/* 
 * Main Stylesheet for Aeroptogli
 * 
 * Table of Contents:
 * 1. Variables
 * 2. Reset & Base Styles
 * 3. Typography
 * 4. Layout & Containers
 * 5. Header & Navigation
 * 6. Buttons
 * 7. Forms
 * 8. Homepage Sections
 * 9. Blog Styles
 * 10. Footer
 * 11. Helper Classes
 * 12. Media Queries
 */

/* =====================
   1. Variables
   ===================== */
:root {
    /* Colors */
    --primary: #4caf50;
    --primary-dark: #388e3c;
    --primary-light: #81c784;
    --secondary: #2196f3;
    --secondary-dark: #1976d2;
    --secondary-light: #64b5f6;
    --dark: #333333;
    --gray-dark: #555555;
    --gray: #777777;
    --gray-light: #eeeeee;
    --light: #f9f9f9;
    --white: #ffffff;
    --success: #4caf50;
    --warning: #ffc107;
    --danger: #f44336;
    --info: #00bcd4;

    /* Typography */
    --font-family: 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-size-base: 16px;
    --font-size-small: 14px;
    --font-size-large: 18px;
    --line-height-base: 1.6;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2.5rem;
    --spacing-xxl: 4rem;

    /* Border Radius */
    --border-radius-sm: 3px;
    --border-radius-md: 5px;
    --border-radius-lg: 10px;
    --border-radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container widths */
    --container-sm: 540px;
    --container-md: 768px;
    --container-lg: 992px;
    --container-xl: 1140px;
}

/* =====================
   2. Reset & Base Styles
   ===================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    font-family: var(--font-family);
    line-height: var(--line-height-base);
    color: var(--dark);
    background-color: var(--white);
    overflow-x: hidden;
}

img, svg {
    max-width: 100%;
    height: auto;
}

ul {
    list-style: none;
}

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

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

/* =====================
   3. Typography
   ===================== */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

h3 {
    font-size: 1.75rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

h4 {
    font-size: 1.5rem;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

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

strong {
    font-weight: 700;
}

small {
    font-size: var(--font-size-small);
}

/* =====================
   4. Layout & Containers
   ===================== */
.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

section {
    padding: var(--spacing-xxl) 0;
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -15px;
}

.center {
    text-align: center;
}

/* =====================
   5. Header & Navigation
   ===================== */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: var(--white);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    z-index: 1000;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
}

.logo a {
    color: var(--dark);
    display: flex;
    align-items: center;
}

.logo h1 {
    margin-bottom: 0;
    font-size: 1.5rem;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: var(--spacing-lg);
}

nav ul li a {
    color: var(--gray-dark);
    position: relative;
    padding: var(--spacing-xs) 0;
}

nav ul li a:hover,
nav ul li a.active {
    color: var(--primary);
}

nav ul li a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 0;
    background-color: var(--primary);
    transition: width var(--transition-base);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.menu-toggle span {
    height: 3px;
    width: 100%;
    background-color: var(--dark);
    border-radius: 3px;
    transition: all var(--transition-base);
}

/* =====================
   6. Buttons
   ===================== */
.btn {
    display: inline-block;
    font-weight: 600;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    padding: 0.5rem 1.25rem;
    font-size: 1rem;
    line-height: 1.5;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-base);
    cursor: pointer;
    margin-right: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

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

.btn:focus {
    outline: none;
}

.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

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

.btn-secondary {
    background-color: var(--secondary);
    border-color: var(--secondary);
    color: var(--white);
}

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

.btn-outline {
    background-color: transparent;
    border-color: var(--gray);
    color: var(--gray-dark);
}

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

/* =====================
   7. Forms
   ===================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--dark);
    background-color: var(--white);
    background-clip: padding-box;
    border: 1px solid var(--gray-light);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    border-color: var(--primary-light);
    outline: 0;
    box-shadow: 0 0 0 0.2rem rgba(76, 175, 80, 0.25);
}

.form-group.checkbox {
    display: flex;
    align-items: flex-start;
}

.form-group.checkbox input {
    width: auto;
    margin-right: var(--spacing-sm);
    margin-top: 0.3rem;
}

.form-group.checkbox label {
    font-weight: 400;
    margin-bottom: 0;
}

.form-row {
    display: flex;
    margin-left: -10px;
    margin-right: -10px;
}

.form-row .form-group {
    flex: 1;
    padding: 0 10px;
}

/* Newsletter Form Specific */
.newsletter .form-group {
    display: flex;
    margin-bottom: var(--spacing-md);
}

.newsletter input[type="email"] {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
}

.newsletter button {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin: 0;
}

