/**
 * Orbivantisin - Main Stylesheet
 * Using BEM methodology and mobile-first approach
 */

/* -------------------------------------------------------------------------- */
/*                               CSS Variables                                */
/* -------------------------------------------------------------------------- */
:root {
    /* Colors */
    --color-background: #F1F8E9;
    --color-accent: #8BC34A;
    --color-accent-light: #DCE775;
    --color-text: #2E2E2E;
    --color-text-light: #4E4E4E;
    --color-white: #FFFFFF;
    --color-gray-light: #F5F5F5;
    --color-gray: #E0E0E0;
    --color-gray-dark: #9E9E9E;
    --color-error: #D32F2F;
    --color-success: #388E3C;

    /* Typography */
    --font-family-heading: 'Amatic SC', cursive;
    --font-family-body: 'Merriweather', serif;
    --font-size-base: 1rem;
    --font-size-small: 0.875rem;
    --font-size-large: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --font-size-huge: 3rem;
    --font-weight-normal: 400;
    --font-weight-bold: 700;
    --line-height-base: 1.6;
    --line-height-heading: 1.2;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 5rem;

    /* Borders */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    --border-radius-circle: 50%;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --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-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Z-index layers */
    --z-index-dropdown: 100;
    --z-index-sticky: 200;
    --z-index-fixed: 300;
    --z-index-modal-backdrop: 400;
    --z-index-modal: 500;
    --z-index-popover: 600;
    --z-index-tooltip: 700;

    /* Container widths */
    --container-max-width: 1200px;
    --container-padding: var(--spacing-md);

    /* Breakpoints */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
}

/* Dark Mode Override */
@media (prefers-color-scheme: dark) {
    :root {
        --color-background: #263238;
        --color-accent: #7CB342;
        --color-accent-light: #AED581;
        --color-text: #ECEFF1;
        --color-text-light: #B0BEC5;
        --color-gray-light: #37474F;
        --color-gray: #455A64;
        --color-gray-dark: #607D8B;
        --color-white: #ECEFF1;
    }
}

/* -------------------------------------------------------------------------- */
/*                                  Reset                                     */
/* -------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
}

body {
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-base);
    min-height: 100vh;
    overflow-x: hidden;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition-normal);
}

a:hover, a:focus {
    color: var(--color-text);
    text-decoration: underline;
}

button {
    background: none;
    border: none;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
    padding: 0;
}

ul, ol {
    list-style: none;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-heading);
    margin-bottom: var(--spacing-md);
}

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

/* Utility Classes */
.no-scroll {
    overflow: hidden;
}

/* Accessibility */
.skip-link {
    background-color: var(--color-accent);
    color: var(--color-white);
    left: -9999px;
    padding: var(--spacing-sm) var(--spacing-md);
    position: absolute;
    top: var(--spacing-sm);
    z-index: var(--z-index-tooltip);
}

.skip-link:focus {
    left: var(--spacing-sm);
}

.sr-only {
    border: 0;
    clip: rect(0, 0, 0, 0);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
}

/* -------------------------------------------------------------------------- */
/*                                 Layout                                     */
/* -------------------------------------------------------------------------- */
.header__container,
.hero__container,
.about__container,
.benefits__container,
.gallery__container,
.testimonials__container,
.philosophy__container,
.faq__container,
.contact__container,
.page-content__container,
.success__container,
.footer__container {
    margin-left: auto;
    margin-right: auto;
    max-width: var(--container-max-width);
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
    width: 100%;
}

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

@media (min-width: 768px) {
    section {
        padding: var(--spacing-xxl) 0;
    }
}

/* -------------------------------------------------------------------------- */
/*                                 Header                                     */
/* -------------------------------------------------------------------------- */
.header {
    background-color: var(--color-background);
    box-shadow: var(--shadow-sm);
    padding: var(--spacing-md) 0;
    position: sticky;
    top: 0;
    transition: background-color var(--transition-normal);
    z-index: var(--z-index-sticky);
}

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

.header__logo {
    height: auto;
    max-height: 50px;
    width: auto;
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    height: 40px;
    padding: var(--spacing-sm);
    width: 40px;
    z-index: var(--z-index-dropdown);
}

