/* 
 * Zirelanova Hydrobalans - Main Stylesheet
 * A fresh, Finnish-inspired design for hydration balance in sports
 */

/* =============== CUSTOM PROPERTIES & RESET =============== */
:root {
    /* Colors */
    --color-arctic-blue: #A7D7E7;
    --color-ice-white: #F8FCFF;
    --color-deep-indigo: #1D3557;
    --color-mint-green: #7FDBA8;
    --color-light-blue: #C7E6F4;
    --color-dark-blue: #0F2942;
    --color-grey: #E0E0E0;
    --color-light-grey: #F5F5F5;
    
    /* Font Families */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 50%;
    
    /* Transition */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Box Shadow */
    --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, 0.15);
    
    /* Z-Index Layers */
    --z-navigation: 100;
    --z-dropdown: 200;
    --z-modal: 300;
    --z-tooltip: 400;
}

/* Dark Theme Variables */
.dark-theme {
    --color-arctic-blue: #204258;
    --color-ice-white: #1A2430;
    --color-deep-indigo: #C7E6F4;
    --color-mint-green: #57A77A;
    --color-light-blue: #2C5270;
    --color-dark-blue: #C7E6F4;
    --color-grey: #444;
    --color-light-grey: #333;
    color-scheme: dark;
}

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

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-deep-indigo);
    background-color: var(--color-ice-white);
    overflow-x: hidden;
    transition: background-color var(--transition-medium), color var(--transition-medium);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.5rem;
}

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

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

a:hover {
    color: var(--color-mint-green);
}

ul {
    list-style: none;
}

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

button, input, select, textarea {
    font-family: inherit;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
    font-weight: 700;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--color-mint-green);
    border-radius: var(--radius-sm);
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto var(--spacing-lg);
    font-size: 1.1rem;
}

/* =============== THEME TOGGLE =============== */
.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: var(--z-navigation);
}

.theme-toggle input {
    opacity: 0;
    width: 0;
    height: 0;
}

.theme-toggle label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 60px;
    height: 30px;
    background-color: var(--color-arctic-blue);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    padding: 0 5px;
}

.theme-toggle .fa-sun {
    color: #ffd700;
}

.theme-toggle .fa-moon {
    color: #c4c9d4;
}

.theme-toggle .slider {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    background-color: var(--color-ice-white);
    border-radius: var(--radius-full);
    transition: var(--transition-medium);
}

.theme-toggle input:checked + label .slider {
    transform: translateX(30px);
}

/* =============== HEADER & NAVIGATION =============== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(248, 252, 255, 0.9);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: var(--z-navigation);
    transition: background-color var(--transition-medium);
    box-shadow: var(--shadow-sm);
}

.dark-theme .site-header {
    background-color: rgba(26, 36, 48, 0.9);
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo-container {
    display: flex;
    align-items: center;
}

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

.main-nav {
    display: flex;
    align-items: center;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    font-weight: 600;
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background-color: var(--color-mint-green);
    transition: width var(--transition-medium);
}

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

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 25px;
    position: relative;
}

.menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--color-deep-indigo);
    position: absolute;
    left: 0;
    transition: var(--transition-medium);
}

.menu-toggle span:nth-child(1) {
    top: 0;
}

.menu-toggle span:nth-child(2) {
    top: 10px;
}

.menu-toggle span:nth-child(3) {
    top: 20px;
}

.menu-open .menu-toggle span:nth-child(1) {
    transform: rotate(45deg);
    top: 10px;
}

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

.menu-open .menu-toggle span:nth-child(3) {
    transform: rotate(-45deg);
    top: 10px;
}

/* =============== BUTTONS =============== */
.btn-primary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: transparent;
    color: var(--color-deep-indigo);
    border: 2px solid var(--color-deep-indigo);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.btn-secondary:hover {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-hero {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
    border-radius: var(--radius-md);
    font-weight: 700;
    text-align: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: var(--shadow-md);
}

