/* ============================================================
   DigitalServe — Main Stylesheet
   ============================================================ */

/* ---------- Reset & Custom Properties ---------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Brand colours */
    --clr-primary:       #2563eb;   /* blue */
    --clr-primary-dark:  #1d4ed8;
    --clr-primary-light: #eff6ff;
    --clr-accent:        #f59e0b;   /* amber – matches pencil */

    /* Neutrals */
    --clr-dark:   #0f172a;
    --clr-body:   #334155;
    --clr-muted:  #64748b;
    --clr-border: #e2e8f0;
    --clr-bg:     #f8fafc;
    --clr-white:  #ffffff;

    /* Typography */
    --font-base: 'Inter', system-ui, -apple-system, sans-serif;
    --text-xs:   0.75rem;
    --text-sm:   0.875rem;
    --text-base: 1rem;
    --text-lg:   1.125rem;
    --text-xl:   1.25rem;
    --text-2xl:  1.5rem;
    --text-3xl:  1.875rem;
    --text-4xl:  2.25rem;
    --text-5xl:  3rem;

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

    /* Misc */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.25rem;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
    --shadow-md: 0 4px 16px rgba(0,0,0,.08);
    --shadow-lg: 0 10px 40px rgba(0,0,0,.10);
    --transition: 200ms ease;

    --container-max: 1200px;
    --container-pad: clamp(1rem, 5vw, 2.5rem);
}

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

body {
    font-family: var(--font-base);
    font-size: var(--text-base);
    color: var(--clr-body);
    background: var(--clr-white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--clr-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover { color: var(--clr-primary-dark); }

ul { list-style: none; }

/* ---------- Utility ---------- */
.container {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

.section {
    padding-block: var(--space-2xl);
}

.section__eyebrow {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--clr-primary);
    margin-bottom: var(--space-xs);
}

.section__title {
    font-size: clamp(var(--text-2xl), 4vw, var(--text-4xl));
    font-weight: 700;
    color: var(--clr-dark);
    line-height: 1.2;
    margin-bottom: var(--space-sm);
}

.section__sub {
    font-size: var(--text-lg);
    color: var(--clr-muted);
    max-width: 60ch;
}

.section__header {
    margin-bottom: var(--space-xl);
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    border-radius: var(--radius-sm);
    font-family: var(--font-base);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition), box-shadow var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn:focus-visible {
    outline: 3px solid var(--clr-primary);
    outline-offset: 3px;
}

.btn--primary {
    background: var(--clr-primary);
    color: var(--clr-white);
    border-color: var(--clr-primary);
}

.btn--primary:hover {
    background: var(--clr-primary-dark);
    border-color: var(--clr-primary-dark);
    color: var(--clr-white);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, .3);
}

.btn--ghost {
    background: transparent;
    color: var(--clr-dark);
    border-color: var(--clr-border);
}

.btn--ghost:hover {
    border-color: var(--clr-primary);
    color: var(--clr-primary);
    transform: translateY(-1px);
}

.btn--full { width: 100%; }

/* ============================================================
   HEADER / NAV
   ============================================================ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--clr-border);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    gap: var(--space-lg);
}

.nav__logo img {
    height: 44px;
    width: auto;
}

.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.nav__link {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--clr-body);
    padding: 0.25rem 0;
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    left: 0; bottom: -2px;
    width: 0; height: 2px;
    background: var(--clr-primary);
    transition: width var(--transition);
}

.nav__link:hover { color: var(--clr-dark); }
.nav__link:hover::after { width: 100%; }

.nav__link--cta {
    background: var(--clr-primary);
    color: var(--clr-white) !important;
    padding: 0.5rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.nav__link--cta::after { display: none; }

.nav__link--cta:hover {
    background: var(--clr-primary-dark);
    color: var(--clr-white) !important;
}

/* Hamburger */
.nav__toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 6px;
    border-radius: var(--radius-sm);
}

.nav__toggle span {
    display: block;
    height: 2px;
    background: var(--clr-dark);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================================
   HERO
   ============================================================ */
.hero {
    background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 60%);
    padding-block: clamp(4rem, 10vw, 7rem);
    overflow: hidden;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.hero__eyebrow {
    display: inline-block;
    font-size: var(--text-sm);
    font-weight: 600;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--clr-primary);
    margin-bottom: var(--space-sm);
}

.hero__title {
    font-size: clamp(var(--text-3xl), 5vw, var(--text-5xl));
    font-weight: 800;
    color: var(--clr-dark);
    line-height: 1.15;
    margin-bottom: var(--space-md);
    letter-spacing: -.02em;
}

.hero__sub {
    font-size: var(--text-lg);
    color: var(--clr-muted);
    max-width: 48ch;
    margin-bottom: var(--space-lg);
    line-height: 1.65;
}

.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

/* Hero floating cards */
.hero__graphic {
    position: relative;
    height: 340px;
}

.hero__card {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-md);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-md);
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--clr-dark);
    white-space: nowrap;
    animation: float 5s ease-in-out infinite;
}

.hero__card svg { color: var(--clr-primary); flex-shrink: 0; }

.hero__card--1 { top: 10%; left: 5%; animation-delay: 0s; }
.hero__card--2 { top: 45%; right: 0%; animation-delay: 1.6s; }
.hero__card--3 { bottom: 8%; left: 15%; animation-delay: 3.2s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(-10px); }
}

/* ============================================================
   SERVICES
   ============================================================ */
.services {
    background: var(--clr-bg);
}

.services__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.service-card {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--clr-primary);
}

.service-card__icon {
    width: 56px;
    height: 56px;
    background: var(--clr-primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
    color: var(--clr-primary);
}

