/* styles.css - Modern Corporate Design for Kelman Solutions */

/* Import modern fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Playfair+Display:wght@400;500;600;700&display=swap');

/* CSS Custom Properties for consistent theming */
:root {
    --primary-color: #1a365d;
    --primary-light: #2c5aa0;
    --primary-dark: #0f2439;
    --secondary-color: #2d3748;
    --accent-color: #3182ce;
    --accent-light: #63b3ed;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-light: #718096;
    --background-primary: #ffffff;
    --background-secondary: #f7fafc;
    --background-tertiary: #edf2f7;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    --gradient-accent: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-light) 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--background-secondary);
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography System */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 1.5rem;
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    width: 4rem;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    color: var(--primary-color);
}

p {
    margin-bottom: 1.25rem;
    color: var(--text-secondary);
    font-weight: 400;
}

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

/* Modern Navigation Bar */
.navbar {
    background: var(--background-primary);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    padding: 0.75rem 0;
}

/* Hero Section */
.hero-section {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
    padding: 4rem 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M30 30c0-11.046-8.954-20-20-20s-20 8.954-20 20 8.954 20 20 20 20-8.954 20-20zm0 0c0 11.046 8.954 20 20 20s20-8.954 20-20-8.954-20-20-20-20 8.954-20 20z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E") repeat;
    opacity: 0.1;
}

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

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
    line-height: 1.2;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    margin: 0;
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 0.01em;
    color: white;
}

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

.nav-brand {
    display: flex;
    align-items: center;
}

.nav-logo {
    height: 50px;
    width: auto;
    transition: all 0.3s ease;
}

.nav-logo:hover {
    transform: scale(1.02);
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.hamburger {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 2px;
}

.hamburger.active span:nth-child(1) {
    transform: rotate(-45deg) translate(-5px, 6px);
}

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

.hamburger.active span:nth-child(3) {
    transform: rotate(45deg) translate(-5px, -6px);
}

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

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    position: relative;
    padding: 0.5rem 1rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border-radius: 0.5rem;
}

.nav-menu a:hover {
    color: var(--accent-color);
    background: var(--background-tertiary);
    transform: translateY(-1px);
}

/* Enhanced Main Content */
main {
    background: var(--background-primary);
    margin: 2rem 0;
    border-radius: 1rem;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

main .container {
    padding: 3rem 2rem;
}

/* Beautiful Section Styling */
section {
    margin-bottom: 3rem;
    padding: 2rem 0;
}

section:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

/* Premium Solution Cards */
.solution {
    background: var(--background-primary);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.solution::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.solution:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
    border-color: var(--accent-light);
}

.solution:hover::before {
    transform: scaleX(1);
}

.solution h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-weight: 600;
}

.solution p {
    color: var(--text-secondary);
    line-height: 1.8;
}

.solution p:last-child {
    margin-bottom: 0;
}

/* Modern Footer */
footer {
    background: var(--gradient-primary);
    color: white;
    text-align: center;
    padding: 2rem 0;
    margin-top: 3rem;
    position: relative;
}

footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
}

footer p {
    margin: 0;
    opacity: 0.9;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    .container {
        padding: 0 1rem;
    }
    
    header {
        padding: 2.5rem 0;
    }
    
    .header-logo {
        max-height: 60px;
    }
    
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 72px;
        flex-direction: column;
        background-color: var(--background-primary);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        z-index: 1000;
        border-top: 1px solid var(--border-color);
        gap: 0;
        padding: 1rem 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu a {
        padding: 1rem 2rem;
        margin: 0.25rem 1rem;
        display: block;
        border-radius: 0.5rem;
        transition: all 0.2s ease;
    }
    
    .nav-menu a:hover {
        background: var(--background-secondary);
        color: var(--accent-color);
        transform: none;
    }
    
    main .container {
        padding: 2rem 1rem;
    }
    
    .solution {
        padding: 1.5rem;
    }
    
    section {
        padding: 1rem 0;
    }
}

@media (max-width: 480px) {
    h2::after {
        width: 2rem;
    }
    
    nav .container {
        flex-wrap: wrap;
    }
    
    .solution {
        padding: 1rem;
        margin-bottom: 1.5rem;
    }
}