/* 
    SrDev Tech Institutional Website - Design System
    Palette: Indigo/Violet/Slate
*/

:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --accent: #06b6d4;
    --accent-light: #22d3ee;
    
    --bg-main: #fafbff;
    --surface: #ffffff;
    
    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    
    --slate-50: #f8fafc;
    --slate-100: #f1f5f9;
    --slate-200: #e2e8f0;
    --slate-800: #1e293b;
    --slate-900: #0f172a;
    --slate-950: #020617;

    --eficlinic: #0ea5e9;
    --erestaurant: #10b981;

    /* Spacing */
    --container-max: 1280px;
    --section-padding: 8rem 1.5rem;
    
    /* Effects */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    
    --glass-bg: rgba(255, 255, 255, 0.7);
    --glass-border: rgba(255, 255, 255, 0.5);
    --glass-blur: blur(20px);
}

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

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Outfit', sans-serif;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

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

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Typography Utilities */
.text-gradient {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Layout Utilities */
.section {
    padding: var(--section-padding);
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: calc(100% - 3rem);
    max-width: var(--container-max);
    z-index: 1000;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar-inner {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-xl);
}

.navbar.scrolled {
    top: 0;
    width: 100%;
    max-width: none;
    border-radius: 0;
}

.navbar.scrolled .navbar-inner {
    border-radius: 0;
    border-top: none;
    border-left: none;
    border-right: none;
    background: rgba(255, 255, 255, 0.9);
}

.nav-links {
    display: flex;
    gap: 2.5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-family: 'Outfit', sans-serif;
    font-weight: 900;
    font-size: 1.5rem;
    color: white;
}

.navbar.scrolled .nav-logo {
    color: var(--slate-900);
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
}

.nav-links a:hover {
    color: var(--primary);
}

.nav-cta {
    background: var(--slate-900);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-cta:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 10px 20px -5px rgba(99, 102, 241, 0.4);
}

/* Hero Section */
.hero {
    position: relative;
    padding-top: 12rem;
    padding-bottom: 12rem;
    text-align: center;
    overflow: hidden;
    background: linear-gradient(rgba(15, 23, 42, 0.8), rgba(15, 23, 42, 0.9)), url('../assets/images/hero_bg.png') center/cover no-repeat;
    color: white;
}

.hero-bg-blobs {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.4;
    animation: blobMove 20s infinite alternate;
}

.blob-1 {
    width: 400px;
    height: 400px;
    background: var(--primary-light);
    top: -100px;
    left: -100px;
}

.blob-2 {
    width: 300px;
    height: 300px;
    background: var(--accent-light);
    bottom: -50px;
    right: -50px;
    animation-delay: -5s;
}

@keyframes blobMove {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(40px, 40px) scale(1.1); }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: white;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--slate-200);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5.5rem);
    margin-bottom: 1.5rem;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
    color: white;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: rgba(255, 255, 255, 0.7);
    max-width: 700px;
    margin: 0 auto 3rem;
}

.hero-ctas {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 1rem 2.5rem;
    border-radius: 1rem;
    font-weight: 800;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.4s ease;
    border: none;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 10px 30px -10px rgba(99, 102, 241, 0.5);
}

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px -15px rgba(99, 102, 241, 0.6);
}

.btn-secondary {
    background: white;
    color: var(--slate-900);
    border: 1px solid var(--slate-200);
}

.btn-secondary:hover {
    background: var(--slate-50);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Stats Section */
.stats {
    background: var(--slate-950);
    padding: 5rem 0;
    color: white;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 3rem;
    text-align: center;
}

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

@media (max-width: 640px) {
    .stats-grid {
        grid-template-columns: 1fr;
    }
}

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

.stat-item p {
    color: var(--text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
}

/* Products Section */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
    margin-top: 4rem;
}

@media (max-width: 1024px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

.product-card {
    background: white;
    border-radius: 2.5rem;
    padding: 3rem;
    border: 1px solid var(--slate-100);
    transition: all 0.5s ease;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
    background: var(--card-color, var(--primary));
    opacity: 0.8;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 40px 80px -20px rgba(0, 0, 0, 0.08);
}

.product-logo {
    width: 64px;
    height: 64px;
    margin-bottom: 2rem;
}

.product-card h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
}

.product-card p {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.product-features {
    margin-bottom: 2.5rem;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--slate-800);
}

.product-features li i {
    color: var(--card-color, var(--primary));
    font-size: 1rem;
}

.btn-product {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--slate-900);
    color: white;
    padding: 1rem;
    border-radius: 1rem;
    font-weight: 700;
    font-size: 0.875rem;
}

.btn-product:hover {
    background: var(--card-color, var(--primary));
    color: white;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-top: 4rem;
}

@media (max-width: 1200px) {
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .services-grid {
        grid-template-columns: 1fr;
    }
}

.service-card {
    background: var(--slate-50);
    padding: 2.5rem;
    border-radius: 2rem;
    border: 1px solid var(--slate-100);
    transition: all 0.3s ease;
}

.service-card:hover {
    background: white;
    border-color: var(--primary-light);
    transform: scale(1.02);
}

.service-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1.5rem;
    color: var(--primary);
}

.service-card h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.service-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

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

@media (max-width: 1024px) {
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
}

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

.section-header span {
    color: var(--primary);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    font-size: 0.75rem;
    margin-bottom: 1rem;
    display: block;
}

.section-header h2 {
    font-size: 3rem;
    color: var(--slate-900);
}

/* Contact Footer */
.footer {
    background: var(--slate-950);
    color: white;
    padding: 6rem 0 3rem;
}

.footer-top {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 4rem;
    margin-bottom: 4rem;
    padding-bottom: 4rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-info {
    max-width: 400px;
}

.footer-logo {
    font-size: 1.5rem;
    color: white;
    font-family: 'Outfit', sans-serif;
    font-weight: 900;
    margin-bottom: 1.5rem;
    display: block;
}

.footer-info p {
    color: var(--text-light);
    margin-bottom: 2rem;
}

.footer-links h5 {
    color: white;
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.875rem;
}

.footer-links ul li {
    margin-bottom: 1rem;
}

.footer-links ul li a {
    color: var(--text-light);
    font-size: 0.875rem;
}

.footer-links ul li a:hover {
    color: white;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
    color: var(--text-light);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Mobile Adjustments */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .section-header h2 {
        font-size: 2.25rem;
    }
    
    .hero {
        padding-top: 10rem;
    }
    
    .navbar {
        top: 1rem;
        width: calc(100% - 2rem);
    }
}