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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #667eea 100%);
    min-height: 100vh;
    color: #ffffff;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

.header {
    padding: 20px 0;
    background: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    font-size: 1.8rem;
}

.nav {
    display: flex;
    gap: 30px;
    align-items: center;
}

.nav a {
    color: #ffffff;
    text-decoration: none;
    transition: opacity 0.3s ease;
    font-weight: 500;
}

.nav a:hover {
    opacity: 0.8;
}

.btn-nav {
    background: rgba(255, 255, 255, 0.2);
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.main-content {
    padding: 60px 20px;
}

.container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 40px;
    align-items: start;
}

.form-section {
    display: flex;
    justify-content: center;
}

.form-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    border-radius: 20px;
    padding: 40px;
    max-width: 500px;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.form-card h1 {
    font-size: 2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.subtitle {
    opacity: 0.9;
    margin-bottom: 30px;
    font-size: 0.95rem;
}

.signup-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.9rem;
    font-weight: 500;
    opacity: 0.9;
}

.form-group input {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    padding: 12px 15px;
    color: #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.form-group input:focus {
    outline: none;
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.5);
}

.password-input {
    position: relative;
    display: flex;
    align-items: center;
}

.password-input input {
    width: 100%;
    padding-right: 45px;
}

.toggle-password {
    position: absolute;
    right: 12px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    padding: 5px;
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

.toggle-password:hover {
    opacity: 1;
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: #667eea;
}

.checkbox-group label {
    font-size: 0.9rem;
    opacity: 0.9;
    cursor: pointer;
}

.btn-submit {
    background: #ffffff;
    color: #667eea;
    border: none;
    border-radius: 25px;
    padding: 14px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-top: 10px;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 10px 0;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

.divider span {
    padding: 0 15px;
    font-size: 0.9rem;
    opacity: 0.8;
}

.social-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.btn-social {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 10px;
    padding: 12px;
    color: #ffffff;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
}

.btn-social:hover {
    background: rgba(255, 255, 255, 0.25);
}

.social-icon {
    font-weight: 700;
    font-size: 1.2rem;
}

.signin-link {
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.9;
    margin-top: 10px;
}

.signin-link a {
    color: #ffffff;
    font-weight: 600;
    text-decoration: underline;
}

.features-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.feature-mini-card {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all 0.3s ease;
}

.feature-mini-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.2);
}

.feature-mini-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.feature-mini-card h3 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.feature-mini-card p {
    font-size: 0.9rem;
    opacity: 0.9;
    line-height: 1.5;
}

.footer {
    margin-top: 60px;
    padding: 30px 20px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    background: rgba(0, 0, 0, 0.1);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 15px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 25px;
}

.footer-links a {
    color: #ffffff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

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

.copyright {
    text-align: center;
    font-size: 0.85rem;
    opacity: 0.7;
    max-width: 1400px;
    margin: 0 auto;
}

@media (max-width: 768px) {
    .nav {
        gap: 15px;
    }

    .nav a:not(.btn-nav) {
        display: none;
    }

    .form-card {
        padding: 30px 25px;
    }

    .form-card h1 {
        font-size: 1.8rem;
    }

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

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-links {
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 15px;
    }

    .logo {
        font-size: 1.3rem;
    }

    .form-card {
        padding: 25px 20px;
    }

    .form-card h1 {
        font-size: 1.6rem;
    }

    .form-group input {
        padding: 11px 13px;
        font-size: 0.95rem;
    }

    .btn-submit {
        padding: 12px;
    }

    .feature-mini-card {
        padding: 20px;
    }
}

@media (min-width: 1024px) {
    .main-content .container {
        grid-template-columns: 1fr 1fr;
        gap: 60px;
    }

    .form-section {
        justify-content: flex-end;
    }

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