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

:root {
    --primary-color: #c41e3a;
    --primary-dark: #a01729;
    --secondary-color: #f8f9fa;
    --accent-color: #ffc107;
    --text-primary: #2c3e50;
    --text-secondary: #6c757d;
    --text-light: #ffffff;
    --bg-light: #ffffff;
    --bg-gray: #f8f9fa;
    --bg-dark: #2c3e50;
    --border-color: #e9ecef;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
    --shadow-hover: 0 5px 20px rgba(0,0,0,0.15);
    --border-radius: 8px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    width: 100%;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 1.2rem;
    color: var(--primary-color);
}

.nav-logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.login-btn {
    background-color: var(--primary-color);
    color: var(--text-light);
    padding: 10px 18px;
    border-radius: var(--border-radius);
    margin-left: 1rem;
    transition: var(--transition);
    min-height: 44px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.login-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    color: var(--text-light);
}

.login-btn::after {
    display: none;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--bg-gray) 0%, var(--bg-light) 100%);
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow-x: hidden;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.highlight {
    color: var(--primary-color);
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
    transform: translateY(-2px);
}

/* Dashboard Preview */
.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.dashboard-preview {
    background: var(--bg-light);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    overflow: hidden;
    width: 100%;
    max-width: 500px;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(-2deg) rotateX(2deg);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.preview-header {
    background: var(--bg-gray);
    padding: 12px 20px;
    display: flex;
    align-items: center;
    gap: 12px;
    border-bottom: 1px solid var(--border-color);
}

.preview-dots {
    display: flex;
    gap: 6px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.dot.red { background-color: #ff5f56; }
.dot.yellow { background-color: #ffbd2e; }
.dot.green { background-color: #27ca3f; }

.preview-title {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.preview-content {
    display: flex;
    height: 300px;
}

.preview-sidebar {
    width: 200px;
    background: var(--bg-gray);
    padding: 20px 0;
    border-right: 1px solid var(--border-color);
}

.sidebar-item {
    padding: 12px 20px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    transition: var(--transition);
    cursor: pointer;
}

.sidebar-item.active,
.sidebar-item:hover {
    background-color: var(--primary-color);
    color: var(--text-light);
}

.preview-main {
    flex: 1;
    padding: 20px;
}

.stats-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
}

.stat-card {
    padding: 20px;
    border-radius: var(--border-radius);
    text-align: center;
    color: white;
}

.stat-card.blue { background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); }
.stat-card.green { background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%); }
.stat-card.orange { background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%); }

.stat-number {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 5px;
}

.stat-label {
    font-size: 0.8rem;
    opacity: 0.9;
}

/* Section Styles */
section {
    padding: 80px 0;
    overflow-x: hidden;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Features Section */
.features {
    background-color: var(--bg-gray);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    color: white;
    font-size: 2rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Tech Stack Section */
.tech-stack {
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary-dark) 100%);
    color: var(--text-light);
}

.tech-stack .section-title,
.tech-stack .section-subtitle {
    color: var(--text-light);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

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

.tech-category h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--accent-color);
}

.tech-items {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.tech-item {
    background: rgba(255, 255, 255, 0.1);
    padding: 12px 20px;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    transition: var(--transition);
    cursor: pointer;
}

.tech-item:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

/* About Section */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.7;
}

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

.stat {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

.about-features h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.feature-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.feature-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow);
}

.feature-item i {
    color: var(--primary-color);
    font-size: 1.2rem;
    min-width: 20px;
}

/* Login Section */
.demo {
    background-color: var(--bg-gray);
}

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

.login-card {
    background: var(--bg-light);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-hover);
    text-align: center;
    max-width: 500px;
    width: 100%;
}

.login-icon {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 2rem;
    color: white;
    font-size: 3rem;
}

.login-card h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.login-card p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.login-features {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
    text-align: left;
}

.login-feature {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.8rem;
    background: var(--bg-gray);
    border-radius: var(--border-radius);
}

