@font-face {
    font-family: Vazir;
    src: url('../fonts/Vazir.eot');
    src: url('../fonts/Vazir.eot?#iefix') format('embedded-opentype'),
    url('../fonts/Vazir.woff2') format('woff2'),
    url('../fonts/Vazir.woff') format('woff'),
    url('../fonts/Vazir.ttf') format('truetype');
    font-weight: normal;
    font-display:swap;
}


@font-face {
    font-family: Vazir;
    src: url('../fonts/Vazir-Medium.eot');
    src: url('../fonts/Vazir-Medium.eot?#iefix') format('embedded-opentype'),
    url('../fonts/Vazir-Medium.woff2') format('woff2'),
    url('../fonts/Vazir-Medium.woff') format('woff'),
    url('../fonts/Vazir-Medium.ttf') format('truetype');
    font-weight: 500;
    font-display:swap;
}

@font-face {
    font-family: Vazir;
    src: url('../fonts/Vazir-Bold.eot');
    src: url('../fonts/Vazir-Bold.eot?#iefix') format('embedded-opentype'),
    url('../fonts/Vazir-Bold.woff2') format('woff2'),
    url('../fonts/Vazir-Bold.woff') format('woff'),
    url('../fonts/Vazir-Bold.ttf') format('truetype');
    font-weight: 700;
    font-display:swap;
}

/* ===== RESET & BASE ===== */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --color-primary: #d3957e;
    --color-primary-dark: #c07d66;
    --color-bg: #182434;
    --color-bg-alt: #1e2d3d;
    --color-bg-card: #243544;
    --color-text: #e8e8ec;
    --color-text-muted: #a0a8b4;
    --color-border: #2e4050;
    --color-green: #4ade80;
    --color-red: #f87171;
    --font: 'Vazir', 'Tahoma', sans-serif;
    --max-width: 1140px;
    --header-h: 64px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.7;
    direction: rtl;
    padding-top: var(--header-h);
}

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

img {
    max-width: 100%;
}

/* ===== UTILITY ===== */
.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.section__diamond {
    display: block;
    margin: 0 auto 12px;
}

.section__header {
    text-align: center;
    margin-bottom: 48px;
}

.section__title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.section__subtitle {
    color: var(--color-text-muted);
    font-size: 1rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 28px;
    border-radius: 8px;
    font-family: var(--font);
    font-size: 0.95rem;
    font-weight: 500;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.25s;
}

.btn--primary {
    background: var(--color-primary);
    color: #0f0f14;
    border-color: var(--color-primary);
}

.btn--primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.btn--outline {
    background: transparent;
    color: var(--color-primary);
    border-color: var(--color-primary);
}

.btn--outline:hover {
    background: var(--color-primary);
    color: #0f0f14;
}

/* ===== HEADER ===== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-h);
    background: rgba(15, 15, 20, 0.92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
}

.logo__icon {
    font-size: 1.5rem;
}

.logo__img {
    height: 36px;
    width: auto;
}



/* ---- NAV ---- */
.nav__list {
    display: flex;
    list-style: none;
    gap: 4px;
}

.nav__link {
    display: block;
    padding: 8px 16px;
    border-radius: 6px;
    color: var(--color-text-muted);
    font-size: 0.9rem;
    transition: all 0.2s;
}

.nav__link:hover,
.nav__link.active {
    color: var(--color-primary);
    background: rgba(212, 168, 67, 0.1);
}

/* ---- HAMBURGER ---- */
.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.hamburger span {
    display: block;
    width: 26px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ===== HERO ===== */
.hero {
    min-height: calc(100vh - var(--header-h));
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(211, 149, 126, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.hero__title {
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 20px;
}

.hero .reveal.visible .hero__title {
    animation: titleFade 0.8s ease both;
}

@keyframes titleFade {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

.hero__desc {
    color: var(--color-text-muted);
    font-size: 1.05rem;
    margin-bottom: 32px;
    max-width: 520px;
}

.hero__actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero__visual {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero__svg {
    position: absolute;
    width: 100%;
    max-width: 420px;
    height: auto;
    z-index: 0;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-12px); }
}