.btn-hero:hover {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.btn-glow {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--color-arctic-blue);
    color: var(--color-deep-indigo);
    border-radius: var(--radius-md);
    font-weight: 700;
    text-align: center;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    z-index: 1;
    box-shadow: 0 0 10px rgba(167, 215, 231, 0.5);
    transition: all var(--transition-medium);
}

.btn-glow::before {
    content: '';
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    background: linear-gradient(45deg, var(--color-mint-green), var(--color-arctic-blue), var(--color-deep-indigo));
    background-size: 300% 300%;
    z-index: -1;
    filter: blur(15px);
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.btn-glow:hover {
    color: var(--color-ice-white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(167, 215, 231, 0.7);
}

.btn-glow:hover::before {
    opacity: 0.8;
    animation: glowAnimation 2s infinite;
}

.btn-pricing {
    display: inline-block;
    padding: 0.75rem 2rem;
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    width: 100%;
}

.btn-pricing:hover {
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-submit {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    width: 100%;
}

.btn-submit:hover {
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
}

.btn-newsletter {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.btn-newsletter:hover {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    transform: translateY(-2px);
}

.btn-cookie {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    border-radius: var(--radius-sm);
    font-weight: 600;
    text-align: center;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
}

.btn-cookie.secondary {
    background-color: transparent;
    color: var(--color-deep-indigo);
    border: 1px solid var(--color-deep-indigo);
}

.btn-cookie:hover {
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
}

.btn-cookie.secondary:hover {
    background-color: var(--color-light-grey);
}

/* =============== HERO SECTION =============== */
.hero-section {
    min-height: 100vh;
    padding-top: 80px;
    background: linear-gradient(135deg, rgba(167, 215, 231, 0.3), rgba(127, 219, 168, 0.2));
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/bg.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.15;
    z-index: 0;
}

.hero-section .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content {
    flex: 1;
    max-width: 600px;
    padding-right: var(--spacing-lg);
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-deep-indigo);
    line-height: 1.1;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    color: var(--color-deep-indigo);
    opacity: 0.9;
}

.hero-image {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.hero-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform var(--transition-medium);
}

.hero-image:hover img {
    transform: perspective(1000px) rotateY(0);
}

.wave-divider {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 1;
}

.wave-divider svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

/* =============== WHY WATER SECTION =============== */
.why-water-section {
    background-color: var(--color-ice-white);
    padding: var(--spacing-xl) 0;
    position: relative;
}

.water-benefits {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.benefit-card {
    background-color: rgba(255, 255, 255, 0.7);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(167, 215, 231, 0.3);
}

.dark-theme .benefit-card {
    background-color: rgba(32, 66, 88, 0.3);
}

.benefit-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.icon-container {
    width: 70px;
    height: 70px;
    background-color: var(--color-arctic-blue);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--color-deep-indigo);
    font-size: 1.5rem;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.benefit-card:hover .icon-container {
    background-color: var(--color-mint-green);
    transform: scale(1.1);
}

.water-drops-animation {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    overflow: hidden;
    pointer-events: none;
}

.drop {
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50% 50% 50% 5%;
    background: rgba(167, 215, 231, 0.4);
    transform: rotate(45deg);
    animation: dropFall linear infinite;
}

.drop1 {
    left: 20%;
    animation-duration: 15s;
    animation-delay: 2s;
    width: 15px;
    height: 15px;
}

.drop2 {
    left: 50%;
    animation-duration: 12s;
    animation-delay: 5s;
    width: 25px;
    height: 25px;
}

.drop3 {
    left: 80%;
    animation-duration: 10s;
    width: 20px;
    height: 20px;
}

@keyframes dropFall {
    0% {
        top: -50px;
        opacity: 0;
    }
    10% {
        opacity: 0.7;
    }
    90% {
        opacity: 0.7;
    }
    100% {
        top: 100%;
        opacity: 0;
    }
}

