/**
 * Nuvandia - Mediterranean Diet Website
 * Main CSS file
 */

/* ==============================
   Variables
   ============================== */
:root {
    /* Colors */
    --color-bg: #FFF8E7;
    --color-accent: #4682B4;
    --color-text: #2F4F4F;
    --color-button: #20B2AA;
    --color-button-hover: #1a9994;
    --color-white: #ffffff;
    --color-light-gray: #f5f5f5;
    --color-medium-gray: #e0e0e0;
    --color-dark-gray: #707070;
    --color-overlay: rgba(47, 79, 79, 0.7);
    --color-success: #4CAF50;
    
    /* Typography */
    --font-primary: 'Playfair Display', serif;
    --font-secondary: 'Playfair Display', serif;
    --font-size-base: 16px;
    --font-size-small: 0.875rem;
    --font-size-medium: 1.125rem;
    --font-size-large: 1.5rem;
    --font-size-xl: 2rem;
    --font-size-xxl: 2.5rem;
    --font-size-xxxl: 3.5rem;
    --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: 4rem;
    --spacing-xxl: 6rem;
    
    /* Border Radius */
    --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);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Container */
    --container-width: 1200px;
    --container-padding: 1.5rem;
    
    /* Breakpoints */
    --breakpoint-xs: 480px;
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
}

/* ==============================
   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-primary);
    font-weight: 400;
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

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

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

a:hover {
    color: var(--color-button);
}

ul, ol {
    list-style: none;
}

button, input, textarea {
    font-family: inherit;
    font-size: inherit;
    color: inherit;
    border: none;
    background: none;
    outline: none;
}

button {
    cursor: pointer;
}

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

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

h1 {
    font-size: var(--font-size-xxxl);
}

h2 {
    font-size: var(--font-size-xxl);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-large);
}

h5 {
    font-size: var(--font-size-medium);
}

h6 {
    font-size: var(--font-size-base);
}

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

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    position: relative;
    padding-bottom: var(--spacing-md);
}

.section-title::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background-color: var(--color-button);
    border-radius: var(--border-radius-sm);
}

/* ==============================
   Buttons
   ============================== */
.button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    background-color: var(--color-button);
    color: var(--color-white);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    text-align: center;
    transition: all var(--transition-fast);
    border: 2px solid var(--color-button);
    box-shadow: var(--shadow-sm);
}

.button:hover {
    background-color: var(--color-button-hover);
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.button--outline {
    background-color: transparent;
    color: var(--color-button);
}

.button--outline:hover {
    background-color: var(--color-button);
    color: var(--color-white);
}

/* ==============================
   Layout & Container
   ============================== */
.header__container,
.footer__container,
.principles__container,
.meal-plan__container,
.ingredients__container,
.success-stories__container,
.recipes__container,
.faq__container,
.subscribe__container,
.contact__container,
.legal-page__container,
.success__container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ==============================
   Header
   ============================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background-color: var(--color-bg);
    padding: var(--spacing-md) 0;
    transition: all var(--transition-medium);
}

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

.header__logo-link {
    display: block;
}

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

.header__nav {
    display: flex;
    align-items: center;
}

.header__menu {
    display: flex;
    align-items: center;
}

.header__menu-item {
    margin-left: var(--spacing-md);
}

.header__menu-link {
    font-weight: 500;
    position: relative;
}

.header__menu-link::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-medium);
}

.header__menu-link:hover::after {
    width: 100%;
}

.header__menu-toggle {
    display: none;
    width: 30px;
    height: 24px;
    position: relative;
    z-index: 200;
}

.header__menu-icon,
.header__menu-icon::before,
.header__menu-icon::after {
    position: absolute;
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-medium);
}

.header__menu-icon {
    top: 50%;
    transform: translateY(-50%);
}

.header__menu-icon::before,
.header__menu-icon::after {
    content: "";
    left: 0;
}

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

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

.header__menu-toggle.is-active .header__menu-icon {
    background-color: transparent;
}

.header__menu-toggle.is-active .header__menu-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.header__menu-toggle.is-active .header__menu-icon::after {
    bottom: 0;
    transform: rotate(-45deg);
}

/* Sticky header styles */
.header.is-sticky {
    background-color: var(--color-bg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-sm) 0;
}

.header.is-hidden {
    transform: translateY(-100%);
}

/* ==============================
   Hero Section
   ============================== */
.hero {
    height: 100vh;
    min-height: 600px;
    background-image: url('../images/img01.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    position: relative;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--color-white);
}

.hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--color-overlay);
}

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

.hero__title {
    font-size: var(--font-size-xxxl);
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