.header__menu-icon {
    background-color: var(--color-text);
    height: 2px;
    position: relative;
    transition: background-color var(--transition-fast);
    width: 24px;
}

.header__menu-icon::before,
.header__menu-icon::after {
    background-color: var(--color-text);
    content: '';
    height: 2px;
    position: absolute;
    transition: transform var(--transition-fast);
    width: 24px;
}

.header__menu-icon::before {
    top: -8px;
}

.header__menu-icon::after {
    bottom: -8px;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon {
    background-color: transparent;
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon::before {
    transform: rotate(45deg) translate(5px, 5px);
}

.header__menu-toggle[aria-expanded="true"] .header__menu-icon::after {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Navigation */
.header__nav {
    background-color: var(--color-background);
    display: none;
    height: 100vh;
    left: 0;
    overflow-y: auto;
    padding: var(--spacing-xl) var(--spacing-md);
    position: fixed;
    top: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-normal);
    width: 100%;
    z-index: var(--z-index-fixed);
}

.header__nav--active {
    display: block;
    transform: translateX(0);
}

.header__nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.header__nav-link {
    color: var(--color-text);
    display: inline-block;
    font-size: var(--font-size-large);
    padding: var(--spacing-sm) 0;
    position: relative;
    text-decoration: none;
    transition: color var(--transition-normal);
}

.header__nav-link::after {
    background-color: var(--color-accent);
    bottom: 0;
    content: '';
    height: 2px;
    left: 0;
    position: absolute;
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform var(--transition-normal);
    width: 100%;
}

.header__nav-link:hover,
.header__nav-link:focus {
    color: var(--color-accent);
}

.header__nav-link:hover::after,
.header__nav-link:focus::after {
    transform: scaleX(1);
    transform-origin: bottom left;
}

@media (min-width: 992px) {
    .header__menu-toggle {
        display: none;
    }
    
    .header__nav {
        background-color: transparent;
        display: block;
        height: auto;
        overflow: visible;
        padding: 0;
        position: static;
        transform: none;
        width: auto;
    }
    
    .header__nav-list {
        flex-direction: row;
        gap: var(--spacing-md);
        margin-top: 0;
    }
    
    .header__nav-link {
        font-size: var(--font-size-base);
        padding: var(--spacing-sm) var(--spacing-sm);
    }
}

/* -------------------------------------------------------------------------- */
/*                               Hero Section                                 */
/* -------------------------------------------------------------------------- */
.hero {
    background: linear-gradient(135deg, var(--color-background), var(--color-accent-light) 70%);
}

.hero__container {
    align-items: center;
    display: flex;
    flex-direction: column;
    min-height: 80vh;
    padding: var(--spacing-xxl) var(--container-padding);
    position: relative;
    text-align: center;
}

.hero__content {
    max-width: 800px;
    padding: var(--spacing-lg) 0;
    position: relative;
    z-index: 1;
}

.hero__title {
    font-size: clamp(2.5rem, 8vw, var(--font-size-huge));
    margin-bottom: var(--spacing-md);
}

.hero__subtitle {
    font-size: clamp(var(--font-size-large), 4vw, var(--font-size-xl));
    margin-bottom: var(--spacing-lg);
}

.hero__button {
    background-color: var(--color-accent);
    border: 2px solid var(--color-accent);
    border-radius: var(--border-radius-md);
    color: var(--color-white);
    display: inline-block;
    font-size: var(--font-size-large);
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    transition: all var(--transition-normal);
}

.hero__button:hover,
.hero__button:focus {
    background-color: transparent;
    color: var(--color-accent);
    text-decoration: none;
}

.hero__image-container {
    margin-top: var(--spacing-lg);
    max-width: 500px;
    width: 100%;
}

.hero__image {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    height: auto;
    width: 100%;
}

@media (min-width: 992px) {
    .hero__container {
        flex-direction: row;
        text-align: left;
    }
    
    .hero__content {
        margin-right: var(--spacing-lg);
        padding: 0;
    }
    
    .hero__image-container {
        margin-top: 0;
    }
}

/* -------------------------------------------------------------------------- */
/*                              About Section                                 */
/* -------------------------------------------------------------------------- */
.about {
    background-color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.about__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.about__content {
    align-items: center;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.about__text {
    max-width: 600px;
}

