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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    line-height: 1.6;
    color: #333;
    background: #ffffff;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
}

p {
    margin-bottom: 1rem;
    line-height: 1.7;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 28px;
    border: none;
    border-radius: 50px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
}

.btn--primary {
    background: linear-gradient(135deg, #007BFF 0%, #0056CC 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(0, 123, 255, 0.3);
}

.btn--primary:hover {
    background: linear-gradient(135deg, #0056CC 0%, #004099 100%);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 123, 255, 0.4);
}

.btn--secondary {
    background: transparent;
    color: #007BFF;
    border: 2px solid #007BFF;
}

.btn--secondary:hover {
    background: #007BFF;
    color: white;
}

.btn--large {
    padding: 18px 36px;
    font-size: 18px;
}

.btn--full {
    width: 100%;
}

/* Header */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo h1 {
    font-size: 1.8rem;
    background: linear-gradient(135deg, #007BFF, #0056CC);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav__link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav__link:hover {
    color: #007BFF;
}

.nav__link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: #007BFF;
    transition: width 0.3s ease;
}

.nav__link:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
    border-radius: 3px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero__content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
}

.hero__title {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.hero__subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.9;
    font-weight: 300;
}

.hero__description {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    opacity: 0.9;
    line-height: 1.8;
}

.hero__buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* Mission Section */
.mission {
    padding: 80px 0;
    background: #f8f9fa;
    text-align: center;
}

.mission__title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: #007BFF;
}

.mission__text {
    font-size: 1.2rem;
    max-width: 900px;
    margin: 0 auto 3rem;
    line-height: 1.8;
    color: #555;
}

.mission__cta {
    margin-top: 2rem;
}

.cta__note {
    margin-top: 1rem;
    color: #666;
    font-size: 0.9rem;
}

/* Section Titles */
.section__title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: #333;
    position: relative;
}

.section__title::after {
    content: '';
    position: absolute;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, #007BFF, #0056CC);
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
}

/* Activities Section */
.activities {
    padding: 80px 0;
}

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

.activity__card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.activity__card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #007BFF, #0056CC);
}

.activity__card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.activity__icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

.activity__title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #333;
}

.activity__text {
    color: #666;
    line-height: 1.6;
}

/* Goals Section */
.goals {
    padding: 80px 0;
    background: #f8f9fa;
}

.goals__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 2rem;
}

.goal__card {
    background: white;
    padding: 3rem 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.goal__title {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: #007BFF;
    line-height: 1.4;
}

.goal__text {
    color: #666;
    line-height: 1.7;
}

/* Team Section */
.team {
    padding: 80px 0;
}

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

.team__card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: all 0.3s ease;
}

.team__card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.team__avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007BFF, #0056CC);
    color: white;
    font-size: 2rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.team__name {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.team__role {
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

/* Join Section */
.join {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    text-align: center;
}

.join__title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.join__subtitle {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal__content {
    background: white;
    margin: 3% auto;
    padding: 3rem;
    border-radius: 20px;
    width: 90%;
    max-width: 500px;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal__close {
    position: absolute;
    right: 1.5rem;
    top: 1.5rem;
    font-size: 2rem;
    cursor: pointer;
    color: #999;
    transition: color 0.3s ease;
}

.modal__close:hover {
    color: #333;
}

.modal__title {
    margin-bottom: 2rem;
    color: #333;
    text-align: center;
}

.join__form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form__group {
    display: flex;
    flex-direction: column;
}

.form__group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form__group input,
.form__group textarea {
    padding: 12px 15px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form__group input:focus,
.form__group textarea:focus {
    outline: none;
    border-color: #007BFF;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form__group textarea {
    resize: vertical;
    min-height: 120px;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: white;
    padding: 3rem 0 1rem;
}

.footer__content {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 2rem;
}

.footer__brand h3 {
    background: linear-gradient(135deg, #007BFF, #0056CC);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.footer__brand p {
    opacity: 0.8;
}

.footer__links {
    display: flex;
    gap: 2rem;
}

.footer__links a {
    color: white;
    text-decoration: none;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.footer__links a:hover {
    opacity: 1;
    color: #007BFF;
}

.footer__bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    opacity: 0.6;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero__content > * {
    animation: fadeInUp 0.8s ease forwards;
}

.hero__title {
    animation-delay: 0.2s;
}

.hero__subtitle {
    animation-delay: 0.4s;
}

.hero__description {
    animation-delay: 0.6s;
}

.hero__buttons {
    animation-delay: 0.8s;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background: white;
        flex-direction: column;
        justify-content: flex-start;
        padding: 2rem;
        transition: left 0.3s ease;
        box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    }

    .nav.nav--active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hamburger.hamburger--active span:nth-child(1) {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.hamburger--active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.hamburger--active span:nth-child(3) {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .hero__title {
        font-size: 2.5rem;
    }

    .hero__subtitle {
        font-size: 1.2rem;
    }

    .hero__buttons {
        flex-direction: column;
        align-items: center;
    }

    .section__title {
        font-size: 2rem;
    }

    .goals__grid {
        grid-template-columns: