/* Google Fonts - Montserrat */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;700;900&display=swap');
/* Google Fonts - Inter */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&display=swap');
/* Google Fonts - Source Sans Pro */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+Pro:ital,wght@0,300;0,400;1,400&display=swap');

/* CSS Variables - NG Airlines "Flowing Energy" Palette */
:root {
    /* Legacy palette — kept for reference */
    --vermelho-carmim: #8B2635;   /* RESERVED — logo bird symbol only */
    --dourado: #D4AF37;
    --cinza: #9B9B9B;
    --bege: #E8DCC8;

    /* Derived shades */
    --vermelho-escuro: #6B1D28;   /* legacy — avoid in layout */
    --vermelho-claro: #AB3646;    /* legacy — avoid in layout */
    --dourado-escuro: #B49230;
    --dourado-claro: #E4C557;
    --cinza-escuro: #6B6B6B;
    --cinza-claro: #CBCBCB;

    /* Flowing Energy — nova identidade NG */
    --energy-orange: #E07B2A;
    --energy-amber: #D4A017;
    --energy-gold: #C9A227;
    --graphite: #2C3A4A;
    --graphite-dark: #1C2B3A;
    --graphite-hover: #253344;
    --energy-gradient: linear-gradient(135deg, #E07B2A 0%, #D4A017 50%, #C9A227 100%);

    /* Semantic colors — Flowing Energy */
    --primary: var(--energy-orange);
    --secondary: var(--dourado);
    --text-primary: var(--graphite);
    --text-secondary: var(--cinza);
    --bg-light: var(--bege);
    --bg-white: #FFFFFF;

    /* Typography */
    --font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;

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

    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);

    /* Breakpoints (for reference in media queries) */
    --bp-mobile: 480px;
    --bp-tablet: 768px;
    --bp-desktop: 1024px;
    --bp-wide: 1440px;
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-white);
    overflow-x: hidden;
}

/* Fluid transitions between sections */
main > section {
    position: relative;
    border: none;
    overflow: visible;
    --section-bg-color: var(--bg-white);
}

.body-text {
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    line-height: 1.6;
}

.subtle {
    font-weight: 300;
    font-style: italic;
}

/* Skip Link for Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: var(--bg-white);
    padding: var(--spacing-sm);
    text-decoration: none;
    z-index: 100;
}

.skip-link:focus {
    top: 0;
}

/* Header with Glassmorphism */
header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(235, 220, 200, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: none;
    transition: all var(--transition-base);
    font-family: 'Inter', sans-serif;
}

.header-menu {
    font-family: 'Inter', sans-serif;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

header.scrolled {
    background: rgba(235, 220, 200, 0.95);
    box-shadow: 0 4px 20px rgba(44, 58, 74, 0.12);
}

nav {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0.5rem 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 65px;
}

.logo {
    height: 58px;
    transition: transform var(--transition-base);
    margin-right: 40px;
}

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

.nav-links {
    display: flex;
    gap: 0;
    list-style: none;
    align-items: center;
    margin-right: 40px;
}

.nav-links li {
    margin-right: 32px;
}

.nav-links li:last-child {
    margin-right: 0;
}

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 16px;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--secondary);
    transition: width var(--transition-base);
}

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

.nav-links a:hover::after {
    width: 100%;
}

.lang-selector {
    padding: 10px 16px;
    padding-right: 36px;
    border: 2px solid var(--primary);
    background: white;
    color: var(--primary);
    border-radius: 20px;
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.3s ease;
    outline: none;
    min-width: 75px;
    height: 40px;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.lang-selector:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(224, 123, 42, 0.25);
}

.lang-selector:focus {
    outline: 2px solid var(--secondary);
    outline-offset: 2px;
}

.lang-selector option {
    background: white;
    color: var(--primary);
    padding: 10px 12px;
    font-weight: 500;
    border: none;
}

.lang-selector option:checked,
.lang-selector option:hover {
    background: var(--primary);
    color: white;
}

/* Nav Login Form */
.nav-login-form {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-left: 0;
}

.nav-login-form .btn-login {
    padding: 12px 28px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.nav-login-form .btn-login:hover {
    background: var(--secondary);
    color: var(--bg-white);
}

/* Hero Section with Parallax */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--bg-white);
    overflow: hidden;
    font-family: 'Montserrat', sans-serif;
    --section-bg-color: var(--primary);
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('/img/206.jpg') center/cover no-repeat;
    transform: scale(1.1);
    transition: transform 0.5s ease-out;
}

.hero:hover .hero-bg {
    transform: scale(1.15);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg,
        rgba(28, 43, 58, 0.62) 0%,
        rgba(44, 58, 74, 0.58) 50%,
        rgba(28, 43, 58, 0.62) 100%);
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 900px;
    padding: var(--spacing-md);
    animation: fadeInUp 1s var(--transition-base);
}

