/* Base Styles & Variables */
:root {
    --primary-color: #2A9FD6;    /* Turquoise blue from the ocean */
    --primary-dark: #006994;     /* Deeper ocean blue */
    --primary-light: #8FD5F3;    /* Light sky blue */
    --secondary-color: #F4D03F;  /* Sandy beach color */
    --dark-color: #1B4F72;       /* Deep ocean blue */
    --light-color: #F8F9FA;
    --border-color: #E9ECEF;
    --success-color: #4caf50;
    --success-dark: #388e3c;
    --gray-color: #6c757d;
    --section-padding: 5rem 0;
    --accent-color: #2ECC71;     /* Green from the foliage */
    --text-color: #2C3E50;
    --light-bg: #F5F5F5;
    --font-size-base: 1.1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2rem;
    --font-size-xxxl: 3rem;
    --spacing-base: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    --border-radius: 12px;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', 'Open Sans', sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--light-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5 {
    font-family: 'Montserrat', sans-serif;
    font-weight: 800;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 {
    font-size: var(--font-size-xxxl);
    margin-bottom: var(--spacing-xl);
}

h2 {
    font-size: var(--font-size-xxl);
    margin-bottom: var(--spacing-xl);
}

h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-lg);
}

p {
    margin-bottom: 1rem;
}

a {
    text-decoration: none;
    color: var(--primary-color);
    transition: all 0.3s ease;
}

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

ul {
    list-style: none;
}

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

section {
    padding: 80px 0;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: url('../img/beach_hero_1.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
    padding: 160px 0 60px;
    margin-top: 0;
}

.hero .container {
    position: relative;
    z-index: 1;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
    text-align: left;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    row-gap: 0.1rem;
    align-items: start;
}

.hero p {
    font-size: 1.4rem;
    line-height: 1.6;
    opacity: 0.9;
    max-width: 600px;
}

.stat-slide {
    display: none;
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    line-height: 1.6;
    min-width: 0;
    flex: 1 1 0;
    align-items: center;
    justify-content: flex-end;
    padding: 0 1.5rem;
    height: 80px;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.2);
}

.stat-slide.active {
    display: flex;
    
}

/* Hero Description - Now First Column */
.hero-description {
    position: relative;
    margin-top: 0;
    padding-top: 0;
    text-align: center;
    padding-bottom: 3.5rem;
    margin-left: auto;
    margin-right: auto;
    max-width: 700px;
}

.hero-description p {
    font-size: 1.8rem;
    line-height: 1.4;
    color: rgba(255, 255, 255, 1);
    margin: 0;
    font-weight: bold;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.2);
}



/* Footer */
footer {
    background: var(--primary-dark);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 2rem;
    margin-bottom: 2rem;
    align-items: start;
}

.footer-content > div > *:first-child {
    margin-top: 0;
}

.footer-about p {
    margin: 1rem 0;
}

.footer-contact p {
    margin: 1rem 0;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
}

/* Organizations Section */
.organizations {
    padding: 0;
    position: relative;
    margin-top: -2rem;
}


.org-layout {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 2rem;
    padding: 3rem 2rem 5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
    background: none;
}

.category-descriptions {
    position: relative;
    padding: 0;
}

.category-description {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    padding: 0;
}

.category-description.active {
    opacity: 1;
    visibility: visible;
    position: relative;
}

.category-description p {
    font-family: 'Nunito', 'Montserrat', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    line-height: 1.6;
    color: #2471A3;
}

/* Organization Grid */
.org-grid {
    display: none;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1rem;
}

.org-grid.active {
    display: grid;
}

/* Tab Navigation */
.org-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    padding: 0 1rem;
    z-index: 2;
    margin: -60px auto 0px auto;
    background: transparent;
    border-radius: 0;
    justify-content: center;
}

.tab {
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    border-radius: 8px 8px 0 0;
    position: relative;
    z-index: 1;
    margin-bottom: 0;
    background-color: rgba(255, 255, 255, 0.8);
    border: none;
    font-weight: 600;
    color: var(--text-color);
}

