/* ===================================
   CSS Variables & Reset
   =================================== */

:root {
    /* Colors - Warm & Professional Palette */
    --primary-orange: #FF6B35;
    --primary-coral: #F7931E;
    --secondary-dark: #3E2723;
    --secondary-brown: #5D4037;
    --accent-cream: #FFF8E1;
    --accent-beige: #F5F5DC;
    --bg-white: #FFFBF5;
    --text-dark: #2C1810;
    --text-gray: #6B5D58;
    --text-light: #8B7B77;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs: 0.875rem;
    --font-size-sm: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-2xl: 3rem;
    --font-size-3xl: 4rem;

    /* Effects */
    --border-radius: 12px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.07);
    --box-shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-sm);
    line-height: 1.7;
    color: var(--text-gray);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-dark);
    font-weight: 700;
    line-height: 1.2;
}

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

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

/* ===================================
   Container & Layout
   =================================== */

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

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

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 251, 245, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 107, 53, 0.1);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

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

.logo {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--primary-orange);
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-links a {
    color: var(--text-gray);
    font-weight: 500;
    font-size: var(--font-size-xs);
    transition: var(--transition);
}

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

.nav-cta {
    background: var(--primary-orange);
    color: white !important;
    padding: 0.6rem 1.5rem;
    border-radius: var(--border-radius);
    font-weight: 600;
}

.nav-cta:hover {
    background: var(--primary-coral);
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

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

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: var(--font-size-sm);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid transparent;
}

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

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

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

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

.btn-large {
    padding: 1.2rem 2.5rem;
    font-size: var(--font-size-md);
}

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

.hero {
    position: relative;
    padding: calc(var(--spacing-xl) + 4rem) 0 var(--spacing-xl) 0;
    overflow: hidden;
    background: linear-gradient(135deg, var(--accent-cream) 0%, var(--bg-white) 100%);
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    letter-spacing: -2px;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-gray);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.stat-number {
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--primary-orange);
    display: block;
}

.stat-label {
    font-size: var(--font-size-xs);
    color: var(--text-light);
    font-weight: 500;
}

.hero-decoration {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
    overflow: hidden;
    pointer-events: none;
}

.circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.08;
}

.circle-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-orange);
    top: -200px;
    right: -100px;
}

.circle-2 {
    width: 300px;
    height: 300px;
    background: var(--primary-coral);
    bottom: -100px;
    left: -50px;
}

.circle-3 {
    width: 200px;
    height: 200px;
    background: var(--secondary-brown);
    top: 50%;
    left: 10%;
}

/* ===================================
   Section Styles
   =================================== */

section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg) auto;
}

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    letter-spacing: -1px;
}

.section-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-gray);
}

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

.features {
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.feature-card {
    background: var(--bg-white);
    border: 2px solid rgba(255, 107, 53, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

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

.feature-icon {
    margin-bottom: var(--spacing-md);
}

.feature-icon svg {
    width: 48px;
    height: 48px;
}

.feature-title {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

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

/* ===================================
   How It Works Section
   =================================== */

.how-it-works {
    background: linear-gradient(135deg, var(--accent-cream) 0%, var(--bg-white) 100%);
}

.steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.step {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
}

.step-image {
    width: 100%;
    height: 300px;
    background: var(--accent-cream);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.step-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: var(--transition);
}

.step-image-placeholder {
    width: 100%;
    height: 300px;
    background: var(--accent-cream);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-box {
    width: 100px;
    height: 100px;
    background: rgba(255, 107, 53, 0.2);
    border-radius: 8px;
}

.step:hover .step-image img {
    transform: scale(1.05);
}

.step-content {
    padding: var(--spacing-lg);
}

.step-number-inline {
    color: var(--primary-orange);
    font-weight: 800;
}

.step-title {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.step-description {
    color: var(--text-gray);
    line-height: 1.7;
    font-size: var(--font-size-sm);
}

/* ===================================
   Integration Section
   =================================== */

.integrations {
    background: white;
}

.integration-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
    max-width: 1200px;
    margin: 0 auto;
}

.integration-image-simple {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow-lg);
    transition: var(--transition);
}

.integration-image-simple:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.integration-card {
    background: var(--bg-white);
    border: 2px solid rgba(255, 107, 53, 0.1);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: var(--transition);
}

.integration-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--box-shadow-lg);
    border-color: var(--primary-orange);
}

.integration-header {
    margin-bottom: var(--spacing-md);
}

.integration-header svg {
    margin-bottom: var(--spacing-sm);
}

.integration-title {
    font-size: var(--font-size-lg);
    color: var(--text-dark);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.integration-description {
    color: var(--text-gray);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.integration-image {
    margin-top: var(--spacing-md);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.integration-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: var(--transition);
}

.integration-card:hover .integration-image img {
    transform: scale(1.02);
}

.integration-logos {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.integration-logo {
    padding: 0.5rem 1rem;
    background: white;
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: 8px;
    font-size: var(--font-size-xs);
    color: var(--text-gray);
    font-weight: 500;
    transition: var(--transition);
}

.integration-logo:hover {
    border-color: var(--primary-orange);
    color: var(--primary-orange);
}

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

.cta-section {
    background: linear-gradient(135deg, var(--secondary-dark) 0%, var(--secondary-brown) 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-title {
    font-size: var(--font-size-2xl);
    color: white;
    margin-bottom: var(--spacing-sm);
    font-weight: 800;
}

.cta-subtitle {
    font-size: var(--font-size-md);
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: var(--spacing-lg);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.cta-note {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.7);
}

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

.footer {
    background: var(--secondary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.footer-content {
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.footer-brand {
    display: inline-block;
}

.footer-logo {
    font-size: var(--font-size-lg);
    font-weight: 800;
    color: var(--primary-orange);
    margin-bottom: var(--spacing-sm);
}

.footer-tagline {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
}

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

/* ===================================
   Animations
   =================================== */

.fade-in {
    opacity: 0;
    animation: fadeIn 0.8s ease-out forwards;
}

.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; }

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-up.visible {
    opacity: 1;
    transform: translateY(0);
}

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

@media (max-width: 768px) {
    :root {
        --font-size-3xl: 2.5rem;
        --font-size-2xl: 2rem;
        --font-size-xl: 1.5rem;
        --spacing-xl: 4rem;
        --spacing-lg: 3rem;
    }

    .nav-links {
        gap: var(--spacing-sm);
    }

    .nav-links a {
        font-size: 0.75rem;
    }

    .nav-cta {
        padding: 0.5rem 1rem;
    }

    .hero {
        padding: calc(var(--spacing-lg) + 3rem) 0 var(--spacing-lg) 0;
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-md);
    }

    .hero-cta {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 300px;
    }

    .hero-stats {
        gap: var(--spacing-md);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

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

    .step-image,
    .step-image-placeholder {
        height: 250px;
    }

    .integration-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }

    .nav-links a:not(.nav-cta) {
        display: none;
    }

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