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

.hero h1 {
    font-size: 3.25rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    line-height: 1.2;
}

.titulo {
    font-weight: 900;
    letter-spacing: 0.1em;
}

.hero p {
    font-size: 1.125rem;
    font-weight: 400;
    margin-bottom: 3.75rem;
    color: rgba(232, 220, 200, 0.95);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.6);
    line-height: 1.5;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.btn {
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 50px;
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-primary {
    background: linear-gradient(135deg, var(--dourado) 0%, var(--dourado-escuro) 100%);
    color: var(--graphite-dark);
    box-shadow: 0 8px 25px rgba(212, 175, 55, 0.4);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 12px 35px rgba(212, 175, 55, 0.6);
}

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

.btn-secondary:hover {
    background: var(--bg-white);
    color: var(--primary);
    transform: scale(1.05);
}

/* Countdown Section */
.countdown {
    background: linear-gradient(to bottom, 
        var(--bg-light) 0%, 
        var(--bg-light) 40%, 
        rgba(237, 227, 212, 0.98) 50%,
        rgba(235, 225, 210, 0.92) 60%,
        rgba(233, 222, 205, 0.82) 70%,
        rgba(232, 220, 200, 0.65) 78%, 
        rgba(232, 220, 200, 0.45) 84%,
        rgba(232, 220, 200, 0.25) 89%,
        rgba(232, 220, 200, 0.12) 94%, 
        rgba(232, 220, 200, 0.03) 97%,
        transparent 100%);
    padding: 5rem var(--spacing-md);
    padding-bottom: 5rem;
    text-align: center;
    margin-bottom: 3.75rem;
}

.countdown h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 2.5rem;
    letter-spacing: -0.01em;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.countdown-item {
    background: var(--bg-white);
    padding: 1.5rem 1.8rem;
    border-radius: 16px;
    min-width: 130px;
    box-shadow: 0 6px 20px rgba(224, 123, 42, 0.10);
    transition: all var(--transition-base);
}

.countdown-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(224, 123, 42, 0.18);
}

.countdown-value {
    display: block;
    font-size: 3rem;
    font-weight: 900;
    color: var(--primary);
    line-height: 1;
}

.countdown-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: var(--spacing-xs);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Inaugural Flight Section */
.inaugural {
    padding: var(--spacing-xl) var(--spacing-md);
    background: linear-gradient(135deg, var(--graphite-dark) 0%, var(--graphite) 60%, var(--graphite-hover) 100%);
    color: var(--bg-white);
    text-align: center;
    position: relative;
    overflow: hidden;
    --section-bg-color: var(--graphite-dark);
}

.inaugural::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(212, 175, 55, 0.1) 0%, transparent 70%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); opacity: 0.3; }
    50% { transform: scale(1.2); opacity: 0.6; }
}

.inaugural-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
}

.inaugural-year {
    font-size: 5rem;
    font-weight: 900;
    color: var(--dourado);
    text-shadow: 0 4px 20px rgba(212, 175, 55, 0.5);
    margin-bottom: var(--spacing-sm);
    line-height: 1;
}

.inaugural-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    color: var(--bg-white);
}

.inaugural-subtitle {
    font-size: 1.3rem;
    color: var(--bege);
    line-height: 1.6;
}

/* Why Section */
.why {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-white);
    --section-bg-color: var(--bg-white);
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.section-header h2 {
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.125rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.5;
}

.why-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.why-item {
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 12px;
    transition: all var(--transition-base);
    border: 2px solid transparent;
}

.why-item:hover {
    transform: translateY(-8px);
    border-color: var(--secondary);
    box-shadow: 0 12px 30px rgba(224, 123, 42, 0.15);
}

.why-item h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.why-item p {
    color: var(--text-secondary);
}

/* Fleet Section */
.fleet {
    padding: 5rem var(--spacing-md);
    background: linear-gradient(to bottom, 
        transparent 0%,
        rgba(232, 220, 200, 0.05) 6%,
        rgba(232, 220, 200, 0.12) 12%,
        rgba(232, 220, 200, 0.22) 18%,
        rgba(232, 220, 200, 0.35) 24%,
        rgba(232, 220, 200, 0.5) 30%,
        rgba(232, 220, 200, 0.65) 36%,
        rgba(232, 220, 200, 0.78) 42%,
        rgba(232, 220, 200, 0.9) 48%,
        var(--bege) 55%,
        rgba(240, 235, 225, 1) 65%,
        rgba(245, 240, 230, 1) 80%,
        var(--bg-white) 100%);
    --section-bg-color: var(--bege);
}

