:root {
    --primary: #00BCD4;
    --primary-hover: #0097A7;
    --secondary: #596778;
    --bg-main: #FAFAFA;
    --bg-white: #FFFFFF;
    --text-main: #1F2937;
    --text-light: #6B7280;
    --border: #E5E7EB;
    --footer-bg: #1E293B;
    --footer-text: #CBD5E1;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    z-index: 100;
    text-decoration: none;
}

    .skip-link:focus {
        top: 10px;
        left: 10px;
    }

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* HEADER */
.site-header {
    position: sticky;
    top: 0;
    z-index: 40;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--border);
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: bold;
}

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

.logo-tools {
    color: var(--secondary);
}

.main-nav {
    display: none;
    gap: 24px;
}

.nav-link {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

.header-actions {
    display: none;
    align-items: center;
    gap: 16px;
}

.btn-primary {
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    border-radius: 6px;
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: background 0.2s;
    border: none;
    cursor: pointer;
}

    .btn-primary:hover {
        background: var(--primary-hover);
    }

.mobile-menu-btn {
    display: block;
    background: none;
    border: none;
    color: var(--secondary);
    cursor: pointer;
    padding: 8px;
}

.mobile-menu {
    display: none;
    background: white;
    border-top: 1px solid var(--border);
    padding: 16px;
}

    .mobile-menu.active {
        display: block;
    }

    .mobile-menu a {
        display: block;
        padding: 12px;
        color: var(--text-light);
        text-decoration: none;
        border-radius: 6px;
    }

        .mobile-menu a:hover {
            background: #F3F4F6;
            color: var(--primary);
        }

main {
    flex: 1;
    width: 100%;
}

/* HERO SECTION */
.hero-section {
    background: linear-gradient(135deg, #FAFAFA 0%, #F0F9FF 100%);
    padding: 80px 0 60px;
    position: relative;
    overflow: hidden;
}

    .hero-section::before {
        content: '';
        position: absolute;
        top: -50%;
        right: -10%;
        width: 600px;
        height: 600px;
        background: radial-gradient(circle, rgba(0, 188, 212, 0.1) 0%, transparent 70%);
        border-radius: 50%;
    }

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    padding: 8px 16px;
    border-radius: 24px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
    margin-bottom: 24px;
    font-size: 14px;
    font-weight: 600;
}

.badge-icon {
    font-size: 18px;
}

.badge-text {
    color: #596778;
}

.hero-title {
    font-size: 48px;
    font-weight: 800;
    color: #1F2937;
    line-height: 1.2;
    margin-bottom: 20px;
}

.highlight {
    background: linear-gradient(135deg, #00BCD4 0%, #0097A7 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    color: #6B7280;
    line-height: 1.7;
    margin-bottom: 32px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.btn-hero-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #00BCD4 0%, #0097A7 100%);
    color: white;
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 188, 212, 0.3);
}

    .btn-hero-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 188, 212, 0.4);
    }

.btn-hero-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    color: #596778;
    padding: 14px 28px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    border: 2px solid #E5E7EB;
    transition: all 0.3s;
}

    .btn-hero-secondary:hover {
        border-color: #00BCD4;
        color: #00BCD4;
    }

.hero-stats {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 32px;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 36px;
    font-weight: 800;
    color: #00BCD4;
    line-height: 1;
    margin-bottom: 4px;
}

.stat-label {
    font-size: 14px;
    color: #6B7280;
    font-weight: 500;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: #E5E7EB;
}

/* CHARITY SECTION */
.charity-section {
    padding: 40px 0;
    background: white;
}

.charity-card {
    background: linear-gradient(135deg, #FEF3C7 0%, #FDE68A 100%);
    border-radius: 16px;
    padding: 32px;
    display: flex;
    align-items: center;
    gap: 24px;
    position: relative;
    overflow: hidden;
    border: 2px solid #FCD34D;
}

.charity-icon {
    font-size: 48px;
    flex-shrink: 0;
}

.charity-content {
    flex: 1;
}

.charity-title {
    font-size: 24px;
    font-weight: 700;
    color: #92400E;
    margin-bottom: 8px;
}

.charity-description {
    font-size: 15px;
    color: #78350F;
    line-height: 1.6;
}

/* CATEGORIES SECTION */
.categories-section {
    padding: 80px 0;
    background: #FAFAFA;
}

