/* ================================================================
   IMPERIAL PRODUCTS LIMITED — style.css
   Mobile-first, hand-written CSS. No frameworks.
   ================================================================ */

/* --- Custom Properties --- */
:root {
    --clr-primary:       #0d2d5e;
    --clr-primary-light: #1a4a8a;
    --clr-accent:        #e8a020;
    --clr-accent-dark:   #c4880d;
    --clr-text:          #1a1a2e;
    --clr-text-muted:    #5a6474;
    --clr-surface:       #f4f7fb;
    --clr-white:         #ffffff;
    --clr-border:        #dde3ec;
    --clr-whatsapp:      #25d366;

    --font-body:    'Inter', system-ui, -apple-system, sans-serif;
    --font-heading: 'Montserrat', system-ui, -apple-system, sans-serif;

    --nav-h:      70px;
    --radius:     8px;
    --radius-lg:  16px;
    --shadow:     0 2px 12px rgba(13, 45, 94, 0.10);
    --shadow-lg:  0 8px 32px rgba(13, 45, 94, 0.15);
    --transition: 0.25s ease;
    --max-w:      1200px;
}

/* ================================================================
   RESET & BASE
   ================================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-body);
    color: var(--clr-text);
    background: var(--clr-white);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
address { font-style: normal; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Container --- */
.container {
    width: 100%;
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 1.25rem;
}

/* ================================================================
   BUTTONS
   ================================================================ */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: var(--radius);
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    letter-spacing: 0.03em;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    cursor: pointer;
    border: none;
}
.btn--primary {
    background: var(--clr-accent);
    color: var(--clr-primary);
}
.btn--primary:hover {
    background: var(--clr-accent-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(232, 160, 32, 0.4);
}
.btn--white {
    background: var(--clr-white);
    color: var(--clr-primary);
}
.btn--white:hover {
    background: var(--clr-surface);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
}
.btn--full { width: 100%; text-align: center; }

/* ================================================================
   NAVIGATION
   ================================================================ */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    transition: background var(--transition), box-shadow var(--transition);
}
.header.scrolled,
.header--solid {
    background: var(--clr-primary);
    box-shadow: var(--shadow);
}
.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--nav-h);
}
.nav__logo {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    gap: 0;
}
.logo-imperial {
    font-family: var(--font-heading);
    font-size: 1.35rem;
    font-weight: 800;
    color: var(--clr-white);
    letter-spacing: 0.08em;
}
.logo-sub {
    font-size: 0.58rem;
    letter-spacing: 0.15em;
    color: var(--clr-accent);
    text-transform: uppercase;
    font-weight: 600;
}

/* Mobile nav panel */
.nav__links {
    display: none;
    flex-direction: column;
    position: fixed;
    top: var(--nav-h);
    left: 0;
    width: 100%;
    background: var(--clr-primary);
    padding: 1rem 1.25rem 1.5rem;
    gap: 0.25rem;
    box-shadow: var(--shadow-lg);
}
.nav__links.open { display: flex; }

.nav__link {
    color: rgba(255, 255, 255, 0.85);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.65rem 0.75rem;
    border-radius: var(--radius);
    transition: color var(--transition), background var(--transition);
    display: block;
}
.nav__link:hover,
.nav__link.active {
    color: var(--clr-accent);
    background: rgba(255, 255, 255, 0.07);
}
.nav__link--cta {
    background: var(--clr-accent);
    color: var(--clr-primary) !important;
    font-weight: 700;
    text-align: center;
    margin-top: 0.5rem;
}
.nav__link--cta:hover { background: var(--clr-accent-dark); }

.nav__hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}
.nav__hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--clr-white);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}
.nav__hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__hamburger.open span:nth-child(2) { opacity: 0; }
.nav__hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Desktop nav */
@media (min-width: 768px) {
    .nav__links {
        display: flex;
        flex-direction: row;
        position: static;
        width: auto;
        background: transparent;
        padding: 0;
        gap: 0.25rem;
        box-shadow: none;
    }
    .nav__hamburger { display: none; }
    .nav__link { padding: 0.45rem 0.75rem; }
    .nav__link--cta { margin-top: 0; padding: 0.45rem 1.1rem; }
}

