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

body {
    background: #f6f7fb;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: 'Inter', sans-serif;
}

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

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    margin: 1rem 0;
    padding: 1rem 2rem;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-icon {
    font-size: 2rem;
    animation: pulse 2s infinite;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.nav-link:hover,
.nav-link.active {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    transform: translateY(-2px);
}

/* Main Content */
.main {
    margin: 2rem 0;
}

.hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-3px);
}

.btn-full {
    width: 100%;
    padding: 1rem;
    font-size: 1.1rem;
}

/* Security Animation */
.security-animation {
    position: relative;
    height: 300px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.shield, .lock, .key {
    position: absolute;
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
}

.shield {
    animation-delay: 0s;
}

.lock {
    animation-delay: 1s;
}

.key {
    animation-delay: 2s;
}

/* Features */
.features {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.section-title {
    text-align: center;
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 3rem;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    background: rgba(255, 255, 255, 0.5);
    transition: all 0.3s ease;
    border: 1px solid rgba(102, 126, 234, 0.1);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    background: rgba(255, 255, 255, 0.8);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: bounce 2s infinite;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* Footer */
.footer {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 2rem;
    margin-top: 3rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

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

.footer-section h4 {
    font-weight: 600;
    margin-bottom: 1rem;
    color: #333;
}

.footer-section p {
    color: #666;
    margin-bottom: 0.5rem;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 20px;
    width: 90%;
    max-width: 400px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    animation: modalSlideIn 0.3s ease;
}

.modal-header {
    background: linear-gradient(45deg, #667eea, #764ba2);
    color: white;
    padding: 1.5rem;
    border-radius: 20px 20px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: 1.3rem;
    font-weight: 600;
}

.close {
    font-size: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.close:hover {
    transform: scale(1.2);
}

.login-form {
    padding: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    font-weight: 400;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.form-footer {
    padding: 1rem 2rem 2rem;
    display: flex;
    justify-content: space-between;
    border-top: 1px solid #e1e5e9;
}

.form-footer a {
    color: #667eea;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.form-footer a:hover {
    color: #764ba2;
    text-decoration: underline;
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
    40% { transform: translateY(-10px); }
    60% { transform: translateY(-5px); }
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav {
        gap: 1rem;
    }
    
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding: 2rem;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}

/* Loading animation for form submission */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #ffffff;
    border-top: 2px solid transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.auth-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-form {
    background: #fff;
    padding: 2.5rem 2rem 2rem 2rem;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.08);
    min-width: 320px;
    max-width: 350px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    border: 3px solid;
    border-image: linear-gradient(120deg, #3b5bdb 0%, #a3bffa 100%);
    border-image-slice: 1;
    position: relative;
    z-index: 1;
    transition: box-shadow 0.3s, border-color 0.3s;
}

.auth-form:hover, .auth-form:focus-within {
    box-shadow: 0 8px 32px rgba(59,91,219,0.15);
    border-image: linear-gradient(120deg, #274690 0%, #a3bffa 100%);
    border-image-slice: 1;
}

.auth-title {
    text-align: center;
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #222;
}

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

.auth-form input[type="text"],
.auth-form input[type="password"] {
    padding: 0.8rem;
    border: 1px solid #e1e5ea;
    border-radius: 8px;
    font-size: 1rem;
    background: #f6f7fb;
    transition: border 0.2s;
}

.auth-form input:focus {
    outline: none;
    border-color: #a3bffa;
}

.btn-auth {
    background: #3b5bdb;
    color: #fff;
    border: none;
    border-radius: 8px;
    padding: 0.8rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
}

.btn-auth:hover {
    background: #274690;
}

.auth-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
    color: #888;
    margin-top: 0.5rem;
}

.auth-links a {
    color: #3b5bdb;
    text-decoration: none;
    cursor: pointer;
    transition: color 0.2s;
}

.auth-links a:hover {
    color: #274690;
}

.error-message, .success-message {
    text-align: center;
    font-size: 0.97rem;
    margin-bottom: 0.5rem;
    border-radius: 7px;
    padding: 0.7rem 0.5rem;
}

.error-message {
    background: #fee;
    color: #c33;
    border: 1px solid #fcc;
}

.success-message {
    background: #efe;
    color: #363;
    border: 1px solid #cfc;
}