/* ═══════════════════════════════════════════════════════════
   OZONE TRADING — Custom CSS (Bootstrap 5 + Custom Design)
   Colors: Navy #0C1220 | Cream #F3F0EA | Teal #0ABBA8
═══════════════════════════════════════════════════════════ */

/* ── Fonts & Base ── */
:root {
    --ozone-navy:   #0C1220;
    --ozone-navy-deep: #080E1A;
    --ozone-cream:  #F3F0EA;
    --ozone-teal:   #0ABBA8;
    --ozone-teal-hover: #09A497;
    --font-condensed: 'Barlow Condensed', sans-serif;
    --font-body:    'Manrope', sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background-color: var(--ozone-cream);
    color: var(--ozone-navy);
    overflow-x: hidden;
}

/* ── Utility colours ── */
.text-accent       { color: var(--ozone-teal) !important; }
.text-dark-navy    { color: var(--ozone-navy) !important; }
.bg-accent         { background-color: var(--ozone-teal) !important; }
.text-white-40     { color: rgba(255,255,255,.40); }
.text-white-45     { color: rgba(255,255,255,.45); }
.text-white-35     { color: rgba(255,255,255,.35); }

/* ── Sections ── */
.py-section   { padding-top: 7rem; padding-bottom: 7rem; }
.section-dark  { background-color: var(--ozone-navy); }
.section-light { background-color: var(--ozone-cream); }

/* ── Typography helpers ── */
.section-rule {
    display: inline-block;
    width: 2rem;
    height: 1px;
    flex-shrink: 0;
}

.section-eyebrow {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .25em;
    text-transform: uppercase;
}

.section-heading {
    font-family: var(--font-condensed);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1;
    margin-bottom: 0;
}

.section-intro-text {
    color: rgba(12,18,32,.55);
    max-width: 22rem;
    font-size: .875rem;
    line-height: 1.7;
}

/* ══════════════════════════════════════════
   NAVBAR
══════════════════════════════════════════ */
.navbar-wrapper {
    transition: background-color .3s ease, box-shadow .3s ease;
    background-color: transparent;
}
.navbar-wrapper.scrolled {
    background-color: rgba(12,18,32,.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 4px 30px rgba(0,0,0,.3);
}
.navbar { min-height: 64px; }

/* Brand */
.ozone-logo-box {
    width: 32px;
    height: 32px;
    background-color: var(--ozone-teal);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.ozone-logo-text {
    font-family: var(--font-condensed);
    font-size: .875rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
}
.ozone-brand-name {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: #fff;
}

/* Nav links */
.ozone-nav-link {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: rgba(255,255,255,.6) !important;
    padding: 0 !important;
    transition: color .2s;
}
.ozone-nav-link:hover { color: #fff !important; }

/* Mobile menu */
.mobile-menu {
    background-color: var(--ozone-navy);
    border-top: 1px solid rgba(255,255,255,.1);
}
.mobile-nav-link {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: rgba(255,255,255,.7);
    text-decoration: none;
    transition: color .2s;
}
.mobile-nav-link:hover { color: #fff; }

/* ── Buttons ── */
.btn-ozone-primary {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .2em;
    text-transform: uppercase;
    background-color: var(--ozone-teal);
    color: #fff;
    border: none;
    border-radius: 0;
    padding: .75rem 2rem;
    transition: background-color .2s;
}
.btn-ozone-primary:hover { background-color: var(--ozone-teal-hover); color: #fff; }

.btn-ozone-outline {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    background: transparent;
    color: #fff;
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 0;
    padding: .75rem 2rem;
    transition: border-color .2s, background-color .2s;
}
.btn-ozone-outline:hover {
    border-color: rgba(255,255,255,.6);
    background-color: rgba(255,255,255,.06);
    color: #fff;
}

.btn-ozone-dark {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 700;
    letter-spacing: .2em;
    text-transform: uppercase;
    background-color: var(--ozone-navy);
    color: #fff;
    border: none;
    border-radius: 0;
    padding: .75rem 2.25rem;
    transition: background-color .2s;
}
.btn-ozone-dark:hover { background-color: var(--ozone-navy-deep); color: #fff; }

.btn-ozone-outline-white {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    background: transparent;
    color: #fff;
    border: 2px solid rgba(255,255,255,.45);
    border-radius: 0;
    padding: .75rem 2.25rem;
    transition: border-color .2s, background-color .2s;
}
.btn-ozone-outline-white:hover {
    border-color: #fff;
    background-color: rgba(255,255,255,.1);
    color: #fff;
}

.ozone-link-btn {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--ozone-navy) !important;
    text-decoration: none;
    transition: color .2s;
}
.ozone-link-btn:hover { color: var(--ozone-teal) !important; }