.tab i {
    font-size: 1rem;
}

.tab-title {
    font-size: 1.1rem;
}

/* Category-specific colors for tabs and backgrounds */
.cleanup-tab.active {
    background-color: #BDE3F2;  /* Light ocean blue */
    color: var(--primary-dark);
}

.advocacy-tab.active {
    background-color: #D4E6F1;  /* Soft sky blue */
    color: var(--primary-dark);
}

.research-tab.active {
    background-color: #A9CCE3;  /* Medium ocean blue */
    color: var(--primary-dark);
}

.education-tab.active {
    background-color: #AED6F1;  /* Clear sky blue */
    color: var(--primary-dark);
}

.innovation-tab.active {
    background-color: #85C1E9;  /* Bright ocean blue */
    color: var(--primary-dark);
}

.tab.active {
    z-index: 2;
}

/* Content Wrapper Backgrounds */
.org-content-wrapper {
    transition: background-color 0.3s;
}

.cleanup-bg {
    background-color: #BDE3F2;
}

.advocacy-bg {
    background-color: #D4E6F1;
}

.research-bg {
    background-color: #A9CCE3;
}

.education-bg {
    background-color: #AED6F1;
}

.innovation-bg {
    background-color: #85C1E9;
}

/* Organization Cards */
.org-card {
    position: relative;
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 1px 5px rgba(0,0,0,0.16);
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.3s cubic-bezier(0.165, 0.84, 0.44, 1);
    cursor: pointer;
    text-decoration: none;
    display: block;
    color: var(--text-color);
    padding: var(--spacing-xl);
}

.org-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
}

.org-title-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
}

.org-title-row h3 {
    margin-bottom: 0;
    
    color: var(--primary-dark);
    font-size: var(--font-size-lg);
    font-weight: 700;
    transition: color 0.3s ease;
    display: inline-block;
}

.org-card:hover .org-title-row h3 {
    color: var(--primary-color);
}

.org-card-chevron {
    align-self: center;
    margin-top: 0;
    font-size: 1.7rem;
    color: var(--primary-dark);
    opacity: 0.5;
    font-family: 'Montserrat', 'Arial', sans-serif;
    font-weight: 700;
    transition: color 0.2s, opacity 0.2s, margin-left 0.2s;
    pointer-events: none;
    line-height: 1;
    margin-left: 0.5rem;
    position: static;
}

.org-card:hover .org-card-chevron {
    color: var(--primary-color);
    opacity: 0.9;
    margin-left: 0.8rem;
}

/* Take Action Section */
.take-action {
    background: 
        url('data:image/svg+xml;utf8,<svg width="100" height="30" viewBox="0 0 100 10" fill="none" xmlns="http://www.w3.org/2000/svg"><path d="M0 7 Q 12.5 0, 25 7 T 50 7 T 75 7 T 100 7" stroke="%23e0e0e0" stroke-width="0.7" fill="none"/></svg>') repeat,
        var(--light-bg);
    background-size: 100px 30px, auto;
    background-position: top left;
    background-repeat: repeat, repeat;
    padding: 4rem 0;
    text-align: center;
}

.take-action h2 {
    margin-bottom: 1rem;
    color: var(--primary-dark);
}

.take-action > .container > p {
    max-width: 600px;
    margin: 0 auto 3rem;
    font-size: var(--font-size-lg);
    color: var(--text-color);
}

.action-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
    margin-top: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.action-item {
    padding: 2rem;
    text-align: center;
    position: relative;
}

.action-item:not(:last-child)::after {
    display: none;
}

.action-icon {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.action-item:hover .action-icon {
    transform: translateY(-5px);
}

.action-item h3 {
    margin: 0.5rem 0;
    color: var(--primary-dark);
    font-size: var(--font-size-lg);
}

