/* ===== SUSTAINABILITY DETAILS STYLES ===== */
html[data-bs-theme="light"] {
    --sus-bg: #ffffff;
    --sus-alt-bg: #f8f9fa;
    --sus-text: #212529;
    --sus-text-secondary: #6c757d;
    --sus-border: #dee2e6;
    --sus-shadow: 0 5px 25px rgba(0,0,0,0.08);
}

html[data-bs-theme="dark"] {
    --sus-bg: #1a1a2e;
    --sus-alt-bg: #16213e;
    --sus-text: #f8f9fa;
    --sus-text-secondary: #adb5bd;
    --sus-border: #2d3748;
    --sus-shadow: 0 5px 25px rgba(0,0,0,0.5);
}

/* Hero Section */
.sustainability-hero {
    position: relative;
    min-height: 70vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #16213e 0%, #1a1a2e 100%);
    overflow: hidden;
}

    .sustainability-hero::before {
        content: '';
        position: absolute;
        width: 100%;
        height: 100%;
        background: radial-gradient(circle at 30% 50%, rgba(237,147,0,0.1), transparent 70%);
        animation: pulse 8s ease-in-out infinite;
    }

@@keyframes pulse {
    0%, 100% {
        opacity: 0.3;
    }

    50% {
        opacity: 0.6;
    }
}

.sustainability-hero-content {
    position: relative;
    z-index: 10;
    text-align: center;
    padding: 3rem 0;
}

.sustainability-icon-large {
    font-size: 6rem;
    color: #ed9300;
    margin-bottom: 2rem;
    display: inline-block;
    animation: iconFloat 3s ease-in-out infinite;
}

@@keyframes iconFloat {
    0%, 100% {
        transform: translateY(0) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.sustainability-hero-title {
    font-size: 4rem;
    font-weight: 900;
    color: white;
    margin-bottom: 1.5rem;
    text-shadow: 0 5px 30px rgba(0,0,0,0.8);
    animation: fadeInUp 0.8s ease;
}

@@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sustainability-hero-description {
    font-size: 1.4rem;
    color: rgba(255,255,255,0.95);
    line-height: 1.9;
    max-width: 900px;
    margin: 0 auto;
    animation: fadeInUp 1s ease 0.2s both;
}

/* Statistics Section */
.statistics-section {
    padding: 80px 0;
    background: var(--sus-bg);
    margin-top: -80px;
    position: relative;
    z-index: 20;
}

.statistics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.statistic-card {
    background: var(--sus-alt-bg);
    border: 2px solid var(--sus-border);
    border-radius: 25px;
    padding: 3rem 2rem;
    text-align: center;
    box-shadow: var(--sus-shadow);
    transition: all 0.4s ease;
    position: relative;
    overflow: hidden;
}

    .statistic-card::before {
        content: '';
        position: absolute;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: conic-gradient(from 0deg, transparent, var(--stat-color), transparent);
        opacity: 0;
        transition: opacity 0.6s ease;
        animation: rotate 4s linear infinite;
    }

@@keyframes rotate {
    100% {
        transform: rotate(360deg);
    }
}

.statistic-card:hover::before {
    opacity: 0.15;
}

.statistic-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
}

.statistic-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.statistic-value {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.statistic-label {
    font-size: 1.1rem;
    color: var(--sus-text-secondary);
    font-weight: 600;
    position: relative;
    z-index: 1;
}

/* Content Section */
.sustainability-content-section {
    padding: 100px 0;
    background: var(--sus-alt-bg);
}

.sustainability-description-box {
    background: var(--sus-bg);
    border: 2px solid var(--sus-border);
    border-radius: 25px;
    padding: 3rem;
    box-shadow: var(--sus-shadow);
    margin-bottom: 4rem;
}

.description-title {
    font-size: 2rem;
    font-weight: 900;
    color: var(--sus-text);
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 1rem;
}

    .description-title::after {
        content: '';
        position: absolute;
        bottom: 0;
        right: 0;
        width: 80px;
        height: 4px;
        background: linear-gradient(90deg, #ed9300, #ffad33);
        border-radius: 2px;
    }

.description-content {
    font-size: 1.2rem;
    line-height: 2;
    color: var(--sus-text-secondary);
}