.section-header {
    text-align: center;
    margin-bottom: 48px;
}

.section-title {
    font-size: 36px;
    font-weight: 800;
    color: #1F2937;
    margin-bottom: 12px;
}

.section-description {
    font-size: 16px;
    color: #6B7280;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.category-card {
    background: white;
    border-radius: 12px;
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    text-decoration: none;
    transition: all 0.3s;
    border: 2px solid transparent;
    position: relative;
}

    .category-card:hover {
        transform: translateY(-4px);
        box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
        border-color: #00BCD4;
    }

.category-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    flex-shrink: 0;
}

.category-info {
    flex: 1;
}

.category-name {
    font-size: 18px;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 4px;
}

.category-description {
    font-size: 13px;
    color: #6B7280;
    margin-bottom: 8px;
}

.category-count {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.count-number {
    font-size: 20px;
    font-weight: 800;
    color: #00BCD4;
}

.count-label {
    font-size: 13px;
    color: #9CA3AF;
}

.category-arrow {
    color: #D1D5DB;
    transition: all 0.3s;
}

.category-card:hover .category-arrow {
    color: #00BCD4;
    transform: translateX(4px);
}

/* TOOLS SECTION */
.tools-section {
    padding: 80px 0;
    background: white;
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}

.tool-card {
    background: #FAFAFA;
    border-radius: 12px;
    padding: 24px;
    display: flex;
    gap: 16px;
    text-decoration: none;
    transition: all 0.3s;
    border: 2px solid transparent;
}

    .tool-card:hover {
        background: white;
        border-color: #00BCD4;
        transform: translateY(-4px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    }

.tool-icon {
    font-size: 32px;
    flex-shrink: 0;
}

.tool-info {
    flex: 1;
}

.tool-name {
    font-size: 16px;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 4px;
}

.tool-description {
    font-size: 13px;
    color: #6B7280;
    margin-bottom: 8px;
}

.tool-category {
    font-size: 12px;
    color: #00BCD4;
    font-weight: 600;
}

/* FAQ SECTION */
.faq-section {
    padding: 80px 0;
    background: #FAFAFA;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 16px;
    border: 2px solid transparent;
    transition: all 0.3s;
}

    .faq-item:hover {
        border-color: #00BCD4;
    }

.faq-question {
    font-size: 18px;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 12px;
}

.faq-answer {
    font-size: 15px;
    color: #6B7280;
    line-height: 1.6;
}

/* CTA SECTION */
.cta-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #00BCD4 0%, #0097A7 100%);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    font-size: 36px;
    font-weight: 800;
    color: white;
    margin-bottom: 16px;
}

.cta-description {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
}

.btn-cta {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: white;
    color: #00BCD4;
    padding: 16px 32px;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 700;
    font-size: 16px;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

    .btn-cta:hover {
        transform: translateY(-2px);
        box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    }

/* FEATURES SECTION */
.features-section {
    padding: 80px 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.feature-card {
    background: #FAFAFA;
    border-radius: 12px;
    padding: 32px;
    text-align: center;
    transition: all 0.3s;
    border: 2px solid transparent;
}

    .feature-card:hover {
        background: white;
        border-color: #00BCD4;
        transform: translateY(-4px);
        box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    }

.feature-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: #1F2937;
    margin-bottom: 12px;
}

.feature-description {
    font-size: 14px;
    color: #6B7280;
    line-height: 1.6;
}

/* FOOTER */
.site-footer {
    background: var(--footer-bg);
    color: var(--footer-text);
    margin-top: auto;
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 400px;
    margin-top: 16px;
    color: #94A3B8;
}

.footer-heading {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #F1F5F9;
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

    .footer-links a {
        color: #94A3B8;
        text-decoration: none;
        font-size: 0.9rem;
        transition: color 0.2s;
    }

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

.footer-bottom {
    border-top: 1px solid #334155;
    padding-top: 24px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: #94A3B8;
}

/* RESPONSIVE */
@media (min-width: 768px) {
    .main-nav {
        display: flex;
    }

    .header-actions {
        display: flex;
    }

    .mobile-menu-btn {
        display: none;
    }

    .footer-grid {
        grid-template-columns: 2fr 1fr 1fr;
    }

    .footer-bottom {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 32px;
    }

    .hero-description {
        font-size: 16px;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-number {
        font-size: 28px;
    }

    .charity-card {
        flex-direction: column;
        text-align: center;
    }

    .section-title {
        font-size: 28px;
    }

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

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

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

    .cta-title {
        font-size: 28px;
    }
}