/* ================================================================
   HERO
   ================================================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: url('../images/stock_banner.jpg') center center / cover no-repeat;
    padding-top: var(--nav-h);
}
.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(13, 45, 94, 0.90) 0%,
        rgba(13, 45, 94, 0.68) 55%,
        rgba(13, 45, 94, 0.45) 100%
    );
}
.hero__content {
    position: relative;
    z-index: 1;
    padding-top: 3rem;
    padding-bottom: 4rem;
    max-width: 680px;
}
.hero__eyebrow {
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--clr-accent);
    margin-bottom: 1rem;
}
.hero__title {
    font-family: var(--font-heading);
    font-size: clamp(2.8rem, 9vw, 5.5rem);
    font-weight: 800;
    color: var(--clr-white);
    line-height: 1.0;
    margin-bottom: 1.25rem;
}
.hero__tagline {
    font-size: clamp(1rem, 2.5vw, 1.15rem);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 2.5rem;
    max-width: 500px;
    line-height: 1.75;
}

/* ================================================================
   STATS BAR
   ================================================================ */
.stats-bar {
    background: var(--clr-accent);
    padding: 1.5rem 0;
}
.stats-bar__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    text-align: center;
}
.stat__number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    color: var(--clr-primary);
    line-height: 1.1;
}
.stat__label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--clr-primary);
    opacity: 0.75;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
@media (min-width: 600px) {
    .stats-bar__grid { grid-template-columns: repeat(3, 1fr); }
}

/* ================================================================
   SECTION SHARED
   ================================================================ */
.section { padding: 5rem 0; }
.section__header {
    text-align: center;
    margin-bottom: 3rem;
}
.section__tag {
    display: inline-block;
    background: rgba(13, 45, 94, 0.08);
    color: var(--clr-primary-light);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    padding: 0.35rem 0.9rem;
    border-radius: 50px;
    margin-bottom: 0.75rem;
}
.section__title {
    font-family: var(--font-heading);
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 800;
    color: var(--clr-primary);
    margin-bottom: 0.5rem;
}
.section__divider {
    width: 50px;
    height: 4px;
    background: var(--clr-accent);
    border-radius: 2px;
    margin: 0.75rem auto 0;
}
.section__subtitle {
    margin-top: 1.1rem;
    color: var(--clr-text-muted);
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1rem;
}

/* ================================================================
   ABOUT
   ================================================================ */
.about { background: var(--clr-white); }
.about__grid { display: grid; gap: 3rem; }
.about__image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: var(--clr-surface);
}
.about__image img { width: 100%; height: 100%; object-fit: cover; }
.about__content p {
    color: var(--clr-text-muted);
    margin-bottom: 1rem;
    line-height: 1.75;
}
.about__lead {
    font-size: 1.08rem;
    color: var(--clr-text) !important;
    font-weight: 500;
}
.about__values {
    display: grid;
    gap: 1rem;
    margin: 1.75rem 0;
}
.value-card {
    background: var(--clr-surface);
    border-left: 4px solid var(--clr-accent);
    border-radius: 0 var(--radius) var(--radius) 0;
    padding: 1.25rem 1.5rem;
}
.value-card h3 {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.value-card p {
    font-size: 0.9rem;
    color: var(--clr-text-muted);
    margin: 0;
    line-height: 1.7;
}
.about__address {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-top: 0.5rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--clr-border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--clr-text-muted);
}
.about__address svg {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    margin-top: 2px;
    color: var(--clr-primary);
}
@media (min-width: 900px) {
    .about__values { grid-template-columns: 1fr 1fr; }
}