.wave-divider-alt {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    overflow: hidden;
    line-height: 0;
    z-index: 1;
}

.wave-divider-alt svg {
    position: relative;
    display: block;
    width: calc(100% + 1.3px);
    height: 80px;
}

/* =============== HOW MUCH SECTION =============== */
.how-much-section {
    background-color: var(--color-light-blue);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.dark-theme .how-much-section {
    background-color: var(--color-light-blue);
}

.ice-crystal-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/ice.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.05;
    z-index: 0;
}

.hydration-calculator {
    background-color: rgba(248, 252, 255, 0.9);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--spacing-lg);
    position: relative;
    z-index: 1;
    backdrop-filter: blur(10px);
}

.dark-theme .hydration-calculator {
    background-color: rgba(26, 36, 48, 0.9);
}

.calculator-inputs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

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

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

.input-group input,
.input-group select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-grey);
    border-radius: var(--radius-md);
    background-color: var(--color-ice-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.dark-theme .input-group input,
.dark-theme .input-group select {
    background-color: var(--color-light-grey);
    color: var(--color-ice-white);
}

.input-group input:focus,
.input-group select:focus {
    outline: none;
    border-color: var(--color-arctic-blue);
    box-shadow: 0 0 0 2px rgba(167, 215, 231, 0.5);
}

.calculator-results {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: space-between;
    align-items: center;
}

.result-card {
    flex: 1;
    min-width: 300px;
    background: linear-gradient(135deg, var(--color-mint-green), var(--color-arctic-blue));
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    color: var(--color-deep-indigo);
    text-align: center;
}

.result-value {
    font-size: 2.5rem;
    font-weight: 700;
    margin: var(--spacing-md) 0;
}

.result-breakdown {
    text-align: left;
    margin-top: var(--spacing-md);
}

.result-breakdown p {
    margin-bottom: var(--spacing-xs);
}

.hydration-chart-container {
    flex: 1;
    min-width: 300px;
    height: 300px;
    background-color: rgba(248, 252, 255, 0.9);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.dark-theme .hydration-chart-container {
    background-color: rgba(26, 36, 48, 0.9);
}

/* =============== WHEN SECTION =============== */
.when-section {
    background-color: var(--color-ice-white);
    padding: var(--spacing-xl) 0;
}

.timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-lg) 0;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 4px;
    background-color: var(--color-arctic-blue);
    transform: translateX(-50%);
    border-radius: var(--radius-full);
}

.timeline-phase {
    display: flex;
    margin-bottom: var(--spacing-xl);
    position: relative;
}

.phase-icon {
    width: 80px;
    height: 80px;
    background-color: var(--color-arctic-blue);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-deep-indigo);
    font-size: 2rem;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    box-shadow: var(--shadow-md);
    transition: background-color var(--transition-medium);
}

.timeline-phase:hover .phase-icon {
    background-color: var(--color-mint-green);
}

.phase-content {
    width: 45%;
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-medium);
    position: relative;
}

.dark-theme .phase-content {
    background-color: rgba(32, 66, 88, 0.3);
}

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

.phase-pre .phase-content {
    margin-right: 55%;
}

.phase-during .phase-content {
    margin-left: 55%;
}

.phase-post .phase-content {
    margin-right: 55%;
}

.phase-content h3 {
    color: var(--color-deep-indigo);
    margin-bottom: var(--spacing-md);
}

.phase-content ul {
    padding-left: var(--spacing-md);
}

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

.phase-content li::before {
    content: '•';
    color: var(--color-mint-green);
    font-size: 1.5rem;
    position: absolute;
    left: 0;
    top: -5px;
}

/* =============== FORMULA SECTION =============== */
.formula-section {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.nordic-lights-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/nordi.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.2;
    z-index: 0;
}

.formula-section .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    z-index: 1;
    flex-wrap: wrap;
}

