/* ==========================================
   MepSketcher Website Styles
   Color Scheme from MepSketcher Application
   ========================================== */

/* CSS Variables - MepSketcher Color Palette */
:root {
    /* Primary Colors */
    --primary-color: #2979FF;
    --primary-light: #75A7FF;
    --primary-dark: #004ECB;
    --accent-color: #FF9100;
    
    /* Background Colors */
    --background-color: #F5F5F5;
    --card-background: #FFFFFF;
    
    /* Text Colors */
    --text-primary: #333333;
    --text-secondary: #666666;
    --text-light: #999999;
    
    /* Border Colors */
    --border-color: #DDDDDD;
    --border-light: #EEEEEE;
    
    /* Shadow */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.2);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
}

/* ========================================== */
/* Reset and Base Styles */
/* ========================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--background-color);
}

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

/* ========================================== */
/* Container */
/* ========================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ========================================== */
/* Navigation */
/* ========================================== */

.navbar {
    background-color: var(--card-background);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-text {
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(41, 121, 255, 0.1);
}

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

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

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 3px;
    transition: 0.3s;
}

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

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

h3 {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========================================== */
/* Buttons */
/* ========================================== */

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    text-align: center;
}

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

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

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

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

.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-xl) 0;
    margin-top: 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.hero-content {
    padding-right: var(--spacing-md);
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

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

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

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

.placeholder-image {
    background-color: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 8px;
    padding: var(--spacing-xl);
    text-align: center;
    width: 100%;
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero .placeholder-image {
    color: white;
    font-size: 1.2rem;
}

.placeholder-image p {
    color: inherit;
}

/* ========================================== */
/* About Section */
/* ========================================== */

.about {
    padding: var(--spacing-xl) 0;
    background-color: var(--card-background);
}

.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

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

.features {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-color);
}

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

.feature-card {
    background-color: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--primary-light);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.feature-title {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================== */
/* Screenshots Section */
/* ========================================== */

.screenshots {
    padding: var(--spacing-xl) 0;
    background-color: var(--card-background);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.screenshot-card {
    background-color: var(--background-color);
    padding: var(--spacing-sm);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
}

.screenshot-card .placeholder-image {
    background-color: var(--card-background);
    border: 2px dashed var(--border-color);
    color: var(--text-light);
    margin-bottom: var(--spacing-sm);
}

.screenshot-caption {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================== */
/* Use Cases Section */
/* ========================================== */

.use-cases {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-color);
}

.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.use-case-card {
    background-color: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--accent-color);
}

.use-case-card h3 {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.3rem;
}

.use-case-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ========================================== */
/* Getting Started Section */
/* ========================================== */

.getting-started {
    padding: var(--spacing-xl) 0;
    background-color: var(--card-background);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.step {
    display: flex;
    gap: var(--spacing-md);
}

.step-number {
    flex-shrink: 0;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
}

.step-content {
    flex: 1;
}

.step-title {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
}

.step-list {
    list-style-position: inside;
    color: var(--text-secondary);
    line-height: 1.8;
}

.step-list li {
    margin-bottom: 0.5rem;
}

/* ========================================== */
/* Technology Section */
/* ========================================== */

.technology {
    padding: var(--spacing-xl) 0;
    background-color: var(--background-color);
}

.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.tech-item {
    background-color: var(--card-background);
    padding: var(--spacing-lg);
    border-radius: 8px;
    text-align: center;
    box-shadow: var(--shadow-sm);
}

.tech-item h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.tech-item p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================== */
/* Download Section */
/* ========================================== */

.download {
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary-color) 100%);
    color: white;
    text-align: center;
}

.download .section-title {
    color: white;
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
}

.download-text {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
}

.download-buttons {
    margin-bottom: var(--spacing-md);
}

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

.download-buttons .btn-primary:hover {
    background-color: var(--background-color);
}

.download-version {
    color: rgba(255, 255, 255, 0.9);
    font-size: 0.95rem;
}

/* ========================================== */
/* Contact Section */
/* ========================================== */

.contact {
    padding: var(--spacing-xl) 0;
    background-color: var(--card-background);
    text-align: center;
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
}

.contact-text {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.contact-links {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
}

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

.footer {
    background-color: var(--text-primary);
    color: white;
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-section h3,
.footer-section h4 {
    color: var(--primary-light);
    margin-bottom: var(--spacing-sm);
}

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

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.9rem;
}

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

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

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

    .hamburger {
        display: flex;
    }

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

    .hero-content {
        padding-right: 0;
    }

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

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .hero-buttons .btn {
        width: 100%;
    }

    /* Section Title */
    .section-title {
        font-size: 2rem;
    }

    /* Features Grid */
    .features-grid {
        grid-template-columns: 1fr;
    }

    /* Steps */
    .steps {
        grid-template-columns: 1fr;
    }

    /* Contact Links */
    .contact-links {
        flex-direction: column;
    }

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

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.5rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .btn-large {
        padding: 0.875rem 1.5rem;
        font-size: 1rem;
    }
}