/* =========================================
   MVN Trading — Design System & Styles
   ========================================= */

/* ---------- CSS Custom Properties ---------- */
:root {
    /* Colors */
    --color-bg:          #0a1628;
    --color-bg-light:    #0f1f38;
    --color-bg-card:     #121f35;
    --color-bg-card-alt: #162744;
    --color-accent:      #c9a84c;
    --color-accent-dim:  rgba(201, 168, 76, 0.15);
    --color-accent-glow: rgba(201, 168, 76, 0.25);
    --color-white:       #ffffff;
    --color-text:        #b8c4d8;
    --color-text-dim:    #6b7a94;
    --color-border:      rgba(201, 168, 76, 0.12);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --fs-hero: clamp(2.8rem, 6vw, 5rem);
    --fs-h2:   clamp(1.8rem, 3.5vw, 2.8rem);
    --fs-h3:   clamp(1.1rem, 2vw, 1.4rem);
    --fs-body: 1rem;
    --fs-small: 0.875rem;
    --fs-label: 0.75rem;

    /* Spacing */
    --section-py: clamp(5rem, 10vw, 8rem);
    --container-px: clamp(1.25rem, 4vw, 2.5rem);
    --container-max: 1200px;

    /* Transitions */
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --transition: 0.35s var(--ease);

    /* Radius */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-primary);
    font-size: var(--fs-body);
    line-height: 1.7;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

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

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

ul { list-style: none; }

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-px);
}

/* ---------- Section Labels & Titles ---------- */
.section-label {
    font-size: var(--fs-label);
    font-weight: 600;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1rem;
}

.section-title {
    font-size: var(--fs-h2);
    font-weight: 700;
    color: var(--color-white);
    line-height: 1.2;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
}

.section-desc {
    font-size: 1.05rem;
    color: var(--color-text);
    max-width: 600px;
    margin-bottom: 3rem;
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 14px 32px;
    font-family: var(--font-primary);
    font-size: var(--fs-small);
    font-weight: 600;
    letter-spacing: 0.5px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    text-transform: uppercase;
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-bg);
}
.btn--primary:hover {
    background: #d4b55a;
    box-shadow: 0 8px 30px rgba(201, 168, 76, 0.3);
    transform: translateY(-2px);
}

.btn--outline {
    background: transparent;
    color: var(--color-white);
    border: 1.5px solid rgba(255, 255, 255, 0.25);
}
.btn--outline:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

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

/* ---------- Reveal Animations ---------- */
.reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =========================================
   HEADER
   ========================================= */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 18px 0;
    transition: all 0.4s var(--ease);
}

.header.scrolled {
    padding: 12px 0;
    background: rgba(10, 22, 40, 0.92);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 10px;
    z-index: 1001;
}

.header__logo-icon {
    width: 36px;
    height: 36px;
}

.header__logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.header__logo-name {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--color-white);
    letter-spacing: 2px;
}

.header__logo-tagline {
    font-size: 0.6rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 4px;
}

.header__nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.header__link {
    font-size: var(--fs-small);
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
    letter-spacing: 0.3px;
    position: relative;
}

.header__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-accent);
    transition: width var(--transition);
}

.header__link:hover,
.header__link.active {
    color: var(--color-white);
}

.header__link:hover::after,
.header__link.active::after {
    width: 100%;
}

/* Burger */
.header__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    z-index: 1001;
    padding: 4px;
}

.header__burger span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--color-white);
    border-radius: 2px;
    transition: all 0.3s var(--ease);
}

.header__burger.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}
.header__burger.open span:nth-child(2) {
    opacity: 0;
}
.header__burger.open span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* =========================================
   HERO
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero__bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero__bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

.hero__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(10, 22, 40, 0.88) 0%,
        rgba(10, 22, 40, 0.6) 50%,
        rgba(10, 22, 40, 0.75) 100%
    );
}

.hero__content {
    position: relative;
    z-index: 1;
    padding-top: 120px;
    padding-bottom: 80px;
}

.hero__subtitle {
    font-size: var(--fs-label);
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
}

.hero__title {
    font-size: var(--fs-hero);
    font-weight: 800;
    color: var(--color-white);
    line-height: 1.08;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    max-width: 700px;
}

.hero__desc {
    font-size: 1.15rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 520px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero__actions {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Scroll indicator */
.hero__scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    z-index: 1;
}

.hero__scroll span {
    font-size: 0.65rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.4);
}

.hero__scroll-line {
    width: 1px;
    height: 50px;
    background: linear-gradient(to bottom, var(--color-accent), transparent);
    animation: scrollPulse 2s infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.5); }
    50%      { opacity: 1;   transform: scaleY(1); }
}

/* =========================================
   ABOUT
   ========================================= */
.about {
    padding: var(--section-py) 0;
    background: var(--color-bg);
}

.about__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.about__card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem;
}

.about__card p {
    margin-top: 0.8rem;
    font-size: 0.95rem;
    line-height: 1.8;
}

.about__card--accent {
    border-color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-accent-dim), transparent);
}

.about__card-title {
    font-size: var(--fs-h3);
    font-weight: 700;
    color: var(--color-white);
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.about__card--accent .about__card-title {
    border-bottom-color: rgba(201, 168, 76, 0.3);
}

.about__stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.about__mission {
    grid-column: 1 / -1;
}

