/* ==============================
   CSS Variables
   ============================== */
:root {
    /* Colors */
    --color-primary: #20B2AA;      /* Turquoise background */
    --color-accent: #FFEC8B;       /* Light yellow accent */
    --color-text: #FFFFFF;         /* White text */
    --color-button: #FFD700;       /* Gold button */
    --color-dark: #333333;         /* Dark text/backgrounds */
    --color-light: #F5F5F5;        /* Light backgrounds */
    --color-grey: #CCCCCC;         /* Grey elements */
    --color-overlay: rgba(0, 0, 0, 0.7); /* Dark overlay */
    
    /* Typography */
    --font-family: 'Fira Sans', sans-serif;
    --font-size-base: 1rem;        /* 16px */
    --font-size-sm: 0.875rem;      /* 14px */
    --font-size-md: 1.125rem;      /* 18px */
    --font-size-lg: 1.25rem;       /* 20px */
    --font-size-xl: 1.5rem;        /* 24px */
    --font-size-xxl: 2rem;         /* 32px */
    --font-size-xxxl: 2.5rem;      /* 40px */
    --font-weight-light: 300;
    --font-weight-regular: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-sm: 1.2;
    --line-height-base: 1.5;
    --line-height-lg: 1.8;
    
    /* Spacing */
    --space-xs: 0.25rem;           /* 4px */
    --space-sm: 0.5rem;            /* 8px */
    --space-md: 1rem;              /* 16px */
    --space-lg: 1.5rem;            /* 24px */
    --space-xl: 2rem;              /* 32px */
    --space-xxl: 3rem;             /* 48px */
    --space-xxxl: 4rem;            /* 64px */
    
    /* Borders */
    --border-radius-sm: 0.25rem;   /* 4px */
    --border-radius-md: 0.5rem;    /* 8px */
    --border-radius-lg: 1rem;      /* 16px */
    --border-radius-full: 9999px;
    
    /* 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);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Device Breakpoints */
    --breakpoint-sm: 576px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 992px;
    --breakpoint-xl: 1200px;
    
    /* Container max widths */
    --container-sm: 540px;
    --container-md: 720px;
    --container-lg: 960px;
    --container-xl: 1140px;
}

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

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

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text);
    background-color: var(--color-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--space-md);
    line-height: var(--line-height-sm);
    font-weight: var(--font-weight-semibold);
}

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

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

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

ul, ol {
    margin-bottom: var(--space-md);
    padding-left: var(--space-lg);
}

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

button {
    cursor: pointer;
    font-family: var(--font-family);
}

/* ==============================
   Container
   ============================== */
.container {
    width: 100%;
    padding-right: var(--space-md);
    padding-left: var(--space-md);
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container {
        max-width: var(--container-sm);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: var(--container-md);
    }
}

@media (min-width: 992px) {
    .container {
        max-width: var(--container-lg);
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: var(--container-xl);
    }
}

/* ==============================
   Buttons
   ============================== */
.button {
    display: inline-block;
    padding: var(--space-sm) var(--space-lg);
    background-color: var(--color-button);
    color: var(--color-dark);
    border: none;
    border-radius: var(--border-radius-full);
    font-weight: var(--font-weight-medium);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    box-shadow: var(--shadow-md);
    cursor: pointer;
}

.button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: var(--color-dark);
}

.button:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

/* ==============================
   Section Titles
   ============================== */
.section-title {
    font-size: var(--font-size-xxl);
    text-align: center;
    margin-bottom: var(--space-lg);
    position: relative;
    padding-bottom: var(--space-md);
}

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

.section-subtitle {
    text-align: center;
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ==============================
   Header
   ============================== */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--color-primary);
    box-shadow: var(--shadow-md);
    padding: var(--space-sm) 0;
}

.header__container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 0 var(--space-md);
}

.header__logo {
    margin-bottom: var(--space-sm);
    transition: opacity var(--transition-fast);
}

.header__logo:hover {
    opacity: 0.9;
}

.header__nav {
    width: 100%;
}

.header__nav-toggle {
    display: block;
    background: none;
    border: none;
    color: var(--color-text);
    font-size: var(--font-size-xl);
    margin-left: auto;
    padding: var(--space-sm);
}

.header__nav-list {
    display: none;
    list-style: none;
    padding: 0;
    margin: 0;
    width: 100%;
}

.header__nav-list.is-active {
    display: flex;
    flex-direction: column;
}

.header__nav-item {
    margin: var(--space-xs) 0;
}

.header__nav-link {
    display: block;
    padding: var(--space-xs) var(--space-sm);
    font-weight: var(--font-weight-medium);
    position: relative;
}

.header__nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%) scaleX(0);
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transition: transform var(--transition-fast);
}

.header__nav-link:hover::after,
.header__nav-link--active::after {
    transform: translateX(-50%) scaleX(1);
}