.fleet-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.875rem;
    max-width: 1400px;
    margin: 0 auto;
}

.fleet-card {
    position: relative;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.fleet-card:hover {
    transform: scale(1.03);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
}

.fleet-card img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    display: block;
}

/* Numbers Section */
.numbers {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--primary);
    color: var(--bg-white);
    --section-bg-color: var(--primary);
}

.numbers .section-header h2,
.numbers .section-header p {
    color: var(--bg-white);
}

.numbers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    max-width: 1400px;
    margin: 0 auto;
}

.number-card {
    text-align: center;
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.number-card:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-5px);
}

.number-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--dourado);
    margin-bottom: var(--spacing-xs);
}

.number-label {
    display: block;
    font-size: 0.95rem;
    color: var(--bege);
}

/* Timeline Section */
.timeline {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-white);
    --section-bg-color: var(--bg-white);
}

.timeline-container {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
}

.timeline-container::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--secondary);
    transform: translateX(-50%);
}

.timeline-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-content {
    width: 45%;
    background: var(--bg-light);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(44, 58, 74, 0.10);
}

.timeline-content h3 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-dot {
    width: 20px;
    height: 20px;
    background: var(--dourado);
    border: 4px solid var(--primary);
    border-radius: 50%;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

/* Newsletter Section */
.newsletter {
    padding: var(--spacing-xl) var(--spacing-md);
    background: var(--bg-light);
    text-align: center;
}

.newsletter-form {
    max-width: 600px;
    margin: var(--spacing-md) auto 0;
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    justify-content: center;
}

.newsletter-form input {
    flex: 1;
    min-width: 250px;
    padding: 1rem 1.5rem;
    border: 2px solid var(--cinza-claro);
    border-radius: 50px;
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

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

.newsletter-success {
    background: var(--dourado);
    color: var(--graphite-dark);
    padding: var(--spacing-sm);
    border-radius: 8px;
    margin-top: var(--spacing-sm);
}

.newsletter-error {
    background: var(--primary);
    color: var(--bg-white);
    padding: var(--spacing-sm);
    border-radius: 8px;
    margin-top: var(--spacing-sm);
}

/* Footer */
footer {
    background: var(--graphite-dark);
    color: var(--bg-white);
    padding: var(--spacing-lg) var(--spacing-md) var(--spacing-md);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-section h3 {
    color: var(--dourado);
    margin-bottom: var(--spacing-sm);
}

.footer-logo {
    height: 52px;
    width: auto;
    display: block;
    margin-bottom: var(--spacing-sm);
    filter: brightness(0) invert(1);
    transition: opacity var(--transition-fast);
}

.footer-logo:hover {
    opacity: 0.85;
}

.footer-section p,
.footer-section a {
    color: var(--bege);
    text-decoration: none;
    display: block;
    margin-bottom: var(--spacing-xs);
    transition: color var(--transition-fast);
}

.footer-section a:hover {
    color: var(--dourado);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(212, 175, 55, 0.3);
    color: var(--cinza-claro);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--primary);
    font-size: 1.8rem;
    cursor: pointer;
}

.login-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--primary);
    font-size: 1.4rem;
    cursor: pointer;
    margin-left: 10px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .fleet-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    .nav-links {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background: var(--bege);
        flex-direction: column;
        padding: var(--spacing-md);
        transition: left var(--transition-base);
        box-shadow: 4px 0 15px rgba(0, 0, 0, 0.1);
    }

    .nav-links.active {
        left: 0;
    }

    .nav-login-form {
        display: none;
        position: fixed;
        top: 70px;
        right: 0;
        width: 100%;
        background: var(--bege);
        padding: 15px;
        flex-direction: column;
        gap: 10px;
        box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        z-index: 999;
    }

    .nav-login-form.active {
        display: flex;
    }

    .nav-login-form input {
        width: 100%;
    }

    .login-toggle {
        display: block;
    }

    .hero h1 {
        font-size: 2.2rem;
    }

    .hero p {
        font-size: 1.1rem;
    }

    .section-header h2 {
        font-size: 2rem;
    }

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

    .timeline-container::before {
        left: 20px;
    }

    .timeline-item {
        flex-direction: column !important;
        align-items: flex-start;
        padding-left: 60px;
    }

    .timeline-content {
        width: 100%;
    }

    .timeline-dot {
        left: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .countdown-item {
        min-width: 80px;
    }

    .countdown-value {
        font-size: 2rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
}

/* Print Styles */
@media print {
    header {
        position: static;
    }

    .hero-bg {
        display: none;
    }

    .skip-link,
    .menu-toggle,
    .newsletter {
        display: none;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}