.hero__price-card {
    animation: cardAppear 0.8s ease 0.2s both;
}

@keyframes cardAppear {
    from { opacity: 0; transform: scale(0.9) translateY(20px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.hero__price-value {
    display: inline-block;
    animation: pricePulse 2s ease-in-out infinite;
}

@keyframes pricePulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.85; }
}

.hero__price-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px 40px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 8px;
    width: 100%;
    max-width: 300px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    position: relative;
    z-index: 1;
}

.hero__price-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.hero__price-value {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--color-primary);
    direction: ltr;
}

.hero__price-unit {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

/* ===== PRICES ===== */
.prices {
    background: var(--color-bg-alt);
    position: relative;
    overflow: hidden;
}

.prices::before {
    content: '';
    position: absolute;
    bottom: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(211, 149, 126, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.prices__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.price-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 20px;
    transition: transform 0.2s, box-shadow 0.2s;
}

.price-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.price-card__name {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-bottom: 4px;
}

.price-card__value {
    font-size: 1.25rem;
    font-weight: 700;
    direction: ltr;
    display: block;
}

.price-card__change {
    font-size: 0.8rem;
    margin-top: 6px;
    direction: ltr;
}

.price-card__change.up { color: var(--color-green); }
.price-card__change.down { color: var(--color-red); }

/* ===== CALCULATOR ===== */
.calc__wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.calc__card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    overflow: hidden;
}

.calc__tabs {
    display: flex;
    border-bottom: 1px solid var(--color-border);
}

.calc__tab {
    flex: 1;
    padding: 10px;
    background: none;
    border: none;
    color: var(--color-text-muted);
    font-family: var(--font);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.calc__tab.active {
    color: var(--color-primary);
    background: rgba(212, 168, 67, 0.05);
}

.calc__tab.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 20%;
    right: 20%;
    height: 2px;
    background: var(--color-primary);
    border-radius: 2px;
}

.calc__body {
    padding: 24px;
}

.calc__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.calc__group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.calc__label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.calc__input,
.calc__select {
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-family: var(--font);
    font-size: 1rem;
    direction: ltr;
    transition: border-color 0.2s;
}

.calc__input:focus,
.calc__select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.calc__result {
    background: var(--color-bg);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
}

.calc__result-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.calc__result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    direction: ltr;
}

.calc__result-unit {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.calc__swap {
    width: 100%;
}

/* ---- Calc Info Sidebar ---- */
.calc__info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.calc__info-item {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: 16px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.calc__info-label {
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

.calc__info-value {
    font-size: 1.05rem;
    font-weight: 500;
    direction: ltr;
}

/* ===== CHART ===== */
.chart {
    background: var(--color-bg-alt);
    position: relative;
    overflow: hidden;
}

.chart::after {
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(211, 149, 126, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.chart__wrapper {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
}

.chart__controls {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
}

.chart__btn {
    padding: 8px 20px;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    color: var(--color-text-muted);
    font-family: var(--font);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
}

.chart__btn.active,
.chart__btn:hover {
    background: var(--color-primary);
    color: #0f0f14;
    border-color: var(--color-primary);
}

.chart__container {
    position: relative;
    width: 100%;
    height: 400px;
}

/* ===== NAV PANEL ===== */
.nav__link--panel {
    background: var(--color-primary);
    color: #fff;
    border-radius: 6px;
    padding: 8px 18px;
    font-weight: 500;
}

.nav__link--panel:hover {
    background: var(--color-primary-dark);
    color: #fff;
}

/* ===== STEPS ===== */
.steps {
    background: var(--color-bg);
}

.steps__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.step-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 32px 24px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.step-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
}

.step-card__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(211, 149, 126, 0.1);
    border-radius: 50%;
}

.step-card__title {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--color-text);
    margin-bottom: 8px;
}

.step-card__desc {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    line-height: 1.7;
}

/* ===== CUSTOM GOLD BAR ===== */
.bar {
    background: var(--color-bg-alt);
}

.bar__wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: center;
}

.goldbar-podium{
    height: 400px;
    margin: auto;
    display: block;
}
.bar__visual svg {
    width: 100%;
    max-width: 340px;
    height: auto;
    display: block;
    margin: 0 auto;
    filter: drop-shadow(0 8px 24px rgba(0, 0, 0, 0.3));
}

.bar__title {
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--color-primary);
    margin-bottom: 20px;
}

