/* ==========================================================================
   Global Design System for Circular Eco Solutions
   ========================================================================== */

:root {
    /* Color Palette */
    --clr-primary-green: #0a5f38;
    /* Eco Green */
    --clr-primary-light: #16a362;
    --clr-accent-orange: #f26b21;
    /* Energy Orange */

    /* Grays & Neutrals */
    --clr-bg-dark: #0f172a;
    /* Industrial Dark Blue/Gray */
    --clr-bg-light: #f8fafc;
    --clr-text-main: #334155;
    --clr-text-light: #94a3b8;
    --clr-white: #ffffff;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Spacing & Layout */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --container-max-width: 1200px;

    /* Border Radius & Shadows */
    --radius-md: 8px;
    --radius-lg: 16px;
    --shadow-subtle: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);

    /* Transitions */
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--clr-text-main);
    background-color: var(--clr-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

ul {
    list-style: none;
}

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==========================================================================
   Typography Utilities
   ========================================================================== */
.highlight {
    color: var(--clr-primary-green);
}

/* ==========================================================================
   Components (Buttons, Nav, etc.)
   ========================================================================== */

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-primary-outline {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    text-align: center;
}

.btn-primary {
    background-color: var(--clr-primary-green);
    color: var(--clr-white);
    border: 2px solid var(--clr-primary-green);
}

.btn-primary:hover {
    background-color: var(--clr-primary-light);
    border-color: var(--clr-primary-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-subtle);
}

.btn-secondary {
    background-color: var(--clr-accent-orange);
    color: var(--clr-white);
    border: 2px solid var(--clr-accent-orange);
}

.btn-secondary:hover {
    background-color: #e55a10;
    border-color: #e55a10;
    transform: translateY(-2px);
    box-shadow: var(--shadow-subtle);
}

.btn-primary-outline {
    background-color: transparent;
    color: var(--clr-primary-green);
    border: 2px solid var(--clr-primary-green);
}

.btn-primary-outline:hover {
    background-color: var(--clr-primary-green);
    color: var(--clr-white);
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    padding: var(--spacing-md) 0;
    transition: var(--transition-smooth);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--clr-primary-green);
}

.nav-links {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-links a:not(.btn-primary-outline) {
    font-weight: 600;
    color: var(--clr-text-main);
}

.nav-links a:not(.btn-primary-outline):hover {
    color: var(--clr-primary-green);
}

/* ==========================================================================
   Sections
   ========================================================================== */

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    /* offset for fixed nav */
    color: var(--clr-white);
    overflow: hidden;
}

.hero-video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    filter: brightness(0.6);
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 0%, rgba(10, 95, 56, 0.75) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    text-align: left;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-sm);
    color: var(--clr-white);
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.6);
}

.hero-title .highlight {
    color: var(--clr-accent-orange);
    text-shadow: 0 0 25px rgba(242, 107, 33, 0.5);
}

.hero-subtitle {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    color: var(--clr-white);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-copy {
    font-size: 1.125rem;
    color: #cbd5e1;
    margin-bottom: var(--spacing-xl);
    max-width: 700px;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
}

/* Footer */
footer {
    background-color: var(--clr-bg-dark);
    color: var(--clr-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

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

.footer-links a {
    color: var(--clr-text-light);
    margin: 0 var(--spacing-sm);
}

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

/* ==========================================================================
   Page Specific Styles
   ========================================================================== */
.page-content {
    padding-top: 80px;
    min-height: 80vh;
}

.page-header {
    background-color: var(--clr-bg-dark);
    color: var(--clr-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.page-header .page-title {
    color: var(--clr-white);
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.page-header .page-subtitle {
    color: var(--clr-text-light);
    font-size: 1.25rem;
}

/* Premium Page Hero (Image Background) */
.page-hero {
    position: relative;
    padding: 120px 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: var(--clr-white);
    text-align: center;
    min-height: 400px;
    display: flex;
    align-items: center;
}

.page-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.85) 0%, rgba(10, 95, 56, 0.7) 100%);
    z-index: 1;
}

.page-hero .container {
    position: relative;
    z-index: 2;
}

.page-hero .page-title {
    color: var(--clr-white);
    font-size: 3.5rem;
    margin-bottom: var(--spacing-sm);
    text-shadow: 0 4px 15px rgba(0,0,0,0.4);
}

