:root {
    /* Color Palette */
    --bg-dark: #0f1115;
    --bg-card: #1a1d24;
    --bg-alt: #15181e;
    --primary: #d3885c;
    --primary-hover: #e29b71;
    --secondary: #3b4252;
    --text-main: #f0f0f0;
    --text-muted: #a0a6b5;
    --white: #ffffff;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #d3885c 0%, #ab6a43 100%);
    --gradient-glass: rgba(26, 29, 36, 0.7);
    
    /* Typography */
    --font-main: 'Prompt', sans-serif;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-main);
    color: var(--text-main);
    background-color: var(--bg-dark);
}

body {
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.5rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-muted);
}

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

.highlight {
    color: var(--primary);
}

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

.mb-3 { margin-bottom: 1rem; }
.mt-5 { margin-top: 3rem; }

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section {
    padding: 6rem 0;
}

.bg-alt {
    background-color: var(--bg-alt);
}

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

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

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

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: 50px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: var(--font-main);
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: 0 4px 15px rgba(211, 136, 92, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #e29b71 0%, #c47c50 100%);
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(211, 136, 92, 0.4);
    color: var(--white);
}

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

.btn-secondary:hover {
    background: #4c5567;
    transform: translateY(-3px);
    color: var(--white);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

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

.btn-block {
    display: block;
    width: 100%;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 1000;
    transition: var(--transition);
    background: rgba(8, 9, 11, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.navbar.scrolled {
    background: rgba(5, 6, 8, 0.98);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.5);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    letter-spacing: -1px;
}

.logo-9 { color: var(--white); }
.logo-t { color: var(--text-muted); }
.logo-c { color: var(--primary); }

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-main);
    font-weight: 500;
}

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

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--white);
}

/* Hero Section */
.hero {
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 70% 50%, rgba(211, 136, 92, 0.15) 0%, rgba(15, 17, 21, 1) 60%);
    z-index: -1;
}

.hero-background::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
    background-size: 30px 30px;
    z-index: -1;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    animation: fadeInUp 1s ease 0.2s;
    animation-fill-mode: both;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    animation: fadeInUp 1s ease 0.4s;
    animation-fill-mode: both;
}

/* About RFID */
.feature-list {
    list-style: none;
    margin-top: 2rem;
}

.feature-list li {
    margin-bottom: 1rem;
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    color: var(--text-main);
}

.feature-list i {
    color: var(--primary);
    margin-top: 4px;
}

.glass-card {
    background: var(--gradient-glass);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 3rem;
}

.flex-center {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100%;
    min-height: 400px;
    position: relative;
}

.rfid-icon {
    font-size: 5rem;
    color: var(--primary);
    z-index: 2;
}

.pulse-ring {
    position: absolute;
    width: 100px;
    height: 100px;
    background: rgba(211, 136, 92, 0.2);
    border-radius: 50%;
    animation: pulse 2s infinite;
    z-index: 1;
}

/* RFID Tags */
.card {
    background: var(--bg-card);
    border-radius: 15px;
    padding: 2.5rem 2rem;
    transition: var(--transition);
    border: 1px solid transparent;
}

.card:hover {
    transform: translateY(-10px);
    border-color: rgba(211, 136, 92, 0.3);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: rgba(211, 136, 92, 0.1);
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.8rem;
    color: var(--primary);
    margin-bottom: 1.5rem;
}

.glass-box {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 12px;
    text-align: center;
}

.glass-box h4 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.glass-box p {
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.glass-box small {
    color: var(--text-muted);
}

/* Use Cases */
.use-case-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
}

.use-case-item {
    border-radius: 15px;
    overflow: hidden;
    position: relative;
    height: 300px;
}

.use-case-img {
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    transition: var(--transition);
}

.use-case-item:hover .use-case-img {
    transform: scale(1.05);
}

.use-case-img i {
    font-size: 2.5rem;
    color: var(--primary);
    margin-bottom: 1rem;
}

.use-case-img h3 {
    color: var(--white);
    margin-bottom: 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.use-case-img p {
    color: #e0e0e0;
    margin: 0;
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition);
}

.use-case-item:hover .use-case-img p {
    opacity: 1;
    transform: translateY(0);
}

/* Timeline/Solutions */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 2px;
    background: rgba(211, 136, 92, 0.2);
    top: 0;
    bottom: 0;
    left: 24px;
    margin-left: -1px;
}

.timeline-item {
    padding: 1.5rem 0 1.5rem 60px;
    position: relative;
}

.timeline-dot {
    position: absolute;
    width: 40px;
    height: 40px;
    left: 4px;
    top: 1.5rem;
    background: var(--bg-card);
    border: 2px solid var(--primary);
    border-radius: 50%;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    color: var(--primary);
}

.timeline-content {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Contact */
.contact-box {
    padding: 4rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-item i {
    color: var(--primary);
    font-size: 1.2rem;
    margin-top: 5px;
}

.form-group {
    margin-bottom: 1.5rem;
}

input, textarea {
    width: 100%;
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-main);
    font-family: var(--font-main);
    transition: var(--transition);
}

input:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: rgba(0, 0, 0, 0.4);
}

/* Footer */
footer {
    background: #08090b;
    padding: 2rem 0;
    text-align: center;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

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

.footer-logo {
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img-footer {
    height: 70px;
    width: auto;
    object-fit: contain;
    margin-bottom: 0.5rem;
}

.footer-logo p {
    font-size: 0.8rem;
    margin: 0;
    font-weight: normal;
    color: var(--text-muted);
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(211, 136, 92, 0.7);
    }
    70% {
        transform: scale(2.5);
        box-shadow: 0 0 0 30px rgba(211, 136, 92, 0);
    }
    100% {
        transform: scale(0.95);
        box-shadow: 0 0 0 0 rgba(211, 136, 92, 0);
    }
}

/* Responsive */
@media (max-width: 1200px) {
    .use-case-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .grid-2, .grid-3 {
        grid-template-columns: 1fr;
    }
    
    .hero-title {
        font-size: 3rem;
    }
}

@media (max-width: 768px) {
    .use-case-grid {
        grid-template-columns: 1fr;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        height: 100vh;
        width: 70%;
        background: var(--bg-card);
        flex-direction: column;
        justify-content: center;
        transition: var(--transition);
        box-shadow: -5px 0 20px rgba(0,0,0,0.5);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .hamburger {
        display: block;
        z-index: 1001;
    }
    
    .contact-box {
        padding: 2rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 1rem;
    }
}