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

:root {
    --primary-orange: #fba74f;
    --secondary-orange: #e09646;
    --dark-bg: #0F172A;
    --card-bg: #1E293B;
    --text-light: #F8FAFC;
    --text-gray: #94A3B8;
    --success-green: #10B981;
    --crypto-gold: #F7931A;

    /* Category Colors */
    --finance-primary: #fbbf24;
    --finance-secondary: #f97316;
    --utilities-primary: #60a5fa;
    --utilities-secondary: #1d4ed8;
    --productivity-primary: #34d399;
    --productivity-secondary: #047857;
    --education-primary: #c084fc;
    --education-secondary: #7e22ce;
    --tools-primary: #2dd4bf;
    --tools-secondary: #0f766e;
    --health-primary: #f472b6;
    --health-secondary: #be185d;
    --games-primary: #a78bfa;
    --games-secondary: #6d28d9;
    --default-primary: #94a3b8;
    --default-secondary: #334155;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%);
    color: var(--text-light);
    line-height: 1.6;
    min-height: 100vh;
}

/* Header Styles */
header {
    padding: 2rem;
    border-bottom: 1px solid rgba(251, 167, 79, 0.2);
    position: sticky;
    top: 0;
    background: rgba(15, 23, 42, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
}

.header-wrapper {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.logo-img {
    width: 80px;
    height: 80px;
    border-radius: 20%;
}

.logo {
    font-size: 2.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.2rem;
}

.tagline {
    color: var(--text-gray);
    font-size: 1.1rem;
}

.language-switcher {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.lang-flag {
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0.5;
    transition: all 0.3s ease;
    filter: grayscale(100%);
}

.lang-flag:hover,
.lang-flag.active {
    opacity: 1;
    filter: grayscale(0%);
    transform: scale(1.2);
}

/* Hero/About Section */
.hero {
    padding: 3rem 2rem;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-gray);
    line-height: 1.8;
    margin-bottom: 1rem;
}

/* About Section */
.about-section {
    padding: 3rem 2rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 2rem;
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.about-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
}

.about-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.about-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--primary-orange);
}

.about-card p {
    color: var(--text-gray);
    font-size: 0.95rem;
}

/* Hero Text (without title) */
.hero-text {
    padding: 0.25rem 2rem 1rem;
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-text p {
    font-size: 1.2rem;
    color: var(--text-gray);
    line-height: 1.8;
}

/* Projects Section */
.projects-section {
    padding: 3rem 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

/* Category Filters */
.category-filters {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 2rem;
}

.filter-btn {
    padding: 0.8rem 1.5rem;
    border: 2px solid rgba(251, 167, 79, 0.3);
    background: var(--card-bg);
    color: var(--text-light);
    border-radius: 25px;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.filter-btn:hover {
    border-color: var(--primary-orange);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    border-color: var(--primary-orange);
    box-shadow: 0 4px 16px rgba(251, 167, 79, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}

@media (min-width: 1200px) {
    .projects-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.project-card {
    background: var(--card-bg);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 16px 48px rgba(251, 167, 79, 0.3);
}

.project-card.hidden {
    display: none;
}

.project-image {
    width: 100%;
    height: 180px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    position: relative;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    color: rgba(255, 255, 255, 0.95);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

/* Category-based gradients */
.project-image.finance {
    background: linear-gradient(135deg, var(--finance-secondary), var(--finance-primary));
}

.project-image.utilities {
    background: linear-gradient(135deg, var(--utilities-secondary), var(--utilities-primary));
}

.project-image.productivity {
    background: linear-gradient(135deg, var(--productivity-secondary), var(--productivity-primary));
}

.project-image.education {
    background: linear-gradient(135deg, var(--education-secondary), var(--education-primary));
}

.project-image.tools {
    background: linear-gradient(135deg, var(--tools-secondary), var(--tools-primary));
}

.project-image.health {
    background: linear-gradient(135deg, var(--health-secondary), var(--health-primary));
}

.project-image.games {
    background: linear-gradient(135deg, var(--games-secondary), var(--games-primary));
}

.project-image.default {
    background: linear-gradient(135deg, var(--default-secondary), var(--default-primary));
}

.project-category {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(15, 23, 42, 0.9);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    backdrop-filter: blur(10px);
}

.project-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--primary-orange);
}

.project-description {
    color: var(--text-gray);
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.project-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.project-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(251, 167, 79, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    transition: all 0.3s ease;
    color: var(--text-light);
}

.project-link svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

.project-link:hover {
    background: var(--primary-orange);
    transform: scale(1.1);
}

/* Impact Section (for donate page) */
.impact-section {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.impact-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.impact-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.impact-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-orange);
    margin-bottom: 0.5rem;
}

.impact-label {
    color: var(--text-gray);
}

.cost-breakdown {
    background: rgba(251, 167, 79, 0.1);
    border-left: 4px solid var(--primary-orange);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0;
}

.cost-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.cost-item:last-child {
    border-bottom: none;
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--primary-orange);
}

/* Donation Methods (for donate page) */
.donation-methods {
    padding: 3rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.methods-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.method-card {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-orange), var(--secondary-orange));
}

.method-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 16px 48px rgba(251, 167, 79, 0.3);
}

.method-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.method-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.method-description {
    color: var(--text-gray);
    margin-bottom: 1.5rem;
}

.qr-code {
    width: 280px;
    height: 280px;
    background: white;
    margin: 1rem auto;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    color: #333;
    padding: 1rem;
    text-align: center;
}

.qr-code img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.wallet-address {
    background: rgba(0, 0, 0, 0.3);
    padding: 1rem;
    border-radius: 8px;
    font-family: monospace;
    font-size: 0.85rem;
    word-break: break-all;
    margin: 1rem 0;
    cursor: pointer;
    transition: background 0.3s ease;
    width: 100%;
}

.wallet-address:hover {
    background: rgba(251, 167, 79, 0.2);
}

.copy-btn {
    background: linear-gradient(135deg, var(--primary-orange), var(--secondary-orange));
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 700;
    font-size: 1.1rem;
    transition: transform 0.3s ease;
    margin-top: 0.5rem;
    width: 100%;
    max-width: 300px;
}

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

.badges-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.network-badge {
    display: inline-block;
    padding: 0.3rem 0.8rem;
    background: rgba(16, 185, 129, 0.2);
    color: var(--success-green);
    border-radius: 20px;
    font-size: 0.85rem;
    margin: 0;
}

/* Footer */
footer {
    padding: 3rem 2rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.8);
    border-top: 1px solid rgba(251, 167, 79, 0.2);
    margin-top: 4rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-gray);
    text-decoration: none;
    transition: color 0.3s ease;
    font-size: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-links a svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

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

.footer-info {
    color: var(--text-gray);
    margin-top: 1rem;
}

.footer-info a {
    color: var(--primary-orange);
    text-decoration: none;
    transition: opacity 0.3s ease;
}

.footer-info a:hover {
    opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
    header {
        padding: 1.5rem;
    }

    .header-wrapper {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }

    .hero h1 {
        font-size: 2rem;
    }

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

    .logo {
        font-size: 2rem;
    }

    .logo-img {
        width: 60px;
        height: 60px;
    }

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

    .category-filters {
        gap: 0.5rem;
    }

    .filter-btn {
        padding: 0.6rem 1rem;
        font-size: 0.85rem;
    }

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

@media (max-width: 480px) {

    .hero,
    .hero-text {
        padding: 2rem 1rem;
    }

    .projects-section,
    .about-section {
        padding: 2rem 1rem;
    }

    .project-image {
        height: 150px;
        font-size: 1.5rem;
    }
}