.ozone-link-btn-accent {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: var(--ozone-teal) !important;
    text-decoration: none;
    transition: opacity .2s;
}
.ozone-link-btn-accent:hover { opacity: .75; }

/* ══════════════════════════════════════════
   HERO
══════════════════════════════════════════ */
.hero-section {
    position: relative;
    background-color: var(--ozone-navy);
    min-height: 100vh;
}

.hero-grid-overlay {
    position: absolute;
    inset: 0;
    opacity: .035;
    background-image:
        linear-gradient(rgba(255,255,255,.6) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.6) 1px, transparent 1px);
    background-size: 64px 64px;
    pointer-events: none;
}
.hero-accent-panel {
    position: absolute;
    top: 0; right: 0;
    width: 33%;
    height: 100%;
    background-color: rgba(10,187,168,.04);
    pointer-events: none;
}
.hero-accent-line-v {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 1px;
    height: 66%;
    background-color: rgba(10,187,168,.25);
    pointer-events: none;
}
.hero-accent-line-h {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(10,187,168,.35), transparent);
    pointer-events: none;
}
.pt-hero { padding-top: 8rem; }

.hero-heading {
    font-family: var(--font-condensed);
    font-size: clamp(3.5rem, 8vw, 6.5rem);
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1;
    letter-spacing: -.01em;
}
.hero-subtext {
    color: rgba(255,255,255,.55);
    font-size: 1.1rem;
    max-width: 32rem;
    line-height: 1.75;
}

/* Stats grid */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1px;
    background-color: rgba(255,255,255,.08);
}
.stat-cell {
    background-color: var(--ozone-navy);
    padding: 1.75rem;
    transition: background-color .2s;
}
.stat-cell:hover { background-color: rgba(255,255,255,.04); }
.stat-value {
    font-family: var(--font-condensed);
    font-size: 1.875rem;
    font-weight: 700;
    color: var(--ozone-teal);
    line-height: 1;
    margin-bottom: .4rem;
}
.stat-label {
    font-family: var(--font-condensed);
    font-size: .65rem;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: rgba(255,255,255,.4);
}

/* ══════════════════════════════════════════
   SERVICES
══════════════════════════════════════════ */
.services-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1px;
    background-color: rgba(12,18,32,.1);
}
@media (min-width: 992px) {
    .services-grid { grid-template-columns: repeat(4, 1fr); }
}

.service-card {
    background-color: var(--ozone-cream);
    padding: 2rem;
    transition: background-color .2s;
    cursor: default;
}
.service-card:hover { background-color: #fff; }

.service-icon { font-size: 1.375rem; color: var(--ozone-teal); }

.service-title {
    font-family: var(--font-condensed);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--ozone-navy);
    margin-bottom: .75rem;
}
.service-desc {
    font-size: .8125rem;
    color: rgba(12,18,32,.5);
    line-height: 1.65;
    margin: 0;
}

/* ══════════════════════════════════════════
   PROCESS
══════════════════════════════════════════ */
.process-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background-color: rgba(255,255,255,.08);
}
@media (min-width: 576px) { .process-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 992px) { .process-grid { grid-template-columns: repeat(7, 1fr); } }

.process-step {
    background-color: var(--ozone-navy);
    padding: 1.5rem;
    transition: background-color .2s;
}
.process-step:hover { background-color: rgba(255,255,255,.04); }

.step-num {
    font-family: var(--font-condensed);
    font-size: 3rem;
    font-weight: 700;
    color: rgba(10,187,168,.15);
    line-height: 1;
    margin-bottom: 1.25rem;
}
.step-title {
    font-family: var(--font-condensed);
    font-size: .8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #fff;
    margin-bottom: .75rem;
}
.step-desc {
    font-size: .7rem;
    color: rgba(255,255,255,.35);
    line-height: 1.6;
    margin: 0;
}

/* ══════════════════════════════════════════
   INDUSTRIES
══════════════════════════════════════════ */
.industries-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background-color: rgba(12,18,32,.1);
}
@media (min-width: 576px) { .industries-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 992px) { .industries-grid { grid-template-columns: repeat(3, 1fr); } }

.industry-card {
    background-color: var(--ozone-cream);
    padding: 2.25rem;
    transition: background-color .2s;
    cursor: pointer;
}
.industry-card:hover { background-color: #fff; }
.industry-card:hover .industry-arrow { color: var(--ozone-teal); }

.industry-num {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
}
.industry-arrow {
    font-size: .875rem;
    color: rgba(12,18,32,.2);
    transition: color .2s;
}
.industry-title {
    font-family: var(--font-condensed);
    font-size: 1.5rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--ozone-navy);
    margin-bottom: .5rem;
}
.industry-desc {
    font-size: .8125rem;
    color: rgba(12,18,32,.45);
    margin: 0;
}

