/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #0064be;
    --primary-hover: #0056a3;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    
    --font-family-sans: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-sm: 0.875rem;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-bold: 600;
    
    --border-radius: 0.375rem;
    --border-radius-lg: 0.5rem;
    --box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --box-shadow-lg: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    
    --transition: all 0.3s ease;
}

body {
    font-family: var(--font-family-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: 1.5;
    color: var(--gray-800);
    background-color: var(--white);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: 0.5rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--gray-800);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    text-align: center;
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    line-height: 1.5;
}

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

.btn-primary:hover {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    color: var(--white);
    text-decoration: none;
}

.btn-secondary {
    color: var(--gray-800);
    background-color: transparent;
    border-color: var(--gray-400);
}

.btn-secondary:hover {
    background-color: var(--gray-100);
    color: var(--gray-800);
    text-decoration: none;
}

/* Header */
.header {
    background-color: var(--white);
    box-shadow: var(--box-shadow);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    color: var(--gray-800);
}

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

.logo-text {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

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

.nav-link {
    text-decoration: none;
    color: var(--gray-700);
    font-weight: var(--font-weight-normal);
    transition: var(--transition);
}

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

.btn-login {
    background-color: var(--primary-color);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius);
}

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

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

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--gray-800);
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #0056a3 100%);
    color: var(--white);
}

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

.hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero-description {
    font-size: var(--font-size-lg);
    margin-bottom: 2rem;
    opacity: 0.9;
}

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

.hero-buttons .btn-secondary {
    color: var(--white);
    border-color: var(--white);
}

.hero-buttons .btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
}

/* .hero-img removed - image placeholder no longer used */

/* Features Section */
.features {
    padding: 5rem 0;
    background-color: var(--gray-100);
}

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

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

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

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.feature-title {
    margin-bottom: 1rem;
    color: var(--gray-800);
}

.feature-description {
    color: var(--gray-600);
}

/* About Section */
.about {
    padding: 5rem 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.about-description {
    margin-bottom: 1.5rem;
    color: var(--gray-600);
    font-size: var(--font-size-lg);
}

.stats {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
}

/* Stats Grid Layout */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--box-shadow);
    border: 1px solid var(--gray-300);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 1rem;
}

.stat-card:hover {
    box-shadow: var(--box-shadow-lg);
    transform: translateY(-2px);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--white);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.stat-content {
    flex: 1;
    min-width: 0;
}

.stat-content h3 {
    margin: 0 0 0.5rem 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--gray-600);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.stat-value {
    margin: 0 0 0.5rem 0;
    font-size: 2rem;
    font-weight: 700;
    color: var(--gray-800);
    line-height: 1;
}

.stat-change {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    padding: 0.25rem 0.5rem;
    border-radius: var(--border-radius);
}

.stat-change.positive {
    color: var(--success-color);
    background-color: rgba(34, 197, 94, 0.1);
}

.stat-change.negative {
    color: var(--danger-color);
    background-color: rgba(239, 68, 68, 0.1);
}

.stat-change.neutral {
    color: var(--gray-600);
    background-color: var(--gray-100);
}

/* .about-img removed - image placeholder no longer used */

/* Contact Section */
.contact {
    padding: 5rem 0;
    background-color: var(--gray-100);
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
}

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

.contact-item i {
    font-size: 1.25rem;
    color: var(--primary-color);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

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

/* Form Styles */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: var(--font-weight-bold);
    color: var(--gray-800);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-400);
    border-radius: var(--border-radius);
    font-size: var(--font-size-base);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 100, 190, 0.25);
}

/* Footer */
.footer {
    background-color: var(--gray-800);
    color: var(--white);
    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 {
    margin-bottom: 1rem;
    color: var(--white);
}

.footer-description {
    color: var(--gray-400);
    margin-top: 1rem;
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--gray-400);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-700);
    color: var(--gray-400);
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--box-shadow);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-title {
        font-size: 2rem;
    }

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

    .contact-content {
        grid-template-columns: 1fr;
    }

    .stats {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .stat-card {
        padding: 1rem;
    }
    
    .stat-icon {
        width: 50px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .stat-value {
        font-size: 1.5rem;
    }

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

    .hero-buttons .btn {
        width: 200px;
    }
}