/* ================================================================
   SERVICES
   ================================================================ */
.services { background: var(--clr-surface); }
.services__grid { display: grid; gap: 1.5rem; }
.service-card {
    background: var(--clr-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: transform var(--transition), box-shadow var(--transition);
}
.service-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}
.service-card__icon {
    width: 52px;
    height: 52px;
    background: rgba(13, 45, 94, 0.08);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.25rem;
}
.service-card__icon svg {
    width: 26px;
    height: 26px;
    color: var(--clr-primary);
}
.service-card h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 0.65rem;
}
.service-card p {
    font-size: 0.92rem;
    color: var(--clr-text-muted);
    line-height: 1.75;
}
@media (min-width: 600px)  { .services__grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .services__grid { grid-template-columns: repeat(4, 1fr); } }

/* ================================================================
   BRANDS
   ================================================================ */
.brands { background: var(--clr-white); }
.brands__grid { display: grid; gap: 1.5rem; }
.brand-card {
    border: 1px solid var(--clr-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--transition), transform var(--transition);
}
.brand-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-3px);
}
.brand-card__logo {
    background: var(--clr-surface);
    height: 130px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
}
.brand-card__logo img {
    max-height: 70px;
    max-width: 180px;
    width: auto;
    object-fit: contain;
    margin: auto;
}
.brand-card__info { padding: 1.5rem; flex: 1; }
.brand-card__info h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 0.4rem;
}
.brand-card__tag {
    display: inline-block;
    background: rgba(232, 160, 32, 0.14);
    color: var(--clr-accent-dark);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 0.2rem 0.65rem;
    border-radius: 4px;
    margin-bottom: 0.8rem;
}
.brand-card__info p {
    font-size: 0.9rem;
    color: var(--clr-text-muted);
    line-height: 1.7;
}
@media (min-width: 600px)  { .brands__grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1024px) { .brands__grid { grid-template-columns: repeat(4, 1fr); } }

/* ================================================================
   CUSTOMERS
   ================================================================ */
.customers { background: var(--clr-primary); }
.customers .section__tag {
    background: rgba(255, 255, 255, 0.12);
    color: var(--clr-accent);
}
.customers .section__title { color: var(--clr-white); }
.customers .section__subtitle { color: rgba(255, 255, 255, 0.65); }
.customers__grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}
.customer-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: var(--radius);
    padding: 1rem 1.25rem;
    text-align: center;
    transition: background var(--transition), border-color var(--transition);
}
.customer-card:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: var(--clr-accent);
}
.customer-card span {
    font-weight: 600;
    font-size: 0.88rem;
    color: var(--clr-white);
}
.customers__note {
    text-align: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
    font-style: italic;
}
@media (min-width: 600px) { .customers__grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .customers__grid { grid-template-columns: repeat(4, 1fr); } }

/* ================================================================
   CTA BANNER
   ================================================================ */
.cta-banner {
    background: linear-gradient(135deg, var(--clr-accent) 0%, #f0b040 100%);
    padding: 4.5rem 0;
    text-align: center;
}
.cta-banner__content h2 {
    font-family: var(--font-heading);
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    font-weight: 800;
    color: var(--clr-primary);
    margin-bottom: 0.75rem;
}
.cta-banner__content p {
    color: rgba(13, 45, 94, 0.72);
    margin-bottom: 2rem;
    font-size: 1.05rem;
}

