/* ========================================
   NoAf Consulting Services - Main Stylesheet
   ======================================== */

/* === ROOT VARIABLES === */
:root {
    /* Primary Colors */
    --navy-blue: #0E2A47;
    --sustainable-green: #2E8B57;
    --white: #FFFFFF;
    
    /* Secondary Colors */
    --soft-gray: #F2F4F7;
    --aqua-blue: #4BA3C3;
    --charcoal: #333333;
    
    /* Additional Colors */
    --light-green: #3CB371;
    --dark-blue: #0A1F35;
    --border-gray: #E0E4E8;
    
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* === RESET & BASE === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    color: var(--charcoal);
    line-height: 1.6;
    background-color: var(--white);
    overflow-x: hidden;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--navy-blue);
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
    font-size: 1rem;
    line-height: 1.8;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

/* === HEADER & NAVIGATION === */
.header {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition-medium);
}

.header.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 80px;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: var(--transition-fast);
}

.logo-link:hover {
    opacity: 0.8;
}

.logo {
    height: 50px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    transition: var(--transition-fast);
    display: block;
}

.logo-text {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--navy-blue);
    display: none;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
    align-items: center;
}

.nav-link {
    color: var(--charcoal);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition-fast);
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--sustainable-green);
}

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

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 0.4rem;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 1001;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--navy-blue);
    border-radius: 2px;
    transition: var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(8px, 8px);
}

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

.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -7px);
}

/* === HERO SECTION === */
.hero {
    background: linear-gradient(135deg, var(--navy-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: var(--spacing-xl) 2rem;
    min-height: 600px;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="100" height="100" xmlns="http://www.w3.org/2000/svg"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.05)"/></svg>');
    background-size: 50px 50px;
    opacity: 0.3;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    color: var(--white);
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.hero-content .sub-headline {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

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

.hero-logo img {
    max-width: 100%;
    height: auto;
    max-height: 350px;
    filter: drop-shadow(0 10px 30px rgba(0, 0, 0, 0.3));
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    border: none;
    transition: var(--transition-fast);
    text-align: center;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--light-green);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(46, 139, 87, 0.3);
}

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

.btn-secondary:hover {
    background: var(--white);
    color: var(--navy-blue);
    transform: translateY(-2px);
}

/* === SECTIONS === */
.section {
    padding: var(--spacing-xl) 2rem;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    color: var(--charcoal);
    max-width: 800px;
    margin: 0 auto;
}

.section-bg-gray {
    background: var(--soft-gray);
}

/* === CARDS === */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: var(--transition-medium);
    border: 1px solid var(--border-gray);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--sustainable-green), var(--light-green));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    font-size: 1.5rem;
    color: var(--white);
}

.card h3 {
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.card p,
.card ul {
    color: var(--charcoal);
    line-height: 1.8;
}

.card ul {
    list-style: none;
    padding-left: 0;
}

.card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--sustainable-green);
    font-weight: bold;
}

/* === FOOTER === */
.footer {
    background: var(--navy-blue);
    color: var(--white);
    padding: 3rem 2rem 2rem;
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-logo-section {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    height: 60px;
    width: auto;
    max-width: 250px;
    object-fit: contain;
    display: block;
    /* Remove filter if logo has colors */
}

.footer-logo-section p {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.8;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

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

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

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--sustainable-green);
    padding-left: 5px;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
}

/* === FORMS === */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--navy-blue);
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--border-gray);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--sustainable-green);
    box-shadow: 0 0 0 3px rgba(46, 139, 87, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 150px;
}

/* === UTILITIES === */
.text-center { text-align: center; }
.text-green { color: var(--sustainable-green); }
.text-navy { color: var(--navy-blue); }

.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }

/* === SCROLL TO TOP === */
.scroll-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--sustainable-green);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-medium);
    box-shadow: 0 4px 15px rgba(46, 139, 87, 0.3);
    z-index: 999;
}

.scroll-to-top.visible {
    opacity: 1;
    pointer-events: all;
}

.scroll-to-top:hover {
    background: var(--light-green);
    transform: translateY(-5px);
}

/* === ANIMATIONS === */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease forwards;
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

/* === RESPONSIVE DESIGN === */
@media (max-width: 968px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 300px;
        height: 100vh;
        background: var(--white);
        flex-direction: column;
        padding: 6rem 2rem 2rem;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.1);
        transition: var(--transition-medium);
        gap: 1.5rem;
        align-items: flex-start;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-logo {
        order: -1;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}

@media (max-width: 640px) {
    .hero {
        padding: var(--spacing-md) 1rem;
    }
    
    .section {
        padding: var(--spacing-md) 1rem;
    }
    
    .nav-container {
        padding: 0 1rem;
    }
    
    .cta-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .logo {
        height: 40px;
    }
}