.hero__subtitle {
    font-size: var(--font-size-large);
    margin-bottom: var(--spacing-xl);
    animation: fadeInUp 1s ease-out 0.3s;
    animation-fill-mode: both;
}

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

/* ==============================
   Principles Section
   ============================== */
.principles {
    background-color: var(--color-white);
    padding: var(--spacing-xxl) 0;
}

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

.principles__item {
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-medium);
    text-align: center;
}

.principles__item:hover {
    transform: translateY(-10px);
}

.principles__icon {
    font-size: 2.5rem;
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

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

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

/* ==============================
   Meal Plan Section
   ============================== */
.meal-plan {
    padding: var(--spacing-xxl) 0;
}

.meal-plan__content {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xl);
}

.meal-plan__text {
    flex: 1;
    min-width: 300px;
}

.meal-plan__benefits {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-lg);
}

.meal-plan__benefits li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.meal-plan__benefits li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

.meal-plan__image {
    flex: 1;
    min-width: 300px;
}

.meal-plan__img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    width: 100%;
}

/* ==============================
   Ingredients Section
   ============================== */
.ingredients {
    background-color: var(--color-white);
    padding: var(--spacing-xxl) 0;
}

.ingredients__gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--spacing-lg);
}

.ingredients__item {
    overflow: hidden;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    background-color: var(--color-bg);
}

.ingredients__image {
    height: 300px;
    overflow: hidden;
}

.ingredients__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.ingredients__item:hover .ingredients__img {
    transform: scale(1.05);
}

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

.ingredients__title {
    margin-bottom: var(--spacing-sm);
    color: var(--color-accent);
}

/* ==============================
   Success Stories Section
   ============================== */
.success-stories {
    padding: var(--spacing-xxl) 0;
}

.success-stories__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.success-stories__item {
    display: flex;
    flex-direction: column;
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-medium);
}

.success-stories__item:hover {
    transform: translateY(-10px);
}

.success-stories__image {
    height: 250px;
    overflow: hidden;
}

.success-stories__img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

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

.success-stories__name {
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.success-stories__text {
    font-style: italic;
    position: relative;
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--color-accent);
}

/* ==============================
   Recipes Section
   ============================== */
.recipes {
    background-color: var(--color-white);
    padding: var(--spacing-xxl) 0;
}

.recipes__masonry {
    position: relative;
    margin: 0 -10px;
    display: grid;
    gap: var(--spacing-lg);
}

@media (min-width: 768px) {
    .recipes__masonry {
        grid-template-columns: repeat(2, 1fr);
    }
}

.recipes__item {
    margin: 0;
    border-radius: var(--border-radius-md);
    overflow: hidden;
    position: relative;
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.recipes__img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform var(--transition-medium);
}

.recipes__overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--spacing-lg);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    color: var(--color-white);
    opacity: 0;
    transform: translateY(20px);
    transition: all var(--transition-medium);
}

.recipes__item.is-hovered .recipes__overlay,
.recipes__item:hover .recipes__overlay {
    opacity: 1;
    transform: translateY(0);
}

.recipes__item.is-hovered .recipes__img,
.recipes__item:hover .recipes__img {
    transform: scale(1.05);
}

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

/* ==============================
   FAQ Section
   ============================== */
.faq {
    padding: var(--spacing-xxl) 0;
}

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

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

.faq__question {
    width: 100%;
    text-align: left;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    font-weight: 600;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

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

.faq__question.is-active {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.faq__icon {
    transition: transform var(--transition-medium);
}

.faq__question.is-active .faq__icon {
    transform: rotate(180deg);
}

.faq__answer {
    background-color: var(--color-white);
    padding: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-medium), padding var(--transition-medium);
}

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

/* ==============================
   Subscribe Section
   ============================== */
.subscribe {
    background-color: var(--color-accent);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.subscribe .section-title {
    color: var(--color-white);
}

.subscribe .section-title::after {
    background-color: var(--color-white);
}

.subscribe__text {
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
}

.subscribe__form {
    max-width: 500px;
    margin: 0 auto;
}

.subscribe__input-group {
    display: flex;
    gap: var(--spacing-sm);
}

.subscribe__input {
    flex-grow: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--color-bg);
    color: var(--color-bg);
}

.subscribe__input::placeholder {
    color: rgba(255, 255, 255, 0.5);
}

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

.contact__content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

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

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

.contact__icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    margin-right: var(--spacing-md);
    flex-shrink: 0;
}

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

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

.contact__label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
}

.contact__input,
.contact__textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--color-medium-gray);
    border-radius: var(--border-radius-md);
    background-color: var(--color-white);
}