.formula-content {
    flex: 1;
    max-width: 600px;
    padding-right: var(--spacing-lg);
}

.formula-section .section-title {
    text-align: left;
    color: var(--color-ice-white);
}

.formula-section .section-title::after {
    left: 0;
    transform: none;
}

.formula-section .section-intro {
    text-align: left;
    margin-left: 0;
    color: var(--color-ice-white);
    opacity: 0.9;
}

.formula-features {
    margin: var(--spacing-lg) 0;
}

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

.feature-icon {
    width: 50px;
    height: 50px;
    background-color: var(--color-mint-green);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-deep-indigo);
    font-size: 1.2rem;
    margin-right: var(--spacing-md);
    flex-shrink: 0;
    transition: transform var(--transition-fast);
}

.feature:hover .feature-icon {
    transform: scale(1.1);
}

.feature-text h3 {
    margin-bottom: var(--spacing-xs);
    color: var(--color-arctic-blue);
}

.feature-text p {
    color: var(--color-ice-white);
    opacity: 0.9;
}

.formula-cta {
    margin-top: var(--spacing-lg);
}

.formula-image {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.formula-image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-medium);
}

.formula-image:hover img {
    transform: scale(1.02);
}

.ingredient-dots {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.dot {
    position: absolute;
    width: 20px;
    height: 20px;
    background-color: var(--color-mint-green);
    border-radius: var(--radius-full);
    box-shadow: 0 0 10px rgba(127, 219, 168, 0.7);
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.dot::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    white-space: nowrap;
    visibility: hidden;
    opacity: 0;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.dot:hover {
    transform: scale(1.3);
}

.dot:hover::before {
    visibility: visible;
    opacity: 1;
}

.dot1 {
    top: 20%;
    left: 25%;
}

.dot2 {
    top: 40%;
    left: 60%;
}

.dot3 {
    top: 70%;
    left: 35%;
}

@keyframes glowAnimation {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

/* =============== MENTORS SECTION =============== */
.mentors-section {
    background-color: var(--color-ice-white);
    padding: var(--spacing-xl) 0;
}

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

.mentor-card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-medium), box-shadow var(--transition-medium);
}

.dark-theme .mentor-card {
    background-color: var(--color-light-grey);
}

.mentor-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.mentor-image {
    height: 250px;
    overflow: hidden;
}

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

.mentor-card:hover .mentor-image img {
    transform: scale(1.05);
}

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

.mentor-info h3 {
    margin-bottom: var(--spacing-xs);
}

.mentor-title {
    color: var(--color-mint-green);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.mentor-bio {
    color: var(--color-deep-indigo);
    opacity: 0.9;
}

/* =============== FAQ SECTION =============== */
.faq-section {
    background-color: var(--color-light-blue);
    padding: var(--spacing-xl) 0;
}

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

.faq-item {
    background-color: white;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.dark-theme .faq-item {
    background-color: var(--color-light-grey);
}

.faq-question {
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.faq-question:hover {
    background-color: rgba(167, 215, 231, 0.1);
}

.faq-question h3 {
    margin: 0;
    font-size: 1.1rem;
}

.faq-toggle {
    flex-shrink: 0;
    margin-left: var(--spacing-md);
    transition: transform var(--transition-fast);
}

.faq-toggle i {
    font-size: 1rem;
    color: var(--color-deep-indigo);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 var(--spacing-md) var(--spacing-md);
    display: none;
}

.faq-item.active .faq-answer {
    display: block;
}

/* =============== PRICING SECTION =============== */
.pricing-section {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    padding: var(--spacing-xl) 0;
    position: relative;
    overflow: hidden;
}

.frost-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-image: url('images/frost.jpg');
    background-size: cover;
    background-position: center;
    opacity: 0.1;
    z-index: 0;
}

.pricing-section .section-title,
.pricing-section .section-intro {
    color: var(--color-ice-white);
}