.login-feature i {
    color: var(--primary-color);
    font-size: 1.2rem;
    min-width: 20px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
    width: 100%;
    justify-content: center;
}

/* Contact Section */
.contact {
    background: var(--text-primary);
    color: var(--text-light);
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-size: 1.1rem;
}

.contact-item i {
    color: var(--accent-color);
    font-size: 1.3rem;
}

/* Footer */
.footer {
    background: var(--bg-dark);
    color: var(--text-light);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer-tech {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-color);
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .nav-menu {
        gap: 1.5rem;
    }
    
    .login-btn {
        margin-left: 0.5rem;
        padding: 8px 14px;
        font-size: 0.9rem;
    }
    
    .container {
        padding: 0 30px;
    }
}

@media (max-width: 768px) {
    body {
        overflow-x: hidden;
    }
    
    .nav-container {
        padding: 0 15px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--bg-light);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow);
        padding: 2rem 0;
        z-index: 999;
        gap: 1rem;
    }

    .nav-menu.active {
        left: 0;
    }
    
    .nav-link {
        padding: 0.8rem 0;
        width: 100%;
    }
    
    .nav-menu .login-btn {
        margin: 1rem auto 0;
        width: 200px;
        justify-content: center;
    }

    .nav-toggle {
        display: flex;
        z-index: 1000;
        position: relative;
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
        padding: 0 15px;
        display: flex;
        flex-direction: column;
    }

    .hero-content h1 {
        font-size: 1.8rem;
        line-height: 1.3;
        margin-bottom: 1rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }

    .dashboard-preview {
        transform: none;
        max-width: 280px;
        margin: 0 auto;
        width: 100%;
    }
    
    .preview-content {
        height: 200px;
    }
    
    .hero-image {
        order: 2;
        margin-top: 1rem;
    }
    
    .hero-content {
        order: 1;
    }

    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
        gap: 1.5rem;
    }

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

    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

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

    .login-card {
        padding: 2rem;
    }

    .contact-info {
        flex-direction: column;
        gap: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        text-align: center;
        justify-content: center;
    }
}

@media (max-width: 640px) {
    .container {
        padding: 0 20px;
    }
    
    .hero-content h1 {
        font-size: 1.6rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .tech-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-content h1 {
        font-size: 1.4rem;
        margin-bottom: 0.8rem;
    }
    
    .hero-subtitle {
        font-size: 0.9rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
        gap: 0.8rem;
    }

    .btn {
        width: 100%;
        justify-content: center;
        min-height: 48px;
    }

    .section-title {
        font-size: 1.8rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }

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

    .about-stats {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .preview-content {
        flex-direction: column;
        height: auto;
    }

    .preview-sidebar {
        width: 100%;
        display: flex;
        overflow-x: auto;
        padding: 10px 0;
    }

    .sidebar-item {
        white-space: nowrap;
        min-width: 120px;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .feature-card h3 {
        font-size: 1.1rem;
    }
    
    .login-card {
        padding: 1.5rem;
    }
    
    .login-icon {
        width: 80px;
        height: 80px;
        font-size: 2.5rem;
    }
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.hero-content {
    animation: fadeInLeft 1s ease-out;
}

.hero-image {
    animation: fadeInRight 1s ease-out;
}

.feature-card {
    animation: fadeInUp 0.8s ease-out;
    animation-fill-mode: both;
}

.feature-card:nth-child(1) { animation-delay: 0.1s; }
.feature-card:nth-child(2) { animation-delay: 0.2s; }
.feature-card:nth-child(3) { animation-delay: 0.3s; }
.feature-card:nth-child(4) { animation-delay: 0.4s; }
.feature-card:nth-child(5) { animation-delay: 0.5s; }
.feature-card:nth-child(6) { animation-delay: 0.6s; }
.feature-card:nth-child(7) { animation-delay: 0.7s; }
.feature-card:nth-child(8) { animation-delay: 0.8s; }
.feature-card:nth-child(9) { animation-delay: 0.9s; }

/* Smooth Scrolling */
html {
    scroll-padding-top: 70px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

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

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

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