:root {
    --primary-black: #0a0a0a;
    --secondary-gray: #6b7280;
    --light-gray: #f8fafc;
    --pure-white: #ffffff;
    --accent-green: #059669;
    --accent-emerald: #10b981;
    --accent-orange: #ea580c;
    --accent-red: #dc2626;
    --subtle-border: #e5e7eb;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --gradient-primary: linear-gradient(135deg, #059669 0%, #10b981 100%);
    --gradient-heat: linear-gradient(135deg, #ea580c 0%, #dc2626 100%);
    --gradient-cool: linear-gradient(135deg, #0ea5e9 0%, #06b6d4 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--pure-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--subtle-border);
    z-index: 1000;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-family: 'Poppins', sans-serif;
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.025em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-logo-img {
    height: 64px;
    width: auto;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 40px;
}

.nav-links a {
    font-size: 15px;
    font-weight: 500;
    color: var(--text-primary);
    text-decoration: none;
    opacity: 0.8;
    transition: all 0.2s ease;
}

.nav-links a:hover {
    opacity: 1;
    color: var(--accent-green);
}

/* Breadcrumb */
.breadcrumb {
    padding: 100px 24px 40px;
    background: var(--light-gray);
}

.breadcrumb-inner {
    max-width: 1200px;
    margin: 0 auto;
}

.breadcrumb-nav {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.breadcrumb-nav a {
    color: var(--accent-green);
    text-decoration: none;
}

.page-title {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.page-subtitle {
    font-size: 20px;
    color: var(--text-secondary);
    max-width: 600px;
}

/* Hero Section */
.hero {
    position: relative;
    height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
                url('../images/heat-crisis.jpg');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    z-index: -1;
}

.hero-content {
    text-align: center;
    color: white;
    max-width: 800px;
    padding: 40px 24px;
    background: rgba(0, 0, 0, 0.15);
    border-radius: 12px;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
    z-index: 2;
}

.hero-headline {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(36px, 5vw, 56px);
    font-weight: 700;
    margin-bottom: 20px;
    text-shadow:
        0 2px 4px rgba(0, 0, 0, 0.7),
        0 4px 8px rgba(0, 0, 0, 0.3),
        0 0 0 1px rgba(255, 255, 255, 0.1);
    color: #ffffff;
}

.hero-description {
    font-size: 20px;
    opacity: 0.95;
    text-shadow:
        0 2px 4px rgba(0, 0, 0, 0.7),
        0 4px 8px rgba(0, 0, 0, 0.3);
    color: #f9fafb;
    line-height: 1.6;
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Overview Section */
.overview {
    padding: 80px 0;
}

.overview-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: start;
}

.overview-content h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 36px;
    font-weight: 700;
    margin-bottom: 24px;
    color: var(--text-primary);
}

.overview-content p {
    font-size: 18px;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.overview-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-top: 40px;
}

.stat-box {
    background: var(--light-gray);
    padding: 24px;
    border-radius: 16px;
    text-align: center;
}

.stat-number {
    font-family: 'Poppins', sans-serif;
    font-size: 32px;
    font-weight: 700;
    background: var(--gradient-heat);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: block;
}

.stat-label {
    font-size: 14px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.overview-visual {
    background: var(--light-gray);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
}

.infographic {
    width: 100%;
    max-width: 300px;
    margin: 0 auto;
}

/* Image Slider Section */
.image-slider-section {
    padding: 80px 0;
    border-bottom: 1px solid var(--subtle-border);
}

.slider-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.slider-header {
    text-align: center;
    margin-bottom: 60px;
}

.slider-title {
    font-family: 'Poppins', sans-serif;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.slider-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.slider-wrapper {
    position: relative;
    margin-bottom: 40px;
    overflow: hidden;
    border-radius: 20px;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.slide {
    display: none;
    position: relative;
    transition: opacity 0.5s ease-in-out;
}

.slide.active {
    display: block;
}

.slide img {
    width: 100%;
    height: 400px;
    object-fit: contain;
    object-position: center;
    border-radius: 20px 20px 0 0;
    transition: transform 0.3s ease;
    background-color: var(--light-gray);
    display: block;
}

.slide img:hover {
    transform: scale(1.02);
}

/* Fallback for missing images */
.slide img[src=""] {
    display: none;
}

.slide-content {
    background: white;
    padding: 32px;
    border-radius: 0 0 20px 20px;
}

.slide-title {
    font-family: 'Poppins', sans-serif;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.slide-description {
    font-size: 16px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.slider-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.9);
    border: none;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 24px;
    color: var(--accent-green);
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.slider-nav:hover {
    background: white;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.slider-nav.prev {
    left: 20px;
}

.slider-nav.next {
    right: 20px;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: var(--subtle-border);
    border-radius: 2px;
    overflow: hidden;
    margin-bottom: 24px;
}

.progress {
    height: 100%;
    background: var(--gradient-primary);
    width: 0%;
    transition: width 0.1s linear;
}

