/* ===================================
   Frntln Tech Services - Modern CSS
   =================================== */

/* CSS Variables & Color Scheme */
:root {
    /* Primary Colors - Based on Logo */
    --primary-color: #0066cc;
    --primary-dark: #004c99;
    --primary-light: #3385d6;
    --secondary-color: #00ccff;
    --accent-color: #ff6b35;
    
    /* Neutral Colors */
    --dark: #1a1a2e;
    --dark-gray: #2d2d44;
    --medium-gray: #6c757d;
    --light-gray: #e9ecef;
    --off-white: #f8f9fa;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    --gradient-dark: linear-gradient(135deg, var(--dark) 0%, var(--dark-gray) 100%);
    
    /* Typography */
    --font-primary: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-heading: 'Poppins', var(--font-primary);
    
    /* Spacing */
    --section-padding: 80px 0;
    --container-max: 1200px;
    
    /* Transitions */
    --transition-base: all 0.3s ease;
    --transition-slow: all 0.5s ease;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
    --shadow-hover: 0 15px 40px rgba(0, 102, 204, 0.25);
}

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

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

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

body {
    font-family: var(--font-primary);
    color: var(--dark);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}
ul.disc-style, article ul{
    list-style: disc;
}
/* ===================================
   Typography
   =================================== */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
}

h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
}

p {
    margin-bottom: 1rem;
    color: var(--medium-gray);
    font-size: 1.05rem;
}

/* Article Content - Blog Posts & Policy Pages */
article h1,
section .container div[style*="max-width: 900px"] h1,
section .container div[style*="max-width: 800px"] h1 {
    font-size: 2.25rem;
}

article h2,
section .container div[style*="max-width: 900px"] h2,
section .container div[style*="max-width: 800px"] h2 {
    font-size: 1.75rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

article h3,
section .container div[style*="max-width: 900px"] h3,
section .container div[style*="max-width: 800px"] h3 {
    font-size: 1.35rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

article h4,
section .container div[style*="max-width: 900px"] h4,
section .container div[style*="max-width: 800px"] h4 {
    font-size: 1.15rem;
    color: var(--dark);
}

/* ===================================
   Layout & Container
   =================================== */

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 20px;
}

.container-fluid {
    width: 100%;
    padding: 0 20px;
}

section {
    padding: var(--section-padding);
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title h2 {
    position: relative;
    display: inline-block;
    margin-bottom: 1rem;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
}

.section-title p {
    max-width: 600px;
    margin: 0 auto;
}

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

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--white);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition-base);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
    max-width: var(--container-max);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 50px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--dark);
}

.main-nav ul {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.main-nav a {
    color: var(--dark);
    font-weight: 500;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    position: relative;
}

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

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--dark);
    border-radius: 2px;
    transition: var(--transition-base);
}

/* ===================================
   Buttons
   =================================== */

.btn {
    display: inline-block;
    padding: 12px 30px;
    font-weight: 600;
    text-align: center;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition-base);
    font-size: 1rem;
    border: 0;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

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

.btn-outline:hover {
    background: var(--primary-color);
    color: var(--white);
}

.btn-light {
    background: var(--white);
    color: var(--primary-color);
}

.btn-light:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Cards
   =================================== */

.card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-base);
    height: 100%;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.card-img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.card-body {
    padding: 2rem;
}

.card-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.card-text {
    color: var(--medium-gray);
    margin-bottom: 1.5rem;
}

.card-icon {
    width: 60px;
    height: 60px;
    margin-bottom: 1.5rem;
}

/* ===================================
   Grid System
   =================================== */

.grid {
    display: grid;
    gap: 30px;
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-dark);
    color: var(--white);
    padding-top: 140px;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('../assets/images/digital-environment-scene.jpg') center/cover;
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.hero-text h1 {
    margin-bottom: 1.5rem;
    color: var(--white);
}

.hero-text p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

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

.hero-image img {
    width: 100%;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* ===================================
   Stats Section
   =================================== */

.stats {
    background: var(--gradient-primary);
    color: var(--white);
    padding: 60px 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    text-align: center;
}

.stat-item h3 {
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 0.5rem;
}

.stat-item p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
}

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

.site-footer {
    background: var(--dark);
    color: var(--light-gray);
    padding: 60px 0 30px;
}

/* ===================================
   Technology Stack Cards
   =================================== */

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    max-width: 1100px;
    margin: 0 auto;
}

.tech-item {
    transition: var(--transition-base);
}

.tech-card {
    background: var(--white);
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    height: 100%;
    position: relative;
    cursor: pointer;
}

.tech-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 1;
}

.tech-card:hover::before {
    opacity: 0.15;
}

.tech-card:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: 0 20px 40px rgba(0, 102, 204, 0.25);
}

.tech-card img {
    width: 100%;
    height: auto;
    display: block;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.tech-card:hover img {
    transform: scale(1.05);
}

@media (max-width: 768px) {
    .tech-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .tech-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 12px;
    }
}
.main-nav .btn.btn-primary {
    width: 160px;
}
.main-nav li:last-of-type {
    border-bottom: 0;
}
/* ===================================
   Footer
   =================================== */

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-about h3 {
    color: var(--white);
    margin-bottom: 1rem;
}

.footer-about p {
    color: var(--light-gray);
}

.footer-links h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.2rem;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--light-gray);
    transition: var(--transition-base);
}

.footer-links a:hover {
    color: var(--primary-light);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--dark-gray);
    border-radius: 50%;
    transition: var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.footer-bottom {
    border-top: 1px solid var(--dark-gray);
    padding-top: 30px;
    text-align: center;
    color: var(--medium-gray);
}

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

@media (max-width: 992px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 70%;
        height: calc(100vh - 70px);
        background: var(--white);
        box-shadow: var(--shadow-lg);
        transition: var(--transition-base);
        padding: 2rem;
    }
    
    .main-nav.active {
        right: 0;
    }
    
    .main-nav ul {
        flex-direction: column;
        gap: 0;
    }
    
    .main-nav li {
        width: 100%;
        border-bottom: 1px solid var(--light-gray);
    }
    
    .main-nav a {
        display: block;
        padding: 1rem 0;
    }
    .main-nav .btn.btn-primary{
        width: auto;
        margin-top: 30px;
    }
    .mobile-toggle {
        display: flex;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.text-center {
    text-align: center;
}

.text-white {
    color: var(--white) !important;
}

.bg-light {
    background-color: var(--off-white);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 2rem; }
.mt-4 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 2rem; }
.mb-4 { margin-bottom: 3rem; }

.fade-in {
    animation: fadeIn 0.8s ease-in;
}

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

.slide-in-left {
    animation: slideInLeft 0.8s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}