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

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

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

.footer__logo-link {
    display: block;
    text-align: center;
    margin-bottom: var(--spacing-xl);
}

.footer__logo {
    height: 60px;
    width: auto;
    filter: brightness(0) invert(1);
}

.footer__content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.footer__column {
    flex: 1;
    min-width: 200px;
}

.footer__title {
    color: var(--color-button);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-medium);
}

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

.footer__menu-link {
    color: var(--color-white);
    transition: color var(--transition-fast);
}

.footer__menu-link:hover {
    color: var(--color-button);
}

.footer__tips {
    list-style-type: disc;
    padding-left: var(--spacing-lg);
}

.footer__tip {
    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__copyright {
    font-size: var(--font-size-small);
    color: var(--color-medium-gray);
}

/* ==============================
   Back to Top Button
   ============================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-button);
    color: var(--color-white);
    border-radius: var(--border-radius-circle);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-medium);
    z-index: 90;
}

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

.back-to-top:hover {
    background-color: var(--color-button-hover);
    color: var(--color-white);
    transform: translateY(-5px);
}

/* ==============================
   Legal Pages
   ============================== */
.legal-page {
    padding: 120px 0 var(--spacing-xxl);
}

.legal-page__title {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.legal-page__section {
    margin-bottom: var(--spacing-xl);
    padding: 0;
}

.legal-page__subtitle {
    color: var(--color-accent);
    margin-bottom: var(--spacing-md);
}

.legal-page__tertiary {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.legal-page__list {
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.legal-page__list li {
    position: relative;
    padding-left: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.legal-page__list li::before {
    content: "•";
    position: absolute;
    left: -15px;
    color: var(--color-accent);
}

/* ==============================
   Success Page
   ============================== */
.success {
    padding: 120px 0 var(--spacing-xxl);
    min-height: calc(100vh - 100px);
    display: flex;
    align-items: center;
}

.success__container {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--spacing-xl);
}

.success__content {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.success__icon {
    font-size: 5rem;
    color: var(--color-button);
    margin-bottom: var(--spacing-lg);
}

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

.success__message {
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.success__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

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

.success__img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ==============================
   Responsive Styles
   ============================== */
@media (max-width: 991px) {
    :root {
        --font-size-xxxl: 3rem;
        --font-size-xxl: 2.25rem;
        --font-size-xl: 1.75rem;
    }
    
    /* Header */
    .header__menu-toggle {
        display: block;
    }
    
    .header__menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 350px;
        height: 100vh;
        background-color: var(--color-bg);
        flex-direction: column;
        align-items: flex-start;
        padding: 100px var(--spacing-lg) var(--spacing-lg);
        z-index: 90;
        box-shadow: var(--shadow-lg);
        transition: right var(--transition-medium);
    }
    
    .header__menu.is-active {
        right: 0;
    }
    
    .header__menu-item {
        margin-left: 0;
        margin-bottom: var(--spacing-lg);
        width: 100%;
    }
    
    .header__menu-link {
        display: block;
        font-size: var(--font-size-large);
    }
    
    body.menu-open {
        overflow: hidden;
    }
    
    /* Hero */
    .hero {
        background-attachment: scroll;
    }
}

@media (max-width: 767px) {
    :root {
        --font-size-xxxl: 2.5rem;
        --font-size-xxl: 2rem;
        --font-size-xl: 1.5rem;
        --spacing-xl: 3rem;
        --spacing-xxl: 4rem;
    }
    
    section {
        padding: var(--spacing-lg) 0;
    }
    
    .hero {
        min-height: 500px;
    }
    
    .success-stories__grid,
    .principles__grid,
    .ingredients__gallery {
        grid-template-columns: 1fr;
    }
    
    .meal-plan__content,
    .contact__content {
        flex-direction: column;
    }
    
    .subscribe__input-group {
        flex-direction: column;
    }
    
    .subscribe__input {
        margin-bottom: var(--spacing-sm);
    }
    
    .footer__content {
        flex-direction: column;
    }
    
    .footer__column {
        margin-bottom: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-xxxl: 2rem;
        --font-size-xxl: 1.75rem;
        --font-size-xl: 1.5rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .hero__title {
        margin-bottom: var(--spacing-sm);
    }
    
    .hero__subtitle {
        margin-bottom: var(--spacing-lg);
    }
    
    .section-title {
        margin-bottom: var(--spacing-lg);
    }
    
    .back-to-top {
        width: 40px;
        height: 40px;
        bottom: 20px;
        right: 20px;
    }
    
    .success__actions {
        flex-direction: column;
    }
}