.page-hero .page-subtitle {
    font-size: 1.25rem;
    color: #e2e8f0;
    font-weight: 300;
}

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

.content-section h2 {
    margin-top: var(--spacing-lg);
    color: var(--clr-primary-green);
}

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

.info-card {
    background: var(--clr-white);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-subtle);
}

.info-card h3 {
    color: var(--clr-accent-orange);
}

.info-card ul {
    list-style-type: disc;
    margin-left: 1.5rem;
}

.core-values-header {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding-top: var(--spacing-lg);
}

.core-values-header .section-tag {
    color: var(--clr-primary-green);
    font-size: 0.9rem;
    font-weight: 700;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.core-values-header .section-heading {
    color: var(--clr-bg-dark);
    font-size: 2.2rem;
    font-weight: 700;
    max-width: 700px;
    margin: 0 auto;
}

.values-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-lg);
    padding-bottom: var(--spacing-xl);
}

.value-card {
    flex: 1 1 220px;
    max-width: 320px;
    background: var(--clr-white);
    padding: 3rem 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.04);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.value-icon {
    width: 70px;
    height: 70px;
    margin: 0 auto 1.5rem;
    background: #f0f7f3; /* Very light subtle green like the image */
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--clr-primary-green);
}

.value-icon svg {
    width: 32px;
    height: 32px;
}

.value-card h4 {
    color: var(--clr-bg-dark);
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.value-card p {
    color: #64748b;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 2rem;
}

.card-line {
    width: 30px;
    height: 2px;
    background-color: var(--clr-primary-green);
    margin-top: auto;
}

.nav-links .active {
    color: var(--clr-primary-green) !important;
    font-weight: 800;
}

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

/* Animations extracted to animations.css */

/* Process Timeline Styles */
.process-timeline {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin: 3rem 0;
    padding-top: 1rem;
}
.timeline-step {
    background: var(--clr-white);
    border-radius: 50%;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    padding: 1rem;
    text-align: center;
    width: 180px;
    height: 180px;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}
.timeline-step:hover {
    border-color: var(--clr-primary-green);
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(10, 95, 56, 0.15);
}
.step-number {
    background: var(--clr-primary-green);
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.85rem;
    font-weight: bold;
    position: absolute;
    top: -16px;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.step-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 1rem;
    color: var(--clr-primary-green);
}
.step-icon svg {
    width: 100%;
    height: 100%;
}
.timeline-step h4 {
    font-size: 0.95rem;
    margin: 0;
    color: var(--clr-bg-dark);
}
.timeline-step-content {
    transition: opacity 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}
.timeline-step:hover .timeline-step-content {
    opacity: 0.15;
}
.timeline-step-hover-text {
    position: absolute;
    top: 55%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 85%;
    opacity: 0;
    visibility: hidden;
    color: var(--clr-bg-dark);
    font-size: 0.9rem;
    font-weight: 500;
    line-height: 1.4;
    transition: all 0.3s ease;
    text-align: center;
}
.timeline-step:hover .timeline-step-hover-text {
    opacity: 1;
    visibility: visible;
}

/* Industry Cards */
.industries-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    margin-top: 2rem;
}
.industry-card {
    background: var(--clr-white);
    padding: 1.5rem;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: all 0.3s ease;
    border-left: 4px solid transparent;
}
.industry-card:hover {
    transform: translateX(5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
    border-left-color: var(--clr-primary-green);
}
.industry-icon {
    width: 32px;
    height: 32px;
    color: var(--clr-primary-green);
    flex-shrink: 0;
}
.industry-icon svg {
    width: 100%;
    height: 100%;
}
.industry-card h4 {
    margin: 0;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--clr-text-dark);
}

/* Eco Image Wrapper */
.eco-image-wrapper {
    max-width: 650px;
    margin: 0 auto 4rem auto;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 15px 40px rgba(0,0,0,0.1);
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.4s ease;
}
.eco-image-wrapper:hover {
    transform: translateY(-12px);
    box-shadow: 0 25px 50px rgba(0,0,0,0.15);
}
.eco-image-wrapper img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.7s ease;
}
.eco-image-wrapper:hover img {
    transform: scale(1.05);
}

