/* ===========================
   CSS Reset & Base Styles
   =========================== */

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

:root {
    /* Colors */
    --color-primary: #26A17B;
    --color-secondary: #3B82F6;
    --color-bg-dark: #0A0E27;
    --color-bg-darker: #05070f;
    --color-bg-lighter: #1A1F3A;
    --color-text-white: #FFFFFF;
    --color-text-gray: #94A3B8;
    --color-border: rgba(255, 255, 255, 0.1);

    /* Gradient */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-secondary));

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 5rem;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.8;

    /* Layout */
    --container-max-width: 1280px;
    --header-height: 80px;
    --header-height-mobile: 70px;

    /* Transitions */
    --transition-base: all 0.3s ease;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background: var(--color-bg-dark);
    color: var(--color-text-gray);
    line-height: var(--line-height-base);
    overflow-x: hidden;
}

body.rtl {
    direction: rtl;
    text-align: right;
}

/* ===========================
   Typography
   =========================== */

h1, h2, h3, h4, h5, h6 {
    color: var(--color-text-white);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-lg);
}

h2 {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    margin-top: var(--spacing-xl);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
    margin-top: var(--spacing-lg);
}

p {
    margin-bottom: var(--spacing-md);
    font-size: clamp(1rem, 1.5vw, 1.125rem);
}

strong {
    color: var(--color-text-white);
    font-weight: 600;
}

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

a:hover {
    color: var(--color-secondary);
}

/* ===========================
   Layout
   =========================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===========================
   Header & Navigation
   =========================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: rgba(10, 14, 39, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    transition: var(--transition-base);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--spacing-lg);
}

/* Logo */
.logo {
    font-size: 1.5rem;
    font-weight: 800;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0;
    z-index: 10;
}

.logo-verus {
    color: var(--color-text-white);
}

.logo-fi {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Desktop Navigation */
.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    color: var(--color-text-gray);
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: var(--spacing-xs) 0;
    transition: var(--transition-base);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-text-white);
}

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

/* Language Selector */
.lang-selector {
    position: relative;
}

.lang-button {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--color-text-white);
    cursor: pointer;
    transition: var(--transition-base);
    font-family: var(--font-family);
    font-size: 0.9rem;
}

.lang-button:hover {
    border-color: var(--color-primary);
    background: rgba(38, 161, 123, 0.1);
}

.lang-flag {
    font-size: 1.2rem;
}

.lang-arrow {
    transition: transform 0.3s ease;
}

.lang-selector.open .lang-arrow {
    transform: rotate(180deg);
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + var(--spacing-xs));
    right: 0;
    background: var(--color-bg-lighter);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    padding: var(--spacing-xs);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition-base);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    max-height: 300px;
    overflow-y: auto;
}

.rtl .lang-dropdown {
    right: auto;
    left: 0;
}

.lang-selector.open .lang-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    color: var(--color-text-gray);
    border-radius: 8px;
    transition: var(--transition-base);
    cursor: pointer;
}

.lang-option:hover {
    background: rgba(38, 161, 123, 0.1);
    color: var(--color-text-white);
}

.lang-option.active {
    background: rgba(38, 161, 123, 0.2);
    color: var(--color-text-white);
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
    z-index: 1001;
}

.mobile-menu-btn span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--color-text-white);
    transition: var(--transition-base);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(7px, 7px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-base);
}

.mobile-menu.open {
    opacity: 1;
    visibility: visible;
}

.mobile-menu-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
}

.mobile-menu-content {
    position: absolute;
    top: var(--header-height-mobile);
    left: 0;
    right: 0;
    background: var(--color-bg-lighter);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-lg);
    transform: translateY(-100%);
    transition: transform 0.3s ease;
}

.mobile-menu.open .mobile-menu-content {
    transform: translateY(0);
}

.mobile-nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.mobile-nav-links a {
    color: var(--color-text-gray);
    font-size: 1.25rem;
    font-weight: 500;
    display: block;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-base);
}

.mobile-nav-links a:hover,
.mobile-nav-links a.active {
    color: var(--color-text-white);
    padding-left: var(--spacing-sm);
}

/* ===========================
   Main Content
   =========================== */

.main {
    margin-top: var(--header-height);
    padding: var(--spacing-2xl) 0;
    min-height: calc(100vh - var(--header-height) - 200px);
}

/* Content Sections */
.content-section {
    margin-bottom: var(--spacing-xl);
}

/* Cards */
.card {
    background: var(--color-bg-lighter);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    border-radius: 12px;
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: var(--transition-base);
}

.card:hover {
    border-left-color: var(--color-secondary);
    box-shadow: 0 10px 30px rgba(38, 161, 123, 0.1);
    transform: translateY(-2px);
}

.card h3 {
    margin-top: 0;
}

/* Product Links */
.product-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.product-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(38, 161, 123, 0.1);
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    color: var(--color-primary);
    font-weight: 500;
    transition: var(--transition-base);
}

.product-link:hover {
    background: rgba(38, 161, 123, 0.2);
    transform: translateX(5px);
}

/* ===========================
   Footer
   =========================== */

.footer {
    background: var(--color-bg-darker);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-lg);
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-brand .logo {
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    color: var(--color-text-gray);
    margin: 0;
    max-width: 400px;
}

.footer-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.footer-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--color-text-gray);
    font-weight: 500;
    transition: var(--transition-base);
}

.footer-link:hover {
    color: var(--color-primary);
    transform: translateY(-2px);
}

.footer-link svg {
    width: 20px;
    height: 20px;
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
}

.footer-bottom p {
    color: var(--color-text-gray);
    font-size: 0.9rem;
    margin: 0;
}

/* ===========================
   Animations
   =========================== */

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

.main {
    animation: fadeIn 0.6s ease;
}

/* ===========================
   Responsive Design
   =========================== */

@media (max-width: 968px) {
    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .header {
        height: var(--header-height-mobile);
    }

    .nav {
        height: var(--header-height-mobile);
    }

    .main {
        margin-top: var(--header-height-mobile);
        padding: var(--spacing-xl) 0;
    }
}

@media (max-width: 768px) {
    :root {
        --spacing-2xl: 3rem;
    }

    .container {
        padding: 0 var(--spacing-sm);
    }

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

    .footer-links {
        justify-content: center;
    }

    .product-links {
        flex-direction: column;
    }

    .product-link {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .lang-name {
        display: none;
    }

    .lang-button {
        padding: var(--spacing-xs);
    }

    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    .main {
        padding: var(--spacing-lg) 0;
    }

    .card {
        padding: var(--spacing-md);
    }
}

/* ===========================
   RTL Adjustments
   =========================== */

.rtl .nav-link::after {
    left: auto;
    right: 0;
}

.rtl .card {
    border-left: 1px solid var(--color-border);
    border-right: 4px solid var(--color-primary);
}

.rtl .card:hover {
    border-right-color: var(--color-secondary);
}

.rtl .product-link:hover {
    transform: translateX(-5px);
}

.rtl .mobile-nav-links a:hover,
.rtl .mobile-nav-links a.active {
    padding-left: 0;
    padding-right: var(--spacing-sm);
}

/* ===========================
   Scrollbar Styling
   =========================== */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-primary);
}