@media (min-width: 768px) {
    .header__container {
        flex-direction: row;
        justify-content: space-between;
    }
    
    .header__logo {
        margin-bottom: 0;
    }
    
    .header__nav-toggle {
        display: none;
    }
    
    .header__nav-list {
        display: flex;
        flex-direction: row;
        justify-content: flex-end;
    }
    
    .header__nav-item {
        margin: 0 var(--space-sm);
    }
}

/* ==============================
   Hero Section
   ============================== */
.hero {
    position: relative;
    height: 80vh;
    min-height: 500px;
    overflow: hidden;
}

.hero__parallax {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/img10.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.hero__content {
    position: relative;
    text-align: center;
    padding: var(--space-xl);
    max-width: 800px;
    z-index: 1;
}

.hero__title {
    font-size: var(--font-size-xxxl);
    margin-bottom: var(--space-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-xl);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero__button {
    font-size: var(--font-size-md);
    padding: var(--space-md) var(--space-xl);
}

/* ==============================
   Benefits Section
   ============================== */
.benefits {
    padding: var(--space-xxl) 0;
    background-color: var(--color-dark);
}

.benefits__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.benefits__item {
    text-align: center;
    padding: var(--space-lg);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.benefits__item:hover {
    transform: translateY(-5px);
}

.benefits__icon {
    font-size: 48px;
    color: var(--color-accent);
    margin-bottom: var(--space-md);
}

.benefits__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.benefits__text {
    font-size: var(--font-size-base);
    color: var(--color-light);
}

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

/* ==============================
   Exercises Section
   ============================== */
.exercises {
    padding: var(--space-xxl) 0;
    background-color: var(--color-primary);
}

.exercises__masonry {
    columns: 1;
    column-gap: var(--space-lg);
}

.exercises__item {
    break-inside: avoid;
    margin-bottom: var(--space-lg);
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.exercises__image {
    width: 100%;
    display: block;
    transition: transform var(--transition-base);
}

.exercises__content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    transform: translateY(0);
    transition: transform var(--transition-base);
}

.exercises__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.exercises__text {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.exercises__item:hover .exercises__image {
    transform: scale(1.05);
}

@media (min-width: 768px) {
    .exercises__masonry {
        columns: 2;
    }
}

@media (min-width: 992px) {
    .exercises__masonry {
        columns: 3;
    }
}

/* ==============================
   Timeline Section
   ============================== */
.timeline {
    padding: var(--space-xxl) 0;
    background-color: var(--color-dark);
}

.timeline__container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline__container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background-color: var(--color-accent);
}

.timeline__item {
    position: relative;
    margin-bottom: var(--space-xl);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timeline__icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background-color: var(--color-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1;
    box-shadow: var(--shadow-md);
    margin-bottom: var(--space-md);
}

.timeline__icon .material-icons {
    font-size: 30px;
    color: var(--color-text);
}

.timeline__content {
    background-color: rgba(255, 255, 255, 0.05);
    padding: var(--space-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    width: 100%;
    text-align: center;
}

.timeline__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.timeline__text {
    font-size: var(--font-size-base);
    color: var(--color-light);
}

@media (min-width: 768px) {
    .timeline__item {
        flex-direction: row;
        justify-content: center;
        transform: translateX(11em);
    }
    
    .timeline__item:nth-child(odd) {
        flex-direction: row-reverse;
        transform: translateX(-11em);
    }
    
    .timeline__icon {
        margin-bottom: 0;
        margin-left: var(--space-md);
        margin-right: var(--space-md);
    }
    
    .timeline__content {
        width: calc(50% - 45px);
        text-align: left;
    }
    
    .timeline__item:nth-child(odd) .timeline__content {
        text-align: right;
    }
}

/* ==============================
   Testimonials Section
   ============================== */
.testimonials {
    padding: var(--space-xxl) 0;
    background-color: var(--color-primary);
}

.testimonials__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.testimonials__item {
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base);
}

.testimonials__item:hover {
    transform: translateY(-5px);
}

.testimonials__content {
    padding: var(--space-xl);
}

.testimonials__text {
    font-size: var(--font-size-md);
    font-style: italic;
    margin-bottom: var(--space-lg);
    position: relative;
}

.testimonials__text::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: -20px;
    left: -10px;
    opacity: 0.2;
    color: var(--color-accent);
    line-height: 1;
}

.testimonials__author {
    font-weight: var(--font-weight-semibold);
    text-align: right;
    color: var(--color-accent);
}

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

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

/* ==============================
   Equipment Section
   ============================== */
.equipment {
    padding: var(--space-xxl) 0;
    background-color: var(--color-dark);
}

.equipment__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.equipment__item {
    position: relative;
    overflow: hidden;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    height: 300px;
}

