/* === AMPLIA SOLUTIONS - DESIGN SYSTEM PREMIUM TIER-1 === */
/* Enterprise-grade CSS with accessibility, performance and visual excellence */

/* === CSS VARIABLES & DESIGN TOKENS === */
:root {
    /* === COLORS === */
    --primary-ia: #3182ce;
    --primary-dark: #1a365d;
    --primary-light: #90cdf4;
    --secondary: #38a169;
    --accent: #ed8936;
    
    /* === TEXT COLORS === */
    --text-primary: #1a202c;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-white: #ffffff;
    
    /* === BACKGROUNDS === */
    --bg-primary: #ffffff;
    --bg-secondary: #f7fafc;
    --bg-tertiary: #edf2f7;
    --bg-dark: #1a202c;
    
    /* === GRADIENTS === */
    --gradient-primary: linear-gradient(135deg, #1a365d 0%, #3182ce 100%);
    --gradient-secondary: linear-gradient(135deg, #38a169 0%, #48bb78 100%);
    --gradient-accent: linear-gradient(135deg, #ed8936 0%, #f6ad55 100%);
    --gradient-hero: linear-gradient(135deg, rgba(26, 54, 93, 0.95) 0%, rgba(49, 130, 206, 0.95) 100%);
    
    /* === TYPOGRAPHY === */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    
    /* === SPACING === */
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* === BORDER RADIUS === */
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    
    /* === SHADOWS === */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* === TRANSITIONS === */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* === Z-INDEX === */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: var(--font-family);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    padding-top: 80px; /* Compensar o header fixo */
}

/* === LAYOUT & CONTAINERS === */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    width: 100%;
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
}

/* === HEADER & NAVIGATION === */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
    z-index: var(--z-fixed);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    padding: var(--space-sm) 0;
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-lg);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 700;
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo-text {
    font-size: var(--text-xl);
    font-weight: 900;
    letter-spacing: -0.025em;
    color: var(--primary-dark);
}

.logo-text .ia {
    color: var(--primary-ia);
}

.logo-tagline {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-muted);
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 600;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
    position: relative;
    font-size: var(--text-base);
}

.nav-menu a:hover {
    color: var(--primary-ia);
    background-color: var(--bg-secondary);
}

.nav-menu a.active {
    color: var(--primary-ia);
    font-weight: 700;
}

/* === BUTTONS === */
.btn,
.btn-primary,
.btn-secondary,
.btn-cta-large {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border: none;
    border-radius: var(--radius-lg);
    font-family: var(--font-family);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--text-white);
    box-shadow: var(--shadow-md);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left var(--transition-slow);
}

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

.btn-primary:hover::before {
    left: 100%;
}

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

.btn-secondary:hover {
    background: var(--primary-ia);
    color: var(--text-white);
    transform: translateY(-2px);
}

.btn-cta-large {
    background: var(--gradient-accent);
    color: var(--text-white);
    font-size: var(--text-lg);
    padding: var(--space-lg) var(--space-2xl);
    box-shadow: var(--shadow-xl);
}

.btn-cta-large:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2xl);
}

/* === HERO SECTION === */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    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 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="0.5"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: var(--text-white);
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-2xl);
    font-size: var(--text-sm);
    font-weight: 600;
    margin-bottom: var(--space-2xl);
    transition: all var(--transition-fast);
}

.hero-badge:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.hero h1 {
    font-size: var(--text-5xl);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-xl);
    letter-spacing: -0.025em;
}

.text-gradient {
    background: linear-gradient(135deg, #90cdf4 0%, #ffffff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: var(--text-xl);
    opacity: 0.9;
    margin-bottom: var(--space-3xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    margin-bottom: var(--space-4xl);
    flex-wrap: wrap;
}

.hero-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
    max-width: 800px;
    margin: 0 auto;
}

.stat {
    text-align: center;
    padding: var(--space-lg);
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-fast);
}

.stat:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.stat-number {
    display: block;
    font-size: var(--text-3xl);
    font-weight: 900;
    color: var(--primary-light);
    margin-bottom: var(--space-sm);
}

.stat-label {
    font-size: var(--text-sm);
    opacity: 0.8;
    font-weight: 500;
}

/* === SECTIONS === */
.section {
    padding: var(--space-4xl) 0;
}

.section:nth-child(even) {
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-title {
    font-size: var(--text-4xl);
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: var(--space-lg);
    letter-spacing: -0.025em;
}

.section-subtitle {
    font-size: var(--text-xl);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === GRIDS === */
.grid {
    display: grid;
    gap: var(--space-xl);
    margin: var(--space-2xl) 0;
}

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

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

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

@media (max-width: 1200px) {
    .grid-4 {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 900px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Centralizar cards solitários na última linha */
.grid-3, .grid-4 {
    justify-items: center;
}
.grid-3 > .card, .grid-4 > .card, .contact-grid > .contact-card {
    width: 100%;
    max-width: 340px;
}

/* === CARDS === */
.card {
    background: var(--bg-primary);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(226, 232, 240, 0.8);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-2xl);
}

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

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-2xl);
    margin-bottom: var(--space-lg);
    transition: all var(--transition-normal);
}

.card:hover .card-icon {
    transform: scale(1.1) rotate(5deg);
}

.card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
    line-height: 1.7;
}

.card ul {
    list-style: none;
    margin-top: var(--space-lg);
}

.card li {
    padding: var(--space-sm) 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: var(--space-lg);
}

.card li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--secondary);
    font-weight: 700;
    background: rgba(56, 161, 105, 0.1);
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-xs);
}

/* === CALCULATOR SECTION === */
.calc-section {
    background: var(--gradient-primary);
    padding: var(--space-4xl) 0;
    position: relative;
}

