/* ==========================================================================
   PatternWorks Aviation - Modern Aviation Website Styles
   ========================================================================== */

/* CSS Custom Properties */
:root {
    /* Colors - Aviation-inspired palette */
    --color-navy: #0f1729;
    --color-navy-light: #1a2744;
    --color-slate: #2d3a4f;
    --color-steel: #4a5568;
    --color-sky: #3b82c4;
    --color-sky-light: #5ba3e0;
    --color-horizon: #f0f4f8;
    --color-white: #ffffff;
    --color-text: #1a1a2e;
    --color-text-muted: #64748b;
    --color-accent: #0ea5e9;
    --color-success: #10b981;

    /* Typography */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Source Sans 3', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Layout */
    --container-max: 1200px;
    --container-narrow: 800px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px 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);

    /* Border radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
}

/* ==========================================================================
   Reset & Base
   ========================================================================== */

*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    padding: var(--space-4xl) 0;
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: var(--color-sky-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-dark {
    background: var(--color-navy);
    color: var(--color-white);
}

.btn-dark:hover {
    background: var(--color-navy-light);
}

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

.btn-outline:hover {
    background: var(--color-horizon);
    border-color: var(--color-navy);
    color: var(--color-navy);
}

.apple-icon {
    width: 18px;
    height: 18px;
}

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

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--color-navy);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.125rem;
    color: var(--color-white);
}

.logo-icon {
    width: 28px;
    height: 28px;
    color: var(--color-white);
}

.nav-menu {
    display: flex;
    gap: var(--space-xl);
}

.nav-menu a {
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.8);
    transition: color var(--transition-fast);
}

.nav-menu a:hover {
    color: var(--color-white);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-white);
    transition: all var(--transition-fast);
}

/* Mobile Navigation */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        gap: 0;
        background: var(--color-navy);
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
    }

    .nav-menu.active {
        max-height: 300px;
    }

    .nav-menu a {
        display: block;
        padding: var(--space-md) var(--space-lg);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }
}

/* ==========================================================================
   Header Banner
   ========================================================================== */

.hero {
    position: relative;
    display: flex;
    align-items: center;
    padding: calc(60px + var(--space-2xl)) var(--space-lg) var(--space-2xl);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-background img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center 40%;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.92) 0%,
        rgba(255, 255, 255, 0.82) 50%,
        rgba(255, 255, 255, 0.5) 100%
    );
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
}

.hero h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 700;
    color: var(--color-navy);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.hero-accent {
    background: linear-gradient(135deg, var(--color-sky) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-slate);
    margin-bottom: var(--space-lg);
    max-width: 480px;
}

@media (max-width: 768px) {
    .hero {
        padding-top: calc(56px + var(--space-xl));
        padding-bottom: var(--space-xl);
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .hero-overlay {
        background: linear-gradient(
            180deg,
            rgba(255, 255, 255, 0.95) 0%,
            rgba(255, 255, 255, 0.85) 60%,
            rgba(255, 255, 255, 0.65) 100%
        );
    }
}

/* ==========================================================================
   Section Headers
   ========================================================================== */

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

.section-header h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    color: var(--color-navy);
    margin-bottom: var(--space-sm);
}

.section-header p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Apps Section
   ========================================================================== */

.apps-section {
    background: var(--color-horizon);
}

/* ==========================================================================
   App Card
   ========================================================================== */

.app-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    background: var(--color-white);
    border-radius: var(--radius-xl);
    padding: var(--space-3xl);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 968px) {
    .app-card {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
        padding: var(--space-xl);
    }
}

.app-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.app-icon {
    width: 64px;
    height: 64px;
    flex-shrink: 0;
}

.app-icon svg {
    width: 100%;
    height: 100%;
}

.app-title-group h3 {
    font-size: 1.5rem;
    color: var(--color-navy);
    margin-bottom: var(--space-xs);
}

.app-tagline {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.app-description {
    font-size: 1.0625rem;
    color: var(--color-steel);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

/* Features */
.app-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.feature {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--color-horizon);
    border-radius: var(--radius-md);
}

.feature-icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    color: var(--color-sky);
}

.feature strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-navy);
    margin-bottom: 2px;
}

.feature span {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* App CTA */
.app-cta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

/* ==========================================================================
   Phone Carousel
   ========================================================================== */

.app-card-gallery {
    display: flex;
    align-items: center;
    justify-content: center;
}