/* =====================
   8. Homepage Sections
   ===================== */

/* Banner Section */
.banner {
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: var(--white);
    padding: 10rem 0 6rem;
    text-align: center;
}

.banner h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.banner p {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
}

/* About Section */
.about {
    background-color: var(--light);
}

.about-content {
    display: flex;
    margin-bottom: var(--spacing-xl);
}

.about-text {
    flex: 1;
    padding-right: var(--spacing-lg);
}

.about-image {
    flex: 1;
}

.key-stats {
    display: flex;
    justify-content: space-between;
    text-align: center;
}

.stat {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    margin: 0 var(--spacing-sm);
}

.stat h3 {
    color: var(--primary);
    font-size: 2.5rem;
    margin-bottom: var(--spacing-xs);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.service-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    text-align: center;
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.service-icon {
    margin-bottom: var(--spacing-md);
    color: var(--primary);
}

.service-card h3 {
    margin-bottom: var(--spacing-sm);
}

/* Projects Section */
.projects {
    background-color: var(--light);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

.project-info {
    padding: var(--spacing-lg);
}

.project-info h3 {
    margin-bottom: var(--spacing-sm);
}

/* Testimonials Section */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

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

.testimonial-content p {
    font-style: italic;
    position: relative;
    padding: 0 var(--spacing-sm);
}

.testimonial-content p::before,
.testimonial-content p::after {
    content: '"';
    font-size: 1.5rem;
    color: var(--primary-light);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    margin-right: var(--spacing-md);
    overflow: hidden;
    background-color: var(--primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-weight: 700;
}

.avatar-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-info h4 {
    margin: 0;
    font-size: 1rem;
}

.author-info p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--gray);
}

/* Newsletter Section */
.newsletter {
    background-color: var(--primary);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-xl) 0;
}

.newsletter h2 {
    margin-top: 0;
}

.newsletter p {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.newsletter form {
    max-width: 500px;
    margin: var(--spacing-lg) auto 0;
}

.newsletter .checkbox label {
    color: var(--white);
}

/* Contact Section */
.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.contact-info {
    flex: 1;
    min-width: 300px;
}

.contact-form {
    flex: 2;
    min-width: 300px;
}

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

.info-item svg {
    margin-right: var(--spacing-md);
    margin-top: var(--spacing-xs);
    color: var(--primary);
}

.info-item h4 {
    margin: 0 0 var(--spacing-xs);
}

.info-item p {
    margin: 0;
}

/* Social Media Section */
.social-media {
    background-color: var(--light);
    text-align: center;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--white);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background-color: var(--primary);
    color: var(--white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-md);
}

/* =====================
   9. Blog Styles
   ===================== */
/* Blog Header */
.blog-header {
    background-color: var(--primary);
    color: var(--white);
    padding: 8rem 0 4rem;
    text-align: center;
}

.blog-header h1 {
    margin-bottom: var(--spacing-md);
}

.blog-header p {
    max-width: 700px;
    margin: 0 auto;
    font-size: 1.2rem;
}

/* Blog Grid */
.blog-grid {
    padding: var(--spacing-xl) 0;
}

.posts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.blog-card {
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    background-color: var(--white);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.blog-image {
    height: 200px;
    overflow: hidden;
}

.blog-content {
    padding: var(--spacing-lg);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.blog-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--gray);
}

.blog-content h2,
.blog-content h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
}

.blog-content p {
    margin-bottom: var(--spacing-lg);
}

.blog-content .btn {
    margin-top: auto;
    align-self: flex-start;
}

/* Blog Newsletter */
.blog-newsletter {
    margin-top: var(--spacing-xl);
}

/* Blog Post */
.blog-post {
    padding: 8rem 0 var(--spacing-xl);
}

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

.post-meta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
    color: var(--gray);
}

.post-author {
    display: flex;
    align-items: center;
    margin-top: var(--spacing-lg);
}

.post-image {
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.post-image .image-placeholder {
    height: 400px;
}

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

.post-content h2 {
    border-bottom: 1px solid var(--gray-light);
    padding-bottom: var(--spacing-sm);
}

.post-content ul,
.post-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.post-content ul li,
.post-content ol li {
    margin-bottom: var(--spacing-sm);
}

.post-content ul {
    list-style-type: disc;
}

.post-content ol {
    list-style-type: decimal;
}

.formula {
    background-color: var(--light);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    text-align: center;
    font-style: italic;
}

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

.post-share h3 {
    margin-bottom: var(--spacing-md);
}

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

.related-posts {
    background-color: var(--light);
    padding: var(--spacing-xl) 0;
}

.related-posts h2 {
    margin-top: 0;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