/* ================================================================
   FOOTER
   ================================================================ */
.footer { background: #07193a; color: rgba(255, 255, 255, 0.7); }
.footer__inner {
    display: grid;
    gap: 2.5rem;
    padding-top: 3rem;
    padding-bottom: 2.5rem;
}
.footer__brand p {
    margin-top: 0.75rem;
    font-size: 0.88rem;
    line-height: 1.75;
    color: rgba(255, 255, 255, 0.45);
}
.footer__links h4,
.footer__contact h4 {
    font-family: var(--font-heading);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--clr-accent);
    margin-bottom: 1rem;
}
.footer__links ul { display: flex; flex-direction: column; gap: 0.5rem; }
.footer__links a,
.footer__contact a {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    transition: color var(--transition);
    display: block;
    margin-bottom: 0.35rem;
}
.footer__links a:hover,
.footer__contact a:hover { color: var(--clr-white); }
.footer__contact address {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.5);
    line-height: 1.7;
    margin-top: 0.25rem;
}
.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding: 1.25rem 0;
    text-align: center;
    font-size: 0.82rem;
    color: rgba(255, 255, 255, 0.3);
}
@media (min-width: 768px) {
    .footer__inner { grid-template-columns: 2fr 1fr 1.5fr; }
}

/* ================================================================
   FLOATING WHATSAPP BUTTON
   ================================================================ */
.whatsapp-float {
    position: fixed;
    bottom: 1.75rem;
    right: 1.75rem;
    width: 56px;
    height: 56px;
    background: var(--clr-whatsapp);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 16px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: transform var(--transition), box-shadow var(--transition);
}
.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(37, 211, 102, 0.55);
}
.whatsapp-float svg {
    width: 30px;
    height: 30px;
    fill: var(--clr-white);
}

/* ================================================================
   CONTACT PAGE
   ================================================================ */
.contact-hero {
    background: var(--clr-primary);
    padding: calc(var(--nav-h) + 3rem) 0 3.5rem;
    color: var(--clr-white);
    text-align: center;
}
.back-link {
    display: inline-block;
    color: var(--clr-accent);
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    transition: opacity var(--transition);
}
.back-link:hover { opacity: 0.75; }
.contact-hero h1 {
    font-family: var(--font-heading);
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    margin-bottom: 0.75rem;
}
.contact-hero p {
    color: rgba(255, 255, 255, 0.72);
    max-width: 460px;
    margin: 0 auto;
    line-height: 1.7;
}
.contact-main { background: var(--clr-surface); }
.contact-layout { display: grid; gap: 2.5rem; }
.contact-info h2,
.contact-form-wrap h2 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--clr-primary);
    margin-bottom: 0.75rem;
}
.contact-info > p {
    color: var(--clr-text-muted);
    margin-bottom: 2rem;
    line-height: 1.75;
}
.contact-info__items { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-info__item { display: flex; align-items: flex-start; gap: 1rem; }
.contact-info__icon {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: rgba(13, 45, 94, 0.08);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
}
.contact-info__icon svg { width: 20px; height: 20px; color: var(--clr-primary); }
.contact-info__icon--whatsapp { background: rgba(37, 211, 102, 0.12); }
.contact-info__icon--whatsapp svg { color: var(--clr-whatsapp); fill: var(--clr-whatsapp); }
.contact-info__item h4 {
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--clr-primary);
    margin-bottom: 0.3rem;
}
.contact-info__item a,
.contact-info__item address {
    color: var(--clr-text-muted);
    font-size: 0.95rem;
    transition: color var(--transition);
    line-height: 1.6;
}
.contact-info__item a:hover { color: var(--clr-primary); }

/* Form */
.contact-form-wrap {
    background: var(--clr-white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
}
.form-group { margin-bottom: 1.25rem; }
.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--clr-text);
    margin-bottom: 0.4rem;
}
.form-group label span { color: #e53935; margin-left: 1px; }
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1.5px solid var(--clr-border);
    border-radius: var(--radius);
    font-family: var(--font-body);
    font-size: 0.95rem;
    color: var(--clr-text);
    background: var(--clr-white);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
    appearance: auto;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--clr-primary-light);
    box-shadow: 0 0 0 3px rgba(13, 45, 94, 0.10);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #aab3be; }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-row { display: grid; gap: 1.25rem; }

@media (min-width: 500px) { .form-row { grid-template-columns: 1fr 1fr; } }
@media (min-width: 900px) {
    .contact-layout { grid-template-columns: 1fr 1.5fr; align-items: start; }
}