.phone-carousel {
    width: 100%;
    max-width: 320px;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    border-radius: var(--radius-lg);
}

.carousel-track {
    display: flex;
    transition: transform var(--transition-slow);
}

.carousel-slide {
    flex: 0 0 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    opacity: 0;
    transition: opacity var(--transition-slow);
}

.carousel-slide.active {
    opacity: 1;
}

.phone-frame {
    position: relative;
    width: 260px;
    padding: 12px;
    background: var(--color-navy);
    border-radius: 36px;
    box-shadow: var(--shadow-xl);
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: var(--color-navy);
    border-radius: 0 0 16px 16px;
    z-index: 10;
}

.phone-frame img {
    width: 100%;
    border-radius: 24px;
    display: block;
}

.slide-caption {
    margin-top: var(--space-md);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-steel);
    text-align: center;
}

/* Carousel Controls */
.carousel-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-lg);
    margin-top: var(--space-lg);
}

.carousel-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border: 1px solid var(--color-horizon);
    border-radius: var(--radius-full);
    color: var(--color-steel);
    transition: all var(--transition-fast);
}

.carousel-btn:hover {
    background: var(--color-horizon);
    color: var(--color-navy);
    border-color: var(--color-steel);
}

.carousel-btn svg {
    width: 20px;
    height: 20px;
}

.carousel-dots {
    display: flex;
    gap: var(--space-sm);
}

.dot {
    width: 8px;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--color-horizon);
    border: 1px solid var(--color-steel);
    transition: all var(--transition-fast);
}

.dot.active {
    background: var(--color-sky);
    border-color: var(--color-sky);
    transform: scale(1.2);
}

.dot:hover {
    background: var(--color-steel);
    border-color: var(--color-steel);
}

/* ==========================================================================
   Coming Soon Card
   ========================================================================== */

.coming-soon-card {
    margin-top: var(--space-2xl);
    padding: var(--space-2xl);
    background: var(--color-white);
    border: 2px dashed var(--color-steel);
    border-radius: var(--radius-xl);
    opacity: 0.7;
}

.coming-soon-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.coming-soon-icon {
    width: 48px;
    height: 48px;
    color: var(--color-steel);
    margin-bottom: var(--space-md);
}

.coming-soon-content h4 {
    font-size: 1.125rem;
    color: var(--color-navy);
    margin-bottom: var(--space-xs);
}

.coming-soon-content p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   About Section
   ========================================================================== */

.about-section {
    background: var(--color-white);
}

.about-section .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4xl);
    align-items: start;
}

@media (max-width: 868px) {
    .about-section .container {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }
}

.about-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    color: var(--color-navy);
    margin-bottom: var(--space-lg);
}

.about-content p {
    font-size: 1.0625rem;
    color: var(--color-steel);
    margin-bottom: var(--space-md);
    line-height: 1.7;
}

.about-values {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.value-item {
    position: relative;
    padding-left: var(--space-3xl);
}

.value-number {
    position: absolute;
    left: 0;
    top: 0;
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--color-sky);
    letter-spacing: 0.05em;
}

.value-item h4 {
    font-size: 1.0625rem;
    color: var(--color-navy);
    margin-bottom: var(--space-xs);
}

.value-item p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */

.contact-section {
    background: var(--color-navy);
    color: var(--color-white);
}

.contact-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.contact-content h2 {
    font-size: clamp(1.75rem, 3vw, 2.25rem);
    margin-bottom: var(--space-md);
}

.contact-content p {
    font-size: 1.0625rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: var(--space-xl);
}

.contact-email {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    font-size: 1.0625rem;
    transition: all var(--transition-fast);
}

.contact-email:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.contact-email svg {
    width: 20px;
    height: 20px;
    color: var(--color-sky-light);
}

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

.footer {
    background: var(--color-navy);
    color: var(--color-white);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-xl) 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-weight: 600;
}

.footer-brand .logo-icon {
    width: 24px;
    height: 24px;
    color: var(--color-white);
}

.footer-nav {
    display: flex;
    gap: var(--space-xl);
}

.footer-nav a {
    font-size: 0.9375rem;
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-fast);
}

.footer-nav a:hover {
    color: var(--color-white);
}

.footer-bottom {
    padding-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
    text-align: center;
}

@media (max-width: 600px) {
    .footer-content {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }

    .footer-nav {
        gap: var(--space-lg);
    }
}

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

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

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

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

    html {
        scroll-behavior: auto;
    }
}