.login-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    padding: 20px;
}

.login-box {
    width: 100%;
    max-width: 400px;
    background: #111827;
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 16px;
    padding: 40px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.5s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.login-header {
    text-align: center;
    margin-bottom: 40px;
}

.login-header h1 {
    font-size: 32px;
    margin: 0 0 10px 0;
    background: linear-gradient(135deg, #3b82f6, #10b981);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-header p {
    color: #94a3b8;
    margin: 0;
    font-size: 14px;
}

.login-form {
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 10px;
    color: #cbd5e1;
    font-weight: 500;
    font-size: 14px;
}

.pin-input-container {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.pin-input {
    width: 100%;
    padding: 16px;
    border: 2px solid rgba(59, 130, 246, 0.3);
    border-radius: 10px;
    background: #0f172a;
    color: white;
    font-size: 32px;
    text-align: center;
    letter-spacing: 8px;
    font-weight: bold;
    transition: all 0.3s ease;
}

.pin-input:focus {
    outline: none;
    border-color: #3b82f6;
    background: rgba(59, 130, 246, 0.1);
}

.pin-input::placeholder {
    color: #475569;
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.login-btn:hover {
    background: linear-gradient(135deg, #2563eb, #1d4ed8);
    box-shadow: 0 6px 20px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

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

.error-message {
    display: none;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid #ef4444;
    color: #fca5a5;
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    text-align: center;
    font-size: 14px;
    animation: shake 0.3s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.pin-info {
    margin-top: 20px;
    padding: 15px;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: 8px;
    text-align: center;
}

.pin-info p {
    margin: 0;
    color: #86efac;
    font-size: 13px;
}

.pin-info strong {
    font-family: 'Courier New', monospace;
    font-size: 14px;
}

.login-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.login-footer p {
    color: #64748b;
    font-size: 12px;
    margin: 0;
}

@media(max-width: 768px) {
    .login-container {
        padding: 20px;
    }

    .login-box {
        max-width: 100%;
        padding: 35px 25px;
    }

    .login-header h1 {
        font-size: 28px;
    }

    .login-form {
        margin-bottom: 25px;
    }

    .form-group {
        margin-bottom: 20px;
    }

    .pin-input {
        font-size: 30px;
        letter-spacing: 7px;
    }

    .login-btn {
        padding: 12px;
        font-size: 15px;
    }
}

@media(max-width: 480px) {
    .login-container {
        padding: 15px;
        min-height: 100vh;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .login-box {
        padding: 25px 20px;
        border-radius: 12px;
    }

    .login-header {
        margin-bottom: 30px;
    }

    .login-header h1 {
        font-size: 22px;
        margin: 0 0 8px 0;
    }

    .login-header p {
        font-size: 12px;
    }

    .login-form {
        margin-bottom: 20px;
    }

    .form-group {
        margin-bottom: 18px;
    }

    .form-group label {
        font-size: 13px;
        margin-bottom: 8px;
    }

    .pin-input {
        padding: 14px;
        font-size: 24px;
        letter-spacing: 5px;
        border-radius: 8px;
    }

    .login-btn {
        padding: 11px;
        font-size: 14px;
        border-radius: 8px;
    }

    .error-message {
        padding: 10px;
        margin-top: 12px;
        font-size: 12px;
    }

    .pin-info {
        margin-top: 15px;
        padding: 12px;
        border-radius: 6px;
    }

    .pin-info p {
        font-size: 12px;
    }

    .pin-info strong {
        font-size: 13px;
    }

    .login-footer {
        padding-top: 15px;
    }

    .login-footer p {
        font-size: 11px;
    }
}