/* Premium Leadership Tile */
.leadership-tile {
    background: linear-gradient(135deg, var(--clr-primary-green) 0%, #064025 100%);
    color: var(--clr-white);
    border-radius: 20px;
    padding: 3rem;
    margin: 4rem auto 0 auto;
    max-width: 100%; /* Aligns with the container/banner width */
    box-shadow: 0 15px 40px rgba(10, 95, 56, 0.2);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: transform 0.4s ease, box-shadow 0.4s ease;
    gap: 1.5rem;
}
.leadership-tile:hover {
    transform: translateY(-6px);
    box-shadow: 0 25px 50px rgba(10, 95, 56, 0.3);
}
.leadership-tile::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.6s ease;
    pointer-events: none;
}
.leadership-tile:hover::before {
    opacity: 1;
}
@media (min-width: 992px) {
    .leadership-tile {
        flex-direction: row;
        text-align: left;
        padding: 3.5rem 5rem;
        gap: 4rem;
    }
    .leadership-header {
        flex: 0 0 200px;
        border-right: 2px solid rgba(255,255,255,0.15);
        padding-right: 3rem;
    }
    .leadership-icon {
        margin: 0 0 1rem 0 !important;
    }
}
.leadership-header h2 {
    color: var(--clr-white);
    margin: 0;
    font-size: 2.2rem;
}
.leadership-icon {
    width: 54px;
    height: 54px;
    margin: 0 auto 1rem auto;
    color: var(--clr-white);
    opacity: 0.9;
}
.leadership-icon svg {
    width: 100%;
    height: 100%;
}
.leadership-text p {
    font-size: 1.15rem;
    line-height: 1.8;
    color: rgba(255,255,255,0.9);
    margin: 0;
}
.timeline-arrow {
    color: var(--clr-primary-light);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.5;
}
.timeline-arrow svg {
    width: 32px;
    height: 32px;
}

/* Premium Feature Card */
.premium-feature-card {
    display: flex;
    flex-wrap: wrap;
    background: var(--clr-white);
    border-radius: 20px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.06);
    overflow: hidden;
    margin-bottom: 3rem;
}

.feature-content {
    flex: 1 1 400px;
    padding: 3rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.feature-image {
    flex: 1 1 350px;
    background: linear-gradient(135deg, #f8fafc 0%, #f0f7f3 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3rem;
}

.feature-image img {
    max-width: 100%;
    max-height: 350px;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    transform: scale(1);
    transition: transform 0.5s ease;
    object-fit: contain;
}

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

.premium-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.premium-list li {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    color: var(--clr-text-main);
    font-weight: 500;
}

.premium-list li:last-child {
    margin-bottom: 0;
}

.list-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--clr-primary-green);
    color: var(--clr-white);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    margin-top: 2px;
}

.list-icon svg {
    width: 14px;
    height: 14px;
}

/* Interactive Image Hotspots */
.diagram-wrapper {
    position: relative;
    display: inline-block;
    max-width: 100%;
}

.diagram-wrapper img {
    display: block;
    width: 100%;
    height: auto;
}

.hotspot {
    position: absolute;
    width: 9%;
    aspect-ratio: 1 / 1;
    cursor: pointer;
    border-radius: 50%;
    z-index: 10;
    transform: translate(-50%, -50%);
    background: rgba(22, 163, 98, 0.0);
    transition: all 0.3s ease;
}

.hotspot:hover {
    background: rgba(22, 163, 98, 0.15);
    box-shadow: 0 0 20px rgba(22, 163, 98, 0.4);
}

.hotspot-tooltip {
    position: absolute;
    bottom: 110%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    background: var(--clr-bg-dark);
    color: var(--clr-white);
    padding: 0.75rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    font-weight: 600;
    white-space: nowrap;
    text-align: center;
    line-height: 1.4;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 10px 25px rgba(0,0,0,0.2);
    pointer-events: none;
    z-index: 20;
}

.hotspot-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: var(--clr-bg-dark) transparent transparent transparent;
}

.hotspot:hover .hotspot-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* Media Queries extracted to responsive.css */

/* Timeline Chain Link Connectors */
.timeline-arrow {
    width: 24px;
    height: 4px;
    background-color: var(--clr-primary-green);
    border-radius: 2px;
    margin: 0 -12px;
    opacity: 0.6;
    position: relative;
    z-index: 0;
}
.timeline-arrow svg {
    display: none;
}