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 12px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--subtle-border);
    cursor: pointer;
    transition: all 0.2s ease;
}

.dot.active,
.dot:hover {
    background: var(--accent-green);
}

/* Section Styles */
.section {
    padding: 80px 0;
    border-bottom: 1px solid var(--subtle-border);
}

.section:last-child {
    border-bottom: none;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-family: 'Poppins', sans-serif;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.section-description {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Articles Grid */
.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.article-card {
    background: white;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.article-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.article-image {
    height: 200px;
    background-size: cover;
    background-position: center;
}

.article-content {
    padding: 24px;
}

.article-meta {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.article-title {
    font-family: 'Poppins', sans-serif;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.article-excerpt {
    font-size: 16px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.article-link {
    color: var(--accent-green);
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Interviews Section */
.interviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 40px;
}

.interview-card {
    background: white;
    border-radius: 20px;
    padding: 32px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.interview-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}

.interview-type {
    padding: 6px 12px;
    background: var(--gradient-primary);
    color: white;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.interview-date {
    font-size: 14px;
    color: var(--text-secondary);
}

.interview-title {
    font-family: 'Poppins', sans-serif;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 12px;
}

.interview-description {
    color: var(--text-secondary);
    margin-bottom: 20px;
    line-height: 1.6;
}

.interview-actions {
    display: flex;
    gap: 12px;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    font-size: 14px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-secondary {
    background: transparent;
    color: var(--accent-green);
    border: 1px solid var(--accent-green);
}

.btn:hover {
    transform: translateY(-2px);
}

/* Research Section */
.research-grid {
    display: grid;
    gap: 40px;
}

.research-item {
    background: white;
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.research-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 24px;
}

.research-info h3 {
    font-family: 'Poppins', sans-serif;
    font-size: 24px;
    font-weight: 600;
    margin-bottom: 8px;
}

.research-category {
    color: var(--text-secondary);
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.research-status {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.status-published {
    background: #dcfce7;
    color: #166534;
}

.status-ongoing {
    background: #fef3c7;
    color: #92400e;
}

.research-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.research-highlights {
    background: var(--light-gray);
    padding: 20px;
    border-radius: 12px;
    margin-bottom: 24px;
}

.research-highlights h4 {
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.research-highlights ul {
    list-style: none;
    padding: 0;
}

.research-highlights li {
    padding: 4px 0;
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
}

.research-highlights li::before {
    content: "•";
    color: var(--accent-green);
    font-weight: bold;
    position: absolute;
    left: 0;
}

/* App Section */
.app-section {
    background: var(--light-gray);
}

.app-showcase {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.app-info h2 {
    font-family: 'Poppins', sans-serif;
    font-size: 40px;
    font-weight: 700;
    margin-bottom: 20px;
}

.app-description {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 32px;
}

.app-features {
    margin-bottom: 32px;
}

.app-features h3 {
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.features-list {
    display: grid;
    gap: 12px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
}

.feature-icon {
    width: 20px;
    height: 20px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 12px;
    font-weight: bold;
}

.app-actions {
    display: flex;
    gap: 16px;
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

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

.phone-mockup {
    max-width: 300px;
    width: 100%;
    height: 600px;
    background: linear-gradient(135deg, #1f2937 0%, #374151 100%);
    border-radius: 40px;
    padding: 20px;
    position: relative;
    margin: 0 auto;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: white;
    border-radius: 30px;
    overflow: hidden;
    position: relative;
}

.app-interface {
    height: 100%;
    background: linear-gradient(180deg, #0ea5e9 0%, #06b6d4 50%, #059669 100%);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    color: white;
    font-size: 14px;
    text-align: center;
    padding: 20px;
}

/* Footer */
.footer {
    background: var(--text-primary);
    color: white;
    padding: 40px 0;
    margin-top: 80px;
}

.footer-inner {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 24px;
}

.footer-links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.2s ease;
}

.footer-links a:hover {
    opacity: 1;
}

.footer-copyright {
    opacity: 0.6;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .slide img {
        height: 350px;
    }
}

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

    .overview-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .articles-grid,
    .interviews-grid {
        grid-template-columns: 1fr;
    }

    .app-showcase {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .research-header {
        flex-direction: column;
        gap: 16px;
    }

    .app-actions {
        flex-direction: column;
    }

    .slider-nav {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }

    .slider-nav.prev {
        left: 10px;
    }

    .slider-nav.next {
        right: 10px;
    }

    .slide img {
        height: 300px;
    }

    .slider-wrapper {
        margin: 0 -24px;
        border-radius: 0;
    }

    .slide img {
        border-radius: 0;
    }

    .slide-content {
        border-radius: 0;
        margin: 0 24px;
    }
}

@media (max-width: 480px) {
    .slide img {
        height: 250px;
    }

    .slide-content {
        padding: 24px 16px;
    }

    .slider-nav {
        width: 35px;
        height: 35px;
        font-size: 16px;
    }
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

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

/* Hide specific sections */
#interviews,
#research {
    display: none;
}