/* Legal Pages */
.legal-page {
    padding: 8rem 0 var(--spacing-xl);
}

.legal-page h1 {
    margin-bottom: var(--spacing-sm);
}

.last-updated {
    color: var(--gray);
    margin-bottom: var(--spacing-xl);
    font-size: 0.9rem;
}

.legal-content h2 {
    border-bottom: 1px solid var(--gray-light);
    padding-bottom: var(--spacing-sm);
}

.legal-content ul,
.legal-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.legal-content ul li,
.legal-content ol li {
    margin-bottom: var(--spacing-sm);
}

.legal-content ul {
    list-style-type: disc;
}

.legal-content ol {
    list-style-type: decimal;
}

/* Thank You Page */
.thank-you {
    text-align: center;
    padding: 10rem 0 6rem;
}

.thank-you svg {
    margin-bottom: var(--spacing-lg);
}

.thank-you h2 {
    margin-top: 0;
}

.thank-you .btn {
    margin-top: var(--spacing-lg);
}

/* Image Placeholders */
.image-placeholder {
    background-color: var(--gray-light);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--gray);
    padding: var(--spacing-lg);
    text-align: center;
}

.image-placeholder svg {
    margin-bottom: var(--spacing-md);
    color: var(--gray);
}

/* =====================
   10. Footer
   ===================== */
footer {
    background-color: var(--dark);
    color: var(--light);
    padding: var(--spacing-xl) 0 var(--spacing-md);
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    flex: 1.5;
    min-width: 200px;
}

.footer-logo h3 {
    margin-top: 0;
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.footer-links,
.footer-legal,
.footer-contact {
    flex: 1;
    min-width: 200px;
}

.footer-content h4 {
    color: var(--white);
    margin-top: 0;
    margin-bottom: var(--spacing-md);
    font-size: 1.2rem;
}

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

.footer-content a {
    color: var(--gray-light);
    transition: color var(--transition-fast);
}

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

.footer-contact p {
    margin-bottom: var(--spacing-sm);
}

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

.footer-bottom p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--gray);
}

/* =====================
   11. Helper Classes
   ===================== */
.text-center {
    text-align: center;
}

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

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

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

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

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

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

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

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

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: var(--spacing-sm);
}

.mb-2 {
    margin-bottom: var(--spacing-md);
}

.mb-3 {
    margin-bottom: var(--spacing-lg);
}

.mb-4 {
    margin-bottom: var(--spacing-xl);
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: var(--spacing-sm);
}

.mt-2 {
    margin-top: var(--spacing-md);
}

.mt-3 {
    margin-top: var(--spacing-lg);
}

.mt-4 {
    margin-top: var(--spacing-xl);
}

.w-100 {
    width: 100%;
}

.d-none {
    display: none;
}

.d-block {
    display: block;
}

.d-flex {
    display: flex;
}

/* =====================
   12. Media Queries
   ===================== */
@media (max-width: 992px) {
    html {
        font-size: 15px;
    }

    h1 {
        font-size: 2.2rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .about-content {
        flex-direction: column;
    }

    .about-text {
        padding-right: 0;
        margin-bottom: var(--spacing-lg);
    }

    .key-stats {
        flex-wrap: wrap;
    }

    .stat {
        flex: 1 0 45%;
        margin-bottom: var(--spacing-md);
    }

    .contact-content {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 250px;
        height: 100vh;
        background-color: var(--white);
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-base);
        padding: var(--spacing-xl) var(--spacing-lg);
        z-index: 1001;
    }

    nav.active {
        right: 0;
    }

    nav ul {
        flex-direction: column;
        margin-top: var(--spacing-xl);
    }

    nav ul li {
        margin: 0 0 var(--spacing-md);
    }

    .menu-toggle {
        display: flex;
        z-index: 1002;
    }

    .menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }

    .key-stats {
        flex-direction: column;
    }

    .stat {
        flex: 1 0 100%;
        margin-bottom: var(--spacing-md);
    }

    .form-row {
        flex-direction: column;
    }

    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }

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

    .container {
        padding: 0 var(--spacing-md);
    }

    .banner {
        padding: 8rem 0 4rem;
    }

    .banner h2 {
        font-size: 2rem;
    }

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

    .newsletter .form-group {
        flex-direction: column;
    }

    .newsletter input[type="email"] {
        border-radius: var(--border-radius-md);
        border-right: 1px solid var(--gray-light);
        margin-bottom: var(--spacing-sm);
    }

    .newsletter button {
        border-radius: var(--border-radius-md);
        width: 100%;
    }

    .blog-header {
        padding: 6rem 0 3rem;
    }

    .post-image .image-placeholder {
        height: 250px;
    }
}