.pricing-cards {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.pricing-card {
    background-color: rgba(248, 252, 255, 0.9);
    color: var(--color-deep-indigo);
    border-radius: var(--radius-lg);
    overflow: hidden;
    width: 100%;
    max-width: 350px;
    box-shadow: var(--shadow-lg);
    transition: transform var(--transition-medium);
    position: relative;
}

.dark-theme .pricing-card {
    background-color: rgba(26, 36, 48, 0.9);
    color: var(--color-ice-white);
}

.pricing-card:hover {
    transform: translateY(-15px);
}

.pricing-card.athlete {
    z-index: 2;
    transform: scale(1.05);
}

.pricing-card.athlete:hover {
    transform: scale(1.05) translateY(-15px);
}

.popular-tag {
    position: absolute;
    top: 15px;
    right: -30px;
    background-color: var(--color-mint-green);
    color: var(--color-deep-indigo);
    font-weight: 700;
    padding: 5px 30px;
    transform: rotate(45deg);
    font-size: 0.8rem;
    box-shadow: var(--shadow-sm);
}

.card-header {
    padding: var(--spacing-lg);
    text-align: center;
    border-bottom: 1px solid rgba(167, 215, 231, 0.3);
}

.card-header h3 {
    margin-bottom: var(--spacing-md);
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
}

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

.amount {
    font-size: 3rem;
    font-weight: 700;
    margin: 0 var(--spacing-xs);
}

.period {
    font-size: 1rem;
    opacity: 0.7;
}

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

.card-features ul {
    list-style: none;
    padding: 0;
}

.card-features li {
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
}

.card-features i {
    margin-right: var(--spacing-sm);
    font-size: 1rem;
}

.card-features .fa-check {
    color: var(--color-mint-green);
}

.card-features .fa-times {
    color: var(--color-grey);
}

.card-footer {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    text-align: center;
}

.pricing-card.starter {
    border-top: 5px solid var(--color-arctic-blue);
}

.pricing-card.athlete {
    border-top: 5px solid var(--color-mint-green);
}

.pricing-card.pro {
    border-top: 5px solid var(--color-deep-indigo);
}

/* =============== CONTACT SECTION =============== */
.contact-section {
    background-color: var(--color-ice-white);
    padding: var(--spacing-xl) 0;
}

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

.contact-info {
    color: var(--color-deep-indigo);
}

.contact-details {
    margin: var(--spacing-lg) 0;
}

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

.contact-item i {
    color: var(--color-mint-green);
    font-size: 1.2rem;
    margin-right: var(--spacing-md);
    margin-top: 5px;
}

.map-container {
    margin-top: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.contact-form-container {
    background-color: white;
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
}

.dark-theme .contact-form-container {
    background-color: var(--color-light-grey);
}

.contact-form-container h3 {
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

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

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

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--color-grey);
    border-radius: var(--radius-md);
    background-color: var(--color-ice-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.dark-theme .contact-form input,
.dark-theme .contact-form select,
.dark-theme .contact-form textarea {
    background-color: rgba(26, 36, 48, 0.9);
    color: var(--color-ice-white);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--color-arctic-blue);
    box-shadow: 0 0 0 2px rgba(167, 215, 231, 0.5);
}

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

.checkbox-group input {
    width: auto;
    margin-right: var(--spacing-sm);
    margin-top: 5px;
}

.newsletter {
    background-color: var(--color-arctic-blue);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    text-align: center;
    color: var(--color-deep-indigo);
}

.dark-theme .newsletter {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
}

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

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

.newsletter-form {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    justify-content: center;
    max-width: 800px;
    margin: 0 auto;
}

.newsletter-form .form-group {
    flex: 1;
    min-width: 250px;
}

.newsletter-form input {
    width: 100%;
    padding: 0.75rem;
    border: none;
    border-radius: var(--radius-md);
    background-color: var(--color-ice-white);
}

