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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: url('background.jpg') center center/cover no-repeat fixed;
    min-height: 100vh;
    color: #333;
    line-height: 1.6;
    position: relative;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: -1;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 40px;
    color: white;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

.logo i {
    font-size: 2.5rem;
    color: #ffd700;
}

.logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0,0,0,0.3);
}

.subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    font-weight: 300;
}

/* Checker Card */
.checker-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1);
    margin-bottom: 40px;
    color: white;
}

.card-header {
    text-align: center;
    margin-bottom: 30px;
}

.card-header h2 {
    font-size: 1.8rem;
    color: white;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.card-header h2 i {
    color: #ffd700;
}

.card-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 1rem;
}

/* Email Form */
.email-form {
    margin-bottom: 30px;
}

.input-group {
    display: flex;
    gap: 15px;
    max-width: 600px;
    margin: 0 auto;
}

.input-wrapper {
    flex: 1;
    position: relative;
}

.input-wrapper i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
}

#emailInput {
    width: 100%;
    padding: 15px 15px 15px 45px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    backdrop-filter: blur(10px);
}

#emailInput::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

#emailInput:focus {
    outline: none;
    border-color: #ffd700;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.2);
}

.check-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 15px 30px;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.check-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(102, 126, 234, 0.3);
}

.check-btn:active {
    transform: translateY(0);
}

.check-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

/* Result Container */
.result-container {
    margin-top: 30px;
    padding: 25px;
    border-radius: 15px;
    transition: all 0.3s ease;
}

.result-container.success {
    background: linear-gradient(135deg, #4ade80 0%, #22c55e 100%);
    color: white;
}

.result-container.error {
    background: linear-gradient(135deg, #f87171 0%, #ef4444 100%);
    color: white;
}

.result-content {
    display: flex;
    align-items: center;
    gap: 20px;
}

.result-icon {
    font-size: 2.5rem;
    opacity: 0.9;
}

.result-text h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    font-weight: 600;
}

.result-text p {
    font-size: 1rem;
    opacity: 0.9;
}

/* Stats */
.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 12px;
    border-left: 4px solid #667eea;
}

.stat-item i {
    font-size: 1.5rem;
    color: #667eea;
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: #333;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

/* Info Section */
.info-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.info-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 15px;
    padding: 25px;
    text-align: center;
    color: white;
    transition: transform 0.3s ease;
}

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

.info-card i {
    font-size: 2rem;
    color: #ffd700;
    margin-bottom: 15px;
}

.info-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    font-weight: 600;
}

.info-card p {
    opacity: 0.9;
    line-height: 1.6;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(5px);
}

.loading-spinner {
    text-align: center;
    color: white;
}

.loading-spinner i {
    font-size: 3rem;
    margin-bottom: 20px;
    color: #667eea;
}

.loading-spinner p {
    font-size: 1.2rem;
    font-weight: 500;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .logo h1 {
        font-size: 2rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .checker-card {
        padding: 25px;
    }
    
    .input-group {
        flex-direction: column;
    }
    
    .check-btn {
        justify-content: center;
    }
    
    .result-content {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .stats {
        grid-template-columns: 1fr;
    }
    
    .info-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo {
        flex-direction: column;
        gap: 10px;
    }
    
    .logo h1 {
        font-size: 1.8rem;
    }
    
    .checker-card {
        padding: 20px;
    }
    
    .card-header h2 {
        font-size: 1.5rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}