@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --primary: #0d7377;
    --primary-light: #14a085;
    --primary-dark: #0a5d61;
    --accent: #7dd3fc;
    --bg-dark: #0f172a;
    --bg-light: #f8fafc;
    --text-light: #64748b;
    --text-dark: #1e293b;
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-lg: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

/* Navigation - Mobile First */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 0.75rem 1rem;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(125, 211, 252, 0.2);
    z-index: 1000;
    transition: all 0.3s ease;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
}

.logo-icon {
    width: 35px;
    height: 35px;
    background: var(--gradient);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.nav-links {
    display: none;
    gap: 1rem;
    list-style: none;
    margin-bottom: 0;
}

.nav-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s ease;
    font-weight: 500;
    font-size: 0.9rem;
}

.nav-links a:hover {
    color: var(--accent);
}

/* Mobile menu toggle (you can add hamburger menu later) */
.mobile-menu-toggle {
    display: block;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

        /* Hero Section */
        .hero {
            min-height: 100vh;
            background: linear-gradient(135deg, var(--bg-dark) 0%, #1e293b 100%);
            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 xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000"><defs><radialGradient id="a" cx="50%" cy="50%" r="50%"><stop offset="0%" stop-color="%23ffffff" stop-opacity="0.1"/><stop offset="100%" stop-color="%23ffffff" stop-opacity="0"/></radialGradient></defs><circle cx="200" cy="200" r="100" fill="url(%23a)"/><circle cx="800" cy="300" r="150" fill="url(%23a)"/><circle cx="400" cy="700" r="80" fill="url(%23a)"/></svg>') no-repeat center;
            background-size: cover;
            opacity: 0.5;
        }
        
        .hero-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 2rem;
            position: relative;
            z-index: 2;
        }
        
        .hero-title {
            font-size: clamp(2.5rem, 6vw, 4.5rem);
            font-weight: 800;
            color: white;
            margin-bottom: 1.5rem;
            line-height: 1.1;
        }
        
        .hero-subtitle {
            font-size: clamp(1.5rem, 6vw, 3.5rem);
            color: var(--accent);
            margin-bottom: 1rem;
            font-weight: 300;
            font-style: italic;
        }
        
        .hero-description {
            font-size: 1.25rem;
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 2rem;
            max-width: 600px;
        }

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    background: var(--gradient);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    font-size: 0.9rem;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

/* Sections - Mobile First */
.about, .comparison, .contact {
    padding: 3rem 1rem;
    background: var(--bg-light);
}

.philosophy, .testimonials {
    padding: 3rem 1rem;
    background: var(--bg-dark);
    color: white;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    font-size: 1.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-dark);
    line-height: 1.2;
}

.section-subtitle {
    font-size: 1rem;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

/* Features Grid - Mobile First */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-card {
    background: white;
    padding: 1.5rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(125, 211, 252, 0.2);
}

.feature-card:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    color: white;
    font-size: 1.25rem;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-dark);
}

.feature-description {
    color: var(--text-light);
    line-height: 1.6;
    font-size: 0.9rem;
}

/* Philosophy Section - Mobile First */
.philosophy-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.philosophy-item {
    text-align: center;
}

.philosophy-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient);
    border-radius: 15px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
}

.philosophy-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    line-height: 1.3;
}

.benefits-list {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 1.5rem;
    backdrop-filter: blur(10px);
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.9rem;
    line-height: 1.5;
}

.benefit-item:last-child {
    border-bottom: none;
}

.benefit-icon {
    width: 35px;
    height: 35px;
    background: var(--accent);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-dark);
    font-weight: bold;
    font-size: 0.8rem;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

/* Comparison Section - Mobile First */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.comparison-column {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.comparison-header {
    padding: 1.5rem;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
}

.rfp-header {
    background: #ef4444;
    color: white;
}

.pb-header {
    background: var(--gradient);
    color: white;
}

.comparison-item {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    transition: background-color 0.3s ease;
    font-size: 0.9rem;
    line-height: 1.5;
}

.comparison-item:hover {
    background: rgba(125, 211, 252, 0.05);
}

.comparison-item:last-child {
    border-bottom: none;
}

/* Testimonials - Mobile First */
.testimonials-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin-top: 2rem;
}

.testimonial-card {
    background: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 15px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-3px);
}

.testimonial-text {
    color: rgba(255, 255, 255, 0.9);
    font-style: italic;
    margin-bottom: 1rem;
    line-height: 1.6;
    font-size: 0.9rem;
}

.testimonial-author {
    color: var(--accent);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Contact Section - Mobile First */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.download-section, .contact-section {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

.section-heading {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.input-group {
    margin-bottom: 1.25rem;
}

.input-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
    font-size: 0.9rem;
}

.input-field {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid rgba(125, 211, 252, 0.2);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.input-field:focus {
    outline: none;
    border-color: var(--primary);
}

.textarea-field {
    resize: vertical;
    min-height: 100px;
}

.submit-button {
    background: var(--gradient);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.submit-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    font-size: 0.9rem;
}

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

.file-list {
    background: rgba(125, 211, 252, 0.1);
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.file-item {
    color: var(--text-light);
    font-size: 0.8rem;
    margin-bottom: 0.5rem;
    word-break: break-word;
}

/* Success messages */
.success-message {
    background: #10b981;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    margin-top: 1rem;
    display: none;
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */

/* Small tablets and large phones (576px and up) */
@media (min-width: 576px) {
    .navbar {
        padding: 1rem 1.5rem;
    }
    
    .logo {
        font-size: 1.125rem;
        gap: 0.625rem;
    }
    
    .logo-icon {
        width: 38px;
        height: 38px;
    }
    
    .hero {
        padding: 6rem 1.5rem 4rem;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: clamp(1.5rem, 6vw, 3.5rem);
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .about, .comparison, .contact,
    .philosophy, .testimonials {
        padding: 4rem 1.5rem;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .features-grid {
        gap: 2rem;
    }
    
    .feature-card {
        padding: 2rem;
    }
    
    .feature-icon {
        width: 55px;
        height: 55px;
    }
    
    .philosophy-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
    
    .philosophy-icon {
        width: 70px;
        height: 70px;
    }
    
    .philosophy-title {
        font-size: 1.125rem;
    }
    
    .contact-grid {
        gap: 2.5rem;
    }
    
    .download-section, .contact-section {
        padding: 2.25rem;
    }
}

/* Tablets (768px and up) */
@media (min-width: 768px) {
    .navbar {
        padding: 1rem 2rem;
    }
    
    .logo {
        font-size: 1.25rem;
        gap: 0.75rem;
    }
    
    .logo-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
    }
    
    .nav-links {
        display: flex;
        gap: 1.5rem;
    }
    
    .nav-links a {
        font-size: 1rem;
    }
    
    .mobile-menu-toggle {
        display: none;
    }
    
    .hero {
        padding: 0 2rem;
    }
    
    .hero-content {
        text-align: left;
    }
    
    .hero-title {
        font-size: 3.5rem;
        margin-bottom: 1.5rem;
    }
    
    .hero-subtitle {
        font-size: clamp(1.5rem, 6vw, 3.5rem);
    }
    
    .hero-description {
        font-size: 1.25rem;
        max-width: 600px;
    }
    
    .cta-button {
        padding: 1rem 2rem;
        font-size: 1rem;
    }
    
    .about, .comparison, .contact,
    .philosophy, .testimonials {
        padding: 5rem 2rem;
    }
    
    .section-title {
        font-size: 2.75rem;
        margin-bottom: 2.5rem;
    }
    
    .section-subtitle {
        font-size: 1.125rem;
        margin-bottom: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        margin-bottom: 3rem;
    }
    
    .feature-icon {
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
        border-radius: 15px;
    }
    
    .feature-title {
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .feature-description {
        font-size: 1rem;
    }
    
    .philosophy-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
        margin-bottom: 3rem;
    }
    
    .philosophy-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
        border-radius: 20px;
        margin-bottom: 1.5rem;
    }
    
    .philosophy-title {
        font-size: 1.25rem;
        margin-bottom: 1rem;
    }
    
    .benefits-list {
        padding: 2rem;
        border-radius: 20px;
    }
    
    .benefit-item {
        font-size: 1rem;
        vertical-align:middle;
    }
    
    .benefit-icon {
        width: 40px;
        height: 40px;
        border-radius: 10px;
        font-size: 1rem;
    }
    
    .comparison-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        margin-top: 3rem;
    }
    
    .comparison-header {
        padding: 2rem;
        font-size: 1.5rem;
    }
    
    .comparison-item {
        padding: 1.5rem 2rem;
        font-size: 1rem;
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
        margin-top: 3rem;
    }
    
    .testimonial-card {
        padding: 2rem;
        border-radius: 20px;
    }
    
    .testimonial-text {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .testimonial-author {
        font-size: 1rem;
    }
    
    .contact-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
        margin-top: 3rem;
    }
    
    .download-section, .contact-section {
        padding: 2.5rem;
        border-radius: 20px;
    }
    
    .section-heading {
        font-size: 1.5rem;
    }
    
    .input-label {
        font-size: 1rem;
    }
    
    .input-field {
        padding: 0.75rem 1rem;
        border-radius: 10px;
    }
    
    .textarea-field {
        min-height: 120px;
    }
    
    .submit-button {
        border-radius: 10px;
        font-size: 1rem;
    }
    
    .contact-link {
        font-size: 1rem;
    }
    
    .file-list {
        border-radius: 10px;
    }
    
    .file-item {
        font-size: 0.9rem;
    }
    
    .success-message {
        border-radius: 10px;
        font-size: 1rem;
    }
}

/* Large tablets and small desktops (992px and up) */
@media (min-width: 992px) {
    .nav-links {
        gap: 2rem;
    }
    
    .hero-title {
        font-size: 4rem;
    }
    
    .about, .comparison, .contact,
    .philosophy, .testimonials {
        padding: 6rem 2rem;
    }
    
    .section-title {
        font-size: 3rem;
        margin-bottom: 3rem;
    }
    
    .section-subtitle {
        font-size: 1.25rem;
        margin-bottom: 4rem;
    }
    
    .features-grid {
        margin-bottom: 4rem;
    }s
    
    .philosophy-grid {
        grid-template-columns: repeat(4, 1fr);
        margin-bottom: 4rem;
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-grid {
        gap: 4rem;
    }
}

/* Large desktops (1200px and up) */
@media (min-width: 1200px) {
    .hero-title {
        font-size: 4.5rem;
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Extra large screens (1400px and up) */
@media (min-width: 1400px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3rem;
    }
    
    .testimonials-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2.5rem;
    }
}