/* 
 * NAERON - Professional Flight School Management System
 * Design inspired by aviationstack.com
 * Dark Theme & Corporate Aviation Style
 */

:root {
    /* Color Palette */
    --primary-dark: #2d3e50;
    --darker-bg: #1e2936;
    --accent-green: #00d084;
    --accent-green-hover: #00b872;
    --white: #ffffff;
    --text-dark: #2c3e50;
    --text-light: #6c7a89;
    --text-muted: #a0aab5;
    --border-color: #e8ecef;
    --light-bg: #f5f7fa;
    --error: #e74c3c;

    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #1e2936 0%, #2d3e50 100%);
    --gradient-overlay: linear-gradient(rgba(30, 41, 54, 0.9), rgba(45, 62, 80, 0.8));

    /* Typography */
    --font-main: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;

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

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

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px rgba(0, 208, 132, 0.3);
}

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

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

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

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

/* Typography Utilities */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2.5rem;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.25rem;
}

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

.text-right {
    text-align: right;
}

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

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

.text-accent {
    color: var(--accent-green);
}

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

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

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

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

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

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.grid {
    display: grid;
    gap: 2rem;
}

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

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

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

.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

.items-center {
    align-items: center;
}

.justify-between {
    justify-content: space-between;
}

.justify-center {
    justify-content: center;
}

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

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

/* Components */

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    font-weight: 600;
    font-size: 1rem;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-align: center;
}

.btn-primary {
    background-color: var(--accent-green);
    color: var(--white);
    box-shadow: 0 4px 14px rgba(0, 208, 132, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-green-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 208, 132, 0.4);
}

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

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

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

.btn-outline-dark:hover {
    background-color: var(--primary-dark);
    color: var(--white);
}

.btn-sm {
    padding: 0.5rem 1.2rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(30, 41, 54, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    height: 40px;
    width: auto;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    color: var(--text-muted);
    font-weight: 500;
    font-size: 0.95rem;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-green);
    transition: width 0.3s ease;
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-sm);
    padding: 2px;
    margin-left: 1rem;
}

.lang-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    padding: 4px 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 2px;
    transition: all 0.2s ease;
}

.lang-btn.active {
    background-color: var(--accent-green);
    color: var(--white);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.mobile-menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--white);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 700px;
    display: flex;
    align-items: center;
    background: var(--gradient-hero);
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../frontend/images/carousel/carousel001.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.08;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    color: var(--white);
    margin-bottom: 1.5rem;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    color: var(--text-muted);
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    animation: fadeInUp 0.8s ease-out 0.2s backwards;
}

.hero-cta {
    display: flex;
    justify-content: center;
    gap: 1rem;
    animation: fadeInUp 0.8s ease-out 0.4s backwards;
}

/* Sections */
.section {
    padding: var(--spacing-xl) 0;
}

.bg-gray {
    background-color: var(--light-bg);
}

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

/* Feature Cards */
.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-green);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background-color: rgba(0, 208, 132, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: var(--accent-green);
    font-size: 1.5rem;
}

.feature-title {
    color: var(--primary-dark);
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-light);
    font-size: 0.95rem;
}

/* Badges */
.badge-coming-soon {
    display: inline-block;
    background-color: rgba(0, 208, 132, 0.15);
    color: var(--accent-green);
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    font-weight: 700;
    margin-left: 8px;
    vertical-align: middle;
}

/* Stats Section */
.stats-section {
    background-color: var(--primary-dark);
    padding: var(--spacing-xl) 0;
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 1rem;
}

.stat-icon {
    font-size: 2.5rem;
    color: var(--accent-green);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    line-height: 1;
}

.stat-label {
    color: var(--text-muted);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* App Showcase (Why Naeron) */
.app-showcase {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 4rem;
}

.app-images {
    position: relative;
    height: 500px;
}

.app-img-laptop {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80%;
    z-index: 2;
}

.app-img-desktop {
    position: absolute;
    top: 10%;
    left: 0;
    width: 60%;
    z-index: 1;
    opacity: 0.8;
    filter: blur(1px);
}

