rem;
}

.service-card {
    position: relative;

    min-height: 360px;

    display: flex;
    flex-direction: column;

    padding: 2rem;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-6px);

    border-color: var(--color-primary);

    box-shadow:
        0 16px 40px rgb(15 23 42 / 8%);
}

.service-card__number {
    margin-bottom: 2.5rem;

    color: var(--color-primary);

    font-size: 0.875rem;

    font-weight: 700;

    letter-spacing: 0.08em;
}

.service-card__content {
    margin-top: auto;
}

.service-card__title {
    margin-bottom: 1rem;

    color: var(--color-text-primary);

    font-size: 1.5rem;

    line-height: 1.3;
}

.service-card__description {
    max-width: 520px;

    margin-bottom: 1.5rem;

    color: var(--color-text-secondary);

    line-height: 1.7;
}

.service-card__list {
    display: grid;

    gap: 0.75rem;

    padding: 0;

    margin: 0;

    list-style: none;
}

.service-card__list li {
    position: relative;

    padding-left: 1.25rem;

    color: var(--color-text-secondary);

    font-size: 0.95rem;
}

.service-card__list li::before {
    content: "→";

    position: absolute;

    left: 0;

    color: var(--color-primary);

    font-weight: 700;
}

.services__cta {
    display: flex;

    align-items: center;
    justify-content: space-between;

    gap: 2rem;

    margin-top: 4rem;

    padding: 2rem;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);
}

.services__cta-text {
    color: var(--color-text-primary);

    font-size: 1.125rem;

    font-weight: 600;
}

/* ===================== about ===================== */

/* =========================================
   ABOUT
========================================= */

.about {
    background-color: var(--color-background);
}

.about__layout {
    display: grid;

    grid-template-columns:
        minmax(280px, 0.8fr) minmax(0, 1.2fr);

    align-items: center;

    gap: clamp(3rem, 8vw, 8rem);
}

/* =========================================
   ABOUT VISUAL
========================================= */

.about__visual {
    position: relative;

    width: 100%;
    max-width: 420px;

    justify-self: center;
}

.about__image-wrapper {
    position: relative;

    overflow: hidden;

    aspect-ratio: 4 / 5;

    background-color: var(--color-surface);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    box-shadow: var(--shadow-lg);
}

.about__image {
    width: 100%;
    height: 100%;

    display: block;

    object-fit: cover;

    object-position: center top;

    transform: scale(1.03);
}

.about__content {
    max-width: 680px;
}

.about__text {
    display: grid;

    gap: 1.25rem;

    color: var(--color-text-secondary);

    font-size: 1.05rem;

    line-height: 1.8;
}

.about__actions {
    margin-top: 2.5rem;
}

.about__highlights {
    display: grid;

    gap: 1rem;

    margin-top: 6rem;
}

.about-highlight {
    display: grid;

    grid-template-columns: 48px 1fr;

    gap: 1.25rem;

    padding: 1.5rem;

    background-color: var(--color-surface);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    transition:
        transform var(--transition-normal),
        box-shadow var(--transition-normal),
        border-color var(--transition-normal);
}

.about-highlight:hover {
    transform: translateY(-4px);

    border-color: var(--color-primary);

    box-shadow:
        0 12px 32px rgb(15 23 42 / 8%);
}

.about-highlight__number {
    color: var(--color-primary);

    font-size: 0.875rem;

    font-weight: 700;

    letter-spacing: 0.08em;
}

.about-highlight__title {
    margin-bottom: 0.5rem;

    color: var(--color-text-primary);

    font-size: 1.125rem;
}

.about-highlight__description {
    color: var(--color-text-secondary);

    font-size: 0.95rem;

    line-height: 1.7;
}


/* =========================================
   ABOUT STATS
========================================= */

.about__stats {
    display: grid;

    grid-template-columns:
        repeat(4, minmax(0, 1fr));

    gap: 1rem;

    margin-top: 6rem;

    padding-top: 3rem;

    border-top: 1px solid var(--color-border);
}

.about-stat {
    display: flex;

    flex-direction: column;

    gap: 0.5rem;
}

.about-stat__number {
    color: var(--color-primary);

    font-size: 2rem;

    line-height: 1;

    letter-spacing: -0.04em;
}

.about-stat__label {
    color: var(--color-text-secondary);

    font-size: 0.875rem;

    line-height: 1.5;
}

/* ===================== faq ===================== */

/* =========================================
   FAQ
========================================= */

.faq {
    background-color: var(--color-surface);
}

.faq__list {
    max-width: 880px;

    display: grid;

    gap: 1rem;

    margin-inline: auto;
}

.faq-item {
    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);

    overflow: hidden;

    transition:
        border-color var(--transition-normal),
        box-shadow var(--transition-normal);
}

