/* ============================================
   UXFLOW.CLOUD - SAP Fiori Design System
   Inspirado em SAP.com e Fiori Guidelines
   ============================================ */

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

:root {
    /* SAP Color Palette */
    --primary-blue: #0070f2;
    --dark-blue: #0854a0;
    --light-blue: #d1efff;
    --gray-900: #1d2d3e;
    --gray-800: #2c3e50;
    --gray-700: #475569;
    --gray-600: #64748b;
    --gray-400: #94a3b8;
    --gray-200: #e2e8f0;
    --gray-100: #f8fafc;
    --white: #ffffff;
    --success: #0f7d40;
    --warning: #f59e0b;
    --accent: #00b8d4;
    
    /* Typography - SAP 72 Font Stack */
    --font-primary: '72', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 5rem;
    
    /* Shadows - SAP Style */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
    --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--gray-900);
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.02em;
}

h1 { font-size: var(--font-size-5xl); font-weight: 800; }
h2 { font-size: var(--font-size-4xl); font-weight: 700; }
h3 { font-size: var(--font-size-3xl); font-weight: 700; }
h4 { font-size: var(--font-size-2xl); font-weight: 600; }
h5 { font-size: var(--font-size-xl); font-weight: 600; }
h6 { font-size: var(--font-size-lg); font-weight: 600; }

p {
    margin-bottom: var(--spacing-md);
    color: var(--gray-700);
    line-height: 1.7;
}

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

a:hover {
    color: var(--dark-blue);
}

/* === CONTAINER === */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--spacing-xl);
}

.section {
    padding: var(--spacing-3xl) 0;
}

/* === GRID === */
.grid {
    display: grid;
    gap: var(--spacing-xl);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

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

/* === HEADER === */
.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg) 0;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--gray-900);
    letter-spacing: -0.02em;
}

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

.nav-link {
    color: var(--gray-700);
    font-weight: 500;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-blue);
    transition: width var(--transition-base);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-blue);
}

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

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-sm);
    font-weight: 600;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: all var(--transition-base);
    gap: var(--spacing-xs);
    white-space: nowrap;
}

.btn-primary {
    background-color: var(--primary-blue);
    color: var(--white);
    box-shadow: 0 2px 8px rgba(0, 112, 242, 0.2);
}

.btn-primary:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(0, 112, 242, 0.3);
}

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

.btn-secondary:hover {
    background-color: var(--light-blue);
}

.btn-outline {
    background-color: transparent;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
}

.btn-outline:hover {
    background-color: var(--gray-100);
    border-color: var(--primary-blue);
    color: var(--primary-blue);
}

.btn-lg {
    padding: 1.125rem 2.25rem;
    font-size: var(--font-size-base);
}

.btn-sm {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-xs);
}

/* === HERO === */
.hero {
    background: linear-gradient(135deg, #0a1628 0%, #0854a0 50%, #0070f2 100%);
    color: var(--white);
    padding: 6rem 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(0, 112, 242, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(0, 184, 212, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
}

.hero h1 {
    color: var(--white);
    margin-bottom: var(--spacing-xl);
    font-size: var(--font-size-5xl);
    line-height: 1.1;
}

.hero p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-2xl);
    line-height: 1.6;
}

/* === CARDS === */
.card {
    background-color: var(--white);
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: var(--spacing-xl);
    transition: all var(--transition-base);
    height: 100%;
}

.card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary-blue);
}

.card-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--light-blue) 0%, rgba(0, 112, 242, 0.1) 100%);
    color: var(--primary-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-size: var(--font-size-xl);
    color: var(--gray-900);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.card-text {
    color: var(--gray-600);
    font-size: var(--font-size-sm);
    line-height: 1.7;
}

/* === STATS === */
.stats {
    display: flex;
    justify-content: space-around;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--primary-blue);
    display: block;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--gray-600);
    font-weight: 500;
}

/* === FEATURES === */
.feature-list {
    list-style: none;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.feature-icon {
    width: 28px;
    height: 28px;
    background-color: var(--success);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: var(--font-size-sm);
    font-weight: 700;
}

.feature-content h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
    font-weight: 600;
}

.feature-content p {
    color: var(--gray-600);
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

/* === CTA === */
.cta {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: var(--spacing-3xl) 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: 
        radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.cta h2 {
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.cta p {
    color: rgba(255, 255, 255, 0.9);
    font-size: var(--font-size-lg);
}

/* === FOOTER === */
.footer {
    background-color: var(--gray-900);
    color: var(--gray-400);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-section h4 {
    color: var(--white);
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-lg);
    font-weight: 600;
}

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

.footer-links li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: var(--gray-400);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid var(--gray-700);
    padding-top: var(--spacing-lg);
    text-align: center;
    font-size: var(--font-size-sm);
}

/* === BADGES === */
.badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: 16px;
    letter-spacing: 0.02em;
}

.badge-primary {
    background-color: var(--light-blue);
    color: var(--primary-blue);
}

.badge-success {
    background-color: #d1fae5;
    color: var(--success);
}

.badge-warning {
    background-color: #fef3c7;
    color: var(--warning);
}

/* === UTILITIES === */
.text-center { text-align: center; }
.bg-gray { background-color: var(--gray-100); }

.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .grid-4 { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
    }
    
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .nav-menu {
        display: none;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .hero {
        padding: var(--spacing-3xl) 0;
    }
    
    .section {
        padding: var(--spacing-2xl) 0;
    }
    
    .stats {
        flex-direction: column;
    }
}

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