.app-img-mobile {
    position: absolute;
    bottom: 0;
    right: 10%;
    width: 20%;
    z-index: 3;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

/* Feature List Items */
.feature-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-icon-sm {
    width: 40px;
    height: 40px;
    background-color: var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

/* Footer */
.footer {
    background-color: var(--darker-bg);
    color: var(--text-muted);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a:hover {
    color: var(--accent-green);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: var(--accent-green);
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    border-top: 4px solid var(--accent-green);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 9999;
    padding: 1.5rem 0;
    transition: bottom 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

.cookie-banner.show {
    bottom: 0;
}

.cookie-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .app-showcase {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .app-images {
        height: 400px;
        margin-bottom: 2rem;
    }

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

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .header-container {
        padding: 0 1.5rem;
    }

    .nav-links {
        display: none;
        /* Mobile menu implementation needed */
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }

}

.app-img-desktop {
    position: absolute;
    top: 10%;
    left: 0;
    width: 60%;
    z-index: 1;
    opacity: 0.8;
    filter: blur(1px);
}

.app-img-mobile {
    position: absolute;
    bottom: 0;
    right: 10%;
    width: 20%;
    z-index: 3;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.2));
}

/* Feature List Items */
.feature-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.feature-icon-sm {
    width: 40px;
    height: 40px;
    background-color: var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    flex-shrink: 0;
}

/* Footer */
.footer {
    background-color: var(--darker-bg);
    color: var(--text-muted);
    padding: 4rem 0 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h4 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.footer-links li {
    margin-bottom: 0.8rem;
}

.footer-links a:hover {
    color: var(--accent-green);
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.social-link {
    width: 36px;
    height: 36px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: var(--accent-green);
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 2rem;
    text-align: center;
    font-size: 0.9rem;
}

/* Cookie Banner */
.cookie-banner {
    position: fixed;
    bottom: -100%;
    left: 0;
    width: 100%;
    background-color: var(--white);
    border-top: 4px solid var(--accent-green);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.1);
    z-index: 9999;
    padding: 1.5rem 0;
    transition: bottom 0.5s cubic-bezier(0.19, 1, 0.22, 1);
}

.cookie-banner.show {
    bottom: 0;
}

.cookie-banner-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .app-showcase {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .app-images {
        height: 400px;
        margin-bottom: 2rem;
    }

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

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .header-container {
        padding: 0 1.5rem;
    }

    .nav-links {
        display: none;
        /* Mobile menu implementation needed */
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
    }
}

/* AI Button & Gradient Styles */
@keyframes aiButtonGradientMovement {
    0% {
        background-position: 0% 0%;
    }

    50% {
        background-position: 100% 100%;
    }

    100% {
        background-position: 0% 0%;
    }
}

@keyframes aiButtonStarAnimation {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

.ai-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: rgb(255, 255, 255);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    padding: 0.5rem 1.5rem;
    font-family: 'Inter', sans-serif;
    background: linear-gradient(45deg, rgb(122, 214, 255), rgb(0, 122, 255), rgb(255, 128, 171), rgb(179, 136, 255), rgb(76, 175, 80)) 0% 0% / 500% 500%;
    animation: aiButtonGradientMovement 5s ease infinite;
    border-radius: 50px;
    border: none;
    transition: transform 0.3s, box-shadow 0.3s;
    text-decoration: none;
}

.ai-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
    color: white;
}

.ai-button svg {
    margin-right: 8px;
    width: 20px;
    height: 20px;
    fill: rgb(255, 255, 255);
    animation: aiButtonStarAnimation 2s ease infinite;
}

.ai-text-gradient {
    background: linear-gradient(45deg, rgb(122, 214, 255), rgb(0, 122, 255), rgb(255, 128, 171), rgb(179, 136, 255), rgb(76, 175, 80)) 0% 0% / 500% 500%;
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    animation: aiButtonGradientMovement 5s ease infinite;
}

/* Hero Modifier for Secondary Pages */
.hero.hero-sm {
    height: 50vh;
    min-height: 400px;
}