/* Root Variables - Eco Mint Green & White Light Theme */
:root {
    --bg-dark: #ffffff; /* Main Light Background */
    --bg-dark-alt: #f0faf5; /* Soft Pale Mint Background for alternating folds */
    --bg-card: #ffffff;
    --bg-card-hover: #ffffff;
    --primary: #10b981; /* Vibrant Mint Green */
    --primary-glow: rgba(16, 185, 129, 0.08);
    --primary-hover: #059669; /* Emerald Green */
    --accent: #34d399; /* Soft Mint */
    --text-main: #0f172a; /* Deep Slate (Almost Black) for readability */
    --text-muted: #475569; /* Slate Gray */
    --border-color: rgba(16, 185, 129, 0.12);
    --border-color-hover: rgba(16, 185, 129, 0.35);
    --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-family);
}

body {
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--bg-dark);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Grids */
.grid {
    display: grid;
    gap: 2rem;
}

/* Header & Navigation */
.main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 75px;
}

.logo {
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-main);
}

.logo-icon {
    color: var(--primary);
    font-size: 1.4rem;
}

.logo span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.nav-link:hover {
    color: var(--primary);
}

.nav-btn {
    text-decoration: none;
    background: var(--primary-glow);
    color: var(--primary-hover);
    border: 1px solid rgba(16, 185, 129, 0.25);
    padding: 0.55rem 1.1rem;
    border-radius: 9999px;
    font-weight: 700;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-smooth);
}

.nav-btn:hover {
    background: var(--primary);
    color: #ffffff;
    border-color: var(--primary);
    box-shadow: 0 5px 15px rgba(16, 185, 129, 0.2);
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
}

/* Hero Section */
.hero-section {
    position: relative;
    padding-top: 170px;
    padding-bottom: 120px;
    background: radial-gradient(circle at 50% 0%, rgba(16, 185, 129, 0.08) 0%, transparent 60%);
    overflow: hidden;
}

.hero-glow-1 {
    position: absolute;
    top: -10%;
    left: 20%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.04) 0%, transparent 70%);
    filter: blur(50px);
    pointer-events: none;
}

.hero-glow-2 {
    position: absolute;
    bottom: 10%;
    right: 20%;
    width: 350px;
    height: 350px;
    background: radial-gradient(circle, rgba(52, 211, 153, 0.03) 0%, transparent 70%);
    filter: blur(50px);
    pointer-events: none;
}

.hero-container {
    max-width: 850px;
    position: relative;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(16, 185, 129, 0.06);
    border: 1px solid rgba(16, 185, 129, 0.15);
    padding: 0.4rem 1.1rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--primary-hover);
    margin-bottom: 2rem;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background-color: var(--primary);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--primary);
}

.hero-title {
    font-size: 3.75rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
    color: var(--text-main);
}

.cyan-gradient {
    background: linear-gradient(135deg, var(--primary-hover) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    line-height: 1.7;
    margin-bottom: 3rem;
}

/* Hero CTA Buttons */
.hero-buttons {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2.5rem;
}

@media (max-width: 640px) {
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
        width: 100%;
    }
    .hero-buttons .btn {
        width: 100%;
        margin-right: 0 !important;
    }
}

/* Sections */
.section {
    padding: 95px 0;
}

.bg-dark-alt {
    background-color: var(--bg-dark-alt);
}

.text-center {
    text-align: center;
}

.section-heading {
    margin-bottom: 4rem;
}

.tag {
    font-size: 0.8rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--primary-hover);
    display: block;
    margin-bottom: 0.75rem;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    color: var(--text-main);
}

.underline {
    width: 50px;
    height: 4px;
    background: var(--primary);
    margin: 1.25rem auto 0;
    border-radius: 2px;
}

.section-subtitle {
    margin-top: 1.5rem;
    color: var(--text-muted);
    font-size: 1.05rem;
    max-width: 650px;
    margin-left: auto;
    margin-right: auto;
}

/* Eco Light-Theme Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 2.25rem;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.04);
}

.card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(16, 185, 129, 0.08);
}

/* Tabbed Materials Section */
.tabs-header {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-trigger {
    background: #f8fafc;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 0.75rem 1.75rem;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    transition: var(--transition-smooth);
}

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

.tab-trigger:hover {
    color: var(--primary-hover);
    border-color: var(--border-color-hover);
}

.tab-trigger.active {
    background: var(--primary-glow);
    color: var(--primary-hover);
    border-color: var(--primary);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.08);
}

.tabs-content {
    position: relative;
    min-height: 400px;
}

.tab-pane {
    display: none;
    opacity: 0;
    transform: translateY(15px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.tab-pane.active {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.pane-grid {
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: 3.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    overflow: hidden;
    min-height: 400px;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.03);
}

@media (max-width: 768px) {
    .pane-grid {
        grid-template-columns: 1fr;
        gap: 0;
    }
}

.pane-info {
    padding: 3.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

@media (max-width: 640px) {
    .pane-info {
        padding: 2rem;
    }
}

.pane-info h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.pane-info p {
    color: var(--text-muted);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.pane-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.pane-list li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-main);
    font-weight: 500;
    font-size: 0.95rem;
}

.pane-list li i {
    color: var(--primary);
}

.pane-visual {
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    min-height: 300px;
    border-left: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .pane-visual {
        border-left: none;
        border-top: 1px solid var(--border-color);
    }
}

/* How It Works Section Details */
.process-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

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

.process-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 3rem 2.25rem;
    position: relative;
    transition: var(--transition-smooth);
    box-shadow: 0 8px 30px rgba(16, 185, 129, 0.04);
}

.process-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(16, 185, 129, 0.08);
}

.process-num {
    display: block;
    font-size: 2.25rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 1rem;
    opacity: 0.8;
}

.process-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 1rem;
}

.process-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Partner Redirect Section */
.cta-section {
    position: relative;
    padding: 110px 0;
    background: radial-gradient(circle at 50% 100%, rgba(16, 185, 129, 0.06) 0%, transparent 60%);
    border-top: 1px solid var(--border-color);
}

.cta-overlay-glow {
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 250px;
    height: 250px;
    background: radial-gradient(circle, rgba(16, 185, 129, 0.03) 0%, transparent 70%);
    filter: blur(40px);
    pointer-events: none;
}

.cta-container {
    max-width: 720px;
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    margin-bottom: 1.5rem;
    line-height: 1.25;
    color: var(--text-main);
}

.cta-description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    line-height: 1.7;
}

.cta-buttons {
    margin-bottom: 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.8rem;
    border-radius: 8px;
    font-weight: 700;
    text-decoration: none;
    transition: var(--transition-smooth);
    cursor: pointer;
}

.btn-large {
    padding: 1.15rem 2.75rem;
    font-size: 1.05rem;
    border-radius: 12px;
}

.btn-accent {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-hover) 100%);
    color: #ffffff;
    border: none;
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.25);
}

.btn-accent:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(16, 185, 129, 0.35);
}

.partner-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.partner-note a {
    color: var(--primary-hover);
    font-weight: 700;
    text-decoration: none;
    border-bottom: 1px dotted var(--primary-hover);
    transition: var(--transition-smooth);
}

.partner-note a:hover {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

/* Footer Section - Premium Dark Navy slate */
.main-footer {
    background-color: #0b0f19;
    border-top: 1px solid rgba(16, 185, 129, 0.15);
    padding: 3rem 0;
    font-size: 0.85rem;
    color: #9ca3af;
}

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

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
}

.footer-links {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.footer-links a {
    color: #9ca3af;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--primary);
}

.separator {
    color: rgba(255, 255, 255, 0.1);
}