.bar__features {
    list-style: none;
    margin-bottom: 28px;
}

.bar__features li {
    position: relative;
    padding-right: 24px;
    margin-bottom: 10px;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.bar__features li::before {
    content: '';
    position: absolute;
    right: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.6;
}

/* ===== MOLTEN GOLD ===== */
.molten {
    background: var(--color-bg);
}

.molten__wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 32px;
    align-items: start;
}

.molten__info-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 12px;
}

.molten__info p {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.molten__features {
    list-style: none;
    margin-bottom: 28px;
}

.molten__features li {
    position: relative;
    padding-right: 24px;
    margin-bottom: 10px;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

.molten__features li::before {
    content: '';
    position: absolute;
    right: 0;
    top: 8px;
    width: 8px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 50%;
    opacity: 0.6;
}

.molten__calc-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    padding: 24px;
}

.molten__calc-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: 20px;
}

.molten__calc-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 20px;
}

.molten__calc-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.molten__calc-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.molten__calc-input {
    padding: 10px 14px;
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    color: var(--color-text);
    font-family: var(--font);
    font-size: 1rem;
    direction: ltr;
    transition: border-color 0.2s;
}

.molten__calc-input:focus {
    outline: none;
    border-color: var(--color-primary);
}

.molten__calc-result {
    background: var(--color-bg);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 4px;
    margin-bottom: 16px;
}

.molten__calc-result-label {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.molten__calc-result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary);
    direction: ltr;
}

.molten__calc-result-unit {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.molten__calc-detail {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.molten__calc-detail strong {
    color: var(--color-text);
}

/* ===== ABOUT ===== */
.about__content {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    color: var(--color-text-muted);
    font-size: 1rem;
    line-height: 2;
}

/* ===== FOOTER ===== */
.footer {
    border-top: 1px solid var(--color-border);
    padding: 24px 0;
}

.footer__inner {
    display: flex;
    justify-content: center;
}

.footer__copy {
    color: var(--color-text-muted);
    font-size: 0.85rem;
}

/* ===== LOADING SHIMMER ===== */
.shimmer {
    display: inline-block;
    width: 80px;
    height: 1.2em;
    background: linear-gradient(90deg, var(--color-bg-card) 25%, var(--color-bg-alt) 50%, var(--color-bg-card) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite;
    border-radius: 4px;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ===== SCROLL REVEAL ===== */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.reveal-delay-1 { transition-delay: 0s; }
.reveal-delay-2 { transition-delay: 0.1s; }
.reveal-delay-3 { transition-delay: 0.2s; }
.reveal-delay-4 { transition-delay: 0.3s; }
.reveal-delay-5 { transition-delay: 0.4s; }
.reveal-delay-6 { transition-delay: 0.5s; }

/* ===== PRICE FLASH ===== */
@keyframes priceFlash {
    0% { background-color: rgba(211, 149, 126, 0); }
    30% { background-color: rgba(211, 149, 126, 0.15); }
    100% { background-color: rgba(211, 149, 126, 0); }
}

.price-card.flash {
    animation: priceFlash 0.8s ease;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero__desc {
        margin: 0 auto 32px;
    }

    .hero__actions {
        justify-content: center;
    }

    .hero__title {
        font-size: 2rem;
    }

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

@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }

    .nav {
        position: fixed;
        top: var(--header-h);
        left: 0;
        right: 0;
        background: rgba(15, 15, 20, 0.98);
        border-bottom: 1px solid var(--color-border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s;
    }

    .nav.open {
        max-height: 400px;
    }

    .nav__list {
        flex-direction: column;
        padding: 16px;
        gap: 8px;
    }

    .nav__link {
        font-size: 1rem;
        padding: 12px 16px;
    }

    .section {
        padding: 48px 0;
    }

    .section__title {
        font-size: 1.5rem;
    }

    .prices__grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    }

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

    .chart__container {
        height: 280px;
    }

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

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

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

    .bar__wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .bar__features li {
        text-align: right;
    }

    .bar__visual svg {
        max-width: 240px;
    }
}

@media (max-width: 480px) {
    .hero__title {
        font-size: 1.6rem;
    }

    .hero__price-card {
        padding: 24px;
    }

    .hero__price-value {
        font-size: 1.6rem;
    }

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