/* ══════════════════════════════════════════
   WHY OZONE
══════════════════════════════════════════ */
.reasons-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1px;
    background-color: rgba(255,255,255,.08);
}
@media (min-width: 576px) { .reasons-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 992px) { .reasons-grid { grid-template-columns: repeat(3, 1fr); } }

.reason-card {
    background-color: var(--ozone-navy);
    padding: 2rem;
    transition: background-color .2s;
}
.reason-card:hover { background-color: rgba(255,255,255,.04); }

.reason-icon { font-size: 1.375rem; color: var(--ozone-teal); }

.reason-title {
    font-family: var(--font-condensed);
    font-size: 1.125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #fff;
    margin-bottom: .75rem;
}
.reason-desc {
    font-size: .8125rem;
    color: rgba(255,255,255,.4);
    line-height: 1.65;
    margin: 0;
}

/* ══════════════════════════════════════════
   CATEGORIES
══════════════════════════════════════════ */
.categories-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: .75rem;
}
@media (min-width: 576px) { .categories-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 992px) { .categories-grid { grid-template-columns: repeat(3, 1fr); } }

.category-card {
    position: relative;
    overflow: hidden;
    aspect-ratio: 4/3;
    background-color: rgba(12,18,32,.15);
}
.category-card:hover .category-img { transform: scale(1.05); }

.category-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .5s ease;
}
.category-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(12,18,32,.75) 0%, rgba(12,18,32,.15) 60%, transparent 100%);
}
.category-info {
    position: absolute;
    bottom: 0; left: 0; right: 0;
    padding: 1.5rem;
}
.category-title {
    font-family: var(--font-condensed);
    font-size: 1.125rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #fff;
    margin-bottom: .25rem;
}
.category-count {
    font-family: var(--font-condensed);
    font-size: .65rem;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
}

/* ══════════════════════════════════════════
   CASE STUDIES
══════════════════════════════════════════ */
.case-card {
    border: 1px solid rgba(255,255,255,.1);
    padding: 2.25rem;
    background-color: rgba(255,255,255,.02);
    transition: background-color .2s;
}
.case-card:hover { background-color: rgba(255,255,255,.04); }

.case-client {
    font-family: var(--font-condensed);
    font-size: 1.25rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #fff;
    margin-bottom: .25rem;
}
.case-country { font-size: .7rem; }

.case-arrow-box {
    width: 32px;
    height: 32px;
    border: 1px solid rgba(10,187,168,.3);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.case-label {
    font-family: var(--font-condensed);
    font-size: .65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .2em;
    color: var(--ozone-teal);
}
.case-text {
    font-size: .8125rem;
    color: rgba(255,255,255,.55);
    line-height: 1.65;
    margin: 0;
}

.metric-value {
    font-family: var(--font-condensed);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ozone-teal);
    line-height: 1;
}
.metric-label {
    font-family: var(--font-condensed);
    font-size: .65rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: rgba(255,255,255,.35);
    margin-top: .25rem;
}

/* ══════════════════════════════════════════
   TESTIMONIALS
══════════════════════════════════════════ */
.testimonial-card {
    padding: 2rem;
    border: 1px solid rgba(12,18,32,.1);
    background-color: var(--ozone-cream);
    cursor: pointer;
    transition: all .3s ease;
}
.testimonial-card:hover { background-color: rgba(255,255,255,.7); }
.testimonial-card.active {
    border-color: var(--ozone-teal);
    background-color: #fff;
    box-shadow: 0 8px 32px rgba(0,0,0,.08);
}

.testimonial-quote {
    font-size: .8125rem;
    color: rgba(12,18,32,.65);
    line-height: 1.75;
    font-style: italic;
    margin-bottom: 2rem;
}
.testimonial-name {
    font-family: var(--font-condensed);
    font-weight: 700;
    font-size: .875rem;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: var(--ozone-navy);
}
.testimonial-role {
    font-size: .7rem;
    color: rgba(12,18,32,.45);
    margin-top: .125rem;
}
.testimonial-country { font-size: .7rem; }

/* Dots */
.testimonial-dot {
    height: 2px;
    border: none;
    border-radius: 0;
    background-color: rgba(12,18,32,.2);
    width: 1.25rem;
    cursor: pointer;
    padding: 0;
    transition: all .3s ease;
}
.testimonial-dot.active,
.testimonial-dot:hover {
    background-color: var(--ozone-teal);
    width: 2.5rem;
}

/* ══════════════════════════════════════════
   FAQ / ACCORDION
══════════════════════════════════════════ */
.ozone-accordion { --bs-accordion-bg: transparent; }

.ozone-accordion-item {
    background: transparent;
    border: none;
    border-bottom: 1px solid rgba(255,255,255,.1);
}