.faq-item[open] {
    border-color: var(--color-primary);

    box-shadow:
        0 12px 32px rgb(15 23 42 / 6%);
}

.faq-item__question {
    position: relative;

    display: flex;

    align-items: center;
    justify-content: space-between;

    gap: 2rem;

    padding: 1.5rem 1.75rem;

    color: var(--color-text-primary);

    font-size: 1.05rem;
    font-weight: 600;

    cursor: pointer;

    list-style: none;
}

/* Remove default marker */

.faq-item__question::-webkit-details-marker {
    display: none;
}


/* Custom icon */

.faq-item__question::after {
    content: "+";

    flex-shrink: 0;

    color: var(--color-primary);

    font-size: 1.5rem;
    font-weight: 400;

    transition:
        transform var(--transition-fast);
}

.faq-item[open] .faq-item__question::after {
    content: "−";
}


/* Answer */

.faq-item__answer {
    padding:

        0 1.75rem 1.5rem;
}

.faq-item__answer p {
    max-width: 720px;

    color: var(--color-text-secondary);

    line-height: 1.7;
}


/* =========================================
   FAQ CTA
========================================= */

.faq__cta {
    max-width: 880px;

    display: flex;

    align-items: center;
    justify-content: space-between;

    gap: 2rem;

    margin: 4rem auto 0;

    padding: 2rem;

    background-color: var(--color-background);

    border: 1px solid var(--color-border);

    border-radius: var(--radius-lg);
}

.faq__cta-text {
    color: var(--color-text-primary);

    font-size: 1.125rem;
    font-weight: 600;
}

/* ===================== final cta ===================== */

/* =========================================
   FINAL CTA
========================================= */

.final-cta {
    background-color: var(--color-primary);
}

.final-cta__content {
    max-width: 800px;

    margin-inline: auto;

    text-align: center;
}

.final-cta .section-eyebrow {
    color: rgb(255 255 255 / 75%);
}

.final-cta__title {
    margin-bottom: 1.5rem;

    color: #ffffff;

    font-size: clamp(2.5rem, 5vw, 4.5rem);

    line-height: 1.05;

    letter-spacing: -0.04em;
}

.final-cta__title span {
    display: block;

    color: #ffffff;
}

.final-cta__description {
    max-width: 640px;

    margin-inline: auto;
    margin-bottom: 2.5rem;

    color: rgb(255 255 255 / 80%);

    font-size: 1.125rem;

    line-height: 1.7;
}

.final-cta__actions {
    display: flex;

    justify-content: center;
    align-items: center;

    gap: 1rem;
}

.final-cta .button--primary {
    color: var(--color-primary);

    background-color: #ffffff;
}

.final-cta .button--primary:hover {
    background-color: var(--color-surface);
}

.final-cta .button--secondary {
    color: #ffffff;

    border-color: rgb(255 255 255 / 40%);
}

.final-cta .button--secondary:hover {
    background-color: rgb(255 255 255 / 10%);
}

/* ===================== footer ===================== */

/* =========================================
   SITE FOOTER
========================================= */

.site-footer {
    padding-block: 5rem 2rem;

    background-color: var(--color-text-primary);

    color: #ffffff;
}


/* =========================================
   FOOTER MAIN
========================================= */

.site-footer__main {
    display: grid;

    grid-template-columns:
        minmax(0, 1.5fr) minmax(0, 1fr);

    gap: 4rem;

    padding-bottom: 4rem;
}


/* =========================================
   FOOTER BRAND
========================================= */

.site-footer__brand {
    max-width: 420px;
}

.site-footer__logo {
    display: inline-block;

    margin-bottom: 1.25rem;

    color: #ffffff;

    font-size: 1.5rem;
    font-weight: 700;

    text-decoration: none;
}

.site-footer__description {
    color: rgb(255 255 255 / 65%);

    line-height: 1.7;
}


/* =========================================
   FOOTER NAVIGATION
========================================= */

.site-footer__navigation {
    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: 3rem;
}

.site-footer__title {
    margin-bottom: 1.25rem;

    color: #ffffff;

    font-size: 0.875rem;
    font-weight: 700;

    letter-spacing: 0.08em;

    text-transform: uppercase;
}

.site-footer__links {
    display: grid;

    gap: 0.75rem;

    margin: 0;
    padding: 0;

    list-style: none;
}

.site-footer__links a {
    color: rgb(255 255 255 / 65%);

    text-decoration: none;

    transition:
        color var(--transition-fast);
}

.site-footer__links a:hover {
    color: #ffffff;
}


/* =========================================
   FOOTER BOTTOM
========================================= */

.site-footer__bottom {
    display: flex;

    align-items: center;
    justify-content: space-between;

    gap: 1rem;

    padding-top: 2rem;

    border-top: 1px solid rgb(255 255 255 / 12%);
}

.site-footer__copyright,
.site-footer__availability {
    color: rgb(255 255 255 / 50%);

    font-size: 0.875rem;
}