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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: #000000;
    color: #ffffff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.6;
}

.container {
    width: 100%;
    max-width: 600px;
    padding: 2rem;
    text-align: center;
}

.content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3rem;
}

.title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 700;
    font-style: italic;
    letter-spacing: -0.01em;
    text-transform: uppercase;
    margin: 0;
    line-height: 1.3;
    padding: 0.2em 0.1em;
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    overflow: visible;
}

.subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    font-weight: 400;
    opacity: 0.8;
    margin: 0;
    letter-spacing: 0.1em;
}

.signup-section {
    width: 100%;
    max-width: 400px;
    margin-top: 2rem;
}

.signup-title {
    font-size: clamp(1rem, 2.5vw, 1.3rem);
    font-weight: 500;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.signup-form {
    width: 100%;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1rem;
}

.phone-input {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    color: #ffffff;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

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

.phone-input:focus {
    outline: none;
    border-color: rgba(255, 255, 255, 0.5);
    background: rgba(255, 255, 255, 0.15);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.1);
}

.submit-btn {
    width: 100%;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    background: linear-gradient(135deg, #ffffff 0%, #f0f0f0 100%);
    color: #000000;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(255, 255, 255, 0.2);
}

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

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

.message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    min-height: 20px;
}

.message.success {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.message.error {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem;
    }
    
    .content {
        gap: 2rem;
    }
    
    .input-group {
        gap: 0.75rem;
    }
    
    .phone-input,
    .submit-btn {
        padding: 0.875rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    
    .content {
        gap: 1.5rem;
    }
    
    .signup-section {
        margin-top: 1rem;
    }
}

/* Loading animation for submit button */
.submit-btn.loading {
    position: relative;
    color: transparent;
}

.submit-btn.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid #000000;
    border-radius: 50%;
    border-top-color: transparent;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}