.ozone-accordion-btn {
    font-family: var(--font-condensed);
    font-size: 1rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .05em;
    color: #fff;
    background: transparent;
    padding: 1.5rem 0;
    box-shadow: none !important;
    transition: color .2s;
}
.ozone-accordion-btn:not(.collapsed) { color: var(--ozone-teal); background: transparent; }
.ozone-accordion-btn:hover           { color: var(--ozone-teal); }

/* Custom chevron */
.ozone-accordion-btn::after {
    filter: invert(62%) sepia(90%) saturate(400%) hue-rotate(140deg);
    background-size: 15px;
}
.ozone-accordion-btn:not(.collapsed)::after {
    filter: invert(62%) sepia(90%) saturate(400%) hue-rotate(140deg);
}

.ozone-accordion-body {
    font-size: .8125rem;
    color: rgba(255,255,255,.45);
    line-height: 1.75;
    padding: 0 0 1.5rem;
    background: transparent;
}

/* ══════════════════════════════════════════
   CTA SECTION
══════════════════════════════════════════ */
.cta-section { background-color: var(--ozone-teal); }

.cta-grid-overlay {
    position: absolute;
    inset: 0;
    opacity: .06;
    background-image:
        linear-gradient(rgba(255,255,255,.8) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,.8) 1px, transparent 1px);
    background-size: 64px 64px;
    pointer-events: none;
}

.cta-heading {
    font-family: var(--font-condensed);
    font-size: clamp(3rem, 7vw, 6rem);
    font-weight: 700;
    text-transform: uppercase;
    line-height: 1;
    margin-bottom: 0;
}
.cta-subtext {
    color: rgba(255,255,255,.7);
    font-size: 1.1rem;
    max-width: 28rem;
    line-height: 1.7;
}

/* Contact Form */
.contact-form-wrapper {
    max-width: 640px;
    background-color: rgba(12,18,32,.15);
    padding: 2.5rem;
    backdrop-filter: blur(4px);
}

.ozone-label {
    font-family: var(--font-condensed);
    font-size: .7rem;
    font-weight: 600;
    letter-spacing: .15em;
    text-transform: uppercase;
    color: #fff;
    margin-bottom: .4rem;
}

.ozone-input {
    background-color: rgba(255,255,255,.15);
    border: 1px solid rgba(255,255,255,.25);
    border-radius: 0;
    color: #fff;
    font-size: .875rem;
    padding: .75rem 1rem;
    transition: border-color .2s, background-color .2s;
}
.ozone-input::placeholder { color: rgba(255,255,255,.45); }
.ozone-input:focus {
    background-color: rgba(255,255,255,.2);
    border-color: rgba(255,255,255,.6);
    color: #fff;
    box-shadow: none;
    outline: none;
}
.ozone-input.is-invalid { border-color: #f87171; }

/* ══════════════════════════════════════════
   FOOTER
══════════════════════════════════════════ */
.ozone-footer { background-color: var(--ozone-navy-deep); }

.footer-tagline {
    font-size: .7rem;
    color: rgba(255,255,255,.3);
    line-height: 1.6;
    margin: 0;
}

.footer-col-heading {
    font-family: var(--font-condensed);
    font-size: .65rem;
    font-weight: 600;
    letter-spacing: .2em;
    text-transform: uppercase;
    color: rgba(255,255,255,.35);
}

.footer-link {
    font-size: .7rem;
    color: rgba(255,255,255,.5);
    text-decoration: none;
    transition: color .2s;
    display: block;
    line-height: 1.5;
}
.footer-link:hover { color: var(--ozone-teal); }

.footer-bottom { border-top: 1px solid rgba(255,255,255,.08); }

.footer-copy { font-size: .7rem; color: rgba(255,255,255,.2); }

.footer-legal-link {
    font-size: .7rem;
    color: rgba(255,255,255,.2);
    text-decoration: none;
    transition: color .2s;
}
.footer-legal-link:hover { color: rgba(255,255,255,.5); }

/* ══════════════════════════════════════════
   RESPONSIVE TWEAKS
══════════════════════════════════════════ */
@media (max-width: 991.98px) {
    .py-section { padding-top: 5rem; padding-bottom: 5rem; }
    .hero-heading { font-size: clamp(3rem, 10vw, 5rem); }
    .cta-heading  { font-size: clamp(2.5rem, 9vw, 4rem); }
    .contact-form-wrapper { padding: 1.5rem; }
}

@media (max-width: 575.98px) {
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .services-grid { grid-template-columns: 1fr; }
    .process-grid  { grid-template-columns: 1fr; }
    .contact-form-wrapper { margin-left: 0 !important; margin-right: 0 !important; }
}

/* ══════════════════════════════════════════
   SCROLL ANIMATIONS (Intersection Observer)
══════════════════════════════════════════ */
.fade-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity .6s ease, transform .6s ease;
}
.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}