.dark-theme .newsletter-form input {
    background-color: var(--color-light-grey);
    color: var(--color-ice-white);
}

/* =============== FOOTER =============== */
.site-footer {
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    padding: var(--spacing-lg) 0;
}

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

.footer-logo {
    flex: 1;
    min-width: 250px;
    max-width: 400px;
}

.footer-logo .logo {
    height: 60px;
    margin-bottom: var(--spacing-md);
}

.footer-links {
    flex: 2;
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.footer-column {
    flex: 1;
    min-width: 150px;
}

.footer-column h4 {
    margin-bottom: var(--spacing-md);
    color: var(--color-arctic-blue);
    font-size: 1.1rem;
}

.footer-column ul {
    list-style: none;
    padding: 0;
}

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

.footer-column a {
    color: var(--color-ice-white);
    opacity: 0.8;
    transition: opacity var(--transition-fast);
}

.footer-column a:hover {
    opacity: 1;
    color: var(--color-mint-green);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(167, 215, 231, 0.2);
}

/* =============== COOKIE CONSENT =============== */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--color-deep-indigo);
    color: var(--color-ice-white);
    padding: var(--spacing-md);
    z-index: var(--z-modal);
    display: none;
}

.cookie-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.cookie-content p {
    margin: 0;
    flex: 3;
    min-width: 250px;
}

.cookie-content a {
    color: var(--color-arctic-blue);
    text-decoration: underline;
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex: 1;
    justify-content: flex-end;
}

/* =============== BACK TO TOP =============== */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--color-arctic-blue);
    color: var(--color-deep-indigo);
    border: none;
    border-radius: var(--radius-full);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-fast), visibility var(--transition-fast), background-color var(--transition-fast);
    z-index: var(--z-dropdown);
    box-shadow: var(--shadow-md);
}

#backToTop:hover {
    background-color: var(--color-mint-green);
}

#backToTop.visible {
    opacity: 1;
    visibility: visible;
}

/* =============== ANIMATIONS =============== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* =============== RESPONSIVE STYLES =============== */
@media (max-width: 1024px) {
    html {
        font-size: 15px;
    }
    
    .hero-content {
        padding-right: 0;
    }
    
    .formula-content {
        padding-right: 0;
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .phase-icon {
        left: 30px;
        transform: none;
        width: 60px;
        height: 60px;
        font-size: 1.5rem;
    }
    
    .phase-content {
        width: auto;
        margin-left: 80px !important;
        margin-right: 0 !important;
    }
}

@media (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background-color: var(--color-ice-white);
        flex-direction: column;
        padding: 80px var(--spacing-lg) var(--spacing-lg);
        transition: right var(--transition-medium);
        z-index: var(--z-dropdown);
        box-shadow: var(--shadow-lg);
        overflow-y: auto;
    }
    
    .dark-theme .nav-links {
        background-color: var(--color-light-grey);
    }
    
    .menu-open .nav-links {
        right: 0;
    }
    
    .hero-section .container,
    .formula-section .container {
        flex-direction: column;
    }
    
    .hero-content,
    .formula-content {
        max-width: 100%;
        margin-bottom: var(--spacing-lg);
    }
    
    .hero-image,
    .formula-image {
        max-width: 100%;
    }
    
    .calculator-results {
        flex-direction: column;
    }
    
    .result-card,
    .hydration-chart-container {
        width: 100%;
    }
}

@media (max-width: 576px) {
    .section-title {
        font-size: 1.8rem;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .pricing-card {
        max-width: 100%;
    }
    
    .pricing-card.athlete {
        transform: none;
    }
    
    .pricing-card.athlete:hover {
        transform: translateY(-15px);
    }
    
    .contact-grid {
        gap: var(--spacing-lg);
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .footer-logo {
        text-align: center;
        max-width: 100%;
    }
    
    .footer-links {
        justify-content: space-around;
    }
}