.calc-container {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-2xl);
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.calc-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: var(--gradient-accent);
}

.calc-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.calc-icon {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-lg);
}

.calc-title {
    font-size: var(--text-3xl);
    font-weight: 900;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

.calc-desc {
    font-size: var(--text-lg);
    color: var(--text-secondary);
}

.calc-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.calc-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.calc-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: var(--text-sm);
}

.calc-input-group {
    display: flex;
    align-items: center;
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-fast);
}

.calc-input-group:focus-within {
    border-color: var(--primary-ia);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.calc-btn {
    background: var(--bg-tertiary);
    border: none;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calc-btn:hover {
    background: var(--primary-ia);
    color: var(--text-white);
}

.calc-btn:active {
    transform: scale(0.95);
}

.calc-input {
    flex: 1;
    border: none;
    padding: var(--space-md) var(--space-lg);
    font-size: var(--text-lg);
    font-weight: 600;
    text-align: center;
    background: transparent;
    outline: none;
}

.calc-result {
    text-align: center;
    padding: var(--space-2xl);
    background: var(--gradient-primary);
    border-radius: var(--radius-xl);
    color: var(--text-white);
    margin-bottom: var(--space-2xl);
    position: relative;
    overflow: hidden;
}

.calc-result::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
    animation: shimmer 2s infinite;
}

.calc-result-label {
    font-size: var(--text-sm);
    opacity: 0.9;
    margin-bottom: var(--space-sm);
    font-weight: 500;
}

.calc-result-value {
    font-size: var(--text-4xl);
    font-weight: 900;
    letter-spacing: -0.025em;
}

.calc-cta {
    width: 100%;
    background: var(--gradient-accent);
    color: var(--text-white);
    font-size: var(--text-lg);
    font-weight: 700;
    padding: var(--space-lg) var(--space-2xl);
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.calc-cta:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

.calc-error {
    background: #fed7d7;
    color: #c53030;
    padding: var(--space-md);
    border-radius: var(--radius-lg);
    margin-bottom: var(--space-lg);
    display: none;
    font-weight: 500;
}

/* === CONTACT SECTION === */
.contact-section {
    background: var(--gradient-primary);
    padding: var(--space-4xl) 0;
    position: relative;
}

.contact-section::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 0 100 100"><defs><pattern id="dots" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23dots)"/></svg>');
}

.contact-hero {
    text-align: center;
    color: var(--text-white);
    margin-bottom: var(--space-4xl);
}

.contact-hero h2 {
    font-size: var(--text-4xl);
    font-weight: 900;
    margin-bottom: var(--space-lg);
}

.contact-hero p {
    font-size: var(--text-xl);
    opacity: 0.9;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
    justify-content: center;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl) var(--space-xl);
    text-align: center;
    color: var(--text-white);
    transition: all var(--transition-normal);
    margin: 0 auto;
    min-width: 220px;
    max-width: 340px;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateY(-5px);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--text-3xl);
    margin: 0 auto var(--space-lg);
    transition: all var(--transition-normal);
}

.contact-card:hover .contact-icon {
    transform: scale(1.1) rotate(10deg);
}

.contact-card h3 {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.contact-card p {
    opacity: 0.8;
    margin-bottom: var(--space-lg);
    line-height: 1.6;
}

.contact-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--primary-light);
    text-decoration: none;
    font-weight: 600;
    padding: var(--space-sm) var(--space-lg);
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast);
}

.contact-link:hover {
    background: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

/* === FOOTER === */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: var(--space-4xl) 0 var(--space-2xl);
}

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

.footer h3 {
    font-size: var(--text-lg);
    font-weight: 700;
    margin-bottom: var(--space-lg);
    color: var(--primary-light);
}

.footer p {
    margin-bottom: var(--space-sm);
    opacity: 0.8;
    line-height: 1.6;
}

.footer a {
    color: var(--text-white);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-2xl);
    text-align: center;
    opacity: 0.7;
    font-size: var(--text-sm);
}

/* === ANIMATIONS === */
@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

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

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

/* === SCROLL ANCHOR OFFSET === */
section[id] {
    scroll-margin-top: 110px;
}

/* === MOBILE NAVIGATION === */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: var(--text-xl);
    cursor: pointer;
    padding: var(--space-sm);
    color: var(--text-primary);
}

@media (max-width: 900px) {
    .nav-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(255, 255, 255, 0.98);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: var(--space-2xl);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        box-shadow: var(--shadow-xl);
    }
    
    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-menu a {
        width: 100%;
        text-align: center;
        padding: var(--space-lg);
    }
}

@media (min-width: 901px) {
    .nav-toggle {
        display: none;
    }
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 768px) {
    :root {
        --space-4xl: 4rem;
        --space-3xl: 3rem;
        --space-2xl: 2rem;
    }
    
    .hero {
        min-height: 80vh;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn-primary,
    .btn-cta-large {
        width: 100%;
        max-width: 300px;
    }
    
    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
    
    .calc-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .card {
        padding: var(--space-xl);
    }
    
    .calc-container {
        padding: var(--space-2xl);
    }
}

/* === UTILITY CLASSES === */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-bold { font-weight: 700; }
.font-black { font-weight: 900; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: var(--text-white); }

.bg-primary { background-color: var(--bg-primary); }
.bg-secondary { background-color: var(--bg-secondary); }

.mb-0 { margin-bottom: 0; }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

/* === ACCESSIBILITY === */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* === FOCUS STYLES === */
* {
    outline: none;
}

html {
    scroll-behavior: smooth;
}

.btn,
.btn-primary,
.btn-secondary,
.btn-cta-large {
    outline: none;
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}