.service-card__title {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--clr-dark);
    margin-bottom: var(--space-xs);
}

.service-card__body {
    color: var(--clr-muted);
    line-height: 1.65;
    font-size: var(--text-sm);
}

/* CTA card variant */
.service-card--cta {
    background: linear-gradient(135deg, var(--clr-primary) 0%, #1d4ed8 100%);
    border-color: transparent;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.service-card--cta:hover {
    border-color: transparent;
    transform: translateY(-4px);
}

.service-card--cta .service-card__title,
.service-card--cta .service-card__body { color: rgba(255,255,255,.9); }

.service-card--cta .service-card__title { color: var(--clr-white); }

.service-card--cta .btn--primary {
    background: var(--clr-white);
    color: var(--clr-primary);
    border-color: var(--clr-white);
    margin-top: auto;
    align-self: flex-start;
}

.service-card--cta .btn--primary:hover {
    background: var(--clr-primary-light);
    color: var(--clr-primary-dark);
    box-shadow: none;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
    background: var(--clr-white);
}

.about__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: clamp(2rem, 6vw, 5rem);
    align-items: start;
}

.about__content .section__title { margin-bottom: var(--space-md); }

.about__content p {
    color: var(--clr-body);
    margin-bottom: var(--space-md);
    line-height: 1.75;
}

.about__content .btn { margin-top: var(--space-xs); }

/* Stats */
.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    align-content: start;
}

.stat {
    background: var(--clr-bg);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.stat__number {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
    font-weight: 800;
    color: var(--clr-primary);
    line-height: 1;
    letter-spacing: -.02em;
}

.stat__symbol {
    font-size: var(--text-2xl);
}

.stat__label {
    font-size: var(--text-sm);
    color: var(--clr-muted);
    font-weight: 500;
    line-height: 1.4;
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact {
    background: var(--clr-bg);
}

.contact__inner {
    display: grid;
    grid-template-columns: 1fr 1.4fr;
    gap: clamp(2rem, 6vw, 5rem);
    align-items: start;
}

.contact__info .section__title { margin-bottom: var(--space-md); }

.contact__info p {
    color: var(--clr-muted);
    margin-bottom: var(--space-lg);
    line-height: 1.75;
}

.contact__details {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.contact__details li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 500;
    color: var(--clr-body);
}

.contact__details svg {
    color: var(--clr-primary);
    flex-shrink: 0;
}

.contact__details a { color: var(--clr-body); }
.contact__details a:hover { color: var(--clr-primary); }

/* Form */
.contact__form-wrap {
    background: var(--clr-white);
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    padding: clamp(1.5rem, 4vw, 2.5rem);
    box-shadow: var(--shadow-sm);
}

.form__honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    width: 0;
    pointer-events: none;
}

.form__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
    margin-bottom: var(--space-sm);
}

.form__label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--clr-dark);
}

.form__label span { color: var(--clr-primary); }

.form__input {
    font-family: var(--font-base);
    font-size: var(--text-base);
    color: var(--clr-dark);
    background: var(--clr-bg);
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius-sm);
    padding: 0.625rem 0.875rem;
    width: 100%;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: none;
    -webkit-appearance: none;
}

.form__input::placeholder { color: var(--clr-muted); }

.form__input:focus {
    outline: none;
    border-color: var(--clr-primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, .12);
    background: var(--clr-white);
}

.form__input:invalid:not(:placeholder-shown) {
    border-color: #ef4444;
}

.form__select {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form__textarea {
    resize: vertical;
    min-height: 130px;
}

/* Alerts */
.alert {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 1.25rem;
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: var(--text-sm);
    margin-bottom: var(--space-md);
}

.alert--success {
    background: #f0fdf4;
    color: #16a34a;
    border: 1px solid #bbf7d0;
}

.alert--error {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
    background: var(--clr-dark);
    padding-block: var(--space-xl);
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer__logo img {
    filter: brightness(0) invert(1);
    height: 36px;
    width: auto;
    opacity: .85;
}

.footer__copy {
    font-size: var(--text-sm);
    color: #94a3b8;
}

.footer__nav {
    display: flex;
    gap: var(--space-md);
}

.footer__nav a {
    font-size: var(--text-sm);
    color: #94a3b8;
    transition: color var(--transition);
}

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

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
    .services__grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Small tablet */
@media (max-width: 768px) {
    /* Nav */
    .nav__toggle { display: flex; }

    .nav__links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0; right: 0;
        background: var(--clr-white);
        border-bottom: 1px solid var(--clr-border);
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: var(--space-sm) var(--container-pad);
        box-shadow: var(--shadow-md);
    }

    .nav__links.is-open { display: flex; }

    .nav__link {
        padding: 0.75rem 0;
        border-bottom: 1px solid var(--clr-border);
        font-size: var(--text-base);
    }

    .nav__link--cta {
        margin-top: 0.5rem;
        text-align: center;
        border-bottom: none;
    }

    /* Hero */
    .hero__inner {
        grid-template-columns: 1fr;
    }

    .hero__graphic { display: none; }

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

    /* About */
    .about__inner {
        grid-template-columns: 1fr;
    }

    .about__stats {
        grid-template-columns: repeat(2, 1fr);
    }

    /* Contact */
    .contact__inner {
        grid-template-columns: 1fr;
    }

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

    /* Footer */
    .footer__inner {
        flex-direction: column;
        text-align: center;
    }

    .footer__nav { justify-content: center; }
}

/* Mobile */
@media (max-width: 480px) {
    .hero__actions { flex-direction: column; }
    .hero__actions .btn { width: 100%; justify-content: center; }
    .about__stats { grid-template-columns: 1fr 1fr; }
}