.about__image-container {
    border-radius: var(--border-radius-lg);
    max-width: 500px;
    overflow: hidden;
}

.about__image {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal);
}

.about__image:hover {
    transform: scale(1.02);
}

@media (min-width: 992px) {
    .about__content {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .about__text {
        flex: 1;
        margin-right: var(--spacing-lg);
    }
    
    .about__image-container {
        flex: 1;
    }
}

/* -------------------------------------------------------------------------- */
/*                            Benefits Section                                */
/* -------------------------------------------------------------------------- */
.benefits {
    background-color: var(--color-background);
    padding: var(--spacing-xl) 0;
}

.benefits__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.benefits__item {
    align-items: center;
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing-xl);
}

.benefits__content {
    padding: var(--spacing-md);
    text-align: center;
}

.benefits__subtitle {
    color: var(--color-accent);
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.benefits__image-container {
    border-radius: var(--border-radius-lg);
    margin: var(--spacing-md) 0;
    max-width: 400px;
    overflow: hidden;
    width: 100%;
}

.benefits__image {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    height: auto;
    transition: transform var(--transition-normal);
    width: 100%;
}

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

@media (min-width: 992px) {
    .benefits__item {
        flex-direction: row;
        margin-bottom: var(--spacing-xxl);
    }
    
    .benefits__item--left .benefits__content {
        order: 2;
    }
    
    .benefits__item--left .benefits__image-container {
        order: 1;
    }
    
    .benefits__content {
        flex: 1;
        padding: var(--spacing-lg);
        text-align: left;
    }
    
    .benefits__item--right .benefits__content {
        padding-left: var(--spacing-xl);
    }
    
    .benefits__item--left .benefits__content {
        padding-right: var(--spacing-xl);
    }
    
    .benefits__image-container {
        flex: 1;
        margin: 0;
    }
}

/* -------------------------------------------------------------------------- */
/*                             Gallery Section                                */
/* -------------------------------------------------------------------------- */
.gallery {
    background-color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.gallery__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.gallery__grid {
    display: grid;
    gap: var(--spacing-md);
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.gallery__item {
    border-radius: var(--border-radius-md);
    cursor: pointer;
    overflow: hidden;
    position: relative;
}

.gallery__image {
    aspect-ratio: 1 / 1;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-normal);
    width: 100%;
}

.gallery__overlay {
    align-items: center;
    background: rgba(0, 0, 0, 0.5);
    bottom: 0;
    display: flex;
    justify-content: center;
    left: 0;
    opacity: 0;
    position: absolute;
    right: 0;
    top: 0;
    transition: opacity var(--transition-normal);
}

.gallery__item-title {
    color: var(--color-white);
    font-size: var(--font-size-xl);
    text-align: center;
}

.gallery__item:hover .gallery__image,
.gallery__item:focus-within .gallery__image {
    transform: scale(1.1);
}

.gallery__item:hover .gallery__overlay,
.gallery__item:focus-within .gallery__overlay {
    opacity: 1;
}

/* Item active state for JavaScript interaction */
.gallery__item--active .gallery__overlay {
    opacity: 1;
}

.gallery__item--active .gallery__image {
    transform: scale(1.1);
}

@media (min-width: 992px) {
    .gallery__grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* -------------------------------------------------------------------------- */
/*                          Testimonials Section                              */
/* -------------------------------------------------------------------------- */
.testimonials {
    background-color: var(--color-background);
    padding: var(--spacing-xl) 0;
}

.testimonials__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.testimonials__grid {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.testimonials__card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
    padding: var(--spacing-lg);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.testimonials__card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.testimonials__quote {
    font-style: italic;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.testimonials__author {
    display: flex;
    flex-direction: column;
}

.testimonials__name {
    color: var(--color-accent);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-xs);
}

.testimonials__location {
    color: var(--color-text-light);
    font-size: var(--font-size-small);
}

@media (min-width: 992px) {
    .testimonials__grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* -------------------------------------------------------------------------- */
/*                           Philosophy Section                               */
/* -------------------------------------------------------------------------- */
.philosophy {
    background: linear-gradient(to right, var(--color-accent-light), var(--color-accent));
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.philosophy__quote {
    font-size: var(--font-size-large);
    font-style: italic;
    margin: 0 auto;
    max-width: 800px;
}