/* Features Grid */
.features-section-title {
    text-align: center;
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: var(--sus-bg);
    border: 2px solid var(--sus-border);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: var(--sus-shadow);
    transition: all 0.4s ease;
    text-align: center;
}

    .feature-card:hover {
        transform: translateY(-10px);
        border-color: #ed9300;
        box-shadow: 0 20px 60px rgba(237,147,0,0.2);
    }

.feature-icon {
    width: 90px;
    height: 90px;
    background: linear-gradient(135deg, #ed9300, #ffad33);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all 0.4s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon i {
    font-size: 2.5rem;
    color: white;
}

.feature-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--sus-text);
    margin-bottom: 1rem;
}

.feature-description {
    font-size: 1.05rem;
    color: var(--sus-text-secondary);
    line-height: 1.8;
}

/* Related Projects Section */
.related-projects-section {
    padding: 100px 0;
    background: var(--sus-bg);
}

.section-header {
    margin-bottom: 3rem;
}

.section-badge {
    display: inline-block;
    background: linear-gradient(135deg, rgba(237,147,0,0.1), rgba(237,147,0,0.05));
    color: #ed9300;
    padding: 10px 25px;
    border-radius: 25px;
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 1rem;
    border: 2px solid rgba(237,147,0,0.3);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.section-title {
    font-size: 2.8rem;
    font-weight: 900;
    color: var(--sus-text);
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.15rem;
    color: var(--sus-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.7;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.project-card {
    background: var(--sus-alt-bg);
    border: 2px solid var(--sus-border);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--sus-shadow);
    transition: all 0.4s ease;
}

    .project-card:hover {
        transform: translateY(-10px);
        box-shadow: 0 25px 70px rgba(237,147,0,0.3);
        border-color: #ed9300;
    }

.project-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

    .project-image img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.6s ease;
    }

.project-card:hover .project-image img {
    transform: scale(1.15);
}

.project-status-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 8px 20px;
    border-radius: 25px;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    backdrop-filter: blur(10px);
    border: 2px solid rgba(255,255,255,0.3);
}

.status-completed {
    background: rgba(34, 197, 94, 0.95);
    color: white;
}

.status-ongoing {
    background: rgba(59, 130, 246, 0.95);
    color: white;
}

.project-badges {
    position: absolute;
    top: 15px;
    left: 15px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.badge-small {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    backdrop-filter: blur(10px);
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    border: 2px solid rgba(255,255,255,0.3);
}

.badge-prize {
    background: rgba(234, 179, 8, 0.95);
    color: white;
}

.badge-important {
    background: rgba(239, 68, 68, 0.95);
    color: white;
}

.project-content {
    padding: 2rem;
}

.project-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.project-meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--sus-text-secondary);
    font-weight: 600;
}

    .project-meta-item i {
        color: #ed9300;
        font-size: 1.1rem;
    }

.project-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--sus-text);
    margin-bottom: 1rem;
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-description {
    font-size: 1rem;
    color: var(--sus-text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-link {
    color: #ed9300;
    font-weight: 700;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    font-size: 1.05rem;
}

    .project-link:hover {
        gap: 1rem;
        color: #ffad33;
    }

    .project-link i {
        transition: transform 0.3s ease;
    }

    .project-link:hover i {
        transform: translateX(-5px);
    }

/* Empty State */
.empty-state {
    text-align: center;
    padding: 5rem 0;
}

    .empty-state i {
        font-size: 6rem;
        color: var(--sus-text-secondary);
        opacity: 0.2;
        margin-bottom: 2rem;
    }

.empty-state-text {
    font-size: 1.3rem;
    color: var(--sus-text-secondary);
    font-weight: 600;
}

/* Responsive */
@media (max-width: 768px) {
    .sustainability-hero {
        min-height: 50vh;
    }

    .sustainability-hero-title {
        font-size: 2.5rem;
    }

    .sustainability-icon-large {
        font-size: 4rem;
    }

    .statistics-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .projects-grid {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    .statistics-grid {
        grid-template-columns: 1fr;
    }

    .statistic-card {
        padding: 2rem 1.5rem;
    }
}