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

.equipment__content {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: var(--space-lg);
    background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
    transform: translateY(0);
    transition: transform var(--transition-base);
}

.equipment__title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.equipment__text {
    font-size: var(--font-size-base);
    opacity: 0.9;
}

.equipment__item:hover .equipment__image {
    transform: scale(1.05);
}

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

/* ==============================
   FAQ Section
   ============================== */
.faq {
    padding: var(--space-xxl) 0;
    background-color: var(--color-primary);
}

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

.faq__item {
    margin-bottom: var(--space-md);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.faq__question {
    width: 100%;
    padding: var(--space-lg);
    background-color: rgba(0, 0, 0, 0.1);
    border: none;
    text-align: left;
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--color-text);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.faq__question:hover {
    background-color: rgba(0, 0, 0, 0.2);
}

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

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

.faq__answer {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    background-color: rgba(0, 0, 0, 0.05);
    transition: max-height var(--transition-base), padding var(--transition-base);
}

.faq__answer.is-active {
    padding: var(--space-lg);
    max-height: 1000px;
}

/* ==============================
   Subscribe Section
   ============================== */
.subscribe {
    padding: var(--space-xxl) 0;
    background-color: var(--color-dark);
}

.subscribe__form {
    max-width: 600px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.form__group {
    margin-bottom: var(--space-md);
}

.form__label {
    display: block;
    margin-bottom: var(--space-xs);
    font-weight: var(--font-weight-medium);
}

.form__input,
.form__textarea {
    width: 100%;
    padding: var(--space-md);
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius-md);
    color: var(--color-text);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(255, 236, 139, 0.3);
}

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

.subscribe__button {
    justify-self: center;
}

@media (min-width: 768px) {
    .subscribe__form {
        grid-template-columns: 1fr 1fr;
    }
    
    .subscribe__button {
        grid-column: span 2;
    }
}

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

.contact__container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-xl);
}

.contact__info {
    background-color: rgba(0, 0, 0, 0.1);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
}

.contact__info-item {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-lg);
}

.contact__icon {
    font-size: 24px;
    color: var(--color-accent);
    margin-right: var(--space-md);
}

.contact__text {
    margin-bottom: 0;
}

.contact__form {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
    background-color: rgba(0, 0, 0, 0.1);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
}

.contact__button {
    justify-self: start;
}

@media (min-width: 992px) {
    .contact__container {
        grid-template-columns: 1fr 2fr;
    }
    
    .contact__form {
        grid-template-columns: 1fr 1fr;
    }

    .contact__form .form__group:nth-child(3),
    .contact__button {
        grid-column: span 2;
    }
}

/* ==============================
   Success Section
   ============================== */
.success {
    padding: var(--space-xxl) 0;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.success__content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--space-xl);
    background-color: rgba(0, 0, 0, 0.1);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.success__icon {
    font-size: 64px;
    color: var(--color-accent);
    margin-bottom: var(--space-lg);
}

.success__title {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--space-lg);
}

.success__text {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
}

.success__button {
    font-size: var(--font-size-md);
}

/* ==============================
   Legal Pages
   ============================== */
.legal {
    padding: var(--space-xxl) 0;
}

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

.legal__content {
    max-width: 800px;
    margin: 0 auto;
    background-color: rgba(0, 0, 0, 0.1);
    padding: var(--space-xl);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

.legal__intro {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-xl);
}

.legal__subtitle {
    font-size: var(--font-size-xl);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--color-accent);
}

.legal__subheading {
    font-size: var(--font-size-lg);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-sm);
}

.legal__list {
    margin-bottom: var(--space-lg);
}

.legal__updated {
    font-style: italic;
    margin-top: var(--space-xl);
    text-align: right;
    color: var(--color-accent);
}

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

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

.footer__logo {
    margin-bottom: var(--space-lg);
}

.footer__nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer__nav-item {
    margin: 0 var(--space-md) var(--space-sm);
}

.footer__nav-link {
    font-size: var(--font-size-sm);
}

.footer__nav-link--active {
    color: var(--color-accent);
}

.footer__middle {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: var(--space-xl) 0;
    margin-bottom: var(--space-xl);
}

.footer__ethos {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: var(--font-size-md);
    color: var(--color-light);
}

.footer__bottom {
    text-align: center;
}

.footer__copyright {
    font-size: var(--font-size-sm);
    color: var(--color-grey);
}

@media (min-width: 768px) {
    .footer__top {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .footer__logo {
        margin-bottom: 0;
    }
}

/* ==============================
   Back to Top Button
   ============================== */
.back-to-top {
    position: fixed;
    bottom: var(--space-lg);
    right: var(--space-lg);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--color-button);
    color: var(--color-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-md);
    border: none;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast), transform var(--transition-fast);
    z-index: 900;
}

.back-to-top.is-visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-5px);
}