:root {
    /* Silver Palette */
    --silver-primary: #D4D4D8;
    /* --silver-light: #FFFFFF; */
    --silver-dark: #A1A1AA;
    --silver-glow: rgba(212, 212, 216, 0.4);
    --silver-glow-strong: rgba(255, 255, 255, 0.6);

    --black: #0A0A0A;
    --black-light: #111111;
    --black-lighter: #1A1A1A;
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #666666;
    --border: rgba(212, 212, 216, 0.15);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

/* ---- Custom Scrollbar ---- */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: #050505;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(to bottom, rgba(201, 201, 201, 0.1), rgba(255, 255, 255, 0.4), rgba(201, 201, 201, 0.1));
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.6);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.content {
    direction: rtl;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--black);
    color: var(--text-primary);
    line-height: 1.7;
    overflow-x: hidden;
}


@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(40px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes silverShine {
    0% {
        background-position: -200% center;
    }

    100% {
        background-position: 200% center;
    }
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
        box-shadow: 0 15px 45px var(--silver-glow);
    }

    50% {
        transform: translateY(-10px);
        box-shadow: 0 25px 60px var(--silver-glow-strong);
    }
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: radial-gradient(ellipse at center, var(--black-lighter) 0%, var(--black) 70%);
    padding: 2rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 212, 216, 0.05) 0%, transparent 70%);
    animation: pulse 6s ease-in-out infinite;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 900px;
}

.hero-label {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border: 1px solid var(--border);
    border-radius: 50px;
    font-size: 0.75rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--silver-primary);
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out;
    box-shadow: 0 0 15px rgba(212, 212, 216, 0.1);
}

.hero-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 500;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-title span {
    background: linear-gradient(135deg, var(--silver-dark), var(--silver-light), var(--silver-dark));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: silverShine 5s linear infinite;
    filter: drop-shadow(0 0 12px rgba(255, 255, 255, 0.2));
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}



.nav-dots {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.nav-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.nav-dot.active {
    background: var(--silver-light);
    box-shadow: 0 0 10px var(--silver-light);
    transform: scale(1.5);
}

section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.section-header {
    margin-bottom: 4rem;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--silver-primary);
    font-size: 0.875rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    margin-bottom: 1rem;
    text-shadow: 0 0 10px rgba(212, 212, 216, 0.3);
}

.section-label::before {
    content: '';
    display: block;
    width: 40px;
    height: 1px;
    background: var(--silver-primary);
    box-shadow: 0 0 5px var(--silver-primary);
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 500;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.section-title span {
    color: var(--silver-primary);
    text-shadow: 0 0 20px rgba(212, 212, 216, 0.2);
}

.overview-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.overview-image {
    position: relative;
}

.overview-image img {
    width: 100%;
    border-radius: 20px;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8), 0 0 30px rgba(212, 212, 216, 0.1);
}

.overview-image::before {
    content: '';
    position: absolute;
    inset: -20px;
    border: 1px solid var(--border);
    border-radius: 30px;
    z-index: -1;
    transition: 0.4s ease;
}

.overview-image:hover::before {
    border-color: rgba(212, 212, 216, 0.4);
    box-shadow: inset 0 0 20px rgba(212, 212, 216, 0.1);
}

.overview-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.overview-text p {
    margin-bottom: 1.5rem;
}

.challenges-list {
    list-style: none;
    display: grid;
    gap: 1.5rem;
}

.challenge-item {
    display: flex;
    gap: 1.5rem;
    padding: 2rem;
    background: var(--black-light);
    border: 1px solid var(--border);
    border-radius: 16px;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.challenge-item:hover {
    border-color: var(--silver-primary);
    transform: translateX(10px);
    box-shadow: 0 10px 30px var(--silver-glow);
}

.challenge-icon {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 12px;
    background: rgba(212, 212, 216, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--silver-primary);
    box-shadow: inset 0 0 10px rgba(212, 212, 216, 0.1);
}

.challenge-icon svg {
    width: 22px;
    height: 22px;
}

.challenge-content h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.challenge-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.solution-card {
    padding: 3rem 2rem;
    background: linear-gradient(145deg, var(--black-light), var(--black));
    border: 1px solid var(--border);
    border-radius: 24px;
    position: relative;
    overflow: hidden;
    transition: all 0.4s;
}

.solution-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--silver-light), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}

.solution-card:hover {
    transform: translateY(-10px);
    border-color: rgba(212, 212, 216, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), 0 0 30px var(--silver-glow);
}

.solution-card:hover::before {
    opacity: 1;
    box-shadow: 0 2px 10px var(--silver-light);
}

.solution-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: rgba(212, 212, 216, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--silver-light);
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.3));
}

.solution-icon svg {
    width: 26px;
    height: 26px;
}

.solution-card h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--silver-primary);
}

.solution-card ul {
    list-style: none;
}

.solution-card li {
    padding: 0.75rem 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
    padding-left: 1.5rem;
}

.solution-card li::before {
    content: '›';
    position: absolute;
    left: 0;
    color: var(--silver-primary);
    font-weight: bold;
    text-shadow: 0 0 5px var(--silver-primary);
}

.solution-card li:last-child {
    border-bottom: none;
}

.quote-section {
    text-align: center;
    padding: 8rem 2rem;
    position: relative;
}

.quote-section::before {
    content: '"';
    font-family: 'Playfair Display', serif;
    font-size: 20rem;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: rgba(212, 212, 216, 0.04);
    line-height: 1;
    pointer-events: none;
}

.quote-text {
    font-family: 'Playfair Display', serif;
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    line-height: 1.5;
    max-width: 800px;
    margin: 0 auto 2rem;
    position: relative;
    z-index: 2;
}

.quote-author {
    color: var(--silver-primary);
    font-size: 1rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-shadow: 0 0 15px rgba(212, 212, 216, 0.3);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.stat-card {
    text-align: center;
    padding: 3rem 2rem;
    background: var(--black-light);
    border: 1px solid var(--border);
    border-radius: 20px;
    position: relative;
    overflow: hidden;
    transition: 0.3s;
}

.stat-card:hover {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5), inset 0 0 20px rgba(212, 212, 216, 0.05);
}

.stat-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, transparent, var(--silver-light), transparent);
    transform: scaleX(0);
    transition: transform 0.4s;
}

.stat-card:hover::after {
    transform: scaleX(1);
}

.stat-number {
    font-family: 'Playfair Display', serif;
    font-size: 4rem;
    font-weight: 600;
    color: var(--silver-primary);
    line-height: 1;
    margin-bottom: 0.5rem;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.info-section {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

/* ─── بازطراحی کانتینر اطلاعات پروژه (PREMIUM UNIFIED CONTAINER) ─── */
.info-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--black-light);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.5), inset 0 0 30px rgba(212, 212, 216, 0.02);
    overflow: hidden;
    /* جهت مهار کردن بازتاب نوری لاین‌ها */
}

.info-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding: 1.5rem 0;
    background: transparent;
    border: none;
    border-radius: 0;
    position: relative;
    transition: none;
}

.info-item:first-child {
    padding-top: 0;
}

.info-item:last-child {
    padding-bottom: 0;
}

.info-item:hover {
    border-color: transparent;
    box-shadow: none;
}

/* خط جداکننده ثابت مینی‌مال */
.info-item:not(:last-child)::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: rgba(212, 212, 216, 0.08);
}

/* انیمیشن درخشش نقره‌ای روان (حرکت افقی بی‌نهایت) */
.info-item:not(:last-child)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: -50%;
    width: 40%;
    height: 1px;
    background: linear-gradient(90deg,
            transparent 0%,
            rgba(255, 255, 255, 0.35) 50%,
            transparent 100%);
    filter: drop-shadow(0 0 3px rgba(255, 255, 255, 0.4));
    animation: silverLineTravel 6s cubic-bezier(0.25, 0.46, 0.45, 0.94) infinite;
}

/* ایجاد تاخیر زمانی استگر (Staggered Delay) برای ریتم لوکس‌تر انیمیشن‌ها */
.info-item:nth-child(2)::after {
    animation-delay: 1.5s;
}

.info-item:nth-child(3)::after {
    animation-delay: 3s;
}

.info-item:nth-child(4)::after {
    animation-delay: 4.5s;
}

@keyframes silverLineTravel {
    0% {
        left: -50%;
        opacity: 0;
    }

    15% {
        opacity: 1;
    }

    85% {
        opacity: 1;
    }

    100% {
        left: 100%;
        opacity: 0;
    }
}

.info-label {
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--silver-dark);
}

.info-value {
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 400;
}

.cta-section {
    text-align: center;
    padding: 6rem 2rem;
    background: radial-gradient(ellipse at center, rgba(212, 212, 216, 0.08) 0%, transparent 70%);
    border-radius: 40px;
    margin: 4rem auto;
    max-width: 1000px;
    border: 1px solid var(--border);
    box-shadow: 0 0 50px rgba(0, 0, 0, 0.5);
}

.cta-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cta-text {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2.5rem;
    background: var(--silver-primary);
    color: var(--black);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.3s;
    border: 2px solid var(--silver-primary);
    box-shadow: 0 0 15px rgba(212, 212, 216, 0.3);
}

.btn:hover {
    background: transparent;
    color: var(--silver-light);
    border-color: var(--silver-light);
    transform: translateY(-3px);
    box-shadow: 0 10px 30px var(--silver-glow-strong), inset 0 0 10px rgba(255, 255, 255, 0.2);
}

.btn svg {
    width: 20px;
    height: 20px;
    transition: transform 0.3s;
}

.btn:hover svg {
    transform: translateX(5px);
}

/* ─── استایل جدید بخش اشتراک‌گذاری با هاور افکت‌های لوکس ─── */
.share-links {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 2.5rem;
}

.share-link {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--silver-dark);
    background-color: transparent;
    text-decoration: none;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.share-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.share-link:hover {
    border-color: rgba(255, 255, 255, 0.35);
    color: var(--silver-light);
    transform: scale(1.08) translateY(-3px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.15), inset 0 0 8px rgba(255, 255, 255, 0.05);
}

.share-link:hover svg {
    transform: scale(1.02);
}

/* footer {
            text-align: center;
            padding: 3rem 2rem;
            border-top: 1px solid var(--border);
            color: var(--text-muted);
            font-size: 0.875rem;
        } */

@media (max-width: 968px) {

    .overview-grid,
    .info-section {
        grid-template-columns: 1fr;
    }

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

    .nav-dots {
        display: none;
    }

    section {
        padding: 4rem 1.5rem;
    }
}

@media (max-width: 640px) {
    .hero-title {
        font-size: 2.5rem;
    }

    .challenge-item {
        flex-direction: column;
        gap: 1rem;
    }

    .stat-number {
        font-size: 3rem;
    }

    .info-list {
        padding: 1.5rem;
    }
}

/* FAQ Section Styles */
.faq-section {
    padding: 5rem 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.faq-container {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 3rem;
}

.faq-item {
    background: var(--black-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--silver-dark);
    box-shadow: 0 0 15px var(--silver-glow);
}

.faq-item[open] {
    border-color: var(--silver-primary);
    background: var(--black-lighter);
}

.faq-item summary {
    padding: 1.5rem;
    font-family: 'Inter', sans-serif;
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--silver-primary);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--silver-dark);
    transition: transform 0.3s ease;
}

.faq-item[open] summary::after {
    content: '−';
    color: var(--silver-light);
    transform: rotate(180deg);
}

.faq-content {
    padding: 0 1.5rem 1.5rem 1.5rem;
    color: var(--text-secondary);
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    font-size: 1rem;
    border-top: 1px solid var(--border);
    margin-top: 0.5rem;
    padding-top: 1.5rem;
    animation: fadeInDown 0.4s ease-out;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}