/* ===== CSS Variables ===== */

:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --secondary-color: #64748b;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --white-color: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --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);
}


/* ===== Base Styles ===== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-700);
    overflow-x: hidden;
}


/* ===== Typography ===== */

h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--dark-color);
    font-weight: 600;
    line-height: 1.2;
}

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

.section-description {
    font-size: 1.125rem;
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
}


/* ===== Common Classes ===== */

.section-padding {
    padding: 80px 0;
}


/* ===== Header ===== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(30, 41, 59, 0.98);
    box-shadow: var(--shadow-lg);
}

.navbar {
    padding: 1rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--white-color) !important;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.navbar-brand i {
    color: var(--primary-color);
    font-size: 1.75rem;
}

.navbar-nav .nav-link {
    color: var(--gray-300) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    padding: 0.5rem 1rem !important;
    border-radius: var(--border-radius-sm);
    transition: var(--transition);
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--white-color) !important;
    background: rgba(37, 99, 235, 0.1);
}

.navbar-nav .nav-link.btn {
    background: var(--primary-color);
    border: 1px solid var(--primary-color);
}

.navbar-nav .nav-link.btn:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    transform: translateY(-2px);
}


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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--dark-color) 0%, var(--gray-800) 100%);
    overflow: hidden;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white-color);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--gray-300);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-features {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 2.5rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--gray-300);
}

.feature-item i {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.btn-lg {
    padding: 0.875rem 2rem;
    font-size: 1.125rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    transition: var(--transition);
}

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

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

.btn-outline-light:hover {
    transform: translateY(-2px);
}


/* ===== Hero Image ===== */

.hero-image {
    position: relative;
    z-index: 2;
}

.dashboard-preview {
    background: var(--white-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    transform: perspective(1000px) rotateY(-5deg) rotateX(5deg);
    transition: var(--transition);
}

.dashboard-preview:hover {
    transform: perspective(1000px) rotateY(-2deg) rotateX(2deg);
}

.dashboard-header {
    background: var(--gray-100);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--gray-200);
}

.dashboard-controls {
    display: flex;
    gap: 0.5rem;
}

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

.control-btn.red {
    background: #ef4444;
}

.control-btn.yellow {
    background: #f59e0b;
}

.control-btn.green {
    background: #10b981;
}

.dashboard-title {
    font-weight: 600;
    color: var(--gray-700);
}

.dashboard-content {
    padding: 2rem 1.5rem;
}

.dashboard-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    background: var(--gray-50);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.stat-item:hover {
    background: var(--gray-100);
    transform: translateY(-2px);
}

.stat-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-item span {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--gray-600);
}


/* ===== Features Section ===== */

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

.feature-card {
    background: var(--white-color);
    padding: 2.5rem 2rem;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-100);
    text-align: center;
    transition: var(--transition);
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.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;
    position: relative;
}

.feature-icon::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border-radius: 50%;
    opacity: 0.2;
    filter: blur(8px);
}

.feature-icon i {
    font-size: 2rem;
    color: var(--white-color);
    position: relative;
    z-index: 1;
}

.feature-card h4 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.feature-card p {
    color: var(--gray-600);
    line-height: 1.6;
}


/* ===== Pricing Section ===== */

.pricing {
    background: var(--gray-50);
}

.pricing-card {
    background: var(--white-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    overflow: hidden;
    position: relative;
    height: 100%;
}

.pricing-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.pricing-card.featured {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg);
    transform: scale(1.05);
}

.pricing-card.featured:hover {
    transform: scale(1.05) translateY(-8px);
}

.pricing-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: var(--primary-color);
    color: var(--white-color);
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-bottom-left-radius: var(--border-radius);
}

.pricing-header {
    padding: 2rem 2rem 1rem;
    text-align: center;
    border-bottom: 1px solid var(--gray-100);
}

.pricing-header h4 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--dark-color);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.currency {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--gray-600);
}

.amount {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
}

.period {
    font-size: 1rem;
    font-weight: 500;
    color: var(--gray-600);
}

.pricing-features {
    padding: 2rem;
}

.pricing-features ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--gray-100);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features i {
    color: var(--success-color);
    font-size: 1rem;
    width: 16px;
    flex-shrink: 0;
}

.pricing-footer {
    padding: 0 2rem 2rem;
    margin-top: auto;
}


/* ===== CTA Section ===== */

.cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white-color);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><pattern id="dots" width="50" height="50" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="2" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23dots)"/></svg>');
}

.cta-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.cta-description {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.cta-buttons {
    position: relative;
    z-index: 1;
}


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

.footer {
    background: var(--dark-color);
    color: var(--gray-300);
    padding: 3rem 0 1rem;
}

.footer-widget {
    margin-bottom: 2rem;
}

.widget-title {
    color: var(--white-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
}

.widget-title i {
    color: var(--primary-color);
}

.widget-description {
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.social-links {
    display: flex;
    gap: 0.75rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

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

.widget-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.widget-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: var(--transition);
}

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

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.contact-item i {
    color: var(--primary-color);
    width: 20px;
    flex-shrink: 0;
}

.footer-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 2rem 0 1rem;
}

.copyright {
    margin: 0;
    color: var(--gray-400);
}

.footer-links {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

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

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


/* ===== Back to Top ===== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    transition: var(--transition);
    opacity: 0;
    visibility: hidden;
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-dark);
    transform: translateY(-3px);
}


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

@media (max-width: 1199.98px) {
    .hero-title {
        font-size: 3rem;
    }
    .section-title {
        font-size: 2.25rem;
    }
    .cta-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 991.98px) {
    .hero {
        text-align: center;
    }
    .hero-title {
        font-size: 2.5rem;
    }
    .dashboard-preview {
        transform: none;
        margin-top: 3rem;
    }
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    .pricing-card.featured {
        transform: none;
        margin-top: 2rem;
    }
    .pricing-card.featured:hover {
        transform: translateY(-8px);
    }
    .footer-links {
        justify-content: flex-start;
        margin-top: 1rem;
    }
}

@media (max-width: 767.98px) {
    .section-padding {
        padding: 60px 0;
    }
    .hero-title {
        font-size: 2rem;
    }
    .section-title {
        font-size: 2rem;
    }
    .cta-title {
        font-size: 2rem;
    }
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    .hero-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
    .cta-buttons {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        align-items: center;
    }
    .cta-buttons .btn {
        width: 100%;
        max-width: 300px;
    }
}

@media (max-width: 575.98px) {
    .feature-card,
    .pricing-card {
        margin-bottom: 2rem;
    }
    .pricing-header {
        padding: 1.5rem 1.5rem 1rem;
    }
    .pricing-features {
        padding: 1.5rem;
    }
    .pricing-footer {
        padding: 0 1.5rem 1.5rem;
    }
}


/* ===== Custom 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);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

.animate-fade-in-left {
    animation: fadeInLeft 0.6s ease-out;
}

.animate-fade-in-right {
    animation: fadeInRight 0.6s ease-out;
}


/* ===== Utilities ===== */

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