.action-item p {
    margin: 0;
    color: var(--text-color);
    font-size: var(--font-size-base);
    line-height: 1.6;
    max-width: 250px;
    margin: 0 auto;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        gap: 5rem;
        row-gap: 0.5rem;
    }
    .hero-description {
        grid-column: 1;
        grid-row: 2;
    }
    .hero-stats {
        grid-column: 1;
        grid-row: 3;
        height: 180px;
    }
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
    
    .hero p {
        font-size: 1.2rem;
    }

    .org-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }

    .org-tabs {
        gap: 0.5rem;
        padding: 0 0.5rem;
    }

    .tab {
        padding: 0.5rem 0.75rem;
    }

    .tab-title {
        font-size: 0.8rem;
    }

    .hero-description p {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .org-grid {
        grid-template-columns: 1fr;
    }

    .org-tabs {
        gap: 0.25rem;
    }

    .tab {
        padding: 0.4rem 0.6rem;
    }

    .tab-title {
        font-size: 0.75rem;
    }

    .action-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .action-item::after {
        display: none;
    }

    .action-item {
        padding: 1rem;
    }

    .action-item p {
        max-width: 100%;
    }

    .hero-stats {
        height: 200px;
    }

    .hero-description p {
        font-size: 1.3rem;
    }
}

/* Citations */
.citations {
    padding-top: 0;
    margin-top: 0;
}

.citations h4 {
    margin-top: 0;
    margin-bottom: 1.5rem;
}

.citation-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    list-style: decimal;
    padding-left: 1.5rem;
}

.citation-list li {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

.citation-list a {
    color: rgba(255,255,255,0.9);
    text-decoration: none;
    transition: color 0.3s ease;
}

.citation-list a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .citation-list {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .citation-list {
        grid-template-columns: 1fr;
    }
}

.stat-cite {
    font-size: 0.7em;
    vertical-align: super;
    position: relative;
    top: -0.3em;
    opacity: 0.6;
    margin-left: 0.15em;
    color: #fff;
    text-shadow: 1px 1px 4px rgba(0,0,0,0.3);
    font-weight: 400;
    white-space: nowrap;
}

@media (max-width: 900px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    .citations {
        margin-top: 2rem;
    }
}

.handwritten-logo {
    font-family: 'Caveat', cursive;
    font-size: 3.2rem;
    color: #fff !important;
    letter-spacing: 0.03em;
    font-weight: 700;
    line-height: 0.85;
    transform: rotate(-2deg);
    display: inline-block;
    text-shadow: none;
}

@media (max-width: 1000px) {
    .tab i {
        display: none;
    }
    
    .org-tabs {
        flex-wrap: nowrap;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none;
        padding-left: 0;
        padding-right: 0;
        margin-left: 0;
        margin-right: 0;
    }
    
    .container > .org-tabs {
        width: 100%;
        max-width: 100%;
        left: 0;
        right: 0;
        transform: none;
    }
    
    .org-tabs::-webkit-scrollbar {
        display: none;
    }
}

@media (max-width: 600px) {

    
    .org-layout {
        grid-template-columns: 1fr;
        padding: 1rem 1rem 2rem 1rem;
    }
    
    .org-grid {
        grid-template-columns: 1fr;
        gap: 1.2rem;
    }
    
    .org-card {
        padding: 1.2rem;
    }
}

.topbar {
    position: absolute;
    top: 2rem;
    left: 2rem;
    right: 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 2000;
    width: auto;
    background: none;
    margin: 0;
    pointer-events: none; /* allow hero content to be clickable below if needed */
    gap: 3rem;
}

.topbar-logo, .topbar-stats {
    pointer-events: auto;
}

.topbar-logo {
    flex-shrink: 0;
}

.topbar-stats {
    flex: 1 1 0;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: flex-end;
}

@media (max-width: 700px) {
    .topbar-stats {
        display: none !important;
    }
}

@media (max-width: 900px) {
    .action-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 2rem;
    }
}

@media (max-width: 480px) {
    .action-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
}