/* ========================================
   FeNext Landing Page - Minimal & Elegant
   Refined Animations
   ======================================== */

/* CSS Variables */
:root {
    --color-white: #ffffff;
    --color-black: #000000;
    --color-gray-50: #fafafa;
    --color-gray-100: #f5f5f5;
    --color-gray-200: #e5e5e5;
    --color-gray-300: #d4d4d4;
    --color-gray-400: #a3a3a3;
    --color-gray-500: #737373;
    --color-gray-600: #525252;
    --color-gray-700: #404040;
    --color-gray-800: #262626;
    --color-gray-900: #171717;

    --font-en: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-fa: 'Vazirmatn', 'Inter', sans-serif;

    --transition-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);
    --transition-elegant: cubic-bezier(0.4, 0, 0.2, 1);

    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 16px 40px rgba(0, 0, 0, 0.12);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-en);
    background-color: var(--color-white);
    color: var(--color-black);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body.rtl {
    font-family: var(--font-fa);
}

/* ========================================
   Navigation
   ======================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 2rem;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
    transition: all 0.5s var(--transition-elegant);
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-small {
    width: 36px;
    height: 36px;
    opacity: 0;
    animation: gentleFadeIn 1.2s var(--transition-elegant) 0.2s forwards;
    text-decoration: none;
    transition: transform 0.4s var(--transition-elegant);
}

.logo-small:hover {
    transform: scale(1.08);
}

.logo-small img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2.5rem;
    opacity: 0;
    animation: gentleFadeIn 1.2s var(--transition-elegant) 0.3s forwards;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-gray-500);
    text-decoration: none;
    position: relative;
    padding: 0.5rem 0;
    transition: color 0.4s var(--transition-elegant);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-black);
    transition: width 0.4s var(--transition-elegant);
}

.nav-link:hover {
    color: var(--color-black);
}

.nav-link:hover::after {
    width: 100%;
}

.lang-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    opacity: 0;
    animation: gentleFadeIn 1.2s var(--transition-elegant) 0.4s forwards;
}

.lang-btn {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-gray-400);
    text-decoration: none;
    padding: 0.4rem 0.7rem;
    border-radius: 6px;
    transition: all 0.4s var(--transition-elegant);
    letter-spacing: 0.05em;
}

.lang-btn:hover {
    color: var(--color-black);
    background: var(--color-gray-100);
}

.lang-btn.active {
    color: var(--color-white);
    background: var(--color-black);
}

.lang-divider {
    color: var(--color-gray-300);
    user-select: none;
    font-size: 0.75rem;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 6rem 2rem 2rem;
    overflow: hidden;
    background: linear-gradient(180deg, var(--color-white) 0%, var(--color-gray-50) 100%);
}

/* Hero Background */
.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

/* Particles Canvas */
#particles-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.8;
}

/* Gradient Orbs - More subtle */
.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.25;
    animation-timing-function: var(--transition-elegant);
    animation-iteration-count: infinite;
    animation-direction: alternate;
}

.gradient-orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.06) 0%, transparent 70%);
    top: -20%;
    right: -15%;
    animation: orbFloat 30s infinite;
}

.gradient-orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.04) 0%, transparent 70%);
    bottom: -15%;
    left: -12%;
    animation: orbFloat 35s infinite reverse;
}

.gradient-orb-3 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.03) 0%, transparent 70%);
    top: 35%;
    left: 55%;
    animation: orbFloat 40s infinite;
}

@keyframes orbFloat {
    0% {
        transform: translate(0, 0) scale(1);
    }

    33% {
        transform: translate(-20px, 15px) scale(1.05);
    }

    66% {
        transform: translate(15px, -10px) scale(0.98);
    }

    100% {
        transform: translate(0, 0) scale(1);
    }
}

/* Grid Pattern - More subtle */
.grid-pattern {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(0, 0, 0, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 0, 0, 0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, black 10%, transparent 60%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 10%, transparent 60%);
}

/* Hero Content */
.hero-content {
    text-align: center;
    z-index: 10;
    max-width: 900px;
}

/* Brand Name with Animated Gradient */
.brand-name {
    font-size: clamp(4rem, 15vw, 10rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 0.5rem;
    line-height: 1;
    background: linear-gradient(135deg,
            var(--color-black) 0%,
            var(--color-gray-600) 25%,
            var(--color-black) 50%,
            var(--color-gray-500) 75%,
            var(--color-black) 100%);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0;
    animation:
        brandReveal 1.5s var(--transition-elegant) 0.3s forwards,
        gradientShift 8s ease-in-out infinite;
    animation-delay: 0.3s, 1.8s;
}

/* English Brand Name */
.brand-name-en {
    direction: ltr;
}

/* Persian Brand Name */
.brand-name-fa {
    direction: rtl;
    letter-spacing: 0;
    font-size: clamp(3.5rem, 12vw, 8rem);
}