.philosophy__author {
    display: block;
    font-size: var(--font-size-base);
    margin-top: var(--spacing-md);
}

/* -------------------------------------------------------------------------- */
/*                                FAQ Section                                 */
/* -------------------------------------------------------------------------- */
.faq {
    background-color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.faq__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.faq__list {
    margin: 0 auto;
    max-width: 800px;
}

.faq__item {
    border-bottom: 1px solid var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.faq__question {
    align-items: center;
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    font-family: var(--font-family-body);
    font-size: var(--font-size-large);
    font-weight: var(--font-weight-bold);
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    text-align: left;
    width: 100%;
}

.faq__icon {
    display: inline-block;
    height: 16px;
    position: relative;
    width: 16px;
}

.faq__icon::before,
.faq__icon::after {
    background-color: var(--color-accent);
    content: '';
    height: 2px;
    left: 0;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    transition: transform var(--transition-normal);
    width: 100%;
}

.faq__icon::after {
    transform: translateY(-50%) rotate(90deg);
}

.faq__question[aria-expanded="true"] .faq__icon::after {
    transform: translateY(-50%) rotate(0);
}

.faq__answer {
    max-height: 0;
    overflow: hidden;
    padding: 0;
}

.faq__answer p {
    margin-bottom: 0;
    padding: var(--spacing-md) 0;
}

.faq__question:hover,
.faq__question:focus {
    color: var(--color-accent);
}

.faq__question:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* -------------------------------------------------------------------------- */
/*                             Contact Section                                */
/* -------------------------------------------------------------------------- */
.contact {
    background-color: var(--color-background);
    padding: var(--spacing-xl) 0;
}

.contact__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.contact__content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin: 0 auto;
    max-width: 1000px;
}

.contact__info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact__info-item {
    align-items: center;
    display: flex;
    gap: var(--spacing-md);
}

.contact__info-item p {
    margin-bottom: 0;
}

.contact__icon {
    color: var(--color-accent);
    font-size: var(--font-size-xl);
}

.contact__form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact__form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact__label {
    color: var(--color-text);
    font-size: var(--font-size-base);
}

.contact__input,
.contact__textarea {
    background-color: var(--color-white);
    border: 1px solid var(--color-gray);
    border-radius: var(--border-radius-sm);
    color: var(--color-text);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    padding: var(--spacing-sm);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.contact__textarea {
    min-height: 150px;
    resize: vertical;
}

.contact__input:focus,
.contact__textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px rgba(139, 195, 74, 0.25);
    outline: none;
}

.contact__input--error,
.contact__textarea--error {
    border-color: var(--color-error);
}

.contact__error {
    color: var(--color-error);
    font-size: var(--font-size-small);
    min-height: 20px;
}

.contact__button {
    align-self: flex-start;
    background-color: var(--color-accent);
    border: none;
    border-radius: var(--border-radius-md);
    color: var(--color-white);
    cursor: pointer;
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-sm) var(--spacing-lg);
    transition: background-color var(--transition-normal);
}

.contact__button:hover,
.contact__button:focus {
    background-color: var(--color-text);
    outline: none;
}

@media (min-width: 768px) {
    .contact__content {
        flex-direction: row;
    }
    
    .contact__info {
        flex: 1;
    }
    
    .contact__form {
        flex: 2;
    }
}

/* -------------------------------------------------------------------------- */
/*                             Page Content                                   */
/* -------------------------------------------------------------------------- */
.page-content {
    background-color: var(--color-white);
    padding: var(--spacing-xl) 0;
}

.page-content__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.page-content__subtitle {
    color: var(--color-accent);
    font-size: var(--font-size-xl);
    margin: var(--spacing-lg) 0 var(--spacing-md);
}

.page-content__subtitle-small {
    font-size: var(--font-size-large);
    margin: var(--spacing-md) 0 var(--spacing-sm);
}

.page-content__text {
    margin: 0 auto;
    max-width: 800px;
}

.page-content__list {
    list-style-type: disc;
    margin-bottom: var(--spacing-md);
    margin-left: var(--spacing-lg);
}

.page-content__list li {
    margin-bottom: var(--spacing-xs);
}

/* -------------------------------------------------------------------------- */
/*                             Success Page                                   */
/* -------------------------------------------------------------------------- */
.success {
    align-items: center;
    background-color: var(--color-white);
    display: flex;
    justify-content: center;
    min-height: 60vh;
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.success__container {
    max-width: 600px;
    padding: var(--spacing-lg);
}

.success__icon {
    color: var(--color-success);
    font-size: 4rem;
    margin-bottom: var(--spacing-md);
}

.success__title {
    color: var(--color-success);
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-md);
}

.success__message {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-lg);
}

.success__redirect {
    color: var(--color-text-light);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
}

.success__button {
    background-color: var(--color-accent);
    border: none;
    border-radius: var(--border-radius-md);
    color: var(--color-white);
    display: inline-block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    transition: background-color var(--transition-normal);
}

.success__button:hover,
.success__button:focus {
    background-color: var(--color-text);
    color: var(--color-white);
    text-decoration: none;
}

/* -------------------------------------------------------------------------- */
/*                                 Footer                                     */
/* -------------------------------------------------------------------------- */
.footer {
    background-color: var(--color-text);
    color: var(--color-white);
    padding-top: var(--spacing-xl);
    position: relative;
}

.footer__container {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: 1fr;
    padding-bottom: var(--spacing-xl);
}

.footer__logo-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__logo {
    filter: brightness(0) invert(1);
    height: auto;
    max-height: 40px;
    width: auto;
}

.footer__tagline {
    color: var(--color-gray);
    font-size: var(--font-size-small);
    font-style: italic;
}

.footer__links {
    display: grid;
    gap: var(--spacing-lg);
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.footer__heading {
    color: var(--color-accent-light);
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-md);
}

.footer__list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer__link {
    color: var(--color-gray);
    transition: color var(--transition-normal);
}

.footer__link:hover,
.footer__link:focus {
    color: var(--color-white);
}

.footer__social {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer__social-icons {
    display: flex;
    gap: var(--spacing-md);
}

.footer__social-link {
    align-items: center;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-circle);
    color: var(--color-white);
    display: flex;
    height: 40px;
    justify-content: center;
    transition: background-color var(--transition-normal);
    width: 40px;
}

.footer__social-link:hover,
.footer__social-link:focus {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.footer__bottom {
    background-color: rgba(0, 0, 0, 0.2);
    padding: var(--spacing-md) 0;
    text-align: center;
}

.footer__copyright {
    color: var(--color-gray);
    font-size: var(--font-size-small);
    margin: 0;
}

/* Back to Top Button */
.back-to-top {
    align-items: center;
    background-color: var(--color-accent);
    border-radius: var(--border-radius-circle);
    bottom: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    color: var(--color-white);
    display: flex;
    height: 50px;
    justify-content: center;
    opacity: 0;
    position: fixed;
    right: var(--spacing-lg);
    transition: background-color var(--transition-normal), opacity var(--transition-normal), transform var(--transition-normal);
    transform: translateY(20px);
    visibility: hidden;
    width: 50px;
    z-index: var(--z-index-fixed);
}

.back-to-top--visible {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.back-to-top:hover,
.back-to-top:focus {
    background-color: var(--color-text);
    color: var(--color-white);
}

@media (min-width: 768px) {
    .footer__container {
        grid-template-columns: 1fr 1fr;
    }
}

/* -------------------------------------------------------------------------- */
/*                             Animations                                     */
/* -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: no-preference) {
    .animations-enabled .fade-in {
        opacity: 0;
        transform: translateY(20px);
        transition: opacity var(--transition-slow), transform var(--transition-slow);
    }
    
    .animations-enabled .fade-in-visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* -------------------------------------------------------------------------- */
/*                         Accessibility Enhancements                         */
/* -------------------------------------------------------------------------- */
/* High contrast focus styles */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus,
[tabindex]:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001s !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001s !important;
    }
}

/* Improve color contrast for dark mode */
@media (prefers-color-scheme: dark) {
    .contact__button,
    .hero__button,
    .success__button {
        background-color: var(--color-accent);
        color: var(--color-text);
    }
    
    .contact__button:hover,
    .hero__button:hover,
    .success__button:hover,
    .contact__button:focus,
    .hero__button:focus,
    .success__button:focus {
        background-color: var(--color-accent-light);
    }
}