.stat {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition);
}

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

.stat__number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    display: inline;
}

.stat__suffix {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--color-accent);
    display: inline;
}

.stat__label {
    font-size: var(--fs-small);
    color: var(--color-text-dim);
    margin-top: 0.3rem;
}

/* =========================================
   PRODUCTS
   ========================================= */
.products {
    padding: var(--section-py) 0;
    background: var(--color-bg-light);
}

.products__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.product-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}

.product-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.product-card__image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.product-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
}

.product-card:hover .product-card__image img {
    transform: scale(1.08);
}

.product-card__overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, var(--color-bg-card) 0%, transparent 60%);
}

.product-card__image-placeholder {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--color-bg-card-alt), var(--color-bg-card));
}

.product-card__image-placeholder svg {
    width: 80px;
    height: 80px;
}

.product-card__content {
    padding: 1.5rem;
}

.product-card__title {
    font-size: var(--fs-h3);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.7rem;
}

.product-card__desc {
    font-size: var(--fs-small);
    color: var(--color-text);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.product-card__list {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.product-card__list li {
    font-size: var(--fs-small);
    color: var(--color-text-dim);
    padding-left: 1.2rem;
    position: relative;
}

.product-card__list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 8px;
    width: 5px;
    height: 5px;
    background: var(--color-accent);
    border-radius: 50%;
}

/* =========================================
   ADVANTAGES
   ========================================= */
.advantages {
    padding: var(--section-py) 0;
    background: var(--color-bg);
}

.advantages__grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.advantage {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    text-align: center;
    transition: all var(--transition);
}

.advantage:hover {
    border-color: var(--color-accent);
    transform: translateY(-4px);
}

.advantage__icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 1.2rem;
}

.advantage__icon svg {
    width: 100%;
    height: 100%;
}

.advantage__title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.75rem;
}

.advantage__desc {
    font-size: var(--fs-small);
    color: var(--color-text);
    line-height: 1.7;
}

/* =========================================
   GLOBAL REACH
   ========================================= */
.reach {
    padding: var(--section-py) 0;
    background: var(--color-bg-light);
}

.reach__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
}

.reach__region {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2rem;
    transition: border-color var(--transition);
}

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

.reach__region-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 1rem;
}

.reach__region h4 {
    font-size: 1rem;
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 0.4rem;
}

.reach__region p {
    font-size: var(--fs-small);
    color: var(--color-text-dim);
}

/* =========================================
   CONTACT
   ========================================= */
.contact {
    padding: var(--section-py) 0;
    background: var(--color-bg);
}

.contact__grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 2.5rem;
    margin-top: 2rem;
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.contact__form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: var(--fs-small);
    font-weight: 500;
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px 16px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-white);
    font-family: var(--font-primary);
    font-size: var(--fs-small);
    transition: border-color var(--transition);
    outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-text-dim);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-accent);
}

.form-group select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%236b7a94' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.contact__info-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 2.5rem;
}

.contact__info-card h3 {
    font-size: var(--fs-h3);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--color-border);
}

.contact__info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact__info-item:last-child {
    margin-bottom: 0;
}

.contact__info-item svg {
    width: 22px;
    height: 22px;
    flex-shrink: 0;
    margin-top: 2px;
}

.contact__info-item strong {
    display: block;
    font-weight: 600;
    color: var(--color-white);
    font-size: var(--fs-small);
    margin-bottom: 2px;
}

.contact__info-item p {
    font-size: var(--fs-small);
    color: var(--color-text-dim);
    line-height: 1.6;
}

/* =========================================
   FOOTER
   ========================================= */
.footer {
    padding: 4rem 0 0;
    background: var(--color-bg-light);
    border-top: 1px solid var(--color-border);
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
    gap: 2.5rem;
    padding-bottom: 3rem;
}

.footer__desc {
    font-size: var(--fs-small);
    color: var(--color-text-dim);
    margin-top: 1.2rem;
    line-height: 1.8;
    max-width: 320px;
}

.footer__links h4 {
    font-size: var(--fs-small);
    font-weight: 700;
    color: var(--color-white);
    margin-bottom: 1.2rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer__links a {
    display: block;
    font-size: var(--fs-small);
    color: var(--color-text-dim);
    margin-bottom: 0.6rem;
    transition: color var(--transition);
}

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

.footer__bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 0;
    border-top: 1px solid var(--color-border);
    font-size: var(--fs-small);
    color: var(--color-text-dim);
}

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

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

/* Mobile */
@media (max-width: 768px) {
    .header__nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 280px;
        height: 100vh;
        background: rgba(10, 22, 40, 0.98);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2.5rem;
        transition: right 0.4s var(--ease);
        border-left: 1px solid var(--color-border);
    }

    .header__nav.open {
        right: 0;
    }

    .header__link {
        font-size: 1.1rem;
    }

    .header__burger {
        display: flex;
    }

    .hero__title {
        font-size: clamp(2rem, 8vw, 3rem);
    }

    .hero__actions {
        flex-direction: column;
    }

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

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

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

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

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

    .contact__form-row {
        grid-template-columns: 1fr;
    }

    .footer__inner {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .footer__bottom {
        flex-direction: column;
        gap: 0.5rem;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .reach__grid {
        grid-template-columns: 1fr;
    }

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

    .stat {
        padding: 1.5rem 1rem;
    }

    .stat__number {
        font-size: 2rem;
    }
}