@keyframes brandReveal {
    0% {
        opacity: 0;
        transform: translateY(40px);
        filter: blur(8px);
    }

    100% {
        opacity: 1;
        transform: translateY(0);
        filter: blur(0);
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }

    50% {
        background-position: 100% 50%;
    }

    100% {
        background-position: 0% 50%;
    }
}

/* Slogan */
.slogan {
    font-size: clamp(0.95rem, 2vw, 1.15rem);
    font-weight: 400;
    color: var(--color-gray-500);
    letter-spacing: 0.25em;
    text-transform: uppercase;
    margin-bottom: 3rem;
    opacity: 0;
    animation: gentleSlideUp 1.2s var(--transition-elegant) 0.8s forwards;
}

body.rtl .slogan {
    letter-spacing: 0.08em;
    text-transform: none;
}

/* CTA Buttons */
.cta-container {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    opacity: 0;
    animation: gentleSlideUp 1.2s var(--transition-elegant) 1s forwards;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 100px;
    transition: all 0.5s var(--transition-elegant);
    position: relative;
    overflow: hidden;
}

.cta-btn.primary {
    color: var(--color-white);
    background: var(--color-black);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.15);
}

.cta-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);
}

.cta-btn.secondary {
    color: var(--color-black);
    background: transparent;
    border: 1.5px solid var(--color-gray-300);
}

.cta-btn.secondary:hover {
    border-color: var(--color-black);
    background: var(--color-gray-50);
    transform: translateY(-2px);
}

.arrow-icon {
    width: 16px;
    height: 16px;
    transition: transform 0.4s var(--transition-elegant);
}

.cta-btn:hover .arrow-icon {
    transform: translateX(3px);
}

body.rtl .arrow-icon.rtl-flip {
    transform: scaleX(-1);
}

body.rtl .cta-btn:hover .arrow-icon.rtl-flip {
    transform: scaleX(-1) translateX(3px);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    opacity: 0;
    animation: gentleFadeIn 1.5s var(--transition-elegant) 1.5s forwards;
}

.scroll-mouse {
    width: 22px;
    height: 36px;
    border: 1.5px solid var(--color-gray-300);
    border-radius: 11px;
    position: relative;
}

.scroll-wheel {
    width: 3px;
    height: 6px;
    background: var(--color-gray-400);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2.5s var(--transition-elegant) infinite;
}

@keyframes scrollWheel {

    0%,
    100% {
        opacity: 0.8;
        transform: translateX(-50%) translateY(0);
    }

    50% {
        opacity: 0.2;
        transform: translateX(-50%) translateY(10px);
    }
}

.scroll-text {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--color-gray-400);
    text-transform: uppercase;
    letter-spacing: 0.2em;
}

/* ========================================
   Section Common Styles
   ======================================== */
.section-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-label {
    display: inline-block;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-bottom: 1rem;
    padding: 0.5rem 1rem;
    background: var(--color-gray-100);
    border-radius: 100px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    margin-bottom: 1.25rem;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-description {
    font-size: 1.05rem;
    color: var(--color-gray-500);
    line-height: 1.8;
}

/* ========================================
   About Section
   ======================================== */
.about-section {
    padding: 8rem 0;
    background: var(--color-white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 2.5rem 1.5rem;
    background: var(--color-gray-50);
    border-radius: 20px;
    border: 1px solid var(--color-gray-100);
    transition: all 0.5s var(--transition-elegant);
}

.stat-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    background: var(--color-white);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    color: var(--color-black);
    line-height: 1;
}

.stat-suffix {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-gray-400);
}

.stat-label {
    display: block;
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: var(--color-gray-500);
    font-weight: 500;
}

/* ========================================
   Services Section
   ======================================== */
.services-section {
    padding: 8rem 0;
    background: var(--color-gray-50);
}

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

.service-card {
    padding: 2.5rem;
    background: var(--color-white);
    border-radius: 24px;
    border: 1px solid var(--color-gray-100);
    transition: all 0.5s var(--transition-elegant);
    position: relative;
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-black), var(--color-gray-600));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s var(--transition-elegant);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.service-card:hover::before {
    transform: scaleX(1);
}

.service-icon {
    width: 52px;
    height: 52px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-gray-100);
    border-radius: 14px;
    margin-bottom: 1.5rem;
    transition: all 0.5s var(--transition-elegant);
}

.service-icon svg {
    width: 26px;
    height: 26px;
    stroke: var(--color-black);
    transition: stroke 0.5s var(--transition-elegant);
}

.service-card:hover .service-icon {
    background: var(--color-black);
}

.service-card:hover .service-icon svg {
    stroke: var(--color-white);
}

.service-title {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    color: var(--color-black);
}

.service-desc {
    font-size: 0.95rem;
    color: var(--color-gray-500);
    line-height: 1.7;
}

/* ========================================
   Features Section
   ======================================== */
.features-section {
    padding: 6rem 0;
    background: var(--color-black);
    color: var(--color-white);
}

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

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 1.25rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.02);
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.06);
    transition: all 0.5s var(--transition-elegant);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-4px);
}

.feature-icon {
    flex-shrink: 0;
    width: 46px;
    height: 46px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    transition: all 0.5s var(--transition-elegant);
}

.feature-icon svg {
    width: 22px;
    height: 22px;
    stroke: var(--color-white);
}

.feature-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.feature-content p {
    font-size: 0.9rem;
    color: var(--color-gray-400);
    line-height: 1.6;
}

/* ========================================
   Contact Section
   ======================================== */
.contact-section {
    padding: 8rem 0;
    background: var(--color-white);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content .section-label {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s var(--transition-elegant);
}

.contact-content .section-title {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s var(--transition-elegant) 0.1s;
}

.contact-content .section-description {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.8s var(--transition-elegant) 0.2s;
    margin-bottom: 2.5rem;
}

.contact-content.visible .section-label,
.contact-content.visible .section-title,
.contact-content.visible .section-description {
    opacity: 1;
    transform: translateY(0);
}

.email-link {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.4rem;
    font-weight: 600;
    color: var(--color-black);
    text-decoration: none;
    padding: 1.25rem 2.5rem;
    border: 1.5px solid var(--color-black);
    border-radius: 100px;
    transition: all 0.5s var(--transition-elegant);
    opacity: 0;
    transform: translateY(20px);
}

.contact-content.visible .email-link {
    opacity: 1;
    transform: translateY(0);
    transition-delay: 0.3s;
}

.email-text {
    direction: ltr;
}

.email-icon {
    width: 20px;
    height: 20px;
    transition: transform 0.4s var(--transition-elegant);
}

.email-link:hover {
    background: var(--color-black);
    color: var(--color-white);
    transform: translateY(-3px);
    box-shadow: 0 12px 35px rgba(0, 0, 0, 0.15);
}

.email-link:hover .email-icon {
    transform: translateX(4px);
}

body.rtl .email-link:hover .email-icon.rtl-flip {
    transform: scaleX(-1) translateX(4px);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    padding: 3rem 2rem;
    background: var(--color-gray-900);
    color: var(--color-white);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--color-white);
    background: linear-gradient(135deg, var(--color-white) 0%, var(--color-gray-400) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-copy {
    font-size: 0.85rem;
    color: var(--color-gray-400);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-link {
    font-size: 0.85rem;
    color: var(--color-gray-400);
    text-decoration: none;
    transition: color 0.4s var(--transition-elegant);
}

.footer-link:hover {
    color: var(--color-white);
}

/* ========================================
   Animations - Smooth & Elegant
   ======================================== */
@keyframes gentleFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes gentleSlideUp {
    from {
        opacity: 0;
        transform: translateY(25px);
    }

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

/* Scroll Reveal - More subtle */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 1s var(--transition-elegant);
}

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

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

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

@media (max-width: 768px) {
    .nav {
        padding: 0.75rem 1.5rem;
    }

    .nav-links {
        display: none;
    }

    .logo-small {
        width: 30px;
        height: 30px;
    }

    .hero {
        padding: 5rem 1.5rem 2rem;
    }

    .gradient-orb {
        filter: blur(80px);
        opacity: 0.2;
    }

    .gradient-orb-1 {
        width: 350px;
        height: 350px;
    }

    .gradient-orb-2 {
        width: 300px;
        height: 300px;
    }

    .gradient-orb-3 {
        width: 250px;
        height: 250px;
    }

    .cta-container {
        flex-direction: column;
        align-items: center;
    }

    .cta-btn {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .scroll-indicator {
        bottom: 2rem;
    }

    .about-section,
    .services-section,
    .contact-section {
        padding: 5rem 0;
    }

    .features-section {
        padding: 4rem 0;
    }

    .stats-grid {
        gap: 1rem;
    }

    .stat-card {
        padding: 1.5rem 1rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .service-card {
        padding: 2rem;
    }

    .feature-item {
        padding: 1.5rem;
    }

    .email-link {
        font-size: 1rem;
        padding: 1rem 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .slogan {
        font-size: 0.85rem;
        letter-spacing: 0.15em;
    }

    body.rtl .slogan {
        letter-spacing: 0.05em;
    }

    .section-container {
        padding: 0 1.25rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .section-description {
        font-size: 0.95rem;
    }
}

/* ========================================
   Reduced Motion
   ======================================== */
@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .gradient-orb {
        animation: none;
    }

    .scroll-wheel {
        animation: none;
    }

    .brand-name {
        animation: gentleFadeIn 0.01ms forwards !important